JP2010526918A - Printing machine cleaning composition - Google Patents

Abstract

Disclosed herein is a composition comprising a hydrocarbon solvent, an aromatic solvent, a methylated siloxane, and a surfactant. Further disclosed is a method of preparing an emulsion for cleaning purposes, comprising mixing the solution for at least 2 hours at a speed greater than 500 rpm, the solution comprising a hydrocarbon solvent, an aromatic solvent, a methylation Siloxane and a surfactant. Further disclosed herein is a method of cleaning a printing machine roller, plate, or blanket with a cleaning mixture, the method comprising contacting the roller or blanket with the cleaning mixture, the cleaning mixture comprising: A hydrocarbon solvent, an aromatic solvent, a methylated siloxane, and a surfactant are included.
[Selection figure] None

Description

[Related applications]
This application was filed by Raymond Dabela et al. On May 11, 2007, by US Patent Application No. 11 / 747,812 entitled “PRINTING PRES CLEANING COMPOSTIONS”, and Raymond Dabela et al. On August 31, 2007. Claims priority to filed US Provisional Patent Application No. 60 / 969,578 entitled “PRINTING PRES CLEANING COMPOSTIONS”, the entire disclosures of both of which are incorporated herein by reference. .

  The present invention is in the field of cleaning solutions and mixtures, in particular in the field of cleaning solutions and mixtures used in the printing industry.

  Offset printing is a printing technique that is widely used when an ink image is transferred (or “offset”) from a plate to a rubber blanket and thus to a printing surface such as paper. When used in combination with a lithographic process based on the repulsion of oil and water, offset technology uses a flat (lithographic) image carrier on which the image to be printed gets ink from an ink roller However, the non-printing area attracts a water film, and the non-printing area is kept free of ink.

  During operation of the printing press, ink often smudges non-printing areas, causing stains or smudges to appear on the printed surface, or generally interfering with printing press operation. Furthermore, pulp and dust from the paper used as the printing surface arises from the paper as it moves through the printing press. This dust settles on various parts of the printing press, including rollers, plates, and blankets, contaminates these parts and interferes with the printing mechanism. In some applications, various papers are stacked on top of each other with a layer of sprayed powder separating them, such as corn starch, before being fed to the printing press. The spray powder ensures that the paper does not stick together and is supplied separately to the printing press. Over time, the spray powder accumulates on the rollers, plates, and blankets and interferes with the printing mechanism.

  Thus, the press is periodically cleaned by applying cleaning solution to the rollers, plates, and blankets to remove ink and smudges from these parts. Traditionally, cleaning solutions have included volatile organic compounds (VOC). It is known that VOCs are not environmentally friendly. They may be carcinogens, contribute to the depletion of the ozone layer, and contribute to the greenhouse effect that causes global warming. As a result, the government has set limits on the use of VOCs in various industries, including the printing industry.

  In order to comply with government regulations, various cleaning solutions with low VOC content have been sold. These cleaning solutions are for the most part oil based. Oil has a relatively low vapor pressure and is generally not considered volatile. However, oil is not sufficient for use as a printing press cleaner. The oil in the cleaning solution has a tendency to splash. Once oil is used, it accumulates at the bottom of the printing press and, in turn, scatters to various parts, causing further contamination. In addition, the oil is difficult to remove and dispose of.

  Thus, there is a need in the industry for low VOC solvents that comply with government regulations, are economical to use, and that efficiently and effectively clean printing presses.

  Disclosed herein is a composition comprising a hydrocarbon solvent, an aromatic solvent, a methylated siloxane, and a surfactant. Further disclosed is a method of preparing an emulsion for cleaning purposes comprising mixing the solution for at least 2 hours at a speed greater than 500 rpm, the solution comprising a hydrocarbon solvent, an aromatic solvent, a methylation Siloxane and a surfactant. Further disclosed herein is a method of cleaning a printing roller, plate, or blanket with a cleaning mixture, the method comprising contacting the roller or blanket with the cleaning mixture, the cleaning mixture comprising: A hydrocarbon solvent, an aromatic solvent, a methylated siloxane, and a surfactant are included.

  Accordingly, in one aspect, disclosed herein is a composition comprising a hydrocarbon solvent, an aromatic solvent, a methylated siloxane, and a surfactant.

In some embodiments, the hydrocarbon solvent comprises a straight or branched alkyl chain, cycloalkyl, double bond, triple bond, or combinations thereof. In other embodiments, the hydrocarbon solvent is a natural product. In certain embodiments, the hydrocarbon solvent containing the _C 5 _{-C 30} hydrocarbons. As used herein, “C _m -C _n ” refers to the number of carbon atoms in the ring of alkyl, alkenyl, alkynyl, and cycloalkyl and cycloalkenyl groups, where “m” and “n” are integers. Is a number. That is, alkyl, alkenyl, or alkynyl can comprehensively contain “m” to “n” carbon atoms.

In some embodiments, the hydrocarbon solvent is a mixture of at least two of C ₅ -C ₃₀ hydrocarbons. Thus, as used herein, the term “hydrocarbon solvent” includes not only a solvent containing a single chemical species but also a mixture of two or more chemical species. It is a solvent, and each chemical species is a hydrocarbon.

  In some embodiments, the hydrocarbon solvent is selected from the group consisting of limonene, lacolene, and Solvent 142. Solvent 142 is a blend of low odor petroleum distillates used as an industrial cleaning solvent and is suitable for use when low flash point mixtures are unacceptable.

  In some embodiments, the hydrocarbon solvent contains a heteroatom (ie, at least one heteroatom) within the chain. In these embodiments, the hydrocarbon solvent is selected from the group consisting of ethers, thioethers, secondary amines, and tertiary amines.

  In some preferred embodiments, the hydrocarbon solvent is an ether. In some of these embodiments, the hydrocarbon solvent comprises a carbon chain backbone that is substituted with one or more alkoxy substituents. In other embodiments, the main chain of the carbon chain is further substituted with one or more hydroxy substituents. In these embodiments, the hydrocarbon solvent is an alcohol. In other embodiments, the main chain of the carbon chain is substituted with both one or more alkoxy substituents and one or more hydroxy substituents.

  Examples of ethers are but not limited to the glycol ether family. Glycol ethers are a group of solvents based on alkyl ethers of ethylene glycol. These solvents generally have a high boiling point with the favorable solvent properties of low molecular weight ethers and alcohols. The original glycol ether is ethyl cellosolve. The glycol ether may be further derived from diethylene glycol (carbitol).

Although glycol ether solvent is not limited, ethylene glycol monomethyl ether (2-methoxyethanol, CH ₃ OCH ₂ CH ₂ OH), ethylene glycol monoethyl ether (2-ethoxyethanol, CH ₃ CH ₂ OCH ₂ CH ₂ OH), ethylene Glycol monopropyl ether (2-propoxyethanol, CH ₃ CH ₂ CH ₂ OCH ₂ CH ₂ OH), ethylene glycol monoisopropyl ether (2-isopropoxyethanol, (CH ₃ ) ₂ CHOCH ₂ CH ₂ OH), ethylene glycol mono butyl ether _{(2-butoxyethanol, CH 3 CH 2 CH 2 CH} 2 OCH 2 CH 2 OH) ( also called glycol ether EB), ethylene glycol monophenyl ether (2-Fe _{Butoxyethanol, C 6 H 5 OCH 2 CH} 2 OH), ethylene glycol monobenzyl ether (2-benzyloxy _{ethanol, C 6 H 5 CH 2 OCH} 2 CH 2 OH), diethylene glycol monomethyl ether (2- (2-methoxyethoxy ) Ethanol, methyl carbitol, CH ₃ OCH ₂ CH ₂ OCH ₂ CH ₂ OH), diethylene glycol monoethyl ether (2- (2-ethoxyethoxy) ethanol, carbitol cellosolve, CH ₃ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OH), diethylene glycol mono -n- butyl ether (2- (2-butoxyethoxy) _{ethanol, CH 3 CH 2 CH 2 CH} 2 OCH 2 CH 2 OCH 2 CH 2 OH), ethylene glycol dimethyl ether ( _{Methoxyethane, CH 3 OCH 2 CH 2 OCH} 3), ethylene glycol diethyl ether (diethoxy _{ethane, CH 3 CH 2 OCH 2 CH} 2 OCH 2 CH 3), ethylene glycol dibutyl ether _{(dibutoxyethane, CH} 3 CH 2 CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₃ ), ethylene glycol methyl ether acetate (2-methoxyethyl acetate, CH ₃ OCH ₂ CH ₂ OCOCH ₃ ), ethylene glycol monoethyl ether acetate (2 - ethoxyethyl _{acetate, CH 3 CH 2 OCH 2 CH} 2 OCOCH 3), ethylene glycol monobutyl ether acetate (2-butoxyethyl _{acetate, CH 3 CH 2 CH 2 CH} 2 OCH 2 CH 2 OC Including the CH _3). In some embodiments, the aromatic solvent comprises an optionally substituted phenyl ring. Unless otherwise indicated, when a compound or portion thereof is considered “optionally substituted”, the substituted compound or portion thereof is alkyl, alkenyl, alkynyl, cycloalkyl, aryl, hetero, Aryl, heteroalicyclic, hydroxyl, alkoxy, aryloxy, mercapto, alkylthio, arylthio, cyano, halo, carbonyl, thiocarbonyl, O-carbamyl, N-carbamyl, O-thiocarbamyl, N-thiocarbamyl, C-amide, N- Amides, S-sulfonamides, N-sulfonamides, C-carboxy, O-carboxy, isocyanate, thiocyanate, isothiocyanate, nitro, silyl, trihalomethanesulfonyl, and mono- and disubstituted It is a group that can be substituted with one or more groups individually and separately selected from amino, including a selected amino group and a protected derivative thereof. Protecting groups that can form the protective derivatives of the above substituents are known to those skilled in the ^{art, "Greene and Wuts, Protective Groups} in Organic Synthesis, 3 rd Ed., John Wiley & Sons, New York, NY, Can be found in literature such as 1999 ", which is incorporated herein in its entirety.

  In some embodiments, the aromatic solvent is a mixture of at least two compounds, each of which contains a selectively substituted phenyl ring. Thus, as used herein, the term “aromatic solvent” refers not only to a solvent containing a single chemical species, but also to a solvent containing a mixture of two or more chemical species. Each chemical species is an aromatic compound.

  In some embodiments, the aromatic solvent comprises a selectively substituted halobenzene. “Halobenzene” is a phenyl group substituted with benzene or one or more halogens such as fluoro, chloro, bromo, or iodo. In a particular embodiment, the aromatic solvent includes a selectively substituted perhaloalkylbenzene. “Perhaloalkylbenzene” is benzene or a phenyl group substituted with one or more alkyl groups, all of which hydrogen atoms are replaced with halogens. Examples of perhaloalkyl groups include, but are not limited to, trifluoromethyl, trichloromethyl, tribromomethyl, pentafluoroethyl, pentachloroethyl, and the like. In some embodiments, the aromatic solvent is 1-chloro-4- (trifluoromethyl) benzene, also known as parachlorobenzotrifluoride (PCBTF) or “Oxol 100®”. In some embodiments, the halobenzene ranges between 15 and 45% by volume. In other embodiments, the halobenzene ranges between 20 and 40% by volume. In yet another embodiment, the halobenzene is in the range of between 20-30% by volume.

  In some embodiments, the methylated siloxane is a cyclic, branched, or straight chain methylated siloxane. Siloxanes contain several terminal —OH groups. In “methylated siloxane”, at least one hydrogen atom of the —OH group is replaced with a methyl group. In some embodiments, the methylated siloxane contains 4 to 20 methyl groups.

  In some embodiments, the methylated siloxane is a mixture of at least two methylated siloxanes. Thus, as used herein, the term “methylated siloxane” includes not only a solvent containing a single species but also a mixture of two or more species. It is a solvent, and each chemical species is a methylated siloxane.

  In some embodiments, the methylated siloxane is octamethylcyclotetrasiloxane, also known as cyclomethicone or D4, decamethylcyclopentasiloxane (SF1202 or D5), dodecamethylcyclohexasiloxane (also known as D6). Selected from the group consisting of

  Cyclic, branched or straight chain fully methylated siloxane (VMS) is listed in Group II as an excluded compound under South Coast Air Quality Management District (SCAQMD) Rule 102 The SCAQMD Rule 1171 prohibits the use of Group II compounds, but specifically allows the use of VMS. In some preferred embodiments, the methylated siloxanes used in the compositions disclosed herein are only cyclic, volatile, fully methylated siloxanes.

  Dow Corning 244 fluid consists of greater than 60 percent octamethylcyclotetrasiloxane (D4). Dow Corning 345 liquid is a mixture of 30 to 40 percent dodecamethylcyclohexasiloxane (D6) with the remainder being decamethylcyclopentasiloxane. Dow Corning OS-10 is a linear, volatile, fully methylated siloxane composed of greater than 60 percent hexamethyldisiloxane (HMDS). In some embodiments, the Dow Corning solution ranges between 15-55% by volume. In other embodiments, the Dow Corning solution is in the range between 25 and 50% by volume. In yet another embodiment, the Dow Corning solution is in the range of between 25 and 35% by volume.

  In some embodiments, the surfactant can further act as an emulsifier. Generally, the surfactant is a long chain hydrocarbon and may contain one or more sites of unsaturation, i.e. double (both cis and trans) or triple bonds. In some embodiments, the surfactant comprises a fatty acid or salt or ester thereof.

Fatty acids are long chain hydrocarbons that generally contain a carboxyl group at one end and are usually obtained from hydrolyzed fats or oils. Some synthesizing long chain hydrocarbons may be referred to as fatty acids even if not obtained from naturally occurring fats or oils. In the context of this disclosure, the term “fatty acid” includes any long chain hydrocarbon, even if the chain does not contain a carboxyl group. By “long chain” is meant that the hydrocarbon chain contains from 5 to 50 carbon atoms (eg, a C ₅ -C ₅₀ chain). In some embodiments, the fatty acid is caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, myristoleic acid, palmitoleic acid, oleic acid, linoleic acid, α -Selected from the group consisting of linolenic acid, arachidonic acid, eicosapentaenoic acid, erucic acid, and docosahexaenoic acid. In some embodiments, the fatty acid is oleic acid.

  In some embodiments, the surfactant is a salt or ester of oleic acid, and may be freely selected from, for example, sorbitan monooleate or methyl oleate.

  In other embodiments, the surfactant is a salt or ester of linolenic acid, such as the methyl ester of linolenic acid.

  In some embodiments, the surfactant is a mixture of fatty acid esters. An example of such a mixture is NORFOX® MSY (methyl soyate) (Norman, Fox & Co, Vernon, Calif.), Most (51.5%) methyl ester of linolenic acid.

  In some embodiments, the surfactant is a salt of an alkyl aromatic sulfonic acid. This particular surfactant may be an amine, alkali metal or ammonium salt of an alkyl aromatic sulfonic acid as an anionic emulsifier. Alkyl aromatic hydrophobic materials dissolve well in oily mixtures. This surfactant emulsifier produces only a few bubbles compared to conventional anionic surfactants. The surfactant may be an alkylbenzene or alkylnaphthalenesulfonic acid amine, alkali metal, or ammonium salt. Examples are not limited, but isopropylamine salt of linear dodecylbenzenesulfonic acid, isopropylamine salt of branched dodecylbenzenesulfonic acid, diethanolamine salt of linear or branched dodecylbenzenesulfonic acid, and the like Contains a mixture. In some embodiments, the alkyl aromatic sulfonic acid is linear dodecylbenzene sulfonate isopropylamine (CALIMULSE PRS). In another embodiment, the alkyl aromatic sulfonic acid is a sodium salt of dodecylbenzene sulfonic acid (NORFOX® 40).

  In some embodiments, the surfactant is a mixture of at least two surfactants. Thus, as used herein, the term “surfactant” refers not only to a solvent containing a single chemical species, but to a solvent containing a mixture of two or more chemical species. Each chemical species acts as a surfactant.

  In some embodiments, the compositions described herein comprise less than 50% by volume hydrocarbon solvent, less than 75% by volume aromatic solvent, and less than 75% by volume methylated siloxane. And less than 75% surfactant by volume. In other embodiments, the compositions described herein comprise less than 40% by volume hydrocarbon solvent, less than 50% by volume aromatic solvent, and less than 50% by volume methylated siloxane. , And less than 50% surfactant by volume. In yet another aspect, the compositions described herein comprise less than 35% by volume hydrocarbon solvent, less than 30% by volume aromatic solvent, and less than 40% by volume methylated siloxane. And less than 20% surfactant by volume.

  In some embodiments, the compositions described herein further comprise water. In some embodiments, the water is deionized water. In other embodiments, the water is distilled water.

  The compositions disclosed herein have the advantage of including a low VOC component, i.e., the VOC content of the composition is less than 200 g / L, in some embodiments less than 150 g / L, others In this embodiment, it is 100 g / L and in a specific embodiment, it is less than 100 g / L.

  In some embodiments, the compositions disclosed herein contain less than 200 g / L VOC before water is added. After the distilled water is added, the VOC content of the composition is less than 100 g / L.

  In some embodiments, the compositions disclosed herein include at least one basic component. The inclusion of the basic component is useful for cleaning the metal component of the printing press. In some embodiments, the basic component is soda ash, ie sodium carbonate. In other embodiments, the basic component is sodium tripolyphosphate. In certain embodiments, the basic component comprises sodium metasilicate. In other embodiments, the basic component comprises two or more basic components.

  In another aspect, disclosed herein is a composition comprising an aromatic solvent, a methylated siloxane, and a surfactant, which terms are described herein. Is.

  In another aspect, disclosed herein is a composition comprising a hydrocarbon solvent, a methylated siloxane, and a surfactant, which terms are described herein. Is.

  In another aspect, disclosed herein is a composition comprising a hydrocarbon solvent, an aromatic solvent, and a surfactant, the terms of which are described herein. It is.

  In another aspect, disclosed herein is a composition comprising a hydrocarbon solvent, an aromatic solvent, and a methylated siloxane, which terms are described herein. Is.

  In some embodiments, the compositions described herein are in the form of a solution, while in other embodiments, the composition is an emulsion.

  Accordingly, in another aspect, described herein is a method for preparing an emulsion for cleaning purposes comprising mixing a solution for at least 2 hours at a speed greater than 500 rpm, wherein the solution is a hydrocarbon solvent. , Aromatic solvents, methylated siloxanes, and surfactants, these terms are as described herein. In some embodiments, the solution is mixed for about 4 hours. In other embodiments, the solution is mixed for about 8 hours. In yet another embodiment, the solution is mixed for about 12 hours. In a further embodiment, the solution is mixed for about 24 hours. In other embodiments, the solution is mixed for more than 24 hours.

  In some embodiments, the solution is mixed at a speed of about 600 rpm. In other embodiments, the solution is mixed at a speed of less than 4000 rpm. In certain embodiments, the solution is mixed at a speed between about 600 and 3600 rpm.

  The compositions described herein are best used to clean certain printing press parts such as rollers, plates, or blankets. Accordingly, in another aspect, described herein is a method of cleaning a printing roller, plate, or blanket with a cleaning mixture, the method comprising contacting the roller or blanket with the cleaning mixture. And the cleaning mixture includes a hydrocarbon solvent, an aromatic solvent, a methylated siloxane, and a surfactant, and these terms are as described herein. In some embodiments, the wash mixture is a solution, while in other embodiments, the wash mixture is an emulsion.

  The compositions disclosed herein provide a low VOC (volatile organic compound) cleaning mixture that is effective in a wide range of applications. These compositions may be used, for example, in a sheet-fed, automatic, web or heatset printer. In some embodiments, the composition is used in an automatic cleaning system, while in other embodiments, the composition is used manually to clean the printing press.

  If the press operator determines that a portion of the roller, plate, or blanket needs to be cleaned, the operator stops the ink and water flow to the roller, and then the solution or emulsion on the roller. Either washing mixture can be injected. The cleaning solution passes through the printing press and flows down like ink or water, cleaning the surface area that comes into contact. In some embodiments, because the wash cycle is short, it is not necessary to stop the flow of paper through the press during the wash cycle. In other embodiments, the operator first stops the flow of paper through the press and then applies the cleaning mixture while the rollers and plates are still rotating.

[Example]
The following examples are not limiting and are presented only to illustrate some of the aspects disclosed herein.

[Example 1: Cleaning mixture of blanket and roller]
The following mixture provides a low VOC (volatile organic compound) roller and blanket cleaning mixture that is effective for a wide range of applications. The following mixtures may be used, for example, on a sheet-fed, automatic, web or heatset printer. In the following, all volume fractions were determined at room temperature.

  “Oxol 100®” is the trademark name of Occidental Chemical for parachlorobenzotrifluoride (PCBTF). The IUPAC name for PCBTF is 1-chloro-4- (trifluoromethyl) benzene. The 23% concentration of PCBTF (volume fraction of 0.23) is close to the safety upper limit for functionality when a high percentage of PCBTF damages the rubber used in printing blankets and rollers. Furthermore, PCBTF has what many people consider as an unpleasant odor.

  “MOL” represents methyl oleate. “SMO” stands for sorbitan monooleate. “PRS” stands for linear isopropylamine dodecylbenzenesulfonate (CALIMULSE PRS) and is commercially available from Pilot Chemical Company of Santa Fe Springs, Calif.

  Dow Corning OS-10 is a linear, volatile, fully methylated siloxane consisting of greater than 60 percent hexamethyldisiloxane (HMDS).

  SF1202 (CAS registration number: 541-02-6) consists of greater than 90 decamethylcyclopentasiloxane.

  Dow Corning 244 fluid consists of more than 60 percent octamethylcyclotetrasiloxane.

[Example 2: Preparation of emulsion]
A mixture of various ingredients, such as any of the mixtures 1-6 described in Example 1 or any of the following mixtures 7-9, and optionally water, is placed in a mixer such as a Schold Mixer. The mixture is mixed for 24 hours at a speed between 600 and 3600 rpm. The emulsion is obtained as a milky white liquid.

  Stability tests showed that the emulsions obtained by these methods remained stable, i.e. not separated, for a period of at least 2 months.

[Example 3: Mixture 7]
In addition to the cleaning mixture described in Example 1, it provides a particularly useful cleaning solution for the cleaning roller that is applied to use UV ink.

  This formulation is a low VOC roller and blanket cleaning solution that removes UV ink in a wide range of applications (single sheet feed, automatic, web, heat set, and variants), but is economical. Mixture 7 is from the International Agency for Research on Cancer (IARC), National Toxicology Program (NTP), Occupational Safety & Health Administration or Health Adviser, HealthOS California Proposal It does not contain carcinogens or reproductive toxins listed by (California Proposition 65).

  In this formulation, Oxol 100 and Dow Corning 244 fluid are combined. Both fluids are US Environmental Protection Agency (EPA) and California VOC exclusion compounds. The mixture is designed to meet South Coast Air Conservation Zone Rule 1171, effective January 1, 2008, requiring solvent wash operations to use products having a VOC content of less than 100 grams per liter.

  EB is 2-butoxyethanol, also called glycol ether. EB is very effective as a solvent for UV inks and any of the other glycol ethers can be used for 87 grams of VOC per liter.

  Norfox MSY (methyl soyate) is a mixture of fatty acid esters, mostly about 51.5% methyl ester of linolenic acid. MSY provides approximately 12 grams of VOC per liter to the formulation.

[Example 4: Mixture 8]
Further cleaning mixtures are provided as follows.

  The above ingredients are mixed for 20-30 minutes before the following ingredients are added to the mixture.

  This formulation is a low VOC plate cleaner that effectively removes ink in a wide range of applications (single-fed, automatic, web, heatset, and variants), but is economical . Mixture 8 does not contain IARC, NTP, OSHA, or carcinogens or reproductive toxins listed by California Proposition 65.

  This formulation combines Oxol 100 and Dow Corning 244 fluid. Both are USEPA and California VOC exclusion compounds. Designed to meet South Coast Air Conservation Zone Rule 1171, effective January 1, 2008, requiring solvent wash operations to use products having a VOC content of less than 100 grams per liter.

  Mineral Spirits 142 is an Ashland brand name for petroleum distillates with a flash point above 140 degrees Fahrenheit. Mineral Spirits 142 could be replaced on a weight basis with virtually any solvent without substantial change in the effectiveness of the formulation. Mineral Spirits 142 could be replaced with water or Dow Corning 244 solution to provide an effective VOC zero plate cleaner.

  Upon drying, Staramic 747 and tapioca dextrin 955 form a coating that protects plate images in short-term memory. This coating is easily washed away with water in combination with gentle stirring with a sponge.

  Triethanolamine and oleic acid are combined to increase the viscosity of the mixture 8.

  The premixing step can be omitted without noticeable detrimental effects on the formulation. The ingredients after the premixing step were added slowly to form a viscous stable emulsion. Although the order of addition is not limited, the components are listed in the preferred order of addition. The components may be added in any other order.

[Example 4: Mixture 9]
Further cleaning mixtures are provided as follows.

  EPS-6113 is a mixture containing at least one basic component and includes the following components.

  This formulation is a low VOC plate cleaner that effectively removes ink in a wide range of applications (single-fed, automatic, web, heatset, and variants), but is economical . Mixture 9 does not contain IARC, NTP, OSHA, or carcinogens or reproductive toxins listed by California Proposition 65.

  The essence of this formulation is a combination of Oxol 100 and Dow Corning 244 fluid. Both are USEPA and California VOC exclusion compounds. Designed to meet South Coast Air Conservation Zone Rule 1171, effective January 1, 2008, requiring solvent wash operations to use products having a VOC content of less than 100 grams per liter.

STPP is sodium tripolyphosphate (or sodium triphosphate) having the formula Na ₅ P ₃ O ₁₀ . STPP is used in a variety of applications as a preservative for seafood, meat, poultry and pet food. STPP is further used in toothpastes and when soap and detergent manufacturers improve cleaning performance. The US Food and Drug Administration lists STPP as “generally recognized as safe” with salt, vinegar, and baking powder.

  Norfox (R) 40 is available from Norman, Fox & Co. A mixture sold by the company and containing about 40% sodium dodecylbenzenesulfonate.

  Triton® BG-10 is a mixture containing about 70% low polymer D-glucopyranose.

  EPS-6113 provides the mixture 9 with a cleaning agent and a scratch removal function. The active ingredient sodium dodecylbenzenesulfonate constitutes 40 percent Norfox 40. The surfactant of Triton® BG-10 as shown by Dow chemical company in MSDS # 2265 dated 13 February 2003 is 40 C.I. F. R. Sections 302.4 and 372, sections 103, 302, and 313, do not include reportable components. In addition, MSDS # 2265 states that “This product is not included in the listed substances known in California that cause cancer, birth defects, or other reproductive harm at concentrations that require caution under the law. "It has said. Sodium metasilicate pentahydrate removes scratches from the printing plate.

Claims (30)

  A composition comprising a hydrocarbon solvent, an aromatic solvent, a methylated siloxane, and a surfactant.   The composition of claim 1, wherein the hydrocarbon solvent comprises a branched alkyl chain, a cycloalkyl, a double bond, a triple bond, or a combination thereof.   The composition according to claim 1, wherein the hydrocarbon solvent is a natural product. A composition according to claim 1, the composition in which the hydrocarbon solvent is characterized in that it comprises a C ₅ -C ₃₀ hydrocarbons. A composition according to claim 1, composition characterized in that said hydrocarbon solvent is a mixture of at least two of C ₅ -C ₃₀ hydrocarbons.   2. The composition of claim 1, wherein the hydrocarbon solvent is selected from the group consisting of limonene, lacolene, and Solvent 142.   2. The composition of claim 1, wherein the aromatic solvent comprises a selectively substituted phenyl ring.   2. The composition of claim 1, wherein the aromatic solvent comprises a selectively substituted halobenzene.   2. The composition of claim 1, wherein the aromatic solvent is a mixture of at least two compounds, each of which comprises a selectively substituted phenyl ring.   The composition according to claim 1, wherein the aromatic solvent is 1-chloro-4- (trifluoromethyl) benzene.   2. The composition according to claim 1, wherein the methylated siloxane is a cyclic, branched chain or straight chain methylated siloxane.   2. The composition of claim 1, wherein the methylated siloxane is a mixture of at least two methylated siloxanes.   A composition according to claim 1, wherein the methylated siloxane contains 4 to 20 methyl groups.   2. The composition of claim 1, wherein the methylated siloxane is selected from the group consisting of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and combinations thereof. Composition.   2. The composition according to claim 1, wherein the surfactant includes a salt or ester of a fatty acid.   The composition of claim 15, wherein the fatty acid is caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, myristoleic acid, palmitoleic acid, oleic acid, A composition selected from the group consisting of linoleic acid, α-linolenic acid, arachidonic acid, eicosapentaenoic acid, erucic acid, and docosahexaenoic acid.   The composition according to claim 15, wherein the fatty acid is oleic acid.   The composition according to claim 1, wherein the surfactant is a salt of an alkyl aromatic sulfonic acid.   The composition according to claim 1, wherein the salt of the alkyl aromatic sulfonic acid is linear dodecylbenzene sulfonate isopropylamine (CALIMULSE PRS).   2. A composition according to claim 1, wherein the surfactant is a mixture of at least two surfactants.   The composition according to claim 1, wherein the surfactant is selected from the group consisting of sorbitan monooleate, methyl oleate, and isopropylamine linear dodecylbenzenesulfonate.   The composition according to claim 1, further comprising water.   The composition according to claim 1, wherein the composition is emulsified.   A method of preparing an emulsion for cleaning purposes, comprising mixing the solution for at least 2 hours at a rate greater than 500 rpm, wherein the solution comprises a hydrocarbon solvent, an aromatic solvent, a methylated siloxane, And a surfactant.   A cleaning method for cleaning a roller, plate, or blanket of a printing press, the method comprising the step of contacting the roller or blanket with a cleaning mixture, the cleaning mixture comprising a hydrocarbon solvent, an aromatic solvent, methyl A method comprising: a modified siloxane and a surfactant.   26. The method of claim 25, wherein the cleaning mixture is a solution.   26. The method of claim 25, wherein the cleaning mixture is an emulsion.   A composition comprising d-limonene, parachlorobenzotrifluoride, Solvent 142, Dow Corning 345 or Dow Corning 244, linear isopropylamine dodecylbenzenesulfonate, sorbitan monooleate, methyl oleate The composition characterized by including these.   29. The composition according to claim 28, wherein the parachlorobenzotrifluoride is in the range of between 15 and 45% by volume.   29. The composition of claim 28, wherein the Dow Corning solution is in the range of between 15 and 55% by volume.