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WO2003080721A1 - Procede permettant d'accelerer la reaction de solidification d'une emulsion de latex sbr - Google Patents

Procede permettant d'accelerer la reaction de solidification d'une emulsion de latex sbr Download PDF

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Publication number
WO2003080721A1
WO2003080721A1 PCT/JP2002/002764 JP0202764W WO03080721A1 WO 2003080721 A1 WO2003080721 A1 WO 2003080721A1 JP 0202764 W JP0202764 W JP 0202764W WO 03080721 A1 WO03080721 A1 WO 03080721A1
Authority
WO
WIPO (PCT)
Prior art keywords
coated paper
sbr latex
coating
styrene
latex emulsion
Prior art date
Application number
PCT/JP2002/002764
Other languages
English (en)
Japanese (ja)
Inventor
Tsai Ming Tsung
Chen Chien An
Nuryanto
Deny Prihariyadi
Chandra Heriyanto
Original Assignee
Pt. Pabrik Kertas Tjiwi Kimia Tbk.
Suzuki, Rikio
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pt. Pabrik Kertas Tjiwi Kimia Tbk., Suzuki, Rikio filed Critical Pt. Pabrik Kertas Tjiwi Kimia Tbk.
Priority to PCT/JP2002/002764 priority Critical patent/WO2003080721A1/fr
Priority to JP2003578462A priority patent/JPWO2003080721A1/ja
Publication of WO2003080721A1 publication Critical patent/WO2003080721A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08L9/06—Copolymers with styrene
    • C08L9/08—Latex
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/52—Cellulose; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/02—Cellulose; Modified cellulose

Definitions

  • the present invention relates to a method for accelerating the solidification reaction of a styrene-butadiene copolymer latex (hereinafter referred to as “SBR latex”), and an SBR latex emulsion.
  • SBR latex styrene-butadiene copolymer latex
  • the present invention relates to a coating liquid for producing coated paper using a coating and a method for producing coated paper.
  • Coated paper has many advantages, such as whiteness, gloss, smoothness, and printability, compared to uncoated paper. It is used for This coated paper is divided into art paper, coated paper, lightweight coated paper, lightly coated printing paper, etc. Other special methods include cast-coated paper with a mirror-like coated surface. Exists.
  • coated papers are manufactured by applying a pigment to the surface of the base paper.
  • Art paper and coated paper used for high-grade printing such as catalogs and posters are made of high-quality paper or medium-quality paper as the base paper.
  • use deposition amount of the coating of about 2 0 g / m 2 approximately at one side in the art paper is about 1 0 g / m 2 approximately at one side in coated paper.
  • the base paper manufacturing process and the coating process are made independent in order to meet quality requirements, and the process is optimized independently to optimize the process.
  • the manufactured base paper is wound up with a reel and then the wound base paper is moved to another independent coating equipment and coated with a coater while rewinding the base paper.
  • the coater method is adopted.
  • the present inventors have conducted various studies on such causes, and as a result of analyzing the coated paper having this problem using a Fourier transform infrared spectrometer (FIIR), the water content of the coated paper was reduced to 4% or less using an off-machine coater. Despite the preparation, a double bond generated from an SBR latex that was not completely polymerized was found.
  • a coating liquid is prepared by dispersing a white pigment such as calcium carbonate in water.
  • the most commonly used type is one to which a synthetic emulsion such as SBR latex is added. Among them, SBR latex emulsion is most often used because of its good properties.
  • contamination of the coated paper surface when the coating speed is increased when producing coated paper with an off-machine coater method is due to drying of the coating layer in the drying section of the high-speed off-machine coater.
  • contamination of the coated paper surface when the coating speed is increased when producing coated paper with an off-machine coater method is due to drying of the coating layer in the drying section of the high-speed off-machine coater.
  • the solidification rate of SBR Latex emulsion is slower than that of off-machine coater. Therefore, to solve this problem, the solidification rate of the SBR latex emulsion must be faster than the machine speed.
  • the inventors tested the solidification rate of most SBR latex emulsions on the market, but the solidification rate of all these SBR latex emulsions was low, with off-states operating at speeds as high as 700 minutes or more. It was not enough for use in producing coated paper by double coating with a machine coater system. Accordingly, the present inventors have developed a method of increasing the solidification rate of SBR latex emulsion.
  • HEC water-soluble polymer hydroxyxethyl cellulose
  • an object of the present invention is to provide a method for improving the solidification rate of SBR latex emulsion.
  • Another object of the present invention is to provide a coating liquid which can be used in a high-speed coating machine in which the solidification rate of the SBR latex emulsion is increased by adding HEC to the coating liquid containing the SBR latex emulsion. It is to provide a working liquid.
  • Another object of the present invention is to provide a method for producing coated paper using the above-mentioned coating solution. The above object of the present invention can be achieved by employing the following configuration.
  • a method for accelerating solidification reaction of SBR latex emulsion characterized by adding HEC to SBR latex emulsion.
  • the HEC content is preferably 0.5 to 5% based on the dry weight of the styrene-butadiene copolymer latex, and the reaction temperature is 50 to 80 ° C. Is preferred.
  • a coating liquid for producing a coated paper containing at least a pigment, an SBR latex emulsion and HEC since the HEC exhibits some catalytic action on the solidification reaction of the SBR latex, the solidification reaction speed of the SBR latex is improved, and a high quality coated paper can be obtained even at a high speed. It can be manufactured.
  • the HEC content is preferably set to 0.5 to 5% based on the dry weight of the SBR latex emulsion.
  • a method for producing a coated paper using a coating liquid containing at least a pigment, an SBR latex emulsion and HEC as a coating liquid is provided.
  • the HEC content in the coating liquid is preferably 0.5 to 5% based on the dry weight of the SBR latex emulsion, and the coating machine is 70 Om / min.
  • a high-speed coating machine having the above speed can be used.Furthermore, it is possible to produce good quality art paper or coated paper by using a double coating type as the coating machine. Become.
  • FIG. 1 is a diagram showing the results of measurement of the relationship between the heating temperature and the viscosity in a coating solution containing SBR latex emulsion while changing the HEC content ratio.
  • FIG. 2 is a diagram showing the relationship between the slope value from the time when the minimum viscosity value of each curve in FIG. 1 is reached to 80 ° C. and the HEC content ratio.
  • the coating liquid clay coating is 35 wt%, ⁇ & Rei_0 3 Water was added 20 parts by weight pigment powder 1 00 parts by weight of 6 5 wt%, then the S BR Ratetsu task content 50 Wt% aqueous emulsion was added to make up 12% of the pigment powder by dry weight of SBR latex, and 11% aqueous solution with solid concentration of 30% was added to dry weight of SBR latex by dry weight, respectively.
  • HEC is physically adsorbed on the SBR latex particles to form an adsorption protective layer.
  • HEC chemically reacts with a carboxyl group in the SBR latex, or HEC and SBR latex undergo a graft copolymerization reaction.
  • the HEC stops the function of the Chain Transfer Agent used in the production of the SBR latex emulsion and causes a polymerization reaction between the SBR particles.
  • the heating temperature varies depending on the amount of HEC added, but the effect can be seen from about 50 ° C.
  • the coated paper is generally heated to about 80 ° C, and the slope up to 80 ° C after reaching the minimum viscosity value is shown in Table 1.
  • Table 1 also shows the gelation temperature. ⁇ table 1 ⁇
  • the HEC content (° / 0 ) is the ratio to the weight of the dried SBR latex. ⁇ In addition, the value of this slope is plotted on the vertical axis, and the horizontal axis is expressed as the HEC concentration, as shown in Fig. 2. According to the description in Fig. 2, the HEC concentration has an effect from about 0.5%, and the upper limit is extended to 3% or more. The upper limit is desirably suppressed to about 5% in consideration of the deterioration of the properties and the degree of coloring of the coated paper obtained. In this case, the solidification reaction rate is about 1.5 to about 5 times that of the conventional example in which the HEC is 0%.
  • the SBR latex is completely removed even when double coating at a high speed of 700 rnZ min or more. Because it can be solidified, the quality of coated paper is also improved as follows.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un fluide de couchage contenant une émulsion de latex styrène-butadiène (SBR) subissant pour solidification accélérée; lequel fluide de couchage permet d'obtenir un papier couché par application dudit fluide de couchage au moyen d'une coucheuse hors machine à une vitesse atteignant au moins 700 m/sec. L'invention concerne également un procédé permettant de produire un papier couché avec le fluide de couchage. Ce fluide de couchage comprend au moins un pigment, une émulsion de latex SBR, et de l'hydroxyéthylcellulose (HEC), la quantité de HEC étant comprise entre 0,5 et 5 % par rapport au latex SBR sur une base sèche.
PCT/JP2002/002764 2002-03-22 2002-03-22 Procede permettant d'accelerer la reaction de solidification d'une emulsion de latex sbr WO2003080721A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2002/002764 WO2003080721A1 (fr) 2002-03-22 2002-03-22 Procede permettant d'accelerer la reaction de solidification d'une emulsion de latex sbr
JP2003578462A JPWO2003080721A1 (ja) 2002-03-22 2002-03-22 Ｓｂｒラテックスエマルジョンの固化反応促進方法、該ｓｂｒラテックスエマルジョンを使用した塗工液及び塗工紙の製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2002/002764 WO2003080721A1 (fr) 2002-03-22 2002-03-22 Procede permettant d'accelerer la reaction de solidification d'une emulsion de latex sbr

Publications (1)

Publication Number Publication Date
WO2003080721A1 true WO2003080721A1 (fr) 2003-10-02

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Family Applications (1)

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PCT/JP2002/002764 WO2003080721A1 (fr) 2002-03-22 2002-03-22 Procede permettant d'accelerer la reaction de solidification d'une emulsion de latex sbr

Country Status (2)

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JP (1) JPWO2003080721A1 (fr)
WO (1) WO2003080721A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010508842A (ja) * 2006-11-13 2010-03-25 ソ スン ナ 人工漁礁の機能を有する海底固定型海洋構造物及びその製作方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09176997A (ja) * 1995-12-27 1997-07-08 Nippon Paper Ind Co Ltd グラビア印刷用塗工紙
JPH09296394A (ja) * 1996-04-30 1997-11-18 Nippon Paper Ind Co Ltd グラビア印刷用塗工紙
JPH10226993A (ja) * 1997-02-17 1998-08-25 Asahi Chem Ind Co Ltd 紙塗工液

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09176997A (ja) * 1995-12-27 1997-07-08 Nippon Paper Ind Co Ltd グラビア印刷用塗工紙
JPH09296394A (ja) * 1996-04-30 1997-11-18 Nippon Paper Ind Co Ltd グラビア印刷用塗工紙
JPH10226993A (ja) * 1997-02-17 1998-08-25 Asahi Chem Ind Co Ltd 紙塗工液

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010508842A (ja) * 2006-11-13 2010-03-25 ソ スン ナ 人工漁礁の機能を有する海底固定型海洋構造物及びその製作方法

Also Published As

Publication number Publication date
JPWO2003080721A1 (ja) 2005-07-21

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