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DE913416C - Process for the production of porous molded bodies for filter purposes and diaphragms - Google Patents

Process for the production of porous molded bodies for filter purposes and diaphragms

Info

Publication number
DE913416C
DE913416C DEP2515D DEP0002515D DE913416C DE 913416 C DE913416 C DE 913416C DE P2515 D DEP2515 D DE P2515D DE P0002515 D DEP0002515 D DE P0002515D DE 913416 C DE913416 C DE 913416C
Authority
DE
Germany
Prior art keywords
molded bodies
porous molded
production
diaphragms
moldings
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEP2515D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PFAELZISCHE CHAMOTTE und TONWE
Original Assignee
PFAELZISCHE CHAMOTTE und TONWE
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 PFAELZISCHE CHAMOTTE und TONWE filed Critical PFAELZISCHE CHAMOTTE und TONWE
Priority to DEP2515D priority Critical patent/DE913416C/en
Application granted granted Critical
Publication of DE913416C publication Critical patent/DE913416C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/24—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by surface fusion and bonding of particles to form voids, e.g. sintering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1638—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate
    • B01D39/1653—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate of synthetic origin
    • B01D39/1661—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate of synthetic origin sintered or bonded

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Description

Verfahren zur Herstellung poröser Formkörper für Filterzwecke und Diaphragmen Zusatz zum Patent 910 288 Das Patent 910 288 betrifft ein Verfahren zur Herstellung von porösen Formkörpern, wonach die zum Aufbau derselben dienenden Polymerisatkörner durch Erwärmen vor der Verformung oder in der Form oberflächlich erweicht und durch gelinde Pressung miteinander vereinigt werden.Process for the production of porous shaped bodies for filter purposes and Diaphragm addition to patent 910 288 The patent 910 288 relates to a method for Production of porous moldings, after which the polymer grains used to build them up superficially softened by heating before deformation or in the form and through be united with each other with gentle pressure.

Nach vorliegender Erfindung werden im Gegensatz zum Patent 910 288 an Stelle von polymeren Estern der a-Methacrylsäure andere thermoplastische, durch organische Lösungsmittel lösbare Kunstharze in Körner- oder Pulverform zum Aufbau von porösen Formkörpern verwendet. According to the present invention, in contrast to patent 910 288 instead of polymeric esters of α-methacrylic acid, other thermoplastic ones are used Organic solvent-soluble synthetic resins in granular or powder form for building up used by porous moldings.

Die durch die Erfindung gegebene Ersetzbarkeit der Polymethacrylsäureester durch andere thermoplastische, also bei Raumtemperatur feste, beim Erwärmen auf gewisse Temperaturen erweichende und beim Abkühlen wieder fest werdende Kunstharze bietet den Vorteil, daß man in der Lage ist, unter den dem Fachmann zur Verfügung stehenden thermoplastischen Kunstharzen jeweils solche auszuwählen, welche für gewisse Zwecke besondere Eignung besitzen oder besonderen Beanspruchungen standzuhalten vermögen. So kann man z. B. für die Filtration heißer Flüssigkeiten Kunstharze mit besonders hohen Erweichungstemperaturen verwenden oder durch Mischung verschiedener thermoplastischer Kunstharze Produkte von bestimmten gewünschten Eigenschaften, z. B. bezüglich Widerstandsfähigkeit gegen bestimmte Agenzien oder bezüglich Elastizität, Biegsamkeit usw. erzielen. Für die Durchführung der Erfindung stehen dem Fachmann eine Reihe von thermoplastischen, in Lösungsmitteln löslichen bzw. durch solche anlösbaren Kunstharzen, insbesondere Polymerisaten zur Verfügung. Zur Herstellung der Formkörper werden die Kunstharzteilchen durch Anlösen oder vorsichtiges Erwärmen oberflächlich enveicht und in erweichtem Zustand leicht zusammengepreßt. Zum Anlösen der Kunstharzkörner kann man spezielle, für die angewendeten Kunstharze geeignete Lösungsmittel, wie z. B. Ketone, Ester oder Äther, verwenden und diese nach Vereinigung der Teilchen durch übliche Maßnahmen, wie Anwendung von Vakuum, Durchleiten von Gasen, Austreiben durch mäßiges Erwärmen, wieder beseitigen. Ebenso kann man die Teilchen durch Erwärmung auf Erweichungstemperatur oberflächlich klebefähig machen, sie in diesem Zustand auf gewünschte Formkörper verpressen und dann wieder abkühlen lassen bzw. abkühlen. Die Erwärmung kann mit üblichen technischen Hilfsmitteln, z. B. durch elektrische Widerstandsheizung, erfolgen. The substitutability of the polymethacrylic acid esters given by the invention by other thermoplastic ones, i.e. solid ones at room temperature, when heated Synthetic resins that soften to certain temperatures and solidify again on cooling has the advantage of being able to choose from among those available to those skilled in the art standing thermoplastic synthetic resins to select those which are suitable for certain Purposes of particular suitability or to withstand special stresses capital. So you can z. B. for the filtration of hot liquids with synthetic resins particularly use high softening temperatures or by mixing various thermoplastic synthetic resin products with certain desired properties, z. B. regarding resistance to certain agents or regarding elasticity, Achieve flexibility, etc. The person skilled in the art is able to carry out the invention a range of thermoplastic, soluble in or through solvents Dissolvable synthetic resins, especially polymers, are available. For the production the molded body becomes the synthetic resin particles by dissolving them or gently heating them superficially softened and slightly compressed when softened. To loosen the synthetic resin grains can be special ones suitable for the synthetic resins used Solvents such as B. ketones, esters or ethers, and use them after association of the particles by conventional measures, such as the application of a vacuum, passing through Eliminate gases, expulsion by moderate heating. You can also use the Make particles superficially adhesive by heating them to the softening temperature, Press them in this state onto the desired shaped body and then cool them down again let or cool down. The heating can be carried out with the usual technical aids, z. B. by electrical resistance heating.

Die erfindungsgemäß hergestellten Formkörper besitzen die gleichen Vorzüge wie die aus Estern der a-Methacrylsäure hergestellten Gebilde; sie können insbesondere infolge ihrer thermoplastischen Eigenschaften und ihrer Fähigkeit, durch bestimmte organische Flüssigkeiten angelöst zu werden, nach- The moldings produced according to the invention have the same properties Advantages such as the structures made from esters of α-methacrylic acid; you can in particular due to their thermoplastic properties and their ability to to be dissolved by certain organic liquids, after-

Claims (1)

träglichen Deformierungen unterworfen werden. So kann man z. B. zunächst plattenförmige Gebilde herstellen und diese nachträglich in andere Formkörper, z. B. Zylinder, überführen. Weiterhin kann man durch die Deformierbarkeit der Gebilde ihr Einpassen in Apparate erleichtern. Im Vergleich zu den porösen Formkörpern gemäß Hauptpatent bietet die Erfindung noch den bereits eingangs envähnten Vorteil, daß sie gestattet, die Ausgangsstoffe so auszuwählen, daß die Erzeugnisse besonderen Verwendungszwecken angepaßt bzw. widerstandsfähig gegen besondere Beanspruchungen gemacht werden können.are subject to sustainable deformations. So you can z. B. initially Produce plate-shaped structures and subsequently convert them to other shaped bodies, e.g. B. cylinder, transfer. Furthermore, the deformability of the structure make it easier to fit them into devices. In comparison to the porous molded bodies according to Main patent, the invention still offers the advantage already mentioned at the outset that it allows the raw materials to be selected in such a way that the products are special Adapted to the intended use and / or resistant to special stresses can be made. PATENTANSPRUCH: Verfahren zur Herstellung poröser Formkörper für Filterzwecke und für Diaphragmen nach Patent mio 288, dadurch gekennzeichnet, daß die Formkörper anstatt aus polymeren Estern der a-Methacrylsäure aus anderen thermoplastischen, in organischen Lösungsmitteln lösbaren Kunstharzen in Form von körnigen oder pulverigen Teilchen aufgebaut werden, indem die zum Aufbau der Formkörper dienenden Polymerisatteilchen durch Behandeln mit Lösungsmitteln oder durch Erwärmen auf Erweichungstemperatur oberflächlich klebefähig gemacht und durch gelinde Pressung miteinander verbunden werden. PATENT CLAIM: Process for the production of porous molded bodies for Filter purposes and for diaphragms according to patent mio 288, characterized in that the moldings instead of polymeric esters of α-methacrylic acid from other thermoplastic, Synthetic resins soluble in organic solvents in the form of granular or powdery Particles are built up by the polymer particles used to build up the moldings by treatment with solvents or by heating to the softening temperature Made superficially adhesive and connected to one another by gentle pressure will. Angezogene Druckschriften: Deutsche Patentschriften Nur.343706, 352 989, 412614, 42I I20, 423 079, 583 93I ; österreichische Patentschrift Nr. III 534. Attached publications: German patents Nur. 343706, 352 989, 412614, 42I I20, 423 079, 583 93I; Austrian patent specification No. III 534.
DEP2515D 1936-08-29 1936-08-29 Process for the production of porous molded bodies for filter purposes and diaphragms Expired DE913416C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP2515D DE913416C (en) 1936-08-29 1936-08-29 Process for the production of porous molded bodies for filter purposes and diaphragms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP2515D DE913416C (en) 1936-08-29 1936-08-29 Process for the production of porous molded bodies for filter purposes and diaphragms

Publications (1)

Publication Number Publication Date
DE913416C true DE913416C (en) 1954-06-14

Family

ID=7358051

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP2515D Expired DE913416C (en) 1936-08-29 1936-08-29 Process for the production of porous molded bodies for filter purposes and diaphragms

Country Status (1)

Country Link
DE (1) DE913416C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075558B (en) * 1953-04-20 1960-02-18 PurOlator Products, Inc., Rahway, N. J. (V. St. A.) Replaceable filter body

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE343706C (en) *
DE352989C (en) * 1920-05-13 1922-05-08 Paul Melchiker Dr Separator for lead collectors and electrolytic cells
DE412614C (en) * 1921-10-18 1925-04-23 Hans Goldschmidt Dr Process for the production of synthetic materials by condensing urea with formaldehyde
DE421120C (en) * 1922-05-07 1925-11-06 Alfred Bruendelmayer Dr Ing Diaphragm for primary and secondary elements as well as for electrolytic and filter purposes made of regenerated cellulose or the like.
DE423079C (en) * 1922-04-02 1925-12-18 M Wildermann Dr Process for the production of porous, more or less hard bodies, especially diaphragms, filters, etc.
AT111534B (en) * 1925-11-14 1928-12-10 Kunstharzfabrik Dr Fritz Polla Process for the production of homogeneously porous, meerschaum-like art masses.
DE583931C (en) * 1930-08-01 1933-09-12 Alfred Ihlenfeld Process for the manufacture of elastic separators or filters

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE343706C (en) *
DE352989C (en) * 1920-05-13 1922-05-08 Paul Melchiker Dr Separator for lead collectors and electrolytic cells
DE412614C (en) * 1921-10-18 1925-04-23 Hans Goldschmidt Dr Process for the production of synthetic materials by condensing urea with formaldehyde
DE423079C (en) * 1922-04-02 1925-12-18 M Wildermann Dr Process for the production of porous, more or less hard bodies, especially diaphragms, filters, etc.
DE421120C (en) * 1922-05-07 1925-11-06 Alfred Bruendelmayer Dr Ing Diaphragm for primary and secondary elements as well as for electrolytic and filter purposes made of regenerated cellulose or the like.
AT111534B (en) * 1925-11-14 1928-12-10 Kunstharzfabrik Dr Fritz Polla Process for the production of homogeneously porous, meerschaum-like art masses.
DE583931C (en) * 1930-08-01 1933-09-12 Alfred Ihlenfeld Process for the manufacture of elastic separators or filters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075558B (en) * 1953-04-20 1960-02-18 PurOlator Products, Inc., Rahway, N. J. (V. St. A.) Replaceable filter body

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