BE905762A - PROCESS FOR OBTAINING AQUEOUS SOLUTIONS OF POLYACRYLIC ACIDS, COPOLYMERS OF SUCH SUBSTANCES AND THEIR CORRESPONDING SALTS. - Google Patents

PROCESS FOR OBTAINING AQUEOUS SOLUTIONS OF POLYACRYLIC ACIDS, COPOLYMERS OF SUCH SUBSTANCES AND THEIR CORRESPONDING SALTS.

Info

Publication number
BE905762A
BE905762A BE0/217414A BE217414A BE905762A BE 905762 A BE905762 A BE 905762A BE 0/217414 A BE0/217414 A BE 0/217414A BE 217414 A BE217414 A BE 217414A BE 905762 A BE905762 A BE 905762A
Authority
BE
Belgium
Prior art keywords
aqueous solutions
polyacrylic acids
copolymers
substances
obtaining aqueous
Prior art date
Application number
BE0/217414A
Other languages
French (fr)
Original Assignee
Miret Lab
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 Miret Lab filed Critical Miret Lab
Publication of BE905762A publication Critical patent/BE905762A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
    • C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
    • C08F20/04—Acids, Metal salts or ammonium salts thereof
    • C08F20/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Graft Or Block Polymers (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

Procédé pour l'obtention de solutions aqueuses d'acides polyacryliques, caractérisé par l'addition graduelle et programmée des monomères et des catalyseurs à une certaine quantité d'eau initiale maintenue entre 5 et 15 degrés C, la masse étant soumise à un chauffage de 4 à 5 heures, à des températures non inférieures à 70 degrés C, et finalement le produit de réaction, après refroidissement, étant soumis à une neutralisation avec un hydroxyde alcalin.Process for obtaining aqueous solutions of polyacrylic acids, characterized by the gradual and programmed addition of the monomers and catalysts to a certain quantity of initial water maintained between 5 and 15 degrees C, the mass being subjected to a heating of 4 to 5 hours, at temperatures not lower than 70 degrees C, and finally the reaction product, after cooling, being subjected to neutralization with an alkali hydroxide.

BE0/217414A 1985-11-20 1986-11-17 PROCESS FOR OBTAINING AQUEOUS SOLUTIONS OF POLYACRYLIC ACIDS, COPOLYMERS OF SUCH SUBSTANCES AND THEIR CORRESPONDING SALTS. BE905762A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES549073A ES8604997A1 (en) 1985-11-20 1985-11-20 Acrylic acid (co)polymer (salt) prepn. in aq. medium

Publications (1)

Publication Number Publication Date
BE905762A true BE905762A (en) 1987-03-16

Family

ID=8490223

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/217414A BE905762A (en) 1985-11-20 1986-11-17 PROCESS FOR OBTAINING AQUEOUS SOLUTIONS OF POLYACRYLIC ACIDS, COPOLYMERS OF SUCH SUBSTANCES AND THEIR CORRESPONDING SALTS.

Country Status (7)

Country Link
BE (1) BE905762A (en)
CH (1) CH670647A5 (en)
DE (1) DE3638222C2 (en)
ES (1) ES8604997A1 (en)
FI (1) FI91161C (en)
FR (1) FR2590261B1 (en)
NL (1) NL189302C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0830098B2 (en) * 1987-07-16 1996-03-27 日本合成化学工業株式会社 Super absorbent resin manufacturing method
ES2050617B1 (en) * 1992-10-22 1994-12-16 Miret Lab AQUEOUS SOLUTIONS OF ACRYLIC POLYMERS.
DE4419568A1 (en) * 1994-06-03 1995-12-07 Henkel Kgaa Process for the production of low molecular weight polyacrylic acids with a narrow molecular weight distribution in a tubular reactor
DE69917106T2 (en) * 1998-03-06 2005-05-19 Nippon Shokubai Co. Ltd. (Meth) acrylic acid polymer and process for its preparation
US6297336B1 (en) 1998-07-02 2001-10-02 Nippon Shokubai Co., Ltd. Detergent builder, production process therefor, and poly(meth)acrylic acid (or salt) polymer and use thereof
DE10015135A1 (en) * 2000-03-29 2001-10-04 Basf Ag Process for modifying polymers containing acid groups
US6998453B2 (en) 2001-10-03 2006-02-14 Nippon Shokubai Co., Ltd. (Meth)acrylic acid type polymer and unsaturated polyalkylene glycol type copolymer, and methods for production thereof
CN103172784A (en) * 2011-12-23 2013-06-26 何寒 Technical process capable of manually producing water-retaining agent

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD124652A1 (en) * 1975-12-31 1977-03-09
BR8000357A (en) * 1979-01-22 1980-10-07 Rohm & Haas PROCESS FOR THE PREPARATION OF A HYDRO-SOLUBLE POLYMER HAVING A MOLECULAR WEIGHT OF UP TO ABOUT 50,000
ES8104333A1 (en) * 1979-08-24 1981-04-01 Rhone Poulenc Ind Process for the preparation of aqueous solutions of low molecular weight polyacrylic acids or their salts

Also Published As

Publication number Publication date
CH670647A5 (en) 1989-06-30
NL189302C (en) 1993-03-01
FI864528A (en) 1987-05-21
FI864528A0 (en) 1986-11-07
FR2590261B1 (en) 1989-03-03
FI91161B (en) 1994-02-15
FR2590261A1 (en) 1987-05-22
DE3638222C2 (en) 1996-02-22
NL8602944A (en) 1987-06-16
NL189302B (en) 1992-10-01
ES8604997A1 (en) 1986-03-01
DE3638222A1 (en) 1987-05-21
FI91161C (en) 1994-05-25
ES549073A0 (en) 1986-03-01

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: LABORATORIOS MIRET S.A.

Effective date: 19991130