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
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.
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)
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 |
EP0942015B1 (en) * | 1998-03-06 | 2004-05-12 | Nippon Shokubai Co., Ltd. | (Meth)acrylic acid polymer and manufacturing method thereof |
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)
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 |
GB2058801B (en) * | 1979-08-24 | 1983-06-02 | Rhone Poulenc Ind | Process for the preparation of aqueous solutions of low molecular weight polyacrylic acids or their salts |
-
1985
- 1985-11-20 ES ES549073A patent/ES8604997A1/en not_active Expired
-
1986
- 1986-11-07 FI FI864528A patent/FI91161C/en not_active IP Right Cessation
- 1986-11-08 DE DE3638222A patent/DE3638222C2/en not_active Expired - Fee Related
- 1986-11-14 FR FR868615889A patent/FR2590261B1/en not_active Expired
- 1986-11-17 BE BE0/217414A patent/BE905762A/en not_active IP Right Cessation
- 1986-11-19 NL NLAANVRAGE8602944,A patent/NL189302C/en not_active IP Right Cessation
- 1986-11-20 CH CH4654/86A patent/CH670647A5/fr not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CH670647A5 (en) | 1989-06-30 |
NL8602944A (en) | 1987-06-16 |
FI864528A (en) | 1987-05-21 |
FI91161C (en) | 1994-05-25 |
ES549073A0 (en) | 1986-03-01 |
DE3638222A1 (en) | 1987-05-21 |
NL189302B (en) | 1992-10-01 |
FI91161B (en) | 1994-02-15 |
DE3638222C2 (en) | 1996-02-22 |
FR2590261B1 (en) | 1989-03-03 |
FR2590261A1 (en) | 1987-05-22 |
NL189302C (en) | 1993-03-01 |
ES8604997A1 (en) | 1986-03-01 |
FI864528A0 (en) | 1986-11-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: LABORATORIOS MIRET S.A. Effective date: 19991130 |