GB1328305A - Method for preparing acrylamide polymers - Google Patents
Method for preparing acrylamide polymersInfo
- Publication number
- GB1328305A GB1328305A GB3069571A GB3069571A GB1328305A GB 1328305 A GB1328305 A GB 1328305A GB 3069571 A GB3069571 A GB 3069571A GB 3069571 A GB3069571 A GB 3069571A GB 1328305 A GB1328305 A GB 1328305A
- Authority
- GB
- United Kingdom
- Prior art keywords
- meth
- acrylamide
- monomers
- diluent
- alkyl
- 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
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
- C08F20/52—Amides or imides
-
- 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
- C08F20/52—Amides or imides
- C08F20/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F20/56—Acrylamide; Methacrylamide
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)
- Polymerisation Methods In General (AREA)
Abstract
1328305 Preparing water-soluble acrylamide polymers NATIONAL STARCH & CHEMICAL CORP 30 June 1971 [17 July 1970] 30695/71 Heading C3P High molecular weight, water-soluble acrylamide polymers, in granular form, are prepared by a precipitation polymerization of acrylamide, with or without comonomer(s), at 20-100‹ C. in a substantially non-aqueous diluent in the presence of a free radical initiator, the diluent comprising a polar, inert organic liquid which is a solvent for the monomer(s) used and in which is dissolved 3-12% by weight (based on the diluent) of a metal salt selected from lithium chloride monohydrate, lithium nitrate, lithium nitrate trihydrate, lithium bromide dihydrate, zinc nitrate hexahydrate and magnesium nitrate hexahydrate. (The presence of the metal salt is stated to provide high molecular weight products, to prevent fouling of reactor surfaces and, also, to increase the rate of polymerization.) Suitable diluents include t-butyl alcohol, ethyl acetate, methyl acetate and acetone. Comonomers which may be used include anionic monomers such as (meth)acrylic acid, alkyl half-esters of maleic, fumaric or itaconic acid, vinyl sulphonic acid, methacryloyloxymethyl phosphonic acid and salts thereof; cationic monomers such as aminoalkyl (meth) acrylates and their quaternary ammonium derivatives, aminoalkyl - (meth)acrylamides, mono- or di-allylamine and quaternary ammonium derivatives, which monomers containing amino groups are preferably neutralized with strong acids before being polymerized; and nonionic monomers such as alkyl or hydroxyalkyl (meth)acrylates, (meth)acrylamide and N-alkyl derivatives thereof, diacetone acrylamide, styrene, alpha-methyl styrene, (meth)- acrylonitrile and N-vinylpyrrolidone. Azobisisobutyronitrile or benzoyl peroxide may be used as initiator.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5599470A | 1970-07-17 | 1970-07-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1328305A true GB1328305A (en) | 1973-08-30 |
Family
ID=22001455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3069571A Expired GB1328305A (en) | 1970-07-17 | 1971-06-30 | Method for preparing acrylamide polymers |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA931695A (en) |
| DE (1) | DE2135742A1 (en) |
| GB (1) | GB1328305A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115894791A (en) * | 2021-09-30 | 2023-04-04 | 中国石油化工股份有限公司 | Water-soluble polymer, preparation method and application thereof |
-
1971
- 1971-06-30 GB GB3069571A patent/GB1328305A/en not_active Expired
- 1971-07-06 CA CA117531A patent/CA931695A/en not_active Expired
- 1971-07-16 DE DE19712135742 patent/DE2135742A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115894791A (en) * | 2021-09-30 | 2023-04-04 | 中国石油化工股份有限公司 | Water-soluble polymer, preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CA931695A (en) | 1973-08-07 |
| DE2135742A1 (en) | 1972-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |