GB1297249A - - Google Patents

Info

Publication number
GB1297249A
GB1297249A GB1297249DA GB1297249A GB 1297249 A GB1297249 A GB 1297249A GB 1297249D A GB1297249D A GB 1297249DA GB 1297249 A GB1297249 A GB 1297249A
Authority
GB
United Kingdom
Prior art keywords
solution
monomer
polymerization
peroxypivalate
meth
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
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 filed Critical
Publication of GB1297249A publication Critical patent/GB1297249A/en
Expired legal-status Critical Current

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
    • C08F4/00—Polymerisation catalysts
    • C08F4/28—Oxygen or compounds releasing free oxygen
    • C08F4/32—Organic compounds

Abstract

1297249 Solution polymerization of watersoluble monomers CALGON CORP 19 Nov 1970 [24 Nov 1969] 55035/70 Heading C3P A method of solution polymerizing one or more water-soluble ethylenically unsaturated monomers comprises preparing an aqueous solution containing 10-70% by weight of monomer, adjusting the temperature of the solution to from 0-80‹ C. and adding from 1 x 10<SP>-6</SP> to 5 x 10<SP>-2</SP> moles of tertiary butyl peroxypivalate per mole of monomer, and allowing polymerization to proceed, there being added to the monomer solution at some stage before addition of the peroxypivalate 1-500 p.p.m. (based on the weight of the solution) of a chelating agent, and dissolved oxygen being removed before, during or after said temperature adjustment by purging the solution with an inert gas and thereafter maintaining the monomer solution substantially oxygen-free. Polymerization may proceed uncontrolled, isothermally or adiabatically. An accelerator may also be used with the peroxypivalate; useful accelerators include N, N-dimethylaniline, ferric/ous ions plus sodium salicylate, cuprous ions, and N,N-dimethyltoluidine (p- or m-isomer). Suitable monomers include (meth)acrylamide and N-substituted derivatives thereof, acrylic aminimides, (meth) acrylic acid and water-soluble esters thereof, vinylsulphonates, vinylphosphonates, vinylbenzylsulphates, carbovinyloxymethyl trimethyl ammonium chloride, vinylpyridine and diallyl dialkyl quaternary ammonium compounds; a cross-linking monomer such as methylene-bisacrylamide may also be used. Chelating agents disclosed are di- and tetrasodium salts of ethylenediaminetetraacetic acid, cupferron and nitrilotrisacetamide.
GB1297249D 1969-11-24 1970-11-19 Expired GB1297249A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87951369A 1969-11-24 1969-11-24

Publications (1)

Publication Number Publication Date
GB1297249A true GB1297249A (en) 1972-11-22

Family

ID=25374315

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1297249D Expired GB1297249A (en) 1969-11-24 1970-11-19

Country Status (6)

Country Link
BE (1) BE759298A (en)
CA (1) CA921198A (en)
DE (1) DE2057578A1 (en)
FR (1) FR2072231A5 (en)
GB (1) GB1297249A (en)
NL (1) NL7016594A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2206121A (en) * 1987-06-26 1988-12-29 American Cyanamid Co Polymerization process
CN111547830A (en) * 2020-05-11 2020-08-18 爱森（中国）絮凝剂有限公司 Modified high-efficiency anionic flocculant and preparation method thereof
CN114080405A (en) * 2019-07-05 2022-02-22 住友精化株式会社 Method for producing water-absorbent resin particles and aqueous monomer solution
CN115260414B (en) * 2022-08-03 2024-02-06 山东诺尔生物科技有限公司 Modified polyacrylamide acid thickener and preparation method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4160742A (en) 1978-06-15 1979-07-10 Calgon Corporation Method of resolving oil-in-water emulsions

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2206121A (en) * 1987-06-26 1988-12-29 American Cyanamid Co Polymerization process
GB2206121B (en) * 1987-06-26 1990-12-12 American Cyanamid Co High solids process for the production of water soluble polymers by exothermic polymerization
CN114080405A (en) * 2019-07-05 2022-02-22 住友精化株式会社 Method for producing water-absorbent resin particles and aqueous monomer solution
CN114080405B (en) * 2019-07-05 2023-04-28 住友精化株式会社 Method for producing water-absorbent resin particles and aqueous monomer solution
CN111547830A (en) * 2020-05-11 2020-08-18 爱森（中国）絮凝剂有限公司 Modified high-efficiency anionic flocculant and preparation method thereof
CN115260414B (en) * 2022-08-03 2024-02-06 山东诺尔生物科技有限公司 Modified polyacrylamide acid thickener and preparation method thereof

Also Published As

Publication number Publication date
CA921198A (en) 1973-02-13
BE759298A (en) 1971-05-24
DE2057578A1 (en) 1971-06-03
FR2072231A5 (en) 1971-09-24
NL7016594A (en) 1971-05-26

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees