Title:
WATER-SOLUBLE COPOLYMER, MANUFACTURE AND USE
Document Type and Number:
Japanese Patent JPS63278917
Kind Code:
A
Abstract:
Water-soluble copolymers having a K value of from 15 to 120 (determined on the sodium salt according to H. Fikentscher in aqueous solution at 25 DEG C., a pH of 7 and a polymer concentration of the Na salt of 1% by weight) contain, in the polymerized form, (a) from 99.5 to 80 mol % of one or more monoethylenically unsaturated C3-C6-monocarboxylic acids and (b) from 0.5 to 20 mol % of one or more comonomers which possess two or more ethylenically unsaturated, non-conjugated double bonds, are derived from esters and are obtainable by esterification of (b1) monoethylenically unsaturated C3-C6-monocarboxylic acids with (b2) polyhydric alcohols of 2 to 6 carbon atoms, polyalkylene glycols, polyglycerols, polyvinyl alcohol and monohydric, monoethylenically unsaturated C3-C6-alcohols and (c) from 0 to 30 mol % of other water-soluble, monoethylenically unsaturated monomers which are copolymerizable with (a) and (b), the copolymers containing polymer segments which consist of units of the monomers (a) and (c), have a weight average molecular weight of not more than 15,000 and are bonded to one another via units of (b).
Inventors:
HANSUUPEETAA ZEERUMANNETSUGEBE
DEIITAA BETSUKU
UORUFUGANGU TORIIZENTO
AREKISANDAA KUUDO
DEIITAA BETSUKU
UORUFUGANGU TORIIZENTO
AREKISANDAA KUUDO
Application Number:
JP9471488A
Publication Date:
November 16, 1988
Filing Date:
April 19, 1988
Export Citation:
Assignee:
BASF AG
International Classes:
A01C1/06; A01N25/26; C08F2/10; C08F20/10; C08F220/04; C08F220/20; C08F290/00; C08F299/00; C08L101/16; (IPC1-7): C08F220/04; C08F220/20; C08F299/00
Attorney, Agent or Firm:
Toshio Yano (2 outside)
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