Title:
MANUFACTURE OF COPOLYMER OF VINYLPHOSPHONIC ACID AND (METH) ACRYLIC ACID IN AQUEOUS SOLUTION STATE
Document Type and Number:
Japanese Patent JPS60260606
Kind Code:
A
Abstract:
Process for the preparation of polymers of vinylphosphonic acid in water with the aid of catalysts which form free radicals, which comprises heating vinylphosphonic acid and (meth)acrylic acid to temperatures of 40 DEG to 120 DEG C. in water in the presence of 1 to 5.5% by weight of aliphatic peroxy esters and/or diacyl peroxides which dissociate by half in one hour at temperatures below 122 DEG C., the total amount of vinylphosphonic acid being taken together with up to 30% by weight, based on the total amount of monomer, of (meth)acrylic acid and the remainder of the (meth)acrylic acid being added in the course of the reaction. The copolymers are suitable for use in detergent and cleaning agents.
Inventors:
UARUTERU DEYURUSHIYU
YUNGEN GUROOSE
UERUNERU GOORA
FURIIDORITSUHI ENGERUHARUTO
URURITSUHI RIIGERU
YUNGEN GUROOSE
UERUNERU GOORA
FURIIDORITSUHI ENGERUHARUTO
URURITSUHI RIIGERU
Application Number:
JP10414685A
Publication Date:
December 23, 1985
Filing Date:
May 17, 1985
Export Citation:
Assignee:
HOECHST AG
International Classes:
C08F2/00; C08F4/32; C08F30/00; C08F30/02; C08F220/06; C08F230/02; C11D3/00; C11D3/37; (IPC1-7): C08F220/06; C08F230/02; C11D3/37
Attorney, Agent or Firm:
Ezaki Mitsuyoshi