Patent · US Expired

Polymers containing sulphonyl and carboxylic ester groups

US4535139A · kind A · utility

2Cited by

4References

4Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Wolfgang Brauer · Leverkusen, DE
Siegfried Korte · Odenthal, DE
Theo Neukam · Dormagen, DE
Carlhans Suling · Odenthal, DE

Key dates

Filing date	May 5, 1983
Grant date	Aug 13, 1985
Priority date	—
Expiry date	May 5, 2003

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F228/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Polymers obtained by radical polymerization and containing (A) from 0.1 to 80 mole percent of polymerized units corresponding to the following formula ##STR1## in which R.sub.1 represents hydrogen or methyl, PA0 R.sub.2 represents alkyl, particularly primary or secondary alkyl containing from 1 to 4 carbon atoms, and PA0 R.sub.3 represents hydrogen or alkyl, particularly primary or secondary alkyl containing from 1 to 4 carbon atoms, and in which the sulphonic acid group may be present in the form of a salt, and (B) from 20 to 99.9 mole percent of polymerized units of one or more ethylenically unsaturated monomers, are particularly suitable for the production of filaments, fibres and films having a high absorption capacity for basic dyes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.