Patent · US Expired

Preparation of copolymers of monoethylenically unsaturated monomers containing acid groups and N-vinyllactams

US5506315A · kind A · utility

14Cited by

9References

11Claims

0Family size

Assignee

BASF SE

Inventors

Harald Meyer · Monsheim, DE
Walter Denzinger · Speyer, DE
Axel Sanner · Bischofswerda, DE
Heinrich Hartmann · Schifferstadt, DE

Key dates

Filing date	Sep 12, 1994
Grant date	Apr 9, 1996
Priority date	—
Expiry date	Sep 12, 2014

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11D3/3776
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Copolymers are prepared from monoethylenically unsaturated monomers containing acid groups and N-vinyllactams and, if required, other monoethylenically unsaturated monomers by copolymerization of monomers in the presence of free radical polymerization initiators by a solution polymerization method in water at a pH of at least 6, by a process in which an alkali metal base or an alkaline earth metal base or a mixture thereof is used for establishing the pH of the aqueous reaction solution.

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