Patent · US Active

Method of producing water-soluble nonturbid copolymers of at least one water-soluble N-vinyllactam and at least one hydrophobic comonomer

US7572871B2 · kind B2 · utility

0Cited by

17References

16Claims

0Family size

Assignee

BASF SE

Inventors

Rainer Dobrawa · Stuttgart, DE
Ralf Widmaier · Mannheim, DE
Eberhard Schupp · Schwetzingen, DE
Klaus Schnell · Neustadt, DE

Key dates

Filing date	Dec 21, 2006
Grant date	Aug 11, 2009
Priority date	—
Expiry date	Dec 21, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F216/10
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Method of producing vinyllactam copolymers by free-radical polymerization of at least one water-soluble N-vinyllactam and at least one hydrophobic comonomer in an organic solvent in the presence of an initiator under reflux conditions, where the initiator is introduced into the polymerization mixture from below.

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