Patent · US Expired

Manufacture of insoluble and only slightly water-swellable polymers of N-vinyl lactams of improved adsorptivity

US3992562A · kind A · utility

70Cited by

2References

7Claims

0Family size

Assignee

BASF SE

Inventors

Walter Denzinger · Speyer, DE
Ernst Hofmann
Karl Herrle

Key dates

Filing date	Jul 7, 1975
Grant date	Nov 16, 1976
Priority date	—
Expiry date	Jul 7, 1995

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC12H1/0424
WIPO fieldFood chemistry
WIPO sectorChemistry

Abstract

Manufacture of insoluble polyvinyl lactams by polymerization in the absence of oxygen and in the presence of sulfur compounds having a functionality of less than 6.

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