Patent · US Expired

Biodegradable vinylpyrrolidone polymers, their manufacture and use

US4254239A · kind A · utility

11Cited by

3References

6Claims

0Family size

Assignee

BASF SE

Inventors

Ferdinand Straub · Hockenheim, DE
Hans-Uwe Schenck · Monsheim, DE
Siegfried Lang · Ludwigshafen, DE
Egon Brode · Bischofswerda, DE

Key dates

Filing date	Dec 28, 1978
Grant date	Mar 3, 1981
Priority date	—
Expiry date	Dec 28, 1998

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F8/00
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

High molecular weight products based on N-vinylpyrrolidone, in which blocks of vinylpyrrolidone polymers or vinylpyrrolidone copolymers are linked by connecting units carrying ester, amide, urethane or urea groups, as a result of which these high molecular weight products are biodegradable and may be used as plasma substitutes, and the plasma substitutes thus obtained.

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