Patent · US Expired

Crosslinked polyvinylpyrrolidone (PVPP) copolymer of vinyl pyrrolidone (VP) and monomer derived from 1-vinyl-3-(E)-ethylidene pyrrolidone (EVP)

US6011160A · kind A · utility

1Cited by

0References

16Claims

0Family size

Assignee

ISP Investments LLC · US

Inventors

Edward G. Malawer · Wayne, US
Victor A. Kabanov · Moscow, RU
Kolazi S. Narayanan · Palisades Park, US
Michael A. Tallon · Aberdeen, US
Susan Y. Tseng · Staten Island, US
Philip F. Wolf · Bound Brook, US

Key dates

Filing date	Sep 18, 1997
Grant date	Jan 4, 2000
Priority date	—
Expiry date	Sep 18, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F26/06
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

What is described herein is a crosslinked polyvinylpyrrolidone (PVPP) copolymer of vinyl pyrrolidone (VP) and monomer derived from 1-vinyl-3-(E)-ethylidene pyrrolidone (EVP).

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