Patent · US Expired

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

US6124415A · kind A · utility

2Cited by

1References

8Claims

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	Aug 4, 1999
Grant date	Sep 26, 2000
Priority date	—
Expiry date	Aug 4, 2019

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.