Patent · US Expired

Styrene-containing popcorn polymers, method for producing same and utilisation

US6525156B1 · kind B1 · utility

4Cited by

8References

11Claims

0Family size

Assignee

BASF SE

Inventors

Andreas Ernst · Worms, DE
Helmut Meffert · Mannheim, DE
Axel Sanner · Bischofswerda, DE
Stefan Stein · Saulheim, DE
Folker Ruchatz · Neustadt, DE

Key dates

Filing date	Oct 24, 2001
Grant date	Feb 25, 2003
Priority date	—
Expiry date	Oct 24, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J41/14
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Insoluble, only slightly swellable popcorn polymers containinga) from 50 to 99% by weight of styrene and/or at least one monounsaturated styrene derivative,b) from 0.1 to 40% by weight of at least one N-vinyllactam or N-vinylamine andc) from 0.1 to 10% by weight of at least one difunctional crosslinking component,the stated percentages by weight of the individual components a) to c) summing to 100%.

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