Patent · US Expired

Reduction of monomer content and stabilization of polyaziridines

US6927297B2 · kind B2 · utility

0Cited by

5References

17Claims

0Family size

Assignee

Bayer MaterialScience AG · DE

Inventors

Lanny D. Venham · Paden City, US
Douglas A. Wicks · Mount Lebanon, US
Karsten Danielmeier · Solingen, DE
Joseph P. Mandara · Barnegat, US

Key dates

Filing date	Oct 31, 2002
Grant date	Aug 9, 2005
Priority date	—
Expiry date	Jul 4, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G73/0213
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a process for reducing the monomeric aziridine content in a polyaziridine forming reaction mixture by adding to the polyaziridine forming reaction mixture an excess of an organic carbonate scavenger wherein the excess is based on the equivalent ratio of scavenger to monomeric aziridine, and to a product obtained by this process and to a coating composition containing the product obtained by the process.

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