Patent · US Expired

Aqueous polyurea dispersions and their use for preparing coatings with excellent hydrolytic and thermal stability

US5652301A · kind A · utility

5Cited by

13References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Peter D. Schmitt · Lambsheim, DE
Douglas A. Wicks · Mount Lebanon, US
Lyuba K. Gindin · Pittsburgh, US
Philip E. Yeske · Pittsburgh, US
Arthur W. Mason · Sistersville, US
Kenneth P. Yonek · Eighty Four, US

Key dates

Filing date	Aug 20, 1996
Grant date	Jul 29, 1997
Priority date	—
Expiry date	Aug 20, 2016

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2375/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to aqueous dispersions of polyureas containing hydantoin groups (calculated as C.sub.3 N.sub.2 O.sub.2, MW 96) in an amount of 1 to 40% by weight, based on resin solids. The present invention also relates to the use of these dispersions for preparing coatings having excellent hydrolytic and thermal stability.

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