Patent · US Expired

Polyurethane dispersion (PUD) with improved isopropanol resistance, flexibility and softness

US7045573B2 · kind B2 · utility

17Cited by

13References

15Claims

0Family size

Assignee

Bayer MaterialScience AG · DE

Inventors

Eduard Mayer · Dormagen, DE
Thomas Muenzmay · Dormagen, DE
Yuliya Berezkin · Pittsburgh, US
Poli Yu · Ingomar, US
Richard R. Roesler · Wexford, US
Mary Crisci · Aliquippa, US

Key dates

Filing date	Oct 2, 2003
Grant date	May 16, 2006
Priority date	—
Expiry date	Oct 2, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/1386
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Isocyanate-functional polyurethane prepolymers and aqueous dispersions therefrom which are useful for the production of flat materials having excellent resistance to alcoholic solvents are described. The prepolymers are prepared by reacting:

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