Patent · US Expired

Rapidly crystallizing polyurethane systems

US5115073A · kind A · utility

19Cited by

5References

9Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Walter Meckel · Neuss, DE
Eduard Hansel · Wuppertal, DE
Gu Arend · Dormagen, DE
Klaus Konig · Leverkusen, DE

Key dates

Filing date	Sep 11, 1990
Grant date	May 19, 1992
Priority date	—
Expiry date	Sep 11, 2010

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2250/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention is directed to a polyurethane system containing isocyanate groups prepared by reacting PA0 A) 70 to 98 parts by weight of at least one polyester diol having a melting point of 30.degree. C. to 60.degree. C. and a molecular weight of 800 to 8,000, PA0 B) 2 to 30 parts by weight of at least one polyester diol having a melting point of 65.degree. C. to 150.degree. C. and a molecular weight of 600 to 8,000, and PA0 C) no more than 1 mole of a diol having a molecular weight of less than 600 per moles of A) plus B), with, PA0 D) at least one organic polyisocyanate, the ratio of isocyanate groups to hydroxyl groups is between 3:1 and 1.2:1.

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