Patent · US Expired

Thermoplastic, elastic polyurethanes which are soluble in ethers and/or ketones

US4058506A · kind A · utility

9Cited by

7References

9Claims

0Family size

Assignee

BASF SE

Inventors

Guenter Vaeth · Schifferstadt, DE
Rudolf Bachmann
Heinrich Hartmann · Schifferstadt, DE
Herbert Spoor · Schifferstadt, DE
August Lehner

Key dates

Filing date	Aug 25, 1975
Grant date	Nov 15, 1977
Priority date	—
Expiry date	Aug 25, 1995

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/7671
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Thermoplastic, elastic polyurethanes which are soluble in ethers and/or ketones and have a high surface hardness and high modulus of elasticity are manufactured from a polyester-ol and/or a polyether-ol, a substituted or unsubstituted diisocyanato-diphenylmethane or diisocyanato-diphenylsulfone, an aliphatic, branched-chain diol of the formula HOCH.sub.2 --CR.sup.1 R.sup.2 --CO.sub.2 OH, in which R.sup.1 is alkyl and R.sup.2 is alkyl or hydrogen, and, optionally, a triol.

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