Patent · US Active

Polyester-modified polybutadienols for producing polyurethane elastomers and thermoplastic polyurethanes

US11066508B2 · kind B2 · utility

1Cited by

10References

4Claims

0Family size

Assignee

BASF SE

Inventors

Berend Eling · Ludwigshafen, DE
Jan Dilcher · Dahme/Mark, DE
Irina Fink · Hamburg, DE
Gerrit Luinstra · Mannheim, DE

Key dates

Filing date	Aug 17, 2015
Grant date	Jul 20, 2021
Priority date	—
Expiry date	Aug 17, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/797
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to polyurethanes obtainable by reaction of (a) polyisocyanates A selected from modified or unmodified 4,4′-methanediphenyl diisocyanate, higher nuclear homologs of 4,4′-methanediphenyl diisocyanate, isocyanated groups containing prepolymers based on 4,4′-methanediphenyl diisocyanate, and mixtures thereof, with (b) compounds having at least two isocyanate-reactive hydrogen atoms, comprising (b1) block copolymers formed from a polybutadienol and a cyclic ester as component B1, and (b2) low molecular weight extenders or crosslinkers each having a molecular weight of 62 to 500 g/mol as component B2.

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