Patent · US Active

Process for preparing polyester alcohols

US9133093B2 · kind B2 · utility

0Cited by

5References

4Claims

0Family size

Assignee

BASF SE

Inventors

Lionel Gehringer · Schaffhouse-près-Seltz, FR
Veronika Wloka · Mannheim, DE
Ulrich Mueller · Hamburg, DE
Marine Boudou · Mannheim, DE
Ulrike Mahn · Mannheim, DE
Elke Guetlich-Hauk · Lambsheim, DE

Key dates

Filing date	Sep 26, 2014
Grant date	Sep 15, 2015
Priority date	—
Expiry date	Sep 26, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G63/87
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a process for preparing polyester alcohols by catalytic reaction of at least one at least polyfunctional carboxylic acid with at least one polyfunctional alcohol and/or by catalytic ring-opening polymerization of cyclic esters in the presence of catalysts, wherein a zeolite is used as catalyst.

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