Patent · US Active

Method for producing formaldehyde-alkyl carbonate-copolymers

US10030100B2 · kind B2 · utility

0Cited by

2References

16Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Aurel Wolf · Wülfrath, DE
Ilja Peckermann
Jens Langanke · Mechernich, DE

Key dates

Filing date	Dec 5, 2014
Grant date	Jul 24, 2018
Priority date	—
Expiry date	Dec 5, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L59/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a method for producing formaldehyde-alkylene carbonate copolymers comprising the step of reacting trimeric, oligomeric and/or polymeric formaldehyde with an alkylene carbonate in the presence of a catalyst. Said invention further relates to copolymers obtainable by this method and the reaction products thereof with polyisocyanates.

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