Patent · US Expired

Method for producing radically post-cross-linked polymers

US6890967B2 · kind B2 · utility

2Cited by

3References

5Claims

0Family size

Assignee

Cognis Deutschland GmbH & Co. KG · DE

Inventors

Horst Sulzbach · Goldkronach, DE
Ralf Bemmann · Neuss, DE
Rainer Hoefer · Goldkronach, DE
Michael Skwiercz · Langenfeld, DE

Key dates

Filing date	Jan 22, 2001
Grant date	May 10, 2005
Priority date	—
Expiry date	Feb 7, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/68
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Radically post-crosslinked polymers are made by a process comprising the steps of: (1) forming a polyurethane (a*) by reacting a compound (a) with an aliphatic and/or an aromatic isocyanate and a compound (c) wherein compound (a) is the product of the reaction of an epoxidized fatty acid ester and/or an epoxidized triglyceride with acrylic acid and/or methacrylic acid and wherein compound (c) is a polyol ester having two or more C═C double bonds per molecule; (2) forming a crosslinked polyurethane by reacting the polyurethane (a*) with a radical initiator (b). The polymers are useful as components in composites comprised of natural and/or synthetic fibers.

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