Patent · US Expired

Highly functional, highly branched polyureas

US7645855B2 · kind B2 · utility

1Cited by

4References

9Claims

0Family size

Assignee

BASF SE

Inventors

Bernd Bruchmann · Ludwigshafen, DE
Jean-Francois Stumbe · Strasbourg, FR
Eva Wagner · Bad Dürkheim, DE

Key dates

Filing date	Nov 4, 2004
Grant date	Jan 12, 2010
Priority date	—
Expiry date	Dec 2, 2025

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G71/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for preparing high-functionality highly branched polyureas which comprises reacting one or more carbonates with one or more amines having at least two primary and/or secondary amino groups, at least one amine having at least three primary and/or secondary amino groups.

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