Patent · US Expired

Tertiary amines having carbonate and urethane groups

US5834579A · kind A · utility

3Cited by

3References

3Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Klaus Konig · Leverkusen, DE
Ulrich Liman · Monheim, DE
Josef Sanders · Leverkusen, DE

Key dates

Filing date	Jun 16, 1997
Grant date	Nov 10, 1998
Priority date	—
Expiry date	Jun 16, 2017

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31551
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Tertiary amines having carbonate and urethane groups and optionally hydroxyl groups are produced by reacting a) a polyhydric alcohol and b) a primary-tertiary diamine with c) a carbonic acid derivative selected from the group consisting of optionally cyclic carbonates, urea, phosgene and bis-chlorocarbonates of alcohols of the same type as those used as component a). This reaction may be carried out in one or two steps. The tertiary amines produced by this process are useful as catalysts, which may optionally be incorporated into an isocyanate-reactive material, in the isocyanate addition reaction for the production of polyurethane plastics. These tertiary amines are particularly useful for the production of foam backed plastic films.

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