Patent · US Expired

Activators for the production of polyurethane foams

US6759363B2 · kind B2 · utility

4Cited by

3References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Peter Haas · Brisbane, AU
Dirk Wegener · Bielefeld, DE
Hartwig Grammes · Leverkusen, DE

Key dates

Filing date	Nov 9, 2001
Grant date	Jul 6, 2004
Priority date	—
Expiry date	Jul 30, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2290/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Activators with reduced volatility that are liquid at room temperature are obtained as the reaction product of (A) a secondary amine or primary alcohol having at least one tertiary amine group, (B) a polyisocyanate of the diphenylmethane series having a functionality of from 2.5 to 4.0 and an OH-functional reactive component capable of addition to isocyanate. These activators are useful for the production of polyurethane foams having improved emission behavior.

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