Patent · US Expired

Production of polyurethane foams

US6031013A · kind A · utility

8Cited by

5References

10Claims

0Family size

Assignee

BASF SE

Inventors

Dietrich Scherzer · Neustadt, DE
Ulrich Treuling · Bensheim, DE
Jurgen Mertes · Gau-Algesheim, DE
Rolf Illguth · Diepholz, DE

Key dates

Filing date	Oct 21, 1998
Grant date	Feb 29, 2000
Priority date	—
Expiry date	Oct 21, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2110/0083
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

In a process for producing foams based on polyisocyanate polyaddition products by reacting isocyanates with compounds which are reactive toward isocyanates and have a molecular weight of from 400 to 8000 in the presence of blowing agents, catalysts and, if desired, chain extenders and/or crosslinkers having a molecular weight of <400, auxiliaries and/or additives, use is made of isocyanates having isocyanurate and/or biuret structures, at least one compound which is reactive toward isocyanates, has a molecular weight of from 400 to 8000 and contains at least 50% primary hydroxyl groups, as catalysts at least one tertiary amine and at least one metal salt plus from 0.5 to 5.3% by weight of water, based on the weight of the compounds which are reactive toward isocyanates and have a molecular weight of from 400 to 8000, and the reaction is carried out at >40.degree. C.

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