Patent · US Expired

Low-Formaldehyde binders

US4831106A · kind A · utility

12Cited by

4References

8Claims

0Family size

Assignee

BASF SE

Inventors

Fritz E. Kempter · Mannheim, DE
Franz Matejcek · Lambsheim, DE
Werner Neubach · Ludwigshafen, DE
Gerd Busse · Mutterstadt, DE

Key dates

Filing date	Feb 22, 1988
Grant date	May 16, 1989
Priority date	—
Expiry date	Feb 22, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L61/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A low-formaldehyde binder consists essentially of PA0 (A) from 5 to 80% by weight of a water-soluble condensation product of carbonyl number 0-200 which has been prepared by alkaline condensation from 0.1 to 0.4 mole of an aliphatic or cycloaliphatic condensable ketone and 1 mole of formaldehyde, and PA0 (B) from 20 to 95% by weight of 4,5-dihydroxyimidazolidin-2-one and/or an unetherified, partially etherified or completely etherified condensation product thereof with an aliphatic monoaldehyde or dialdehyde.

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