Patent · US Expired

Aqueous dispersion of a self-crosslinking resin

US4473678A · kind A · utility

15Cited by

0References

2Claims

0Family size

Assignee

Rohm Co., Ltd. · JP

Inventors

Herbert Fink · Emmelshausen, DE
Norbert Suetterlin
Klaus Huebner · Ober-Ramstadt, DE
Werner Siol · Pfungstadt, DE

Key dates

Filing date	Nov 15, 1982
Grant date	Sep 25, 1984
Priority date	—
Expiry date	Nov 15, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F6/006
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

What are disclosed are aqueous dispersions of a self-crosslinking synthetic resin, said dispersions consisting of an aqueous phase containing from 0.2 to 5 weight percent of urea and, dispersed therein, resin particles formed of a vinyl polymer comprising (a) from 52.1 to 97.9 weight percent of acrylate or methacrylate esters, vinyl esters, or styrene; (b) from 0.1 to 10 weight percent of N-methylol acrylamide or methacrylamide; (c) from 2 to 10 weight percent of an hydroxyalkyl ester of an unsaturated carboxylic acid; and (d) 0 to 27.9 weight percent of other monomers, which dispersions, on drying and condensation to form films, liberate much less formaldehyde than comparable dispersions without urea while retaining good solvent resistance.

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