Patent · US Expired

Process for preparing acrylic resin dispersions

US4771098A · kind A · utility

5Cited by

5References

8Claims

0Family size

Assignee

Rohm GmbH Chemische Fabrik · DE

Inventors

Werner Siol · Pfungstadt, DE
Hubert Rauch · Weiterstadt, DE
Norbert Sutterlin · Ober-Ramstadt, DE

Key dates

Filing date	Nov 25, 1986
Grant date	Sep 13, 1988
Priority date	—
Expiry date	Nov 25, 2006

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2/24
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Acrylic resin dispersions are prepared by a monomer addition process in the presence of a free-radical initiator and an emulsifier, wherein a portion of the emulsifier is dissolved in the initial aqueous phase and the remaining portion in the added monomer phase. The new process decreases the formation of coagulates, reduces the required amount of emulsifier, and allows the preparation of dispersions of resins incorporating a large proportion of units derived from water-soluble monomers, such as carboxylic acids.

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