Crosslinkable powder composition which is redispersible in water

US6228937A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Herbert Eck · Burghausen, DE
• Theo Mayer · Julbach, DE
• Hans-Peter Weitzel · Reischach, DE

Key dates

• Filing date: Feb 22, 2000
• Grant date: May 8, 2001
• Expiry date: Feb 22, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/19
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A crosslinkable powder composition is provided which is redispersible in water and comprises PA0 a) from 30 to 95 parts by weight of a water-insoluble, film-forming polymer of one or more free-radically polymerizable, ethylenically unsaturated monomers, PA0 b) from 5 to 70 parts by weight of a water-soluble polymer, where at least one of the polymer components a) and b) comprises one or more comonomer units containing reactive groups which can form a chemical, nonionic bond with one another or with crosslinkers, and the parts by weight of a) and b) add up to 100 parts by weight, and PA0 c) from 0.01 to 5% by weight, based on the total weight of a) and b), of at least one phase transfer catalyst.