Aqueous dispersible defoamers

US4477371A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Peter Huber · Neubiberg, DE
• Franz Wimmer · Ried im Innkreis, AT
• Ernst Innertsberger · Burghausen, DE
• Jakob Schmidlkofer · Schweich, DE

Key dates

• Filing date: Jul 29, 1983
• Grant date: Oct 16, 1984
• Expiry date: Jul 29, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/373
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Aqueous dispersible defoamers containing an organopolysiloxane, filler, a dispersant which is at least in part a surfactant and 2,2,4-trimethyl-1,3 diisobutyloxypentane, in which at least a portion of the organopolysiloxane contains in addition to the SiC-bonded organic radicals, SiOC-bonded radicals having at least 6 carbon atoms per radical which contain carbon and hydrogen atoms and/or carbon, hydrogen and at least 2 oxygen atoms per radical and may also contain at least one silicon atom.