Multiphase formulations of organosilicon compounds

US6451909B1 · kind B1 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Christian Herzig · Waging am See, DE
• Robert Schrock · Altötting, DE
• Petra Gratzl · Tecklenburg, DE
• Reinhard Stallbauer · Gumpersdorf, DE

Key dates

• Filing date: Dec 14, 2000
• Grant date: Sep 17, 2002
• Expiry date: Feb 27, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2383/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the preparation of multiphase formulations of organosilicon compounds by (A) formation of a mixture containing organic compound(s) (1) containing at least two aliphatic double bonds and of the general formulaR2(CR1═CH2)x,  (1)in whichR1 are a hydrogen atom or an alkyl radical having 1 to 6 carbon atoms per radical,R2 is a divalent, trivalent or tetravalent hydrocarbon radical having 1 to 25 carbon atoms per radical; andx denotes 2, 3 or 4 corresponding to the valence of R2; andan organopolysiloxane (2) having on average more than one Si-bonded hydrogen atom per molecule;a catalyst (3) promoting the addition of Si-bonded hydrogen at an aliphatic double bond;an emulsifier (4); andan agent (5) immiscible with (1) and (2); and(B) emulsification of the mixture,with the proviso that the ratio of aliphatic double bond in organic compound (1) to Si-bonded hydrogen in the organopolysiloxane (2) in (A) is such that toluene-soluble siloxane copolymers are obtained.