Dow Corning Corporation

Dow Corning S.a.

Dow Silicones Corporation

Anne-Lise Girboux

Leon Andre Marteaux

Thomas Bekemeier

Scott B Poplawski

Marie-Agnes Leboucher

Thomas Daniel Bekemeier

Aminofunctional silicone emulsions are prepared by forming a mixture of A) 100 parts of a polydialkylsiloxane Having a viscosity of at least 50,000 mm/s at 23&#xb0; C., and B) 0.1 to 100 parts of an aminofunctional organopolysiloxane, admixing C) 0.1 to 50 parts of a halide free quaternary ammonium surfactant containing at least 10 carbon atoms, and a sufficient amount of water to form an emulsion.

Emulsions of aminofunctional silicones

In a process for the preparation of an emulsion of a silicone organic block copolymer in water, a polydiorganosiloxane having terminal reactive groups (A), an organic material having terminal groups (B) which are reactive with the groups (A) and a catalyst are emulsified in water with a surfactant and the resulting emulsion is subjected to conditions under which the reaction between groups (A) and (B) proceeds in the presence of the catalyst, thereby forming a copolymer chain containing polysiloxane blocks and blocks of organic material. Preferred emulsions comprise a copolymer comprising polydiorganosiloxane blocks and organic blocks, having a viscosity in the range 10 to 1000000 Pa.s and a mean particle size of 0.3 to 1000 micrometers.

Silicone polymer emulsions

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Jurbise, Belgium

Anne-Lise Girboux