Dow Silicones Corporation

Dow Corning Corporation

Université De Tours Francois Rabelais

Elodie Raynaud

Tatiana Dimitrova

Severine Cauvin

Sophie Hanssens

Blondine Donatienne Van Roy

Sylvie Bouzeloc

Cindy Delvalle

Avril E Surgenor

Lok Ming Eva Li

Houria Seghir

Donald Taylor Liles

Yihan Liu

Bertrand Louis Julien Lenoble

Robert D Kennedy

Elise Billes

Marie-Claude Viaud-Massuard

Jeremy Monfray

Peggy Robert

Vincent Bouazza

Jérémy Monfray

The present invention provides water dilutable silicone emulsions comprising a silicone and a silicone polyether; a coating composition comprising the emulsions; a process of making the emulsions; and uses of the emulsions.

Silicone emulsions

Aminofunctional silicone compositions are disclosed comprising: an organopolysiloxane having an average formula of (CH)SiO[(CH)SiO][(CH)RSiO]Si(CH)with less than 1 weight % of nitrogen in its formula, where Ris an aminofunctional group, x is &#x2265;100, y is &#x2265;1 with the proviso the sum of x+y is from 250 to 350; wherein the viscosity of the silicone composition ranges from 1000 to 2500 cP at 25&#xb0; C. and is measured by a Brookfield RV DV viscometer equipped with Pro CP 52 spindle at 20 RPM; and the aminofunctional silicone composition contains less than 0.1 weight % of D4 and less than 0.1 weight % D5 cyclic siloxanes.

Aminofunctional organosiloxanes

Aqueous silicone emulsions are disclosed comprising: A) an aminofunctional organopolysiloxane, B) a quaternary ammonium surfactant having a formula RRRRNX, where Ris an organofunctional group containing at least 10 carbon atoms, Ris Ror a hydrocarbyl containing 1 to 12 carbon atoms, Ris R, R, or an alcohol group containing 2 to 10 carbon atoms, Ris R, R, or R, Xis a halide, sulfate, sulfonate, methosulfate, or ethosulfate, C) a nonionic surfactant, where the aqueous silicone emulsion contains less than 0.2 weight % of D4 and D5 cyclic siloxanes.

Aminofunctional Silicone Emulsions

Aminofunctional silicone compositions are disclosed comprising: an organopolysiloxane having an average formula of (CH)SiO[(CH)SiO][(CH)RSiO]Si(CH)with less than 1 weight % of nitrogen in its formula, where Ris an aminofunctional group, x is &#x2267;100, y is &#x2267;1 with the proviso the sum of x+y is from 250 to 350; wherein the viscosity of the silicone composition ranges from 1000 to 2500 cP at 25&#xb0; C. and is measured by a Brookfield RV DV viscometer equipped with Pro CP 52 spindle at 20 RPM; and the aminofunctional silicone composition contains less than 0.1 weight % of D4 and less than 0.1 weight % D5 cyclic siloxanes.

A method is provided for encapsulating products that can have lipophilic or hydrophilic, including volatile, properties in a polysiloxane membrane that is particularly impervious. A method is also provided for evaluating the imperviousness of capsules. The present method includes the following steps:

Process for manufacturing polysiloxane microcapsules that are functionalized and are not very porous

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Mons, Belgium

Elodie Raynaud