Electroviscous liquids

Details Electroviscous liquids Electroviscous liquids

C - Chemistry, Metallurgy

09

K

31/105, 253/131

C09K 3/00 (2006.01) C08K 3/36 (2006.01) C08L 83/04 (2006.01) C10M 169/00 (2006.01) C10M 171/00 (2006.01)

Patent

CA 1255091

Electroviscous liquids A B S T R A C T The electroviscous suspension is based on a mixture of aqueous silica gel with silicone oil as the liquid phase to which a dispersant is added. The dispersant consists of amino functional or silicon-functional polysiloxanes having a molecular weight above 800. The concentration of the dispersant is from 1 to 30% by weight and preferably from 5 to 20% by weight, based on the silica gel particles. Electroviscous suspensions such as these are distinguished by the fact that they are highly compatible with elastomeric materials, non-sedimenting, non-inflammable and physiologic- ally acceptable. In addition, they are heat- and freeze- resistant over a wide temperature range and are largely unaffected by temperature and pressure in their viscosity.

486134

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