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Patent Searching and Data


Title:
PRODUCTION OF AQUEOUS SILICONE EMULSION COMPOSITION
Document Type and Number:
Japanese Patent JPS61246255
Kind Code:
A
Abstract:

PURPOSE: To produce the titled compsn. which does not cause peeling from the interface during or after curing, by adding an epoxy-functional silane coupling agent, a filler and a dispersant to a base emulsion.

CONSTITUTION: 1W150pts. (by weight ; the same applies hereinbelow) colloidal silica (A) having a particle size of 0.0001W0.1μm or 0.3W30pts. alkali metal silicate (A), 0.01W1.5pts. curing catalyst (B), 2W30pts. emulsifier (C) and water are mixed with 100pts.wt. linear organopolysiloxane (D) contg. at least two hydroxyl groups attached to a Si atom per molecule and having an MW of 5,000 or above. The pH of the resulting base emulsion is adjusted to 9W12, and the emulsion is aged at 10W95°C for such a period of time that an elastomeric substance is obtd. when water is removed. 0.5W30pts. epoxy- functional silane coupling agent or hydrolyzate (condensate) (E), 50W300pts. filler (F) having an average particle size of 10μ or below and 0.1W2.0wt% (based on the quantity of component F) dispersant (G) are added to the emulsion.


Inventors:
KONDO HIDETOSHI
KOSHII TARO
Application Number:
JP8784585A
Publication Date:
November 01, 1986
Filing Date:
April 24, 1985
Export Citation:
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Assignee:
TORAY SILICONE CO
International Classes:
C08L83/00; C08J3/03; C08K3/36; C08K5/5435; C08L83/04; C08L83/06; C09D5/02; C09D183/04; C09D183/06; C09K3/10; C09K3/12; (IPC1-7): C08L83/06; C09D3/82; C09D5/02