METHOD FOR PREPARING ROOM TEMPERATURE CURABLE POLYORGANOSILOXANE COMPOSITION

PROBLEM TO BE SOLVED: To provide a room temperature curable polyorganosiloxane composition which has a low viscosity and fluidity, ensures a low modulus, high elongation, high strength and good adhesion of a cured product thereof, and does not contaminate the surrounding part.SOLUTION: There is prov...

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Bibliographic Details
Main Author OBA TOSHIO
Format Patent
LanguageEnglish
Published 31.10.2013
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:PROBLEM TO BE SOLVED: To provide a room temperature curable polyorganosiloxane composition which has a low viscosity and fluidity, ensures a low modulus, high elongation, high strength and good adhesion of a cured product thereof, and does not contaminate the surrounding part.SOLUTION: There is provided a method for preparing a room temperature curable polyorganosiloxane composition comprising: 100 parts of (A) a polyorganosiloxane having on average two or more silanol groups and/or ketoxymato groups; 5-100 parts of (B) a polyorganosiloxane having a silanol group or a ketoxymato group; 20-200 parts of (C) calcium carbonate; 0.5-25 parts of (D) a silane compound having a hydrolyzable group; and 0.01-10 parts of (E) a curing catalyst; wherein the component (D) contains 0.05-5.0 parts of (D1) a silane having a mercapto group. The component (D1) is added to a mixture of the component (A), the component (B) and the component (C) before blending the mixture with the other component (D).
Bibliography:Application Number: JP20130151375