C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/5321
C08L 83/06 (2006.01) C08K 3/36 (2006.01)
Patent
CA 1043924
Abstract of the Disclosure A curable composition, storable under substantially anhydrous conditions is obtained by mixing under substantially anhydrous conditions, below 60°C. and under shear conditions which do not substantially alter filler structure, 100 parts by weight of a hydroxyl endblocked polydimethylsiloxane, 70 to 150 parts by weight of a finely divided agglomerated precipitated acicular calcium carbonate, 35 to 200 parts by weight of an organic solvent, from 12 to 20 parts by weight of a monalkyltriacetoxysilane and a catalytic amount of an organotin carboxylate. Exposing this curable mixture to atmospheric moisture and allowing the organic solvent to evaporate provides a cured concerent solid elastomeric material which is paintable with at least one type of decorative organic base paint which forms a continuous roating over the surface and adheres thereto. Silicone rubber compositions are also described which when cured to elastomers have paintable surfaces.
243408
Clark William H.
Johnson Robert D.
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