Room temperature curable organopolysiloxane composition
First Claim
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1. A curable composition comprising:
- a) at least one silanol-terminated diorganopolysiloxane;
b) at least one alkylsilicate crosslinker having the formula;
(R14O)(R15O)(R16O)(R17O)Siwhere R14, R15, R16 and R17 are chosen independently from monovalent C1 to C60 hydrocarbon radicals;
c) at least one catalyst for the crosslinking reaction;
d) at least one orcianic nanoclay; and
, optionally; and
e) at least one solid polymer having a permeability to gas that is less than the permeability of the crosslinked diorganopolysiloxane(s).
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Abstract
This invention relates to a room temperature curable composition containing, inter alia, diorganopolysiloxane(s) and organic nanoclay(s), the cured composition exhibiting low permeability to gas(es).
42 Citations
25 Claims
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1. A curable composition comprising:
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a) at least one silanol-terminated diorganopolysiloxane; b) at least one alkylsilicate crosslinker having the formula;
(R14O)(R15O)(R16O)(R17O)Siwhere R14, R15, R16 and R17 are chosen independently from monovalent C1 to C60 hydrocarbon radicals; c) at least one catalyst for the crosslinking reaction; d) at least one orcianic nanoclay; and
, optionally; ande) at least one solid polymer having a permeability to gas that is less than the permeability of the crosslinked diorganopolysiloxane(s). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification