SILOXANE CROSSLINKING PROCESSES EMPLOYING SULFUR COMPOUNDS AND PLATINUM CATALYSTS
First Claim
1. A process for producing a crosslinked product comprising reacting a mixture constituting (a) an alkenyl silicone, (b) a hydrogen siloxane, (c) a cure inhibitor and (d) a hydrosilylation catalyst, optionally in the presence of a solvent, and (e) a sulfur compound in order to produce the crosslinked product, the sulfur compound (e) being a compound of the formula:
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R1—
S—
R2 where R1 and R2 are independently chosen from a H, a substituted or unsubstituted alkyl, a substituted or unsubstituted aryl group, the alkyl and/or aryl groups optionally comprising at least one heteroatom, with the proviso that Formula I is not H2S.
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Abstract
Provided is a composition and process for producing a crosslinked product. The composition comprises a mixture constituting (a) an alkenyl silicone, (b) a hydrogen siloxane, (c) a cure inhibitor and (d) a hydrosilylation catalyst, optionally in the presence of a solvent, and (e) sulfur compounds in order to produce the crosslinked product, and the process comprises reacting such a composition to form a crosslinked product.
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36 Claims
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1. A process for producing a crosslinked product comprising reacting a mixture constituting (a) an alkenyl silicone, (b) a hydrogen siloxane, (c) a cure inhibitor and (d) a hydrosilylation catalyst, optionally in the presence of a solvent, and (e) a sulfur compound in order to produce the crosslinked product, the sulfur compound (e) being a compound of the formula:
-
R1—
S—
R2where R1 and R2 are independently chosen from a H, a substituted or unsubstituted alkyl, a substituted or unsubstituted aryl group, the alkyl and/or aryl groups optionally comprising at least one heteroatom, with the proviso that Formula I is not H2S. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 32, 33, 34, 35, 36)
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19. A composition for producing a crosslinked product, the composition comprising (a) an alkenyl silicone, (b) a hydrogen siloxane, (c) a cure inhibitor and (d) a hydrosilylation catalyst, optionally in the presence of a solvent, and (e) a sulfur compound in order to produce the crosslinked product, the sulfur compound (e) being a compound of the formula:
-
R1—
S—
R2where R1 and R2 are independently chosen from a H, a substituted or unsubstituted alkyl, a substituted or unsubstituted aryl group, the alkyl and/or aryl groups optionally comprising at least one heteroatom, with the proviso that Formula I is not H2S. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification