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US 11,441,034 B2Granted
Polysiloxane composition
AssigneeWacker Chemie AG
InventorsJian Nie, Minlong Xi
Life of this patent
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Abstract
A polysiloxane composition which is curable by condensation, contains at least one hydroxyl-terminated polyorganosiloxane, at least one diacetoxysilane optionally bearing an alkoxy group, at least one multifunctional alkoxysilane, at least one filler, and at least one catalyst.
Claims20
A polysiloxane composition comprising:
- a) at least one hydroxyl-terminated polyorganosiloxane;
- b) at least one diacetoxysilane, having the formula:
- where, R1 and R2 are each independently an alkyl group, or an alkoxy group having one or more carbon atoms;
- c) at least one multifunctional alkoxysilane crosslinker selected from the group consisting of methyltrimethoxysilane, methyltriethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, tetramethoxysilane, tetraethoxyoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, and combinations thereof;
- d) at least one filler;
- and
- e) at least one catalyst.
4 more elements
A polysiloxane composition comprising:
- a) at least one hydroxyl-terminated polyorganosiloxane;
- b) at least one diacetoxysilane, having the formula:
- where, R1 and R2 are each independently an alkyl group, or an alkoxy group having one or more carbon atoms;
- c) at least one multifunctional alkoxysilane;
- d) at least one filler;
- and
- e) at least one catalyst,
- wherein in ingredient (b) R1 and R2 are each independently a C1-C16 alkyl group, and the mass ratio of ingredient (a) to ingredient (b) is (75-1400):
- 1.
6 more elements
A polysiloxane composition comprising:
- a) at least one hydroxyl-terminated polyorganosiloxane;
- b) at least one diacetoxysilane, having the formula:
- where, R1 and R2 are each independently an alkyl group, or an alkoxy group having one or more carbon atoms;
- c) at least one multifunctional alkoxysilane;
- d) at least one filler;
- and
- e) at least one catalyst,
- wherein ingredient (d) is present in an amount of from 20 wt % to 60 wt %, based on the total weight of the starting materials of the polysiloxane composition.
5 more elements
Dependencies are inferred from the claim text.