Back to results
US 2003/0158326 A1Published application
Alkoxysilyl functional silicone based materials
AssigneeDow Corning Corporation
InventorsArnold Wade Lomas, William James Schulz JR.
Life of this patent
Estimating the term…
Abstract
There are disclosed alkoxysilyl functional silicone based materials that are thermodynamically stable, methods for making them and their uses. The methods comprise cross-linking of reactants that are dispersed in a diluent.
Claims29
A thermodynamically stable material comprising:
- (A) a cross-linked siloxane comprising:
- alkoxysilyl functionality, —X—SiR4n(OR5)3-n, and cross-links, —E1—Y—E2—, with each end of such cross-links bonded to a silicon,
- wherein,
- X is a divalent group that is a hydrocarbon, a siloxane or some combination of these,
- R4 and R5 are independently monovalent hydrocarbon groups,
- E1 and E2 are independently —CH2CH2— or —CH═CH—,
- Y is a divalent group that is a hydrocarbon, a siloxane or some combination of these and
- n is 0 to 2;
- and
- (B) a diluent.
7 more elements
A method of making a thermodynamically stable material, the method comprising cross-linking, in the presence of a hydrosilylation catalyst,
- (1) an ≡SiH functional siloxane and,
- (2) an alpha, omega diene, diyne or ene-yne.
- with the provisos
- that at least one of (1) and (2) has alkoxysilyl functionality, —X—SiR4n(OR5)3-n,
- where,
- X is a divalent group that is a hydrocarbon a siloxane or some combination of these,
- R4 and R5 are independently monovalent hydrocarbon groups and
- n is 0 to 2,
- that (1) and (2) are dispersed in a diluent, and that the weight ratio of (1)+(2)+ the product of the cross-linking of (1) and (2):diluent is 1:100 to 10:1.
6 more elements
The method of clam 12 wherein
- (1) is an ≡SiH functional siloxane having alkoxysilyl functionality of the form,
- —X—SiR4n(OR5)3-n, where,
- X is a divalent group that is a hydrocarbon, a siloxane or some combination of these,
- R4 and R5 are independently monovalent hydrocarbon groups and
- n is 0to 2.
2 more elements
Dependencies are inferred from the claim text.