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US 11,028,286 B2Granted
Dual curable silicone compositions
AssigneeDow Silicones Corporation
InventorsJunying Liu, Nanguo Liu, Joel McDonald
Life of this patent
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Abstract
A dual curable silicone composition, comprising: (a) a silicone resin comprising at least one epoxy group, (b) a silicone polymer comprising at least one epoxy group and at least one hydrolyzable group, (c) a catalytic amount of onium salt photo catalyst, (d) a catalytic amount of condensation catalyst, wherein the composition is curable when exposed to UV radiation, H2O, or UV radiation and H2O.
Claims10
A dual curable silicone composition, comprising:
- (a) a silicone resin comprising at least one epoxy group, wherein the silicon resin is according to formula (I)
- [R1R2R3SiO1/2]a[R4R5SiO2/2]b[R6SiO3/2]c[SiO4/2]d, (I)
- where each R1-6 is independently hydrocarbyl, H, hydroxyl, alkoxy, or epoxy-containing group and at least one of R1-6 is an epoxy-containing group, and where a+b+c+d=1 and c+d>0,
- (b) a silicone polymer comprising at least one epoxy group and at least one hydrolyzable group, wherein the silicon polymer is according to formula (II)
- [R7R8R9SiO1/2]e[R10R11SiO2/2]f, (II)
- where each R7-11 is independently hydrocarbyl, H, hydroxyl, a hydrolyzable group, or epoxy-containing group and at least one of R7-11 group is hydrolyzable group and at least one of one R7-11 group is an epoxy-containing group and wherein e>0 and f>0,
- (c) a catalytic amount of onium salt photo catalyst,
- (d) a catalytic amount of condensation catalyst,
- wherein the composition is curable when exposed to UV radiation, H2O, or UV radiation and H2O.
6 more elements
A method of making a dual curable composition, the method comprising:
- combining
- (a) a silicone resin comprising at least one epoxy group, wherein the silicon resin is according to formula (I)
- [R1R2R3SiO1/2]a[R4R5SiO2/2]b[R6SiO3/2]c[SiO4/2]d, (I)
- where each R1-6 is independently hydrocarbyl, H, hydroxyl, alkoxy, or epoxy-containing group and at least one of R1-6 is an epoxy-containing group, and where a+b+c+d=1 and c+d>0,
- (b) a silicone polymer comprising at least one epoxy group and at least one hydrolyzable group, wherein the silicon polymer is according to formula (II)
- [R7R8R9SiO1/2]e[R10R11SiO2/2]f, (II)
- where each R7-11 is independently hydrocarbyl, H, hydroxyl, a hydrolyzable group, or epoxy-containing group and at least one of R7-11 group is hydrolyzable group and at least one of one R7-11 group is an epoxy-containing group and wherein e>0 and f>0,
- (c) a catalytic amount of onium salt photo catalyst,
- (d) a catalytic amount of condensation catalyst,
- wherein the composition is curable when exposed to UV light or hydrolysis conditions.
7 more elements
Dependencies are inferred from the claim text.