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US 6,187,834 B1Granted
Radiation curable silicone compositions
AssigneeDow Corning Corporation
InventorsLeroy Elton Thayer, James Steven Tonge, Gary Allen Vincent
Life of this patent
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Abstract
This invention relates to a radiation curable silicone coating composition comprising an alkoxylated resin-polymer organosilicone network containing radiation curable functionality and a cationic photoinitiator. The radiation curable silicone compositions of this invention are useful as fast curing low and high release coating compositions which are especially suitable for release of pressure sensitive adhesives.
Claims45
A radiation curable silicone composition comprising:
- (a) at least one alkoxylated resin-polymer organosilicone network obtained by a method comprising:
- (I) reacting a mixture comprising:
- (A) a Component selected from the group consisting of:
- (A)(i) at least one silicone polymer containing at least two hydroxy groups;
- (A)(ii) at least one organic polymer containing at least two hydroxy groups;
- and
- (A)(iii) a mixture of (A)(i) and (A)(ii);
- (B) an MQ organosilicone resin;
- (C) at least one alkoxysilane containing at least one radiation curable group;
- and
- (D) a catalytic amount of a basic catalyst;
- and
- (II) adding (E) a neutralizing agent to the product of (I);
- and
- (b) a cationic photoinitiator.
12 more elements
A radiation curable silicone composition comprising:
- (a′) at least one alkoxylated resin-polymer organosilicone network obtained by a method comprising:
- (I) reacting a mixture comprising:
- (A) a Component selected from the group consisting of
- (A)(i) at least one silicone polymer containing at least two hydroxy groups,
- (A)(ii) at least one organic polymer containing at least two hydroxy groups, and (A)(iii) a mixture of (A)(i) and (A)(ii);
- (B) an MQ organosilicone resin;
- (C) at least one alkyl functional alkoxysilane;
- and
- (D) a catalytic amount of a basic catalyst;
- (II) adding (E) a neutralizing agent to the product of (I);
- and
- (III) reacting the product of (II) with (F) a mono-organic alcohol containing at least one radiation curable group in the presence of (G) a transesterification catalyst;
- and
- (b′) a cationic photoinitiator.
11 more elements
A method of making an article of manufacture comprising:
- (I) applying a radiation curable silicone composition comprising:
- (a) at least one alkoxylated resin-polymer organosilicone network obtained by a method comprising:
- (I) reacting a mixture comprising:
- (A) a Component selected from the group consisting of:
- (A)(i) at least one silicone polymer containing at least two hydroxy groups;
- (A)(ii) at least one organic polymer containing at least two hydroxy groups;
- and
- (A)(iii) a mixture of (A)(i) and (A)(ii);
- (B) an MQ organosilicone resin;
- (C) at least one alkoxysilane containing at least one radiation curable group;
- and
- (D) a catalytic amount of a basic catalyst;
- and
- (II) adding (E) a neutralizing agent to the product of (I);
- and
- (b) a cationic photoinitiator to a solid substrate to form a coating;
- and
- (II) exposing the coating to an energy source selected from the group consisting of (i) actinic radiation and (ii) actinic radiation in combination with heat in an amount sufficient to cure the coating.
15 more elements
A method of making an article of manufacture comprising:
- (I) applying a radiation curable silicone composition comprising:
- (a′) at least one alkoxylated resin-polymer organosilicone network obtained by a method comprising:
- (I) reacting a mixture comprising:
- (A) a Component selected from the group consisting of
- (A)(i) at least one silicone polymer containing at least two hydroxy groups,
- (A)(ii) at least one organic polymer containing at least two hydroxy groups, and (A)(iii) a mixture of (A)(i) and (A)(ii);
- (B) an MQ organosilicone resin;
- (C) at least one alkyl functional alkoxysilane;
- and
- (D) a catalytic amount of a basic catalyst;
- (II) adding (E) a neutralizing agent to the product of (I);
- and
- (III) reacting the product of (II) with (F) a mono-organic alcohol containing at least one radiation curable group in the presence of (G) a transesterification catalyst;
- and (b′) a cationic photoinitiator. to a solid substrate to form a coating;
- and
- (II) exposing the coating to an energy source selected from the group consisting of (i) actinic radiation and (ii) actinic radiation in combination with heat in an amount sufficient to cure the coating.
13 more elements
Dependencies are inferred from the claim text.