Curable silicone composition

• US 5,409,963 A
• Filed: 12/28/1993
• Issued: 04/25/1995
• Est. Priority Date: 12/28/1993
• Status: Expired due to Fees

• Current Assignee: ThreeBond Co., Ltd.
• Original Assignee: ThreeBond Co., Ltd.
• Inventors: Takfoka, Toru
• Primary Examiner(s): Bleutge, John C.
• Assistant Examiner(s): Sweet, Mark D.
• Application Number:
  US08/174,239
• Time in Patent Office: 483 Days
• Field of Search: 522/31, 522/32, 524/266, 524/268, 524/588, 528/15, 528/17, 528/32, 528/34
• US Class Current: 522/31
• CPC Class Codes: C08F 30/08 containing silicon

Abstract

A silicone composition capable of being cured by both a moisture-curing mechanism and an ultraviolet (UV) curing mechanism is provided. The silicone composition comprises:

1 a reactive organosiloxane prepared by a condensation reaction of a silicone (1) represented by the general formula ##STR1## where R¹ and R² are each an organo group, and a is a number corresponding to a kinematic viscosity of 25-50,000 cSt, measured at 25° C., with a vinyl ether silane compound represented by the general formula: ##STR2## where m and n are each an integer of 1 to 5, R³ and R⁴ are each an alkyl group having 1 to 3 carbon atoms or allyl, and b is 0 or 1;

2 0-70 parts by weight of a silicone oil having trimethylsilyl group as an end group;

3 a catalytic amount of a photopolymerization catalyst; and

4 a catalytic amount of a silicone moisture-curing catalyst.

Claims

1. A silicone composition capable of being cured by both a moisture-curing and ultraviolet curing mechanisms comprising:

(a) a reactive organosiloxane prepared by a condensation reaction of a silicone having the general formula ##STR8## where R¹ and R² are each an organo group; and

a is a number corresponding to a kinematic viscosity of 25-50,000 cSt, measured at 25°

C., with a vinyl ether silane compound having the general formula ##STR9## where m and n are each an integer of 1 to 5;

R³ and R⁴ are each an alkyl group having 1 to 3 carbon atoms or allyl; and

b is 0 or 1;

(b) 0-70 parts by weight of a silicone oil per 100 parts by weight of the silicone composition, said silicone oil having a trimethylsilyl group as an end group;

(c) an catalytic effective amount of a photopolymerization catalyst; and

(d) a catalytic effective amount of a silicone moisture curing catalyst.

2. The composition of claim 1 wherein R¹ and R² are each independently a hydrocarbon group having 1 to 10 carbon atoms and are selected from the group consisting of alkyl, cycloalkyl, alkenyl, aryl and one of the above substituted with an inert group.

3. The composition of claim 1 wherein the silicone oil has a kinematic viscosity of 50 to 5,000 cSt, measured at 25°

C.

4. The composition of claim 1 wherein the photopolymerization catalyst is an onium salt.