Adhesives having improved chemical resistance and curable silicone compositions for preparing the adhesives
First Claim
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1. A method comprising:
- (1) applying a composition to a substrate, and(2) curing the composition;
where the composition is prepared by mixing components comprising(I) a polyorganosiloxane having an average of at least two unsaturated organic groups per molecule,where component (I) is free of fluorine atoms;
(II) an organohydrogenpolysiloxane having an average of at least two silicon-bonded hydrogen atoms per molecule,where component (II) is free of fluorine atoms;
(III) a hydrosilylation catalyst;
(IV) a fluoroorganosilicone having at least one functional group reactive with component (I), component (II), or both;
(V) an unsaturated ester-functional compound comprising
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Abstract
This invention relates to a composition that can be cured to form an adhesive. The adhesive is useful in the electronics industry. The composition is prepared by mixing components including:
- (I) a polyorganosiloxane having an average of at least two terminally-unsaturated organic groups per molecule,
- (II) an organohydrogenpolysiloxane having an average of at least two silicon-bonded hydrogen atoms per molecule,
- (III) a hydrosilylation catalyst,
- (IV) a fluoroorganosilicone having at least one functional group reactive with component (I), component (II), or both,
- (V) an unsaturated ester-functional compound, and
- (VI) an adhesion promoter.
The composition may also include one or more optional components selected from (VII) a void reducing agent, (VIII) a pigment, (IX) a filler, (X) a cure modifier, (XI) a rheology modifier, and (XII) a spacer.
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Citations
16 Claims
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1. A method comprising:
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(1) applying a composition to a substrate, and (2) curing the composition; where the composition is prepared by mixing components comprising (I) a polyorganosiloxane having an average of at least two unsaturated organic groups per molecule, where component (I) is free of fluorine atoms; (II) an organohydrogenpolysiloxane having an average of at least two silicon-bonded hydrogen atoms per molecule, where component (II) is free of fluorine atoms; (III) a hydrosilylation catalyst; (IV) a fluoroorganosilicone having at least one functional group reactive with component (I), component (II), or both; (V) an unsaturated ester-functional compound comprising - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification