Polysiloxane formulations and coatings for optoelectronic applications
First Claim
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1. A crosslinkable composition, comprising:
- a first polysiloxane resin comprising alkyl groups, wherein from 14% to 100% of the carbon atoms in the first polysiloxane resin are contained in the alkyl groups, the balance of carbon atoms contained in aryl groups, the first polysiloxane resin having a weight average molecular weight from 1000 AMU to 10,000 AMU;
a second polysiloxane resin comprising aryl groups, wherein all of the carbon atoms in the second polysiloxane resin are contained in the aryl groups, the second polysiloxane resin having a weight average molecular weight from 900 AMU to 5000 AMU;
at least one solvent; and
at least one heat-activated catalyst.
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Abstract
A crosslinkable composition includes a first silicon-containing resin comprising alkyl groups and alkyl groups and a second silicon-containing resin comprising alkyl groups. The first silicon-containing resin has a weight average molecular weight from 1000 AMU to 10,000 AMU. The second silicon-containing resin has a weight average molecular weight from 900 AMU to 5000 AMU. The composition further includes at least one solvent and at least one heat-activated catalyst.
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Citations
20 Claims
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1. A crosslinkable composition, comprising:
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a first polysiloxane resin comprising alkyl groups, wherein from 14% to 100% of the carbon atoms in the first polysiloxane resin are contained in the alkyl groups, the balance of carbon atoms contained in aryl groups, the first polysiloxane resin having a weight average molecular weight from 1000 AMU to 10,000 AMU; a second polysiloxane resin comprising aryl groups, wherein all of the carbon atoms in the second polysiloxane resin are contained in the aryl groups, the second polysiloxane resin having a weight average molecular weight from 900 AMU to 5000 AMU; at least one solvent; and at least one heat-activated catalyst. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of forming a crosslinked film, the method comprising:
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combining a first polysiloxane resin comprising alkyl groups, a second polysiloxane resin comprising aryl groups, a solvent, and a heat activated catalyst to form a crosslinkable composition, wherein from 14% to 100% of the carbon atoms in the first polysiloxane resin are contained in the alkyl groups, the balance of the carbon atoms contained in aryl groups, the first polysiloxane resin having a weight average molecular weight from 1000 AMU to 10,000 AMU, the second polysiloxane resin having a weight average molecular weight from 900 AMU to 5000 AMU, and all of the carbon atoms in the second polysiloxane resin are contained in the aryl groups; depositing the composition on a substrate; and curing the crosslinkable composition at a temperature of 350°
C. or greater to form a crosslinked film, wherein the crosslinked film has a thickness of 1.5 μ
m or greater. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification