Method for making nanoporous silicone resins from alkylydridosil

Details Method for making nanoporous silicone resins from alkylydridosil Method for making nanoporous silicone resins from alkylydridosil

1999-12-13

2000-11-07

Foelak, Morton

Coating processes

Foraminous product produced

Filter, sponge, or foam

427245, 427373, 427387, 521 77, 521154, B05D 500

Patent

active

061433608

ABSTRACT:
A method for preparing a nanoporous silicone resin which can be used to form low dielectric constant films useful for electrical insulating coatings on electronic devices comprising (A) contacting a hydridosilicon containing resin with a 1-alkene comprising about 8 to 28 carbon atoms in the presence of a platinum group metal-containing hydrosilation catalyst effecting formation of an alkylhydridosiloxane resin where at least 5 percent of silicon atoms are substituted with at least one group comprising about 8 to 28 carbon atoms and at least 45 percent of silicon atoms are substituted with at least one hydrogen atom and (B) heating the alkylhydridosiloxane resin of step (A) at a temperature sufficient to effect curing and thermolysis of alkyl groups comprising about 8 to 28 carbon atoms from the silicon atoms thereby forming a nanoporous silicone resin.

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Journal of Materials Chemistry, 1999, 9, pp. 591-598.

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