Abstract:
THE PRESENT INVENTION PROVIDES A SILICON-CONTAINING CURABLE COMPOSITION WHICH CONTAINS: A SPECIFIC AMOUNT OF A SILICON-CONTAINING POLYMER THAT IS OBTAINED BY THE HYDROLYSIS-CONDENSATION OF AN ORGANOSILANE MIXTURE CONTAINING SPECIFIC AMOUNTS OF ORGANOSILOXANES REPRESENTED BY FORMULA (1-1) TO FORMULA (1-5) AND THAT HAS AN MW OF 300-100,000; A SPECIFIC AMOUNT OF A PREPOLYMER THAT IS OBTAINED BY HYDROSILYLATING A CYCLIC SILOXANE COMPOUND REPRESENTED BY FORMULA (2) AND A COMPOUND REPRESENTED BY FORMULA (3-1), (3-2) OR (3-3) AND THAT HAS TWO OR MORE SI-H GROUPS IN EACH MOLECULE; A SPECIFIC AMOUNT OF A LINEAR SILOXANE COMPOUND THAT HAS TWO OR MORE CARBON-CARBON DOUBLE BONDS, EACH OF WHICH IS REACTIVE WITH AN SI-H GROUP, IN EACH MOLECULE; A SPECIFIC AMOUNT OF AN ORGANIC PEROXIDE AND A SPECIFIC AMOUNT OF A METAL CATALYST; AND A SPECIFIC AMOUNT OF A FILLER. IN THIS CONNECTION, FORMULA (1-1) TO FORMULA (1-5), FORMULA (2), AND FORMULA (3-1) TO FORMULA (3-3) ARE AS SPECIFICALLY DEFINED IN THE DESCRIPTION.
Abstract:
A silicon-containing curing composition comprising a specific amount of a silicon-containing polymer having an Mw of 300 to 100,000 obtained by hydrolysis and condensation of an organosilane mixture containing specific amounts of organosiloxanes of formulae (1-1) through (1-5); a specific amount of a prepolymer containing at least two Si-H groups per molecule obtained by hydrosilylation between a cyclic siloxane compound of formula (2) and a compound of formula (3-1), (3-2), or (3-3); a specific amount of a linear siloxane compound containing more than one carbon-carbon double bond reactive with Si-H or Si-CH 3 per molecule; specific amounts of an organic peroxide and a metal catalyst; and a specific amount of a filler. The details for the formulae (1-1) to (1-5), (2), (3-1) to (3-3) are as described in the specification.
Abstract:
PROBLEM TO BE SOLVED: To provide a silicon-containing curable white resin composition which is excellent in heat resistance, light resistance, cracking resistance and various mechanical and physical properties such as warpage and is useful as an optical semiconductor material or the like and to provide a cured product obtained by curing the silicon-containing curable white resin composition, and an optical semiconductor package and a reflecting material which are obtained by using the cured product.SOLUTION: A silicon-containing curable white resin composition contains: a polymer containing specific silicon; a prepolymer containing two or more Si-H groups in one molecule thereof; a linear siloxane compound containing two or more carbon-carbon double bonds, each of which has reactivity with the Si-H group or a Si-CH, in one molecule thereof; an organic peroxide; a metallic catalyst; and a filler or white pigment having specific particle size.