Process for preparing a silica-based organic-inorganic hybrid resin and the organic-inorganic hybrid resin prepared therefrom
AssigneeIndustrial Technology Research Institute
InventorsMing-Shi Lee, Chin-I Lin, Chao-Kang Chang, Ching-Jiuh Kang, Kuei-Lan Peng
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Abstract
A process for preparing silica-based organic-inorganic hybrid resin using sol-gel process. Phenol is used as catalyst to reduce the gel time of the sol-gel process and cyclosiloxane is used as modifier to increase the toughness of the resultant inorganic-organic hybrid resin.
Claims24
A process for preparing a silica-based inorganic-organic hybrid resin, comprising the following steps:
- (a) hydrolyzing a silane compound having a formula of R1nSi(OR2)4−n wherein n is an integer of 0, 1, 2 or 3, R1 is a terminal group selected from the group consisting of alkyl, epoxy, alkenyl, amino, carboxyl, and hydroxy, as well as an alkyl having the above-mentioned terminal group, R2 is an C1-C4 alkyl in the presence of phenol or phenolic resin;
- (b) condensing said hydrolyzed silane to obtain a silica cluster;
- (c) reacting said silica cluster with a siloxane to obtain a modified silica cluster;
- and
- (d) reacting said modified silica cluster with a thermosetting resin having at least one hydroxy group in its structure to obtain the silica-based inorganic-organic hybrid resin.
A silica-based inorganic-organic hybrid resin, prepared from at least the following ingredients:
- (a) a silane compound having a formula of R1nSi(OR2)4−n wherein n is an integer of 0, 1, 2 or 3, R1 is a terminal group selected from the group consisting of alkyl, epoxy, alkenyl, amino, carboxyl, and hydroxy, as well as an alkyl having the above-mentioned terminal group, R2 is an C1-C4 alkyl;
- (b) a cyclosiloxane having a formula of (R23SiO)m wherein R3 is an alkyl and m is an integer equal or greater than 3;
- (c) a thermosetting resin;
- and
- (d) an organic solvent.
A process for preparing a silica-based inorganic-organic hybrid resin, comprising the following steps:
- (a) hydrolyzing a silane compound having a formula of R1nSi(OR2)4−n wherein n is an integer of 0, 1, 2 or 3, R1 is a terminal group selected from the group consisting of alkyl, epoxy, alkenyl, amino, carboxyl, and hydroxy, as well as an alkyl having the above-mentioned terminal group, R2 is an C1-C4 alkyl in the presence of phenol or phenolic resin;
- (b) condensing said hydrolyzed silane to obtain a silica cluster;
- and
- (c) reacting said silica cluster with a thermosetting resin having at least one hydroxy group in its structure to obtain the silica-based inorganic-organic hybrid resin.
Dependencies are inferred from the claim text.