Silphenylene skeleton-containing silicone type polymer and method for manufacturing the same
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsHiroyuki Yasuda, Takato Sakurai, Takanobu Takeda, Hideto Kato
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Abstract
There is disclosed a silphenylene skeleton-containing silicone type polymer comprising a repeating unit represented by the following general formula (1) and having a weight average molecular weight of 5,000 to 40,000. There can be a novel silphenylene skeleton-containing silicone type polymer which enables to satisfy both chemical resistance and adhesiveness to a substrate and can be used as a material for a thermosetting resin for forming coatings for protecting substrates, circuits, and interconnections; and a method for manufacturing the same.
Claims12
A silphenylene skeleton-containing silicone type polymer comprising a repeating unit represented by the following general formula (1) and having a weight average molecular weight of 5,000 to 40,000,
- wherein R1 to R4 are each a monovalent hydrocarbon group having 1 to 12 carbon atoms and may be the same or different from each other;
- k is an integer of 1 to 100;
- a and b are each 0 or a positive number, and c and d are each a positive number, and they satisfy 0<(c+d)/(a+b+c+d)≦1.0;
- X is a divalent organic group represented by the following general formula (2);
- and Y is a divalent organic group represented by the following general formula (3),
- wherein Z and W are each a divalent organic group selected from groups represented by the following formulae;
- m and p are each 0 or 1;
- n is 0, 1 or 2;
- R5 and R6 are each an alkyl or alkoxyl group having 1 to 4 carbon atoms and may be the same or different from each other;
- and R7 to R10 are each a hydrogen atom or a carboxyl-containing organic group and may be the same or different from each other, wherein at least one of R7 to R10 is a carboxyl-containing organic group.
Dependencies are inferred from the claim text.