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US 10,472,496 B2Granted
Flame-retardant adhesive composition, coverlay film using same, and flexible copper-clad laminate
AssigneeToagosei Co., Ltd.
InventorsMasaru Takashima, Yuya Okimura, Masashi Yamada
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Abstract
The flame-retardant adhesive composition contains a styrene-based elastomer containing a carboxyl group, an epoxy resin, and a phosphorus-containing oligomer including a structural unit represented by general formula (1), and the epoxy resin content is 1-20 parts by mass and the phosphorus-containing oligomer content is 10-50 parts by mass with respect to 100 parts by mass of the styrene-based elastomer containing carboxyl groups. (wherein, R1 and R2 are each independently a hydrogen atom or a methyl group, n is an integer of 1-20.)
Claims19
A flame-retardant adhesive composition comprising:
- (A) a carboxyl group-containing styrene-based elastomer,
- (B) an epoxy resin, and
- (C) a phosphorus-containing oligomer comprising a structural unit represented by the following formula (1):
- wherein R1 and R2 are each independently a hydrogen atom or a methyl group, and n is an integer of 1 to 20,
- wherein a content of the epoxy resin (B) is from 3 to 17 parts by mass, and a content of the phosphorus-containing oligomer (C) is from 10 to 50 parts by mass, based on 100 parts by mass of a content of the carboxyl group-containing styrene-based elastomer (A).
2 more elements
Dependencies are inferred from the claim text.