Flame-retardant resin compositions
AssigneeUnitika Ltd.
InventorsKenichi Hazama, Isamu Hirose, Kenji Yasue, Daisuke Shinoura
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Abstract
A resin composition comprising: (a) an aromatic co-polyester comprising terephthalic acid, isophthalic acid and a halogen-free bisphenol; and (b) a halogen-containing aromatic co-polyester containing terephthalic acid, isophthalic acid and, at least in part, a bisphenol bearing a halogen substituent(s) as a comonomer. Molded articles prepared from such a resin composition possess excellent mechanical properties, electrical properties and flame-retardant capabilities.
Claims11
A flame-retardant aromatic co-polyester composition comprising (A) a halogen-free aromatic co-polyester obtained by the condensation reaction of (a) 2,2-bis(4'-hydroxyphenyl)propane and (b) a mixture of isophthalic acid and/or its functional derivatives and terephthalic acid and/or its functional derivatives, and (B) a halogen-containing aromatic co-polyester obtained by the condensation reaction of (a) 2,2-bis(4'hydroxy-3', 5'-dibromophenyl)propane and/or 2,2-bis(4'-hydroxy-3', 5'-dichlorophenyl)propane and (b) a mixture of isophthalic acid and/or its functional derivatives and terephthalic acid and/or its functional derivatives.
Dependencies are inferred from the claim text.