Fire-retardant polyamides from naphthalene dicarboxylic reactant

Details Fire-retardant polyamides from naphthalene dicarboxylic reactant Fire-retardant polyamides from naphthalene dicarboxylic reactant

1974-08-07

1977-08-16

Anderson, Harold D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 308R, 260 457P, 260 78A, 260 78L, C08G 6926

Patent

active

040425711

ABSTRACT:
A process for preparing a fired-retardant polyamide, which comprises polymerizing a carboxylic acid component consisting essentially of at least one naphthalene-dicarboxylic acid selected from the group consisting of naphthalene-2,7-dicarboxylic acid and naphthalene-2,6-dicarboxylic acid and/or its amide-forming derivative, and a halogen substituted-carboxylic acid and/or its amide-forming derivative, and an aliphatic diamine, the amount of said naphthalene dicarboxylic acid and/or its derivative being at least 40 mol% of the total acid component, and the amount of said halogen-substituted carboxylic acid being such that the halogen atom content of the polyamide is at least 0.13% by weight.

REFERENCES:
patent: 2296555 (1942-09-01), Hubert et al.
patent: 2621168 (1952-12-01), Ross et al.
patent: 3047542 (1962-07-01), Lang
patent: 3081281 (1963-03-01), Beghin
patent: 3194794 (1965-07-01), Caldwell et al.
patent: 3349062 (1967-10-01), Hill et al.
Chemical Abstracts, vol. 68, 1968, 22670z.

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