Fire retardant polyamide compositions

Details Fire retardant polyamide compositions Fire retardant polyamide compositions

1984-07-24

1986-08-19

Lechert, Jr., Stephen J.

Compositions

Fire retarding

For solid synthetic polymer and reactants thereof

106 1821, 106 1824, 106 1825, 106 1832, 252601, 524101, 524606, C09D 518, C08K 534

Patent

active

046068538

ABSTRACT:
A fire retardant polyamide composition comprising at least 35% by weight of polyamide having a molecular weight of at least 3000, at least 3.5% but preferably not more than 10% by weight of the condensation product of 2 moles perchlorocyclopentadiene and 1 mole of 1,5-cyclooctadiene, at least 2%, preferably at least 4% desirably not more than 10% by weight of melamine, a salt of melamine or an organic derivative of melamine and at least 0.5%, but preferably not more than 5.0% of at least one oxide selected from iron oxide and tin oxide, wherein the weight ratio of chlorinated compound to oxide is between 1:1 and 10:1 preferably between 2:1 and 6:1 and the constituents of the composition total 100%. The composition provides improved burning performance in the UL94 test in that dripping is prevented. The composition also provides acceptable burning performance at a lower concentration of total additives than when halogenated fire retardant/synergistic oxide combinations are used.

REFERENCES:
patent: 3562208 (1971-02-01), Kotzsch et al.
patent: 3885912 (1975-05-01), Golborn et al.
patent: 3895161 (1975-07-01), Golborn et al.
patent: 3901650 (1975-08-01), Golborn et al.
patent: 3935162 (1976-01-01), Golborn et al.
patent: 3976620 (1976-08-01), Golborn et al.
patent: 4298518 (1981-11-01), Ohmura et al.
patent: 4321189 (1982-03-01), Ohshita et al.

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