Flame retardant polyurethane compositions

Details Flame retardant polyurethane compositions Flame retardant polyurethane compositions

1985-11-04

1987-06-02

Kight, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

521 85, 521107, 521165, 521907, 524100, 524120, 524377, 524590, C09K 328

Patent

active

046704833

ABSTRACT:
This invention relates to flame retarding compositions comprising flame retardants selected from pentate salts and nitrogen-containing phosphates wherein one or both are encapsulated in a material to reduce contacts between the flame retardants during processing and to thus reduce or eliminate pre-reaction between the two flame retardants, which pre-reaction, normally leads to degradation of flameproofing properties of the compositions. The invention is also directed to flame retardant polyurethane compositions containing a polyurethane resin and both of the flame retardants. As between the flame retardants, amount of the phosphate is about 10-99% whereas amount of the pentate salt is about 90-1%, on weight basis. In the polyurethane compositions, combined weight of the two flame retardants is about 10-60%, based on the weight of the polyurethane resin and the two flame retardants.

REFERENCES:
patent: 4154930 (1979-05-01), Halpern
patent: 4467056 (1984-08-01), Staendeke et al.
patent: 4514328 (1985-04-01), Staendeke et al.
patent: 4542170 (1985-09-01), Hall et al.

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