Flame retarded polyurethane foams with improved color characteri

Details Flame retarded polyurethane foams with improved color characteri Flame retarded polyurethane foams with improved color characteri

1977-08-22

1979-03-27

Marquis, Melvyn I.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

260 457P, 260 458N, 260 458SN, 260 459QB, 521115, 521121, 521128, 521174, 521906, C08K 518, C08K 546, C08K 552

Patent

active

041466870

ABSTRACT:
The discoloration of low density polyurethane foams produced with certain flame retardants is reduced by incoporating into the foam phenothiazine and amine antioxidants. The phenothiazine and amine antioxidants can be employed by admixing with the flame retardant from about 0.25 to about 5.0 percent of the phenothiazine-amine antioxidant combination by weight of the flame retardant.

REFERENCES:
patent: 3414618 (1968-12-01), Randell
patent: 3429837 (1969-02-01), Langrish et al.
patent: 3567664 (1971-03-01), Haring
patent: 3574149 (1971-04-01), Harrington
patent: 3637542 (1972-01-01), Doerge et al.
patent: 3637573 (1972-01-01), Mise et al.
patent: 3798184 (1974-03-01), Cuscurida et al.
patent: 4005034 (1977-01-01), Weil
patent: 4010211 (1977-03-01), Preston et al.
patent: 4021385 (1977-05-01), Austin et al.
Materials and Compounding Ingredients for Rubber and Plastics, 1965, pp. 155, 167 and 175

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