Polyurethane flame retardant

Details Polyurethane flame retardant Polyurethane flame retardant

1987-04-01

1988-05-24

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521114, 524710, 524712, 524758, C08G 1830

Patent

active

047466820

ABSTRACT:
A liquid composition is provided suitable for use as a flame retardant additive for polyurethane foams. The composition overcomes the problems of high viscosity and precipitates forming in formulations of phosphate esters and polybromodiphenyl oxides and avoids scorch and smoldering while preparing polyurethane foams meeting the California 117 standard. In addition, the composition provides an unexpected advantage of improved efficacy and heat stability. The process for preparing the flame retarded polyurethane foam and the foam itself are also claimed.

REFERENCES:
patent: 4433071 (1984-02-01), Fesman
patent: 4565833 (1986-01-01), Buszard et al.
Rose et al., "A Novel Flame Retardant for Flexible Polyurethane with Improved Scorch and Smolder Resistance", J. Fire Retardant Chemistry, 9, pp. 155-158 (8/82).
Kirk-Othmer, Encyclopedia of Chemical Technology, 3rd Ed., vol. 10, John Wiley & Sons, N.Y. (1980) pp. 384-387; 400-409.
State of California, Technical Bullettin 117, Jan. 1980.
Fidelle, T. P., "Flame Retardants", Modern Plastics Encyclopedia 1985-1986, pp. 142 and 145 (1986).
FR Additive Cuts Urethane Foam Rejects, Plastics World, Sep. 1986, p. 48.

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