Fire retardant composite products of cellulose impregnated with

Details Fire retardant composite products of cellulose impregnated with Fire retardant composite products of cellulose impregnated with

1997-04-23

1999-03-09

Nutter, Nathan M.

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

Synthetic resins

From reactant which is a cellular material derived from...

527301, 528 58, 528 59, 528 72, 528398, C08G 1800, C08H 504

Patent

active

058802436

ABSTRACT:
New and useful products are based on sheeted cellulose impregnated with a polyfunctional isocyanate and a fire retardant material. The fire retardants are chosen from organophosphorous esters compatible with the isocyanate in the proportions used. Preferred impregnating compositions use about one part of isocyanate and two parts of a halogenated diphosphate ester. Other compatible phosphorous based materials may be included for viscosity control.

REFERENCES:
patent: 5008359 (1991-04-01), Hunter
patent: 5140086 (1992-08-01), Hunter et al.
patent: 5220760 (1993-06-01), Dimakis
patent: 5280097 (1994-01-01), Hunter et al.
patent: 5292391 (1994-03-01), Wallick
patent: 5332458 (1994-07-01), Wallick
patent: 5345738 (1994-09-01), Dimakis
patent: 5391583 (1995-02-01), Blount
patent: 5580922 (1996-12-01), Park et al.

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