Flame retarding cellulosic materials with sodium or potassium th

Details Flame retarding cellulosic materials with sodium or potassium th Flame retarding cellulosic materials with sodium or potassium th

1980-09-12

1981-11-24

Willis, Jr., P. E.

Compositions

Electrolytes for electrical devices

106 1822, 106 1823, 252607, 428921, B27K 302, C09K 328

Patent

active

043023452

ABSTRACT:
A flame resistant cellulosic insulation material, method of treating loosll cellulosic material and compositions for imparting flame resistance and flame and smolder resistance to such materials are disclosed utilizing thiocyanate compounds interstitially distributed throughout the cellulosic insulation material as a flame retardant. Sodium and potassium thiocyanate are used in extremely small quantities in insulation materials and impart flame resistance due to the hygroscopic migration of the compounds into the insulation material. The effectiveness of such small quantities of thiocyanate make possible the addition and retention of effective amounts of powdered smolder inhibitors such as boric acid, and sulfur.

REFERENCES:
patent: 1853818 (1932-04-01), Kobbe
patent: 2713008 (1955-07-01), Schulenburg
patent: 2867549 (1959-01-01), Outterson
patent: 3027326 (1962-03-01), Moffett
patent: 4012507 (1977-03-01), Knoepfler et al.
patent: 4038451 (1977-07-01), Brown et al.
patent: 4184969 (1980-01-01), Bhat

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