Process for flame retarding cellulosics

Details Process for flame retarding cellulosics Process for flame retarding cellulosics

1977-11-18

1979-05-29

Smith, John D.

Coating processes

With post-treatment of coating or coating material

Chemical agent applied to treat coating

427342, 427353, 427354, 427389, 427390D, 428921, C09K 328, B05D 304

Patent

active

041567471

ABSTRACT:
An improved process for imparting durable flame retardancy to textile materials wherein said material is impregnated with a solution having a poly(hydroxyorgano) phosphonium cation content of from about 10 to about 60 percent by weight and having a pH of from about 2 to about 9, dried to a moisture content of from about 0 to about 8 percent, aerated by passing air through the dried material, cured by polymerizing the monomer on and in the cellulose material with exposure in an enclosed chamber to an atmosphere containing gaseous ammonia and thereafter contacting with water, the improvement comprising, impregnating said textile materials with a nitrogen containing material, contiguous with impregnation with the poly(hydroxyorgano) phosphonium cation containing solution, and, after contacting said material with said water, further exposing said material to an atmosphere containing gaseous ammonia.

REFERENCES:
patent: 3310419 (1967-03-01), Wagner
patent: 3607356 (1971-09-01), Beninate et al.
patent: 3784356 (1974-01-01), Wagner
patent: 3903336 (1975-09-01), Nachbur et al.
patent: 3953165 (1976-04-01), Pepperman et al.
patent: 4068026 (1978-01-01), Wagner

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