Bleaching and dyeing; fluid treatment and chemical modification – Chemical modification of textiles or fibers or products thereof – Cellulose fibers
Patent
1992-03-23
1993-08-24
Lieberman, Paul
Bleaching and dyeing; fluid treatment and chemical modification
Chemical modification of textiles or fibers or products thereof
Cellulose fibers
8181, 8195, 8584, 8585, 8490, 252608, 252 86, 427342, D06M 13285, D06M 13322, C09K 2112
Patent
active
052384640
ABSTRACT:
Cellulosic fabrics are rendered flame resistant in a two-step procedure by applying first a tetrakis(hydroxymethyl) phosphonium salt/urea precondensate ammoniated to crosslink and form an insoluble phosphorus-containing polymer within the fiber structure followed by treatment with a tetrakis(hydroxymethyl) phosphonium salt. The two-step process using these chemically related phorphorus-containing flame retardants provide sufficient phosphorus in and on the cellulosic fabric to impart a predetermined minimum flame resistance. Cellulosic fabrics, primarily cotton, having flame resistant properties durable to washing yet retaining pliant, nont-stiff hand result.
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Finley Randolph L.
Johnson James R.
Burlington Industries Inc.
Lieberman Paul
Swope Bradley A.
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