| 摘要 |
Provided is a flame retardant system for nylon fabric comprising: (a) an organophosphorus oligomer having two terminal hydroxy groups; (b) a bonding system; and (c) one or more catalysts. The organophosphorous oligomer has the formula: where R3 is independently selected from the group consisting of: -O- and where m is an integer from 1 to 6; n is an integer from 1 to 10; R1 is H or a hydroxyalkyl group with from 1 to 6 carbon atoms; and R2 is independently selected from the group consisting of: alkyl, alkoxy and hydroxyalkoxy with from 1 to 6 carbon atoms. The bonding system is selected from the group consisting of: (a) a condensation product of melamine and formaldehyde having at least 2 hemiacetal groups; (b) dimethyloldihydroxyethyleneurea (DMDHEU); (c) a mixture of DMDHEU and condensation product of melamine and formaldehyde with 2-6 hemiacetal groups from formaldehyde in its molecule; and (d) a polycarboxylic acid with at least three carboxyl groups in adjacent carbons of the back bone. Nylon fabrics treated with the provided flame retarding system are durable to home laundering.
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