Fluorinated polyalkylene polyamides as stain repellents

Coating processes – With post-treatment of coating or coating material – Heating or drying

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26034843, 26034845, 26034847, 260455A, 2604654, 260561R, 81156, 427401, 4273934, 428260, 428272, 528494, 560169, 525419, B05D 302

Patent

active

041951050

ABSTRACT:
Fluorinated poly-(C.sub.2 to C.sub.10) alkylene polyamides (especially alpha, omega-triazaalkanes) in which the endmost nitrogen atoms are acylated by fluorinated carboxylic acid groups and an interior nitrogen atom is acylated by a dibasic acid moiety of the group consisting of (C.sub.4 to C.sub.14) alkane dioic acid moieties and the thiocarbonic acid moieties --C(.dbd.O)S-- and --CS.sub.2 --; wherein per the invention, a radical is terminally attached to the acylating dibasic acid moiety, of the group --CH.sub.2 CH.sub.2 OH, --CH.sub.2 CH(CH.sub.3)OH, --CH.sub.2 CH(OH)CH.sub.2 X (X being halogen or --CN), or ##STR1## The compounds are amphipathic, behaving like surfactants when incorporated with nylon. They are prepared by broadly known methods of producing esters and thioesters of acids. The stain resistance of fibers incorporating these compounds can be improved as to durability and at least partially restored after abrasion of the fiber, by annealing.

REFERENCES:
patent: 3555056 (1971-01-01), Crescentini et al.
patent: 3576019 (1971-04-01), Sweeney et al.
patent: 3646153 (1972-02-01), Oxenrider et al.
patent: 3754026 (1973-08-01), Beyleveld et al.
patent: 3955027 (1976-05-01), Vaughn

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