Process for preparing poly (paraphenylene terephthalamide)...

Details Process for preparing poly (paraphenylene terephthalamide)... Process for preparing poly (paraphenylene terephthalamide)...

D - Textiles, Paper

06

P

8/75, 8/31.07

D06P 3/24 (2006.01) D06P 3/04 (2006.01) D06P 5/22 (2006.01)

Patent

CA 2017838

Title A process for Preparing Poly(paraphenylene terephthalamide) Fibers Dyeable with Cationic Dyes Abstract of the Disclosure There is provided by this invention a process for preparing poly(paraphenylene terephthalamide) fibers dyeable with cationic dyes. The process comprises soaking poly(paraphenylene terephthalamide) fibers is sulfuric acid, washing the fibers and dipping the acid soaked fibers or never-dried PPD-T fibers in an aqueous solution of a dye promoting species. The fibers can then be dried and subsequently dyed.

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