Dyeable hot-bulked polypropylene fibers modified with a...

Details Dyeable hot-bulked polypropylene fibers modified with a... Dyeable hot-bulked polypropylene fibers modified with a...

D - Textiles, Paper

01

F

D01F 6/46 (2006.01) D01F 6/06 (2006.01) D02G 1/16 (2006.01)

Patent

CA 2047791

Dyeable fibers are formed from polypropylene by blending a major portion of polypropylene with a minor portion of 1) a copolymer of nylon 6,6 and substantially equimolar amounts of hexamethylene diamine and an alkali metal salt of 5-sulfoisophthalic acid or 2) a basic reaction product of substantially equimolar amounts of N-(2-aminoethyl) piperazine and adipic acid, hexamethylene diamine and adipic acid and optionally .epsilon.-caprolactam. The blend is formed in an extruder and extruded into filaments which are quenched in air, stretched 2-4 x (preferably at an elevated temperature) and bulked using a jet of heated turbulent fluid. The thusly bulked filaments are then dyed.

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