Plastic and nonmetallic article shaping or treating: processes – With incorporating dye susceptible material or dyeing workpiece
Patent
1990-07-27
1992-07-14
Lorin, Hubert C.
Plastic and nonmetallic article shaping or treating: processes
With incorporating dye susceptible material or dyeing workpiece
264103, 2642106, 2642108, 264211, 26421115, 8497, 81492, 8920, 57350, 57908, D01F 800, D02J 102, D06P 100
Patent
active
051300699
ABSTRACT:
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.times. (preferably at an elevated temperature) and bulked using a jet of heated turbulent fluid. The thusly bulked filaments are then dyed.
REFERENCES:
patent: 3186155 (1965-06-01), Breen et al.
patent: 3328484 (1967-06-01), Alliot-Lugaz et al.
patent: 3433853 (1969-03-01), Earle et al.
patent: 3465060 (1969-09-01), Oldham
patent: 3686848 (1972-08-01), Miller et al.
World Patents Index, Week 7541, Oct. 2, 1975, Derwent Publications Ltd.
Tietz Raymond F.
Tung Wae-Hai
E. I. Du Pont de Nemours and Company
Lorin Hubert C.
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