Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1973-08-14
1976-02-24
Cannon, J. C.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
264DIG26, D02G 304
Patent
active
039405435
ABSTRACT:
A novel unitary spun polyester composite filament is provided. The composite filament consists essentially of (a) a block copolymer, as the first component, having a melting point of not lower than 170.degree.C and consisting essentially of 35-80 wt. % of a polyester, as the hard segment, predominantly containing a tetramethylene terephthalate unit and 20-65 wt. % of a long-chain glycol having a molecular weight of 500 to 5,000 as the soft segment, and (b) a polyester, as the second component, predominantly containing a tetramethylene terephthalate unit. The composite filament produces crimps superior particularly in percent of crimp and percent of crimp retentivity when drawn and relaxed.
REFERENCES:
patent: 3589956 (1971-06-01), Kranz et al.
patent: 3616183 (1971-10-01), Brayford et al.
Coleman, Journal of Polymer Science, 14, 15-28 (1954).
Chimura Kazuya
Kaneko Takashi
Kawashima Masao
Nakazono Ryuichi
Takashima Shunichi
Cannon J. C.
Mitsubishi Rayon Co. Ltd.
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