Polyester block copolymer and elastic yarn composed thereof

Details Polyester block copolymer and elastic yarn composed thereof Polyester block copolymer and elastic yarn composed thereof

1993-09-28

1995-01-24

Acquah, Samuel A.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428224, 525 89, 525 94, 528272, 528287, 528295, 528302, 528308, 5283086, D03D 1508, C08G 63688

Patent

active

053841840

ABSTRACT:
A polyester block copolymer having an inherent viscosity of at least 0.6, which comprises (A) 30 to 90% by weight of polyester segments comprising a benzenedicarboxylic acid as the main acid component and a diol having 5 to 12 carbon atoms between the hydroxyl groups as the main glycol component and (B) 70 to 10% by weight of polyester segments comprising an aromatic dicarboxylic acid as the main acid component and ethylene glycol, trimethylene glycol, tetramethylene glycol or 1,4-cyclohexane dimethanol as the main glycol component, wherein (i) when a polyester having an inherent viscosity of at least 0.6 is formed by polycondensation of the components constituting the polyester segments (A), the melting point of the obtained polyester is lower than 50.degree. C. or the obtained polyester is amorphous, and (ii) when a polyester having an inherent viscosity of at least 0.6 is formed by polycondensation of the components constituting the polyester segments (B), the melting point of the polyester is higher than 180.degree. C. This polyester block copolymer provides an elastic yarn having a high elastic recovery and a high heat resistance.

REFERENCES:
patent: Re32741 (1988-08-01), Miyoshi et al.
patent: 2691006 (1954-10-01), Flory
patent: 3037960 (1962-06-01), Frager
patent: 3446778 (1969-05-01), Naller et al.
patent: 3732183 (1973-05-01), Popp et al.
patent: 4006123 (1977-02-01), Samuelson et al.
patent: 4031165 (1977-06-01), Saiki et al.
patent: 4070417 (1978-01-01), Isaka et al.
patent: 4377682 (1983-03-01), Ohguchi et al.
patent: 4851504 (1989-07-01), Suzuki et al.
Patent Abstracts of Japan, vol. 7, No. 235 (C-191) (1380) 19 Oct. 1983 & JP-A-58 126 314 (Teijin KK) 27 Jul. 1983.

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