Highly elastic ionic dye-dyeable polyether-ester block copolymer

Details Highly elastic ionic dye-dyeable polyether-ester block copolymer Highly elastic ionic dye-dyeable polyether-ester block copolymer

1990-09-04

1991-12-03

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528286, 528287, 528294, 528295, 528298, 528301, 528302, 528307, 528308, 5283086, 528398, 528400, 525437, 525444, 525448, 525450, 524709, 524710, C08G 63688, C08G 63692

Patent

active

050701789

ABSTRACT:
A polyether-ester block copolymer, and filaments formed therefrom, having an enhanced thermal stability of the elastic property thereof and a satisfactory dyeing property, comprises a polymerization product of (A) an acid component comprising as a major ingredient, terephthalic acid, (B) a phosphonium sulfate component comprising a compound of the formula (I): ##STR1## wherein Z.sub.1 =tri- or more valent aromatic or aliphatic group, A.sub.1 =ester-forming group, A.sub.2 =H or ester-forming group, R.sup.1, R.sup.2, R.sup.3, R.sup.4 =alkyl or aryl radical and n=a positive integer, (C) a polymeric glycol component comprising a polyoxyalkylene glycol having an MW of 400 to 6000 and (D) a monomeric glycol component comprising, as a major ingredient, 1,4-butane diol, in which the copolymer component (B) is in an amount of from 0.1 to 5 molar % based on the molar amount of the component (A) and the component (C) is in an amount of from 50 to 80% by weight based on the total weight of the copolymer, and which copolymer has a limiting viscosity number of 1.2 or more, a melting point of 160.degree. C. or more, and a 1/2 crystallization time of 10 seconds or less.

REFERENCES:
patent: 3651014 (1972-03-01), Witsiepe
patent: 3732183 (1973-05-01), Popp et al.
patent: 4006123 (1977-02-01), Samuelson et al.
patent: 4006123 (1977-02-01), Samuelson et al.
patent: 4855396 (1989-08-01), Wilson et al.

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