Poly(tetramethylene terephthalate)-polyether block

Details Poly(tetramethylene terephthalate)-polyether block Poly(tetramethylene terephthalate)-polyether block

1976-06-14

1978-09-26

De Benedictis, Sr., Thomas

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 457P, 260 4575C, 260 4575N, 260 4585R, 260 459R, 260860, 260873, C08K 714, C08L 6700, C08L 6706

Patent

active

041169255

ABSTRACT:
Poly(tetramethylene terephthalate)-polyether block copolymers having materially increased heat deflection temperatures and incorporating within the polymer chain in random distribution 1 percent to 7 percent by weight of the polyether, poly(tetramethylene ether glycol) or polyethylene oxide; the polyether being added to the reaction mixture in the course of the polymerization reaction.

REFERENCES:
patent: B236266 (1976-03-01), Hoeschele
patent: 3023192 (1962-02-01), Shivers
patent: 3766146 (1973-10-01), Witsiepe
patent: 3825620 (1974-07-01), Koleske et al.
patent: 3849515 (1974-11-01), Muller
patent: 3864315 (1975-02-01), Ohno et al.
patent: 3890279 (1975-06-01), Wolfe
patent: 3891604 (1975-06-01), Wolfe
patent: 3954689 (1976-05-01), Hoeschele
patent: 3959062 (1976-05-01), Hoh
patent: 3959230 (1976-05-01), Hays
Chem. Abs. 56:P13071e; 64:P15996d, and e; 72:P32486r; 83:P80018p.

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