Segmented thermoplastic copolyester elastomers

Details Segmented thermoplastic copolyester elastomers Segmented thermoplastic copolyester elastomers

1973-12-10

1976-05-04

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75R, 260860, C08L 9100

Patent

active

039546896

ABSTRACT:
Segmented thermoplastic copolyester elastomers containing recurring polymeric long chain ester units derived from dimer acid and low molecular weight glycols and short chain ester units derived from dicarboxylic acids and low molecular weight glycols. At least 70% of the dicarboxylic acid used is terephthalic acid and at least 70% of the low molecular weight glycol is 1,4-butanediol. The short chain ester units constitute about 25-95% by weight of the polymer. Such copolyesters rapidly harden from the molten state and have outstanding resistance toward heat aging and photodegradation.

REFERENCES:
patent: 3235520 (1966-02-01), Crowell
patent: 3383343 (1968-05-01), Mohajer, et al.
patent: 3390108 (1968-06-01), Keck, et al.
patent: 3668277 (1972-06-01), Riemhofer
patent: 3682863 (1972-08-01), McHale
patent: 3763109 (1973-10-01), Witsiepe
patent: 3784520 (1974-01-01), Hoeschele
patent: 3795644 (1974-03-01), Jackson et al.

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