Polyethylene-1,2-diphenoxyethane-4,4'-dicarboxylate uniaxially s

Details Polyethylene-1,2-diphenoxyethane-4,4'-dicarboxylate uniaxially s Polyethylene-1,2-diphenoxyethane-4,4'-dicarboxylate uniaxially s

1974-03-05

1976-06-08

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

264289, C08G 6318, C08G 6370

Patent

active

039621839

ABSTRACT:
Films having good dimensional stability and practically no tendency of fibrillation and also other superior mechanical properties can be obtained easily and at a high production speed by stretching a layer of a substantially amorphous polymer consisting mainly of polyethylene-1,2-diphenoxyethane-4,4'-dicarboxylate at a temperature in the range from Tg to 100.degree.C (wherein Tg is a glass transition point) in the longitudinal direction to 1.5 to 3 times the original length and further stretching the resulting film at a high temperature of 150.degree.C or higher and a high stretching velocity 40000% per minute or higher in the longitudinal direction to give a total stretching ratio of 3.1 times or more.

REFERENCES:
patent: 3574046 (1971-04-01), Buteux
patent: 3595736 (1971-07-01), Buteux
patent: 3689623 (1972-09-01), Kobayashi et al.
patent: 3700540 (1972-10-01), Buteux
patent: 3816368 (1974-06-01), Kobayashi et al.

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