Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1978-03-22
1980-03-25
Danison, Walter G.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
264176F, 2642105, 2642893, 528502, C08G 6370, C08G 6318
Patent
active
041951611
ABSTRACT:
An improved polyester filament (i.e., a principally polyethylene terephthalate filament) suitable for use in commercial applications is provided having a unique internal structure. The filament possesses an interconnected highly oriented crystalline microstructure coextensive with its length coexisting with an interdispersed substantially disoriented non-crystalline phase. The filament microstructure imparts inter alia a propensity for the filament to undergo a low degree of shrinkage under a high degree of force at an elevated temperature as evidenced by a modulus ratio (as defined) of at least 0.1. The filament exhibits a relatively high initial modulus, coupled with a relatively high crystalline orientation function, and a relatively low amorphous orientation function.
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Besso Michael M.
Davis Herbert L.
Jaffe Michael L.
Celanese Corporation
Danison Walter G.
Genoni Kenneth A.
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