Stretched film structure of the poly-1,3-phenylene terephthalate

Details Stretched film structure of the poly-1,3-phenylene terephthalate Stretched film structure of the poly-1,3-phenylene terephthalate

1981-10-06

1983-06-28

Phynes, Lucille M.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528195, 528302, 428480, C08G 6302, C08G 6318

Patent

active

043906834

ABSTRACT:
A monoaxially or biaxially stretched film structure, or a heat-set structure thereof, of an unstretched film of an aromatic polyester of the poly-1,3-phenylene terephthalate type, said aromatic polyester having an intrinsic viscosity, determined in p-chlorophenol at 50.degree. C., of 0.4 to 2.0 and being composed of [A] polybasic carboxylic acid component units consisting of terephthalic acid units (a.sub.1) and units (a.sub.2) of a polybasic carboxylic acid other than terephthalic acid, the proportion of the units (a.sub.2) being up to 25 mole % based on the units (a.sub.1) and units (a.sub.2) combined, and [B] polyol component units consisting of resorcinol units (b.sub.1) and units (b.sub.2) of a polyol other than resorcinol, the proportion of the units (b.sub.2) being up to 25 mole % based on the units (b.sub.1) and (b.sub.2) combined.

REFERENCES:
patent: 3160602 (1964-12-01), Kantor et al.
patent: 3160604 (1964-12-01), Holub et al.
patent: 3778410 (1973-12-01), Kuhfuss et al.
patent: 3816368 (1974-06-01), Kobayashi et al.
patent: 3875119 (1975-04-01), Aoki et al.
patent: 4042565 (1977-08-01), Hoheisel et al.
patent: 4201856 (1980-05-01), Jackson et al.

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