Detail of "25718-70-1"

Reference

Polyoxyphenylene-polyamide blends

Polyoxyphenylene-polyamide blends. Sugio, Akitoshi; Okabe, Masao; Amagai, Akikazu (Mitsubishi Gas Chemical Co., Inc. , Japan). Eur. Pat. Appl. EP 131445 A2 16 Jan 1985, 24 pp. DESIGNATED STATES: R: DE, FR, GB, NL. (English). (European Patent Organization). CODEN: EPXXDW. CLASS: ICM: C08L071-04. ICS: C08L077-10. APPLICATION: EP 84-304621 5 Jul 1984. PRIORITY: JP 83-122594 6 Jul 1983. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) Blends with good mech. properties, moldability, solvent and heat resistance, and dielec. properties contain polyoxyphenylenes and arom. polyamides with m.p. ￡330°. Thus, a stabilized blend of 2,6-dimethylphenol-2,3,6-trimethylphenol copolymer (I) [58295-79-7] [intrinsic viscosity (25°, CHCl3) 0.55 dL/g) and adipic acid-m-xylylenediamine copolymer [25718-70-1] (m.p. 230°) gave injection moldings which did not change appearance during 6 h in MEK. Tensile strength was 620 kg/cm2 and melt index 0.009 mL/s, compared to 450 and 0.011, resp., for a nylon 6-I blend.

Antiblocking polyamide films having good oxygen-permeation resistance and transparency

Antiblocking polyamide films having good oxygen-permeation resistance and transparency. Inoue, Shuji; Ieki, Hiroshi (Toyobo Co., Ltd., Japan). Japan. JP 52041295 B4 18 Oct 1977 Showa, 4 pp. (Japanese). (Japan). CODEN: JAXXAD. CLASS: IC: C08L077-10. APPLICATION: JP 70-127135 28 Dec 1970. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Polyamides derived from xylylenediamine chiefly contg. m-form and <30% p-form and 370 mol% (based on acid components) aliph. dicarboxylic acid and contg. 0.01-0.2 wt.% of >10 m-diam. silica powder have low coeff. of friction, low O permeability, and good transparency. Thus, adipic acid-m-xylylenediamine copolymer [25718-70-1] contg. 0.05% of 3-m-diam. colloidal silica was extruded into a 160-m film which was stretched 370% in the machine direction at 90°, stretched 380% across the machine direction at 95°, and heat set 20 s at 200° without relaxation to give a film having O permeability 5 ′ 10-14 cm3-cm/cm3-s-10 mm, coeff. of dynamic friction 0.71, and haze 0.36%, compared with 90 ′ 10-14, 1.1, and 0.52, resp., for a similarly treated nylon 6-based film.