Reference

Antistatic polyester fibers

Antistatic polyester fibers. (Japan Ester Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 60071714 A2 23 Apr 1985 Showa, 8 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: D01F006-92. ICS: D01F001-09. ICA: D01F006-66. APPLICATION: JP 83-178771 27 Sep 1983. DOCUMENT TYPE: Patent CA Section: 40 (Textiles) Antistatic polyester fibers contain 0.1-1.0% polyalkylene glycol and 8 ′ 10-4-40 ′ 10-4 mol/mol acid component Mg, Mn, Zn, and(or) Ca as C1-5 carboxylic acid salt. Title fibers may be prepd. from a polyester contg. the two components as core and a polyester without the two components as sheath. Thus, bis(b-hydroxyethyl) terephthalate and its oligomers were treated with a slurry of terephthalic acid and ethylene glycol, mixed with ethylene glycol soln. of magnesium acetate [142-72-3] 20 ′ 10-4, LiOAc 5 ′ 10-4, and Et3PO4 5 ′ 10-4 mol/mol acid component and 0.8% (on polyester wt.) polyethylene glycol [25322-68-3], and poly(ethylene terephthalate) then polycondensed to give (I). Fibers prepd. from I compn. showed vol. resistivity 1.8 ′ 108 W.cm, which showed no decline even after 20 washings.

Polyester containing internal granules

Polyester containing internal granules. (Toyobo Co., Ltd.; Nihon Magfan K. K., Japan). Jpn. Kokai Tokkyo Koho JP 60088029 A2 17 May 1985 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: C08G063-22. ICA: C08L067-02; C08L069-00. APPLICATION: JP 83-196605 19 Oct 1983. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) Org. derivs. of alkali metals, alk. earth metals, Mn, Zn, Zr, and P are sprinkled on reaction mixts. for polyester manuf., and the product is used to prep. moldings having smooth surface and low content of fish eyes. Thus, adding magnesium acetate [142-72-3] 100, Na acetate [127-09-3] 100, tri-Me phosphate (I) [512-56-1] 9, and di-Me phenylphosphonate (II) [2240-41-7] 18 ppm through porous rings to the reaction mixt. of ethylene glycol (III) and terephthalic acid (IV), sep. adding 39 ppm I and 78 ppm II similarily to another III-IV reaction mixt., polymg., and combining the product mixts. gave polymer [25038-59-9], which provided a film having 8 fish eyes/100 cm2. When the compds. were added through a single pipe, the polymer gave a film having 100 fisheyes/100 cm2.