Detail of "3699-67-0"

Reference

Flame-resistant polyester

Flame-resistant polyester. (Japan Ester Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59187023 A2 24 Oct 1984 Showa, 7 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08G063-22; C08K005-51; C08L067-02. APPLICATION: JP 83-60546 6 Apr 1983. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) A polyester is prepd. from terephthalic acid (I) (or other bifunctional carboxylic acid or ester-formable deriv.) and ethylene glycol (II) (or other glycol) contg. a trifunctional P compd. (P 0.2-1.5 atom%/ester) in the 1st polycondensation stage; at [g] 3 0.3, 31 bifunctional P compd. (P 0.2-1.5 atom%) having 31 free acidic OH group is used in the final polycondensation stage. Thus, a slurry of I and II (II-I molar ratio 1.5) was continuously supplied to the reactor contg. bis(b-hydroxyethyl)terephthalate and its oligomer, and allowed to react at 255° (residence time 6 h) at atm. pressure, to give an ester of 96% conversion. To 20 kg above ester, 2 ′ 10-4 mol Sb2O3, 0.5 ′ 10-4 mol Co(AcO)2, and 2.5 ′ 10-2 mol Et diethylphosphonopropionate [3699-67-0] were added, and heated 1.5 h at 280°/0.2 mmHg to give a polymer of [g] = 0.60. To the polymer was added 2.5 ′ 10-2 mol phenylphosphonic acid [1571-33-1] and the reaction mixt. was heated 1.5 h at 280°/0.2 mmHg to give a polymer [25038-59-9] with [g] = 0.68, diethylene glycol% = 2.35, and L = 74.6, a = -1.7, b = -0.8, almost colorless.

Polyester films for capacitors

Polyester films for capacitors. (Unitika Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58087811 A2 25 May 1983 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: H01G004-20; H01B003-42. APPLICATION: JP 81-187189 20 Nov 1981. DOCUMENT TYPE: Patent CA Section: 38 (Plastics Fabrication and Uses) Section cross-reference(s): 76 Thin, nonblocking films which are easily metalized and retain their elec. resistivity at high temps., useful as capacitor dielecs., are biaxially oriented films of polyesters contg. 0.01-0.5 mol % (based on total acid residues in polymer) (RO)2P(O)ZCO2R1 (R, R1 = C1-4 alkyl, Ph, benzyl; Z = C1-4 alkylene, phenylene), having crystallinity >40 (vol.)%, and contg. 0.03-3% fine (￡3-m) powd. inert inorg. solids as antiblocking agents. Thus, a biaxially oriented 4-m film of poly(ethylene terephthalate) [25038-59-9] having 45 (vol.)% crystallinity and contg. 0.3% powd. (av. 2.5-m) silica filler and 0.01 (mol)% tri-Et 3-phosphonopropionate [3699-67-0] had sliding friction coeff. 0.45 and resistivity 7.1 ′ 1016 W-cm at 23° and 5.0 ′ 1014 W-cm at 120°.