Detail of "2479-49-4"

Reference

a-Cyanoacrylate rapid-setting adhesive composition

a-Cyanoacrylate rapid-setting adhesive composition. Ikeda, Takayuki; Kouhara, Kazuo; Sasaki, Minoru (Alpha Techno Co., Japan). PCT Int. Appl. WO 8403097 A1 16 Aug 1984, 16 pp. DESIGNATED STATES: W: US; RW: DE, FR, GB. (Japanese). (World Intellectual Property Organization). CODEN: PIXXD2. CLASS: IC: C09J003-14. APPLICATION: WO 84-JP33 4 Feb 1984. PRIORITY: JP 83-21293 9 Feb 1983. DOCUMENT TYPE: Patent CA Section: 38 (Plastics Fabrication and Uses) Heat-resistant 2-cyanoacrylate adhesives contain benzophenonetetracarboxylic acid [2479-49-4] or anhydride (I) [2421-28-5]. Thus, a Me a-cyanoacrylate compn. contg. 10 ppm SO2, 300 ppm hydroquinone, and 0.5% I was coated between Fe plates and cured for 1 day at room temp. to give a joint with shear strength 225.2 kg/cm2 at room temp. and 40.3 kg/cm2 after 5 h at 150°, compared with 171.1 and 11.9, resp., without I.

Benzophenonetetracarboylic dianhydride

Benzophenonetetracarboylic dianhydride. Ando, Naoki; Fujiwara, Hideetsu; Hosoya, Kenji (Japan Synthetic Rubber Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 61161276 A2 21 Jul 1986 Showa, 5 pp. (Japan) CODEN: JKXXAF. CLASS: ICM: C07D307-89.Several substances with their cas registry numbers 2479-49-4 and 102555-77-1 may be metioned in this study. APPLICATION: JP 85-2054 11 Jan 1985. DOCUMENT TYPE: Patent CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Section cross-reference(s): 35 The title dianhydride (I), useful as an intermediate for polymers (no data), is prepd. Thus, heating 120 g II in 30% HNO3 at 135-160° and 65 kg/cm2 gave 149 g crude III, which was purified and dehydrated in a mixed solvent of 73.5% Ph2O and 28.5% biphenyl at 220° under N to give 58% I. .