Detail of "3126-80-5"

CAS Number:
3126-80-5
Name:
1,2,4,5-Benzenetetracarboxylicacid, 1,2,4,5-tetrakis(2-ethylhexyl) ester
Molecular Structure:
Formula:
C42H70 O8
Molecular Weight:
703.0004
Synonyms:
1,2,4,5-Benzenetetracarboxylicacid, tetrakis(2-ethylhexyl) ester (7CI,8CI,9CI); ADK Cizer UL 80; AdekacizerUL 80; Octyl pyromellitate; Pairomex P 08; Pyromellitate 08;Tetra(2-ethylhexyl)pyromellitate; Tetrakis(2-ethylhexyl) pyromellitate;Tetraoctyl pyromellitate; UL 100
Density:
0.997g/cm³
Boiling Point:
686.5°Cat760mmHg
Flash Point:
269.3°C

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Some characteristics of the esterification of pyromellitic dianhydride with aliphatic alcohols: Some characteristics of the esterification of pyromellitic dianhydride with aliphatic alcohols. Churkin, Yu. V.; Grigor'eva, N. G.; Bikbaev, R. T.; Poteryakhina, O. V.; Abdyukova, E. A. (Inst. Neftekhim. Katal., AN Respub. Bashkortostan, Russia). Khimicheskaya Promyshlennost (Moscow), (7), 406-409 (Russian) 1996 Izdatel'stvo Teza. CODEN: KPRMAW. ISSN: 0023-110X. DOCUMENT TYPE: Journal CA Section: 37 (Plastics Manufacture and Processing) Stepwise esterification of pyromellitic dianhydride with the individual (butanol, hexanol, 2-ethylhexanol) and mixed (C8-10) alcs. was studied with the intention to produce effective thermally stable nonvolatile polymer plasticizers. 3126-80-5 and 29484-08-0 are cas registry numbers of chemicals which are used as reagents here. The effect of catalyst compn. on the product yield was studied for sulfuric acid, p-toluenesulfonic acid, and tetrabutoxytitanate. Temp. effect and effect of alc. access on the reaction rate were also investigated. The optimum anhydride-alc. concn. is 1:8 for acid catalysts and 1:10 for tetrabutoxytitanate. Tetra(2-ethylhexyl)pyromellitate and the mixed alc. tetraester are promising as plasticizers. .

Polyester compositions with improved flexibility and moldability: Polyester compositions with improved flexibility and moldability. Hiratsuka, Motonori; Ebie, Katsuyo; Doi, Kazutoshi (Du Pont-Toray Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 03220258 A2 27 Sep 1991 Heisei, 6 pp. (Japan). CODEN: JKXXAF. CLASS: ICM: C08L067-02. ICS: C08K005-09; C08K005-10. APPLICATION: JP 90-271547 8 Oct 1990. PRIORITY: JP 89-264530 11 Oct 1989. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) The title compns. comprise 100 parts polyesters consisting of 22-55% short-chain ester units and long-chain ester units and 1-100 parts plasticizers of trimellitic, pyromellitic, and/or pentaerythritol types. Heating di-Me terephthalate 194, poly(oxytetramethylene) glycol 265.4 tetramethylene glycol 69.6, and (BuO)4Ti 0.10 part at 210° for 2 h while distg. MeOH, adding 0. 3126-80-5 and 9078-71-1 are also in the experiment.5 part Irganox 1010, and heating at 245°, 0.2 mmHg for 2 h gave polyester pellets having short-chain ester unit 35%, m.p. 165°, and Shore D hardness 38. Extruding 100 parts the pellets and 5.3 part octyl pyromellitate (I) and injection molding gave test pieces with shore D hardness 35 and elongation 750%, vs. 36 and 680, resp., with triethylene glycol dibenzoate in place of I. .