Detail of "9002-81-7"

Reference

Black thermoplastic resin compositions

Black thermoplastic resin compositions. (Otsuka Pharmaceutical Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58198544 A2 18 Nov 1983 Showa, 5 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08K007-08. APPLICATION: JP 82-83558 17 May 1982. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) The title compns. having good physicomech. properties contain 0.2-50% fibrous reduced K titanate and, optionally, carbon black, liq. binders, and other additives. Thus, a specimen injection-molded from PBT 1401 [24968-12-5] contg. 30% TISMO B.K. (fibrous reduced K titanate) was dark violet and had tensile strength 1050 kg/cm2 (580 kg/cm2 without TISMO B.K.), elongation 3.7 (8.3)%, bending strength 1700 (1160) kg/cm2, bending modulus 91,000 (29,000) kg/cm2, Izod impact strength 3.9 (3.2) kg/cm/cm, surface resistance <1010 (<1015) W-cm, and heat-distortion temp. 100° (55°), while a control contg. 9003-07-0 and 9002-81-7 are just another two chemicals used in this study. TISM-D was white. .

Ab initio studies on polymers

Ab initio studies on polymers. VII. Poly(oxymethylene). Karpfen, Alfred; Beyer, Anton (Inst. Theor. Chem. Strahlenchem., Univ. Wien, Vienna A-1090, Austria). J. Comput. Chem., 5(1), 19-23 (English) 1984. CODEN: JCCHDD. ISSN: 0192-8651. DOCUMENT TYPE: Journal CA Section: 36 (Physical Properties of Synthetic High Polymers) The structure of an isolated, infinite poly(oxymethylene) [9002-81-7] chain was studied using the ab initio crystal-orbital method with a basis set of double-zeta quality. 9002-81-7 is the cas registry number of certain chemical which is used as reagents here. Restricting the primitive unit cell of a single CH2O group, conformational potential curves were calcd. as a function of torsion angle. A single min., corresponding to an all-gauche structure, was detected. The all-trans conformation was a max. on the energy curve for simultaneous rotation around C-O bonds. Geometry optimization in the vicinity of the all-gauche conformation gave the crystal structure. The calcd. torsional angle lay between the hexagonal and orthorhombic modifications. .