Detail of "18653-98-0"

Reference

Hardenable epoxy resin mixture

Hardenable epoxy resin mixture. Zondler, Helmut; Moser, Roland (Ciba-Geigy A.-G., Switz.). Ger. 94-93-9 are also occured in this study. Offen. DE 2754535 15 Jun 1978, 59 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C08L063-00. PRIORITY: CH 76-15574 10 Dec 1976. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Section cross-reference(s): 25 Epoxy resins contg. bis(2-hydroxybenzyl) diamines or bis[(2-hydroxynaphthyl)methyl] diamines form B-stage resins in 1-14 days at room temp. or 1 h at 60° which remain unchanged in their reactivity for some time. Thus, the azomethine [94-93-9] from 2 mol o-HOC6H4CHO and 1 mol H2NCH2CH2NH2 was catalytically hydrogenated at 25° in HOAc and the N,H'-bis(2-hydroxybenzyl)ethylenediamine diacetate (salt) [67359-99-3] was neutralized with NH4OH to give N,N'-bis(2-hydroxybenzyl)ethylenediamine (I) [18653-98-0]. Three-mm plates cast from a mixt. of 100 parts bisphenol A epoxy resin [25068-38-6] and 36.7 parts I and cured 4 h at 100° and 8 h at 140° had impact bending strength 25 cm-kg/cm2, bending strength 12.8 kg/mm2, water absorption after 4 days immersion at room temp. and 1 h at 100° 0.16 and 0.20%, resp., dielec. const. at 25° 4.0, and sp. resistance at 25° 4 ′106 W-cm. A B-stage compn. obtained by heating the polymer-I mixt. at 110° and cooling to room temp. was unreactive at room temp. but gave a cured product with tensile shearing strength 13.8 N/mm2 after heating 8 h at 140°. .Some commonly used reagents like 94-93-9 is used in this experiment..

Tetradentate (N2O2) chelate complexes of the group 13 elements having a ligand-metal stoichiometry of 1:2

Tetradentate (N2O2) chelate complexes of the group 13 elements having a ligand-metal stoichiometry of 1:2. Atwood, David A.; Jegier, Jolin A.; Remington, Michael P.; Rutherford, Drew (Center Main Group Chem., North Dakota State Univ., Fargo, ND 58105, USA). Australian Journal of Chemistry, 49(12), 1333-1338 (English) 1996 Commonwealth Scientific and Industrial Research Organization. CODEN: AJCHAS. ISSN: 0004-9425. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) Section cross-reference(s): 25, 75 Acen and Salean complexes of the Group 13 elements in a ligand-to-metal stoichiometry of 1:2 were prepd. These are unconventional by comparison to previously reported examples (with these ligands) which are predominantly of a 1:1 and 1:3 stoichiometry. The boron Acen complex, Acen(BPh2)2 (1) (AcenH2 = N,N'-bis(2-hydroxy(methyl)benzylidene)ethylenediamine ('common' name)) was isolated as a minor side-product in the synthesis of [AcenAl(MeOH)2]BPh4. In a different type of reaction the monomeric SaleanHAl(Al(NMe2)3) (2) (SaleanH4 = N,N'-bis(2-hydroxybenzyl)ethylenediamine ('common' name)) was isolated. Crystal data for (1): triclinic, space group P1, a 9.In this article, certain chemicals are used. Some of their cas registry numbers are 18653-98-0 and 143-66-8 701(3), b 11.116(1), c 11.393(2) ?, a 62.84(1), b 78.99(1), g 79.94(1)°, V 1067.6(4), Z = 2, with 1032 reflections with F > 6.0s(F), R = 0.0725. Crystal data for (2): orthorhombic, P212121, a 12.432(3), b 12.574(2), c 20.024(4) ?, V 3130.3(11), Z = 4, with 855 reflections with F > 5.0s(F), R = 0.1044. .