Detail of "1675-54-3"

Reference

Epoxy resin molding materials

Epoxy resin molding materials. Shimizu, Masayoshi; Ikeda, Yasuhisa; Yamada, Shozo (Sumitomo Bakelite Co., Ltd., Japan). Japan. JP 53023336 B4 14 Jul 1978 Showa, 6 pp. (Japanese). (Japan). CODEN: JAXXAD. CLASS: IC: C08L063-00. APPLICATION: JP 67-6044 1 Feb 1967. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Epoxy resin compns., with good moldability and improved storage stability, were prepd. in a 2-step process by 1st mixing an epoxy compd. with a crosslinking agent and then blending the particles with an epoxy resin compn. Thus, epoxidized novolak 100, clay 150, and Zn stearate 2 parts were compounded at 70-80° and bisphenol A glycidyl ether [1675-54-3] 100, m-tolylenediamine 250, and Zn stearate 3 parts were compounded at 40-60°. The 1st particles (100 parts) were blended with 9 parts of the 2nd particles to give particles with good storage stability and moldability, whereas storage stability was poor for particles obtained on mixing 2 compns. in a 1-step process.

Epidermal carcinogenicity of bis[2,3-epoxycyclopentyl]ether, 2,2-bis(p-glycidyloxyphenyl)propane, and m-phenylenediamine in C3H and C57BL/6 inbred male and female mice

Epidermal carcinogenicity of bis[2,3-epoxycyclopentyl]ether, 2,2-bis(p-glycidyloxyphenyl)propane, and m-phenylenediamine in C3H and C57BL/6 inbred male and female mice. Holland, J. M.; Gosslee, D. G.; Gipson, L. C.; Whitaker, M. J. (Oak Ridge Natl. Lab., Oak Ridge, Tenn., USA). Report, ORNL-5375, 76 pp. Avail. NTIS From: Energy Res. Abstr. 1978, 3(14), Abstr. No. 34002 (English) 1978. DOCUMENT TYPE: Report CA Section: 4 (Toxicology) Application of bis(2,3-epoxycyclopentyl) ether (I) [2386-90-5], 2,2-bis(p-glycidyloxyphenyl)propane (II) [1675-54-3] or a 1:1 mixt. of I and II [67920-90-5] 3 times weekly for 24 mo induced malignant epidermal tumors in C3H and C57BL/6 mice. C57BL/6 mice were more sensitive to skin carcinogenesis as evidenced by a higher frequency of mice responding at the highest doses were, for C3H: compd. I, 6; II 0; I + II, 64%; and for C57BL/6: compd. I, 13; II, 20; I + II, 80%. The substantial difference in the potency of the materials applied as a 1:1 mixt. as opposed to their effects when tested individually suggested synergistic interaction. Similar tests of the skin carcinogenicity of m-phenylenediamine [108-45-2] were neg. at all doses and in both strains. An increased incidence of lung tumors relative to vehicle control was detected in C3H mice treated at the highest dose of I.