Reference

Asphalt emulsions contg

Asphalt emulsions contg. crosslinkable polymers. (Badische Petrochemical Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58127760 A2 29 Jul 1983 Showa, 11 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08L095-00; C08K005-24; C08L057-10. ICA: C09D003-24. APPLICATION: JP 82-10388 26 Jan 1982. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Section cross-reference(s): 51 Emulsions giving coatings with heat and creep resistance and low-temp. flexibility contain carbonyl group-contg. copolymer with glass temp. ￡30°, a compd. contg. 32 hydrazine groups (0.02-1 mol N2H4/carbonyl group), and 2-560 phr asphalt. Thus, a 48% polymer [86002-37-1] emulsion (glass temp. -17°) was prepd. from styrene 240, 2-ethylhexyl acrylate 215, acrylic acid 10, acrolein 25, and acrylamide 10 parts neutralized with NH3. 81723-59-3 and 9003-05-8 are also in the experiment. A mixt. (as solids) of this emulsion and an emulsion of asphalt (softening point -75°) 62, xylene 15, nonionic surfactant 2, and water 21% contg. 0.5 equiv. adipic acid dihydrazide [1071-93-8]/carbonyl group was cast on glass and dried at room temp. for 7 days and at 40° for 2 days to give a 1.5-mm film with tensile strength 5.6 kg/cm2, elongation 650% (after 1 day at 20°) or 240% (after 1 h at 5°), creep 5.5% (after 7 h at 80°), residual strain 50% (after 2:1 stretching at 20° and 65% relative humidity for 4 days) and good roller and brush coatability, compared with 2.0 kg/cm2, 190%, too brittle to measure, breakage after 15 min, and unmeasurable, resp., without copolymer or hydrazide. .

Heat-curable epoxy resin mixtures

Heat-curable epoxy resin mixtures. Andrews, Christopher Michael (Ciba-Geigy A.-G. , Switz.). Eur. Pat. Appl. EP 108712 A1 16 May 1984, 22 pp. DESIGNATED STATES: R: AT, BE, CH, DE, FR, GB, IT, LI, NL, SE. (German). (European Patent Organization). CODEN: EPXXDW. CLASS: IC: C08G059-40; C08K005-21. APPLICATION: EP 83-810458 6 Oct 1983.Several substances like 64497-41-2 may be metioned in this study. PRIORITY: GB 82-29073 12 Oct 1982; GB 82-29074 12 Oct 1982. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) Section cross-reference(s): 25 Epoxy resins were hardened with hydroxyphenylurea derivs. (I; R1 = NH2, NO2, Cl, Br, or C1-10 alkyl; R2 = 3- or 4-OH; p = 0-2) optionally in the presence of dicyandiamide [461-58-5], or adipic acid dihydrazide [1071-93-8]. Thus, 10 g m-aminophenol [591-27-5] and 7.42 g N,N-dimethylcarbamoyl chloride [79-44-7] were kept 4 h at 30° in 65 mL THF to give I (R2 = 3-OH, p = 0) (II) [4849-46-1]. A mixt. contg. bisphenol A-epichlorohydrin copolymer [25068-38-6] (epoxy content 5.16 equiv/kg and viscosity 24.5 Ps s at 21°) 100, II 13, and asbestos thixotropic agent 5 parts gelled in 22.5 min at 120° and 30 days at 40°. .