Reference

Use of heteroorganic compounds for waterproofing of natural leather

Use of heteroorganic compounds for waterproofing of natural leather. Zurabyan, K. M.; Sidorov, V. I.; Filimonova, M. I.; Kobyakov, V. A.; Khananashvili, L. M.; Obolashvili, E. G.; Mikhailov, M. B.; Pichkhadze, Sh. V. (VZITLP, USSR). Kozh.-Obuvn. Prom-st., (12), 38-9 (Russian) 1983.There are some commonly used reagents with their cas registry numbers 15879-01-3 and 5593-70-4 in this article. CODEN: KOOPAJ. ISSN: 0023-4354. DOCUMENT TYPE: Journal CA Section: 45 (Industrial Organic Chemicals, Leather, Fats, and Waxes) Replacement of Ti(OBu)4 [5593-70-4] by other Ti-based crosslinking agents decreased the permeability of siloxane-waterproofed suede split leather to water as measured after 30 days of wet-dry cycling, although Ti(OEt)4 [3087-36-3] provided higher permeability after 3-10 days of cycling. Use of ethoxy siloxanes or their distn. residues in place of Ti(OBu)4 in di-Me and/or Et hydrogen siloxane compns. gave unsatisfactory results, esp. after 3-day cycling. .

Storage-stable organosilicon compositions, which rapidly harden in the presence of water to form self-adhesive elastomers

Storage-stable organosilicon compositions, which rapidly harden in the presence of water to form self-adhesive elastomers. Favre, Georges; Gibard, Andre; Letoffe, Michel (Rhone-Poulenc Industries S. A., Fr.). Ger. Offen. DE 2713110 6 Oct 1977, 42 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C08L083-04. PRIORITY: FR 76-8528 24 Mar 1976. DOCUMENT TYPE: Patent CA Section: 38 (Elastomers, Including Natural Rubber) The title compns. contain OH-terminated siloxanes (viscosity .gtoreq.600 cP at 25.degree.) 100, siloxanes 8.1-60, alkoxysilanes 2-25, and Ti chelates 0.5-18 parts. Thus, a mixt. of OH-terminated dimethyl siloxane (viscosity 60,000 cP at 25.degree.) 100, 60% PhMe soln. of methyl siloxane (OH content 2.1%) 50, OH-terminated 0.7:1 methylphenyl siloxane (viscosity 3000 cP at 25.degree.) 8, calcined SiO2 12, (EtO)4Si [78-10-4] 10, and (EtO)4Ti [3087-36-3] 1.1 part when exposed to air at 25.degree. and 50% relative humidity has tack-free time 1 h and demolding time 10 h.