Reference

Self-extinguishing silicone rubber compositions

Self-extinguishing silicone rubber compositions. Harada, Naohiko; Aoki, Hisashi (Shin-Etsu Chemical Industry Co., Ltd., Japan). Japan. Kokai JP 52037965 24 Mar 1977 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08L083-04. APPLICATION: JP 75-113236 19 Sep 1975. DOCUMENT TYPE: Patent CA Section: 38 (Elastomers, Including Natural Rubber) Compns. of OH-terminated dimethylsiloxane 100, silanes having acryloxy, amino, or aminoxy groups 1-20, and Zn carbonate powder 5-100 parts contg. Pt or its compds., and metal carboxylate are vulcanized at room temp. to give self-extinguishing rubbers. Thus, OH-terminated dimethylsiloxane 100, MeSi(ONCMeEt)3 [22984-54-9] 8, silica powder 100, zinc carbonate powder 40, H2PtCl6.6H2O 0.004, and dibutyltin dilaurate 0.1 part were rolled into a 2-mm sheet, which was left 7 days to give a vulcanized sheet having self-extinguishing time 3 s.

Moisture-curable rubber stable in the absence of moisture

Moisture-curable rubber stable in the absence of moisture.Some chemicals with cas registry numbers like 682-01-9 and 78-10-4 are also used. Schiller, August; Dorsch, Norman; Bosch, Erhard; Sommer, Oswin (Wacker-Chemie G.m.b.H. , Fed. Rep. Ger.). Ger. Offen. DE 3212008 A1 6 Oct 1983, 32 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C08L083-04; C08K005-57. APPLICATION: DE 82-3212008 31 Mar 1982. DOCUMENT TYPE: Patent CA Section: 39 (Synthetic Elastomers and Natural Rubber) The title compns. contain siloxanes terminated with functional groups, silanes having 33 Si-N bonds or Si-O bonded oxime groups, and hydrolyzable silanes with 32 Si-O-C bonds or their oligomers with dihydrocarbyltin diacylates. Thus, 12.6 mol% (MeO)3Si(CH2)3NHCH2CH2NH2 was condensed with OH-terminated di-Me siloxane (viscosity 80 mPa-s at 25°). A mixt. of this compn. 1, OH-terminated di-Me siloxane with viscosity 300 and 20 Pa-s 40 and 20, resp., Me-terminated di-Me siloxane (viscosity 100 mPa-s) 40, Bu3C6H2(OCH2CH2)13OH 2, MeSi(ON:C(Me)Et)3 [22984-54-9] 10, CaCO3 80, fume silica 10, and 4:1 (PrO)4Si-Bu2Sn(OAc)2 condensate 2 parts was flexible and homogeneous at 5 and 70°, stable in the absence of H2O for 33 mo, and cured in the presence of atm. moisture to a rubber within 5 h. .