Detail of "16881-77-9"

Reference

Dialkoxysilylenol ether

Dialkoxysilylenol ether. Hallgren, John Edward (General Electric Co., USA). Ger. Offen. DE 3240971 A1 10 May 1984, 12 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C07F007-18; C07F007-04. APPLICATION: DE 82-3240971 5 Nov 1982. DOCUMENT TYPE: Patent CA Section: 39 (Synthetic Elastomers and Natural Rubber) Section cross-reference(s): 29 Alkoxysilylenol ethers (I, R = C1-8 alkyl; R1 = C1-13 hydrocarbyl, optionally substituted; R2 = H, R; m = 1, 2; n = 0, 1; m + n = 1, 2) are prepd. from alkoxysilanes and ketones in the presence of transition metal catalysts, and are useful for end-capping silanol-terminated siloxanes for room-temp.-vulcanizable (RTV) silicone rubber. Thus, 3.18 parts (MeO)2MeSiH [16881-77-9] and 2.9 parts acetone [67-64-1] were heated with 58 parts CH2Cl2 and 1. There are some commonly used reagents like 18173-87-0 in this article.4 parts 10% Co2(CO)8 in o-ClC6H4Cl for 9 h to give 83% (MeO)2MeSiOC(Me):CH2 (II) [86093-93-8]. II (4 parts) was mixed with 85 parts silanol-terminated poly(dimethylsiloxane) (viscosity 2500 cP, OH content 0.9%) and 17 parts fuming SiO2 filler treated with octamethylcyclotetrasiloxane. Then, 0.4 part trimethoxysilylpropyltetramethylguanidine in 0.23 part (Bu)2Sn(OAc)2 was added, and the RTV compn. was shelf-aged for ￡2 days at 100°. The tack-free time after 2 days was 65 min at room temp. and 90 min at 100°. .

Curable resin compositions

Curable resin compositions. (Kanegafuchi Chemical Industry Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59074149 A2 26 Apr 1984 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08L033-08; C08L071-02. ICA: C08G077-46; C09J003-14. APPLICATION: JP 82-185277 20 Oct 1982. DOCUMENT TYPE: Patent CA Section: 38 (Plastics Fabrication and Uses) Compns. contg. polyethers having reactive silane groups and acrylic polymers comprising mainly C2-14 alkyl acrylate units cure to form pressure-sensitive adhesives. Thus, 800 g poly(propylene oxide) [I; mol. wt. (M) 8000, contg. 97% allyl ether end groups] and 15 g methyldimethoxysilane [16881-77-9] were combined in the presence of H2PtCl6 to obtain Me(MeO)2SiCH2CH2O-terminated poly(propylene oxide) (II) [75009-88-0]. Similarly, 900 g mixt., of I and I triol (M 9000, contg. 96% allyl ether end groups) and 60 g HSiMe2OSiMe2OSiMe(OMe)2 were combined to obtain Me(MeO)2SiOSiMe2OSiMe2CH2CH2CH2O-terminated poly(propylene oxide) (III). Then, Bu acrylate in toluene was treated in the presence of Bz2O2 to obtain a polymer [9003-49-0] soln., which was mixed with II, III and dibutyltin maleate to prep. an adhesive soln., which when applied to a 25-m transparent polyester film and heated to dry and cure it formed an adhesive layer 40 m thick.