Silanes and compositions prepared therefrom

Details Silanes and compositions prepared therefrom Silanes and compositions prepared therefrom

C - Chemistry, Metallurgy

08

L

400/108, 402/14,

C08L 83/04 (2006.01)

Patent

CA 1246781

SILANES AND COMPOSITIONS PREPARED THEREFROM Abstract of the Disclosure This invention relates to silanes of the general formula RnSi(OCR?COZR)4-n where R represents the same or different monovalent hydrocarbon radicals or substituted monovalent hydrocarbon radicals, R1 is hydrogen or the same as R, Z is oxygen or the group Image , where R1 is the same as above, n is 0 or 1 and oligomers thereof. These silanes are prepared by reacting silanes of the general formula RnSiX4-n where R and n are the same as above and X represents the same or different hydrolyzable atoms or condensable groups other than RCOCR?CO groups, with alpha-hydroxycarboxylic acid esters or amides. The silanes, which have at least three condensable groups per molecule, may be mixed with a diorganopolysiloxane containing terminal condensable groups and at least one addi- tional substance to prepare compositions which are storage- stable under anhydrous conditions, but crosslink when exposed to moisture at room temperature to form elastomers.

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