Process for the preparation of poly(diorganosiloxanes) with...

Details Process for the preparation of poly(diorganosiloxanes) with... Process for the preparation of poly(diorganosiloxanes) with...

C - Chemistry, Metallurgy

07

F

402/14, 402/17,

C07F 7/18 (2006.01) C08G 77/08 (2006.01) C08G 77/18 (2006.01) C08L 83/06 (2006.01)

Patent

CA 1305969

Process for the preparation of poly(diorganosiloxanes) with alkoxy end groups ABSTRACT OF THE DISCLOSURE A process for the preparation of triorganyloxysilyl- or diorganyloxyorganosilyl-terminated poly(diorganosilox- anes) or formulations containing such siloxanes comprising reacting .alpha.,.omega.-dihydroxypoly(diorganosiloxanes) with tetraorganyloxysilanes or triorganyloxyorganosilanes in the presence of an ammonium carbamate catalyst of the formula I Image (I) wherein, R represents a hydrocarbon radical with 1 - 20 C atoms or an H atom, and where identical or different R radicals are in the molecule. The products produced by this process can be employed in the preparation of one-component silicone paste which harden into elastomers in the presence of moisture. Le A 23 856

512578

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