Bayer Aktiengesellschaft

Theo Achtenberg

Hans Sattlegger

Wilhelm Weber

Karl-Heinz Sockel

Karl Schnurrbusch

Bruno Degen

Thomas Wurminghausen

Franz Saykowski

Hans-Gerd Metzinger

Hans Stattlegger

Karl H Sockel

The present invention relates to a process for the production of diorganyloxyorganosilyl- or triorganyloxysilyl-terminated poly(di-organosiloxanes) by reaction of .alpha.,.omega.-dihydroxypoly(diorganosiloxanes) with alkoxysilanes in the presence of catalytically active strong alkali metal bases.

Process for the production of alkoxy-terminated poly-(diorganosiloxanes)

Polysiloxane compositions which harden in the presence of moisture by elimination of alcohols, which have high stability in storage while unvulcanized in the absence of moisture, which exhibit good adhesion to substrates, and which are improved by the presence of stabilizing silyl derivations of N-methyl benzamide contain:

Moisture-hardening one-component polysiloxane compositions

A method of minimizing the adherence of ice on substrates which comprises coating said substrates with a polysiloxane composition which changes into a rubbery elastic material in the presence of water or atmospheric moisture which comprises .alpha.,.omega.-dihydroxy-polydiorganosiloxane having a viscosity of about 500 to 2,000,000 centipoise at 20.degree. C. and a cross-linking agent with or without a hardening catalyst.

Use of silicone masses to prevent the formation of ice on substrates

A process for the preparation of triorganooxysilyl- or diorganooxyorganosilyl-terminated poly(diorganosiloxanes) 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 ##STR1## 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.

Process for the preparation of poly(diorganosiloxanes) with alkoxy end

In a polydiorganosilixane composition which is capable of storage in the absence of moisture and can be cured at ambient temperature under the action of water or moisture to give elastomers, the composition comprising a diorganosiloxane having reactive terminal groups, a diorganosilane having groups which are sensitive to hydrolysis, a cross-linking agent, and optionally fillers which have a thixotropic effect, condensation catalysts and/or other known auxiliaries, the improvement which comprises employing as the silane (a) a silane of the formula

RTV Silicone pastes

In a polysiloxane molding composition which in the presence of water crosslinks to an elastomer and which comprises

Polysiloxane molding compositions

The present invention relates organopolysiloxane molding compositions which are capable of storage in the absence of moisture and which crosslink to give elastomers after the admission of water or steam, and are based on .alpha.,.omega.-dihydroxyorganopolysiloxanes and substances which produce crosslinking, a short-chain siloxane of the general formula ##STR1## being added, in addition to customary additives.

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Leverkusen, Germany

Theo Achtenberg