Bayer Aktiengesellschaft

Ge Bayer Silicones Gmbh & Co. Kg

Hans Sattlegger

Hans-Heinrich Moretto

Karl Schnurrbusch

Hans Friemann

Theo Achtenberg

Heinrich Alberts

Wilhelm Weber

Karl-Heinz Sockel

Helmut Steinberger

Gunther Maass

Hans Joachim Lucking

Thomas Wurminghausen

Hans-Gerd Metzinger

Ingrid Larking

Wulf Von Bonin

Wilfried Paulus

Hermann Genth

Armand De Montigny

Harold Ebneth

Bruno Degen

Robert Friebe

Fritz Mietzsch

Karl-Heinz Rudolph

Brigitte Hamburger

Franz Saykowski

Paul Schiller

Hermann Schmidt

Axel Wilms

Manfred Boll

Horst Steinbach

Karl H Sockel

Tin catalysts, a process for their production, their use and

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

Improved polyorganosiloxane compositions which can be stored with the exclusion of moisture and harden on access to moisture are disclosed. These compositions contain, 100 parts by weight of an .alpha.,.omega.-dihdyroxypolydimethylsiloxane, 0 to 100 parts by weight of an .alpha.,.omega.-bis(trimethylsiloxy)polydimethylsiloxane plasticizer, 1 to 10 parts by weight of an oximinosilane, 5 to 250 parts by weight of a reinforcing or non-reinforcing filler or a filler mixture, 0.01 to 1 part by weight of a tin catalyst, 0.05 to 2.5 parts by weight of an aminoalkylalkoxysilane and 0.5 to 2.5 parts by weight of an accelerator chosen from alkyl or alkenyl carboxylic acids or silane derivatives of such carboxylic acids.

RTV silicone pastes with a shortened hardening time

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

The present invention relates to intumescent polysiloxane molding compositions containing expandable graphite compounds and, if appropriate, additionally nitrogen-containing phosphates.

Intumescent polysiloxane molding compositions

A silicone composition which is stable in the absence of moisture but which in the presence of water will cure at room temperature to an elastomer, comprising a polyorganosiloxane having reactive end groups, a polyester and a thickening filler.

Polyorganosiloxane compositions which harden into elastomers at room

A process for the preparation of a plastic organopolysiloxane composition which can be stored in the absence of water and which is convertable even at room temperature into rubber-elastic compositions by the action of water or atmospheric moisture, comprising mixing a hydroxyl-terminated poly-diorganopolysiloxane with about 0.1-15% by weight of the total mixture of a substance of the formula

Storable plastic organopolysiloxane molding compositions

The invention relates to special stable dispersions which crosslink at room temperature upon exposure to moisture in the atmosphere. The dispersions comprise polysiloxanes, vinyl-grafted polysiloxanes and condensation products, e.g. by weight approximately comprising

Stable, organic multi-component dispersions

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

Polysiloxane molding compositions

In a plastic organosiloxane molding composition which in the absence of water is capable of being stored and in the presence of moisture is cross-linked to a rubber, the composition comprising a hydroxypolydiorganosiloxane, a nitrogen base and heavy metal compound as cross-linking catalyst, and a cross-linking agent, the improvement which comprises employing as the cross-linking agent a compound of the formula ##STR1## or a partial hydrolysis product thereof, wherein R is an optionally substituted alkyl, alkenyl or aryl group,

Storable crosslinkable organopolysiloxane 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.

Organopolysiloxane molding compositions

A co-grafted polymer dispersion comprising blocks of an organopolysiloxane with OH functional groups, blocks of an ethylene/vinyl ester copolymer containing about 5 to 99% by weight of incorporated vinyl ester, and blocks of vinyl monomer units polymerized in the presence of mixtures of the organopolysiloxane and ethylene/vinyl ester copolymer, the organopolysiloxane and ethylene/vinyl ester copolymer blocks being linked via vinyl polymer bridges. The dispersions mixed with suitable catalysts, can cure under the influence of atmospheric moisture to elastic tack-free rubbers suitable as sealants.

Crosslinked silicone-vinyl polymer systems

A co-grafted polymer comprising units of organopolysiloxanes with OH functional groups, polyesters and vinyl monomers, polymeric units of the vinyl monomers being linked to the organopolysiloxane and polyester units, is produced by polymerizing a suitable monomer dispersion. The product is suited for replacing all or some of the organopolysiloxane component in room temperature curable compositions containing organopolysiloxanes, silane cross-linking agents and a curing catalyst.

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Odenthal, Germany

Hans Sattlegger