Bayer Aktiengesellschaft

Karl Schnurrbusch

Hans Sattlegger

Theo Achtenberg

Wilfried Paulus

Hermann Genth

Bruno Degen

Hans-Horst Steinbach

Hans Friemann

Brigitte Hamburger

Paul Schiller

Hans-Gerd Metzinger

Matthias Rieder

Horst Steinbach

Otto Weiden

Hermann Schmidt

Manfred Boll

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

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.

Organopolysiloxane molding compositions

In a plastic organopolysiloxane molding composition which can be stored in the absence of water and which changes into an elastomeric molding or coating under the effect of water or air, obtained by mixing an .alpha.,.omega.-dihydroxy polydiorgano siloxane with a carboxylic acid amidoalkyl alkoxy silicon compound as a crosslinking agent and a complex titanic acid ester and optionally with a filler, pigment and/or heavy metal salt known to accelerate the crosslinking reaction, the improvement which comprises including in the mixture about 0.2 to 15% by weight, based on the mixture as a whole, of a branched and/or cyclic paraffin hydrocarbon containing from 6 to 24 carbon atoms, whereby the resulting material after hardening can form a strongly adherent bond with a lacquer applied thereto.

Coatable water-setting plastic organopolysiloxane molding compositions

In a process for the production of a plastic organopolysiloxane molding composition which can be stored under pressure and with exclusion of moisture, and which, on release of the pressure and under the action of water or atmospheric moisture, is converted into an elastomeric, fine-pored foam molding or foam coating, which comprises forming a mixture of an .alpha.,.omega.-dihydroxypolydiorganopolysiloxane with a silicon-containing crosslinking agent, introducing the mixture into the inner container of a two-container pack which consists of a rigid outer container and a flexible inner container located within the outer container and provided with a dispensing valve which extends to the exterior, and placing the mixture under pressure.

Process for the preparation of organopolysiloxane moulding compositions

An organopolysiloxane composition having a microbiocidal action comprising an .alpha.,.omega.-dihydroxypolydiorganosiloxane and a benzimidazolyl-alkyl-carbamate of the formula ##STR1## wherein R.sup.1 is an alkyl radical with 1 to 4 carbon atoms, optionally substituted by the radical --OR.sup.3,

Microbiocidal organopolysiloxane molding compositions

An aqueous alkylhydridopolysiloxane emulsion is stabilized against loss of hydrogen by addition thereto of about 0.1 to 5% by weight of an emulsifier containing perfluoroalkyl groups. The emulsion may further contain a fluoroalkyl-substituted siloxane of the formula ##STR1## wherein R each independently is alkyl with 1 to 6 carbon atoms or phenyl,

Stable alkylhydridopolysiloxane emulsions

In a storable plastic organopolysiloxane composition which can be converted into a rubbery-elastic mass under the action of water and prepared by mixing an .alpha.,.omega.-dihydroxypolydiorganosiloxane with a silicon-containing crosslinking agent, the improvement which comprises incorporating in said mixture about 1 to 20% by weight of at least one material selected from the group consisting of dioxane, acrylonitrile, acetonitrile, trichloroethylene, butanesultone, butyl acetate and carbon tetrachloride. There may be included up to about 70% by weight of .alpha.,.omega.-bis-(triorganosiloxy)-polydiorganosiloxane, up to about 5% by weight of at least one heavy metal salt or amine as a crosslinking accelerant, and about 10 to 70% by weight of at least one inert filler.

Growing community of inventors

Leverkusen, Germany

Karl Schnurrbusch