Abstract: 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 formulaR.sub.W RO.sub.Z Si[NR"'R'R.sub.n Si(OR).sub.3-n ].sub.4-mwhereinR is an alkyl radical having 1-4 C atoms,R' is a divalent alkylene radical having 1-6 C atoms or a unit of the formula --(CH.sub.2).sub.3 NH(CH.sub.2).sub.2 -- or --(CH.sub.2).sub.2 --NH(CH.sub.2).sub.2 NH(CH.sub.2).sub.2 --,R"' is an alkyl radical having 1-4 C atoms, R.sub.W RO.sub.2 Si or hydrogen,n is 0, 1 or 2, andm=W+Z=0, 1, 2 or 3,or a partial hydrolysis product thereof as a crosslinking agent.

Abstract: In a polysiloxane molding composition which in the presence of water crosslinks to an elastomer and which comprises(A) an .alpha.,.omega.-dihydroxyorganopolysiloxane with a viscosity of about 500 to 2,000,000 cP,(B) a crosslinking agent, and(C) a reinforcing filler,the improvement which comprises including therein in about 0.1 to 10% by weight a silicon compound containing at least 3 alkoxy groups and preferably of the formulaR.sub.n Si(Alkoxy).sub.4-nin whichR is alkyl with 1 to 10 carbon atoms,Alkoxy has 1 to 4 carbon atoms, andn is 0 or 1,whereby the elastomer ultimately produced exhibits improved direct adhesion to various substrates.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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,R.sup.3 is an alkyl radical with 1 to 4 carbon atoms or the phenyl radical, andR.sup.2 is hydrogen, an alkyl radical with 1 to 4 carbon atoms, haolgen or nitro.Advantageously the carbamate is methylbenzimidazolylmethyl-carbamate, N-(fluorodichloromethylthio)-phthalimide, is present as a synergistic fungicide and the composition further comprises a silicon-containing crosslinking agent for the siloxane, a heavy metal salt or amino accellerant for crosslinking and an .alpha.,.omega.-bis-(trimethylsiloxy)-polydimethylsiloxane. Water per se or in atmospheric air cures the composition to a rubber elastic product resistant to microbes.

Abstract: 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,R.sub.F is fluoroalkyl with 4-12 carbon atoms,a is about 5 to 70, andb is about 5 to 70.Advantageously the emulsifier is a member selected from the group consisting of a perfluoroalkyl ether of the formulaC.sub.x F.sub.2x+1 SO.sub.2 N (CH.sub.3) CO--(OCH.sub.2 --CH.sub.2).sub.n --(OCH CH.sub.3 CH.sub.2).sub.m --OC.sub.4 H.sub.9,whereinX=about 6-12,n=2-about 40 andm=2-about 40,and a perfluorinated alkane sulphonic acid salt of the formulaC.sub.x F.sub.2x+1 SO.sub.3 N(C.sub.n H.sub.2n+1).sub.4whereinx=6-12 andn=1-3.

Abstract: 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.