Abstract: The present invention provides a process, which includes: a) suspending: at least one filler selected from the group including silicatic filler, oxidic filler, and a mixture thereof, 0.5 to 7% by weight, based on the weight of the filler, of at least one polysiloxane hydrophobicizing agent, and 0.1 to 2% by weight, based on the weight of the filler, of at least one non-ionic surfactant, in water at a temperature of 10 to 60° C., to prepare a suspension having a solids content of 0.5 to 15% by weight, based on the weight of the suspension; b) contacting a rubber latex emulsion and the suspension, to prepare a mixture; c) contacting the mixture with at least one acid to lower the pH of the mixture to 2.

Abstract: A process for the continuous preparation of filled rubber granules, composed of a mixture of one or more polymers with one or more fillers, which includes precipitating the rubber onto the surface of the filler in one or more continuous reactors.

Abstract: A process for preparing silica-filled rubber powder is provided, which includes contacting a salt-containing silica-precipitation suspension with at least one selected from the group including a rubber latex, rubber solution, and rubber emulsion, to form a mixture; and precipitating to produce a silica-filled rubber powder. A silica-filled rubber powder prepared by the process, and compositions and uses containing the same, are also provided.

Abstract: A fine-particle, free-flowing rubber powder containing silicatic fillers, one or more organosilanes having trialkoxysilyl groups, and a rubber prepared by solution polymerization is prepared by a process that starts from a two-phase system: 1) filler in water, and 2) rubber in organic solvent. A rubber/silicatic filler/silane composite is formed during transfer, under gentle conditions, of the various reactants into a single phase. The process features a high degree of freedom in selecting forms of filler and in selecting the organosilane and gives a finished rubber powder in which a silicatic filler and an organosilane have undergone complete chemical reaction.

Abstract: The present invention provides an adsorbent, that includes a pulverulent rubber, which contains at least one filler selected from the group including natural filler, synthetic filler, organic filler, inorganic filler, and mixtures thereof. Another embodiment of the invention relates to an article or apparatus selected from the group including a cushion, hose, suction boom, stationary bed column, suspension reactor, and fluidized bed reactor, that contain the above-noted adsorbent. Another embodiment of the invention provides a process, that includes adsorbing at least one organic compound with the above-noted adsorbent. The present invention is a readily usable and effective adsorbent, and has a high capacity, permits an efficient mass transport in the individual adsorbent particles, and has a resistance to fouling by adsorption of higher molecular weight substances or by swelling processes, and is resistant to being wetted by water and to coadsorption of water.

Abstract: The present invention provides a process, which includes:

Abstract: Fine-particle, filled rubber powders prepared by precipitation from aqueous mixtures of a filler suspension and a rubber-latex emulsion in the absence of water-soluble salts of metals of groups IIa, IIb, IIIa, or VIII of the Periodic Table of the Elements and in the absence of alkali metal silicate are used for vulcanizable rubber mixtures.

Abstract: A fine-particle, free-flowing rubber powder containing silicatic fillers, one or more organosilanes having trialkoxysilyl groups, and a rubber prepared by solution polymerization is prepared by a process that starts from a two-phase system: 1) filler in water, and 2) rubber in organic solvent. A rubber/silicatic filler/silane composite is formed during transfer, under gentle conditions, of the various reactants into a single phase. The process features a high degree of freedom in selecting forms of filler and in selecting the organosilane and gives a finished rubber powder in which a silicatic filler and an organosilane have undergone complete chemical reaction.

Abstract: A process for preparing silica-filled rubber powder is provided, which includes contacting a salt-containing silica-precipitation suspension with at least one selected from the group including a rubber latex, rubber solution, and rubber emulsion, to form a mixture; and precipitating to produce a silica-filled rubber powder. A silica-filled rubber powder prepared by the process, and compositions and uses containing the same, are also provided.

Abstract: Fine-particle, filled rubber powders prepared by precipitation from aqueous mixtures of a filler suspension and a rubber-latex emulsion in the absence of water-soluble salts of metals of groups IIa, IIb, IIIa, or VIII of the Periodic Table of the Elements and in the absence of alkali metal silicate are used for vulcanizable rubber mixtures.

Abstract: Precipitated silicas, characterized in that they have a CTAB surface area (in accordance with ASTM D 3765-92) of 200 to 400 m.sup.2 /g, a DBP index (in accordance with ASTM D 2414) between 230 and 380 ml/100 g as powder and 180-250 g/100 g as granulate, a silanol group density (V.sub.2 -NaOH consumption) of 20 to 30 ml and the following macropore size distribution which is typical of the surface area range involved, determined by means of Hg porosimetry (DIN 66 133) for specific pore size intervals (incremental mode of application):______________________________________ CTAB surface CTAB surface CTAB surface area range: area range: area range: 200-250 m.sup.2 /g 250-300 m.sup.2 /g 300-400 m.sup.2 /g Pore size interval ?nm! Hg consumption in ml/g of silica ______________________________________ 10-20 0.27-0.49 0.35-0.50 0.32-0.42 20-30 0.22-0.32 0.15-0.30 0.17-0.22 30-40 0.15-0.21 0.12-0.17 0.12-0.15 40-50 0.11-0.16 0.09-0.12 0.08-0.11 50-60 0.08-0.12 0.06-0.10 0.06-0.

Abstract: Precipitated silicas, characterized in that they have a CTAB surface area (in accordance with ASTM D 3765-92) of 200 to 400 m.sup.2 /g, a DBP index (in accordance with ASTM D 2414) between 230 and 380 ml/100 g as powder and 180-250 g/100 g as granulate, a silanol group density (V.sub.2 -NaOH consumption) of 20 to 30 ml and the following macropore size distribution which is typical of the surface area range involved, determined by means of Hg porosimetry (DIN 66 133) for specific pore size intervals (incremental mode of application):______________________________________ CTAB surface CTAB surface CTAB surface area range: area range: area range: 200-250 250-300 300-400 Pore size m.sup.2 /g m.sup.2 /g m.sup.2 /g interval ?nm! Hg consumption in ml/g of silica ______________________________________ 10-20 0.27-0.49 0.35-0.50 0.32-0.42 20-30 0.22-0.32 0.15-0.30 0.17-0.22 30-40 0.15-0.21 0.12-0.17 0.12-0.15 40-50 0.11-0.16 0.09-0.12 0.08-0.11 50-60 0.08-0.12 0.06-0.10 0.06-0.

Abstract: The invention relates to mixtures including resorcinol and silica which are used as adhesion promoters for improving the adhesion between textile or metal strength carriers and rubber or plastics. The mixtures in accordance with the invention exhibit a sharply limited sublimation behavior with regard to the resorcin.

Abstract: A process for the production of plastic and rubber compositions filled with carbon black in which an organosilicon compound is used and is reacted in situ with the carbon black. The organosilicon compound is selected from the following formulae:(R.sup.1.sub.n --(RO).sub.3-n Si-(Alk).sub.m --(Ar).sub.p).sub.q (B)(I)R.sup.1.sub.n --(RO).sub.3-n Si-(Alkyl) (II)orR.sup.1.sub.n --(RO).sub.3-n Si-(Alkenyl) (III)in whichB=--SCN, --SH, --Cl--NH.sub.2 (where q=1) or --S.sub.x -- (where q=2),R=a C.sub.1-4 alkyl or C.sub.1-4 alkoxy group or a phenyl group,R.sup.1 =a C.sub.1-4 alkyl group or a phenyl group,n=0, 1 or 2,Alk=a difunctional, linear or branched C.sub.1-6 hydrocarbon radical,m=0 or 1,Ar=a C.sub.6-12 preferably C.sub.6 arylene radical,p=0 or 1, with the proviso that p and n cannot both be 0,x=a number from 2 to 8,Alkyl=a monofunctional, linear or branched unsaturated C.sub.1-20 and preferably C.sub.2-8 hydrocarbon radical,Alkenyl=a monofunctional, linear or branched unsaturated C.sub.2-20 and preferably C.sub.

Abstract: The invention relates to mixtures including resorcinol and silica which are used as adhesion promoters for improving the adhesion between textile or metal strength carriers and rubber or plastics. The mixtures in accordance with the invention exhibit a sharply limited sublimation behavior with regard to the resorcin.

Abstract: Moulding materials vulcanizable by means of the action of heat which contain a thiocyanatopropyltrialkoxysilane and a method of their manufacture are disclosed.

Abstract: Moulding materials are disclosed which are vulcanizable by means of the development of heat, and are provided with aluminum- and/or magnesium hydroxide in a flame-resistant manner and contain a thiocyantopropyltrialkoxy silane.

Abstract: The invention relates to N,N'- and N,N',N'-substituted silyl ureas of the general formula ##STR1## and to their use as antidegradation agents which can not be washed out in polymers, especially rubber.