Abstract: A dispersion powder of water-insoluble copolymers of ethylenically unsaturated monomers and optionally, further additives, which are redispersible in water and obtained by:a) emulsion polymerizing, at a pH of 2 to 9, a comonomer mixture of at least one comonomer selected from vinyl esters of unbranched or branched alkylcarboxylic acids having 1 to 18 carbon atoms, methacrylic acid esters of unbranched or branched alcohols having 1 to 18 carbon atoms, acrylic acid esters of unbranched or branched alcohols having 1 to 18 carbon atoms, olefins, dienes, vinylaromatics and vinyl halides, and 0.05 to 15.0% by weight, based on the total weight of the comonomer mixture, of at least one silicon compound of the formulaCH.sub.2 .dbd.CH--(CH.sub.2).sub.m --SiR(OR').sub.2,where m=0-8CH.sub.2 .dbd.CR"--CO.sub.2 --(CH.sub.2).sub.n SiR(OR').sub.2where n=1-6 ##STR1## b) spray drying aqueous dispersion, at a pH of 4 to 8 at a discharge temperature of 55 to 100.degree. C., before or after addition of any additives.

Abstract: The preparation of an aqueous dispersion can be based on at least one water-insoluble organopolymer, on at least one water-dispersible silicon compound and on at least one water-soluble or dispersible phosphorus compound.

Abstract: The invention relates to a panel-shaped, evacuated and thermally insulating molded element which contains pressed and optionally hardened, microporous insulating material, wherein the insulating material is in one or more sheathed and evacuated layers, and the molded element has a surface with a lamellar structure, the lamellae being produced by elongate incisions into the surface and having a depth of 40 to 95% of the thickness of the molded element. The invention also relates to a method of insulation for curved surfaces with thermally insulating material, wherein the molded element is made to fit with the surface with a lamellar structure snugly against the curved surface, is fixed in position, and the vacuum is destroyed in at least one layer.

Abstract: The invention relates to a composition, to a process for its preparation and to a method of coating shaped articles or elastomeric materials, where the composition can be prepared using(1) polymer components selected from the group consisting of(A1) polyorganosiloxanes comprising units (T units) of the formula (R.sub.1 Si--O.sub.3/2) and optionally, units (M units) of the formula (R.sub.3 Si--O.sub.1/2)(A2) polyorganosiloxanes comprising units (Q units) of the formula (Si--O.sub.4/2) and, optionally, units (M units) of the formula (R.sub.3 Si--O.sub.1/2)in whichR is identical or different and represents unhalogenated or halogenated hydrocarbon radicals having 1 to 18 carbon atom(s) per radical or OR.sup.1, whereR.sup.1 is identical or different and represents hydrogen or a monovalent, unsubstituted or substituted hydrocarbon radical having 1 to 8 carbon atom(s),with the proviso that there are from 0.01% to 3.0% by weight, preferably from 0.01% to 1% by weight, of Si-bonded radicals OR.sup.

Abstract: Organopolysiloxane particles consist of a single molecule, are crosslinked, and contain metal atoms in the zero valent oxidation state, the metal atoms in each case being in intermetallic interaction with at least one further metal atom in the zero valent oxidation state, have an average diameter of 5 to 200 nm and are soluble to the extent of at least 0.1% by weight in at least one organic solvent chosen from the group consisting of methylene chloride, pentane, acetone, toluene and ethanol, at least 80% of the particles having a diameter which deviates from the average diameter by not more than 30%.

Abstract: The invention describes crosslinkable compositions comprising(1) organosilicon compounds which contain radicals having aliphatic carbon-carbon multiple bonds,(2) organosilicon compounds having Si-bonded hydrogen atoms or, in place of or in addition to (1) and (2); said composition further comprising(3) organosilicon compounds which contain radicals having aliphatic carbon-carbon multiple bonds and Si-bonded hydrogen atoms,(4) catalysts which promote the addition of Si-bonded hydrogen to aliphatic multiple bonds, and ##STR1## where R.sup.1 and R.sup.2 are as defined in claim 1, and X is a radical of the formula --OH, --Cl, --Br and --CN, with the radical --OH being particularly preferred.

Abstract: Crosslinkable compositions comprise novel organosilicon compounds (B.sup.1) containing Si-bonded hydrogen atoms and comprising(a) units of the formulaH.sub.a R.sub.2-a SiO.sub.2 O.sub.2/2 (I),where R is as defined in claim 1 and a is 0, 1 or 2, with the proviso that at least 20 mol % of the units of the formula (I) are ones in which a is 1 or 2,(b) carbostructural units G (II), where G are identical or different and are each a trivalent to decavalent aliphatic hydrocarbon radical having from 7 to 30 carbon atoms per radical, which may contain one or more heteroatoms selected from the group consisting of oxygen, boron, silicon, tin or titanium, with the proviso that at least three Si atoms are connected to one another via G,(c) units of the formula ##STR1## where b is 0, 1 or 2, with the proviso that b in formula (III') is not 2 and with the proviso that the units of the formula (III) or (III') are connected via the Si atoms to the carbostructural units G and(d) units of the formulaH.sub.c R.sub.3-c SiO.sub.

Abstract: A process is provided for treating mineral hydraulically or non-hydraulically setting coating agent and binder compositions using water-redispersible powders wherein one or more organopolymer powders and one or more organosilicon powders are added to the dry coating agent and binder composition.

Abstract: A method and a device for the separation of semiconductor material has the separation procedure carried out on screens coated with ice made of ultrapure water, optionally mixed with particles of semiconductor material. During the separation, the screens are sprayed with ultrapure water and the screen holes are cut free.

Abstract: A shipping container for highly viscous fluids and/or pastes is provided internally with a flexible liquid-tight and gas-tight rubber bladder in which there is disposed a support frame. The rubber bladder can flexibly conform to a first position pressing against the container shell inside wall and to a second position pressing against the support frame.

Abstract: Novel organosiloxane compositions which contain (methyl)styrene groups and can be prepared on the basis ofA) oligomeric or polymeric organosilicon compounds comprising at least one unit of the formulaGR.sub.c SiO.sub.(4-c-1)/2 (I)orat least one unit of the formula (I) and at least one unit of the formulaO.sub.(4-c-1)/2) R.sub.c Si--G.sup.1 --R.sub.c SiO.sub.(4-c-1)/2(II)B) monomeric alkenyloxy compounds, maleates, fumarates, maleimides, (meth)acrylates, (methyl)styrenes, acrylamides, itaconic esters and/or oligomeric or polymeric organosilicon compounds containing on average more than one alkenyloxy, maleate, fumarate, maleimide or (meth)acrylate group, where R are identical or different hydrocarbon radicals which may be halogenated or unhalogenated or a radical of the formula--R.sup.1 --[OCH.sub.2 CH.sub.2 ].sub.o --[OCH(CH.sub.3)CH.sub.2 ].sub.p --[O(CH.sub.2).sub.4 ].sub.q --OR.sup.2,whereR.sup.1 is a linear or branched alkylene radical,R.sup.

Abstract: Methylchlorosilanes are prepared by reacting methyl chloride with a contact catalyst which comprises silicon, copper catalyst, zinc promoters and tin promoters and/or antimony promoters, in which hydrogen chloride is added in the course of from 1% to 45% of the duration of the production campaign.

Abstract: A crosslinkable powder composition is provided which is redispersible in water and comprisesa) from 30 to 95 parts by weight of one or more water-insoluble, film-forming polymers of free-radically polymerizable, ethylenically unsaturated monomers, where from 0.5 to 10% by weight of the monomers, based on the total weight of the polymer a), are ones having one or more substituents selected from the group consisting of aldehyde, keto, epoxide, isocyanate, carboxylic anhydride and aziridine groups,b) from 5 to 70 parts by weight of one or more water-soluble, film-forming polymers, where the parts by weight of a) and b) add up to 100 parts by weight, andc) one or more compounds containing at least two functional groups which are present in salt form and are selected from the group consisting of amines, hydrazides, hydroxylamine esters, aryl- and alkylhydrazines or -hydrazones.

Abstract: A device for protecting semiconductor material includes a support and a surface made of ice formed from ultrapure water. Semiconductor material is situated on this support surface.

Abstract: Aqueous dispersions of organopolysiloxanes comprising (A) an organopolysiloxane containing groups which are capable of condensation, (B) a condensation catalyst, (C) an organopolysiloxane resin which is at least partly soluble in organopolysiloxane (A) when present in amounts of up to 50% by weight based on the weight of (A), (D) a compound containing basic nitrogen and (E) polyvinyl alcohol. The aqueous dispersions are prepared by dissolving the organopolysiloxane resin (C) in the organopolysiloxane (A) and then emulsifying the solution with polyvinyl alcohol (E) and water. The stable aqueous dispersions of the present invention cure to form transparent films.

Abstract: A process for preparing organosilazane and ammonium chloride, by reaction of an organochlorosilane with ammonia in the presence of organosilazane as solvent, wherein ammonium chloride is removed from the resulting organosilazane and ammonium chloride-containing mixture, the improvement comprising adding an antiblocking agent to the mixture before removal, or to the ammonium chloride after its removal, such that a non-blocking, reusable ammonium chloride product is obtained.

Abstract: In silicone release coatings obtained by crosslinking compositions whose constituents comprise (A) alkenyl-functional polyorganosiloxane and an SiH-functional organosiloxane,the release force is regulated by using an SiH-functional organosiloxane (B) having from 0.1 to 60 mol-% of radicals which are incompatible with the compositions,said radicals being regarded as incompatible with the compositions when a mixture of 1 part by weight of SiH-functional organosiloxane (B) having 30 mol-% of incompatible radicals and 9 parts by weight of alkenyl-functional polyorganosiloxane (A) forms more than one phase at 20.degree. C.

Abstract: The invention relates to an indigo-dyed fabric which comprises at least one organopolysiloxane and at least one alkyl polyglycoside.

Abstract: Novel organosilicon compounds containing 1-alkenyloxy groups and comprising units of the formula ##STR1## where R are identical or different and are each a monovalent, halogenated or unhalogenated hydrocarbon radical having from 1 to 18 carbon atom(s) per radical,X are identical or different and are each a chlorine atom or a radical of the formula --OR.sup.1,where R.sup.1 is an alkyl radical having from 1 to 8 carbon atom(s) per radical which may be substituted by an ether oxygen atom,a is 0 or 1, b is 0, 1, 2 or 3, c is 0, 1, 2 or 3, and the sum a+b+c.ltoreq.4,A is a radical of the formula ##STR2## where x is 0 or 1 and y is 0 or 1, with the proviso that the sum x+y is 1 or 2,z is 0 or an integer from 1 to 12,R.sup.2 is a hydrogen atom or a methyl radical,R.sup.3 can be identical or different and are each a linear or branched alkylene radical having from 1 to 6 carbon atom(s) per radical,R.sup.

Abstract: The invention relates to oxyalkylene-group-containing organosilicon compounds having units of the formula ##STR1## where R is identical or different, and denotes a monovalent halogenated or nonhalogenated hydrocarbon radical, X is identical or different and is a chlorine atom or a radical of the formula --OR.sup.1, where R.sup.1 denotes an alkyl radical which can be substituted by an ether oxygen atom,a is 0 or 1,b is 0, 1, 2 or 3,c is 0, 1, 2 or 3 and the total a+b+c.ltoreq.4 andA is a radical of the formula ##STR2## where R.sup.2 signifies an unbranched or branched substituted or unsubstituted divalent hydrocarbon radical, which may or may not contain ether, amine, sulfide, ester, amide, carbonate, urea and urethane groups, B is identical or different, and denotes X, --NR.sub.2.sup.1, --O--C(.dbd.O)--R.sup.1, --SR.sup.1 or a radical of the formula--NR.sup.3 R.sup.2 [O--CH(CH.sub.3)--CH.sub.2 ].sub.d [OCH.sub.2 CH.sub.2 ].sub.e [O(CH.sub.2).sub.4 ].sub.f OR.sup.4 (III),where X, R.sup.1 and R.sup.