Abstract: Adherence of polyvinylchloride coatings to substrates such as metal, glass, and ceramics is improved by using as the coating composition a copolymer of polyvinylchloride admixed with monoalkyl-monyaryl, dialkyl, or diaryl tin bismercaptocarboxylic acid ester of polyvalent alcohol. The composition adheres directly to the substrate.

Abstract: A process for producing propellant charge powders from solvent-containing mixtures such as nitroguanidine powders containing nitrocellulose and/ or nitrocellulose and diglycol dinitrate or nitroglycerin and nitroguanidine and additives wherein an alcohol-containing mixture or optionally a water-containing mixture of said propellant charge powders is premixed with additional components of the propellant powder, the mixture is first dried, if necessary, and the solvent is incorporated therein and the solvent-containing premix is homogenized and preplasticized in a kneading device or the water-containing premix is homogenized and preplasticized in the kneading device and then the resultant mixture is dewatered by drying and then combined with a solvent; then the solvent-containing mixture is plasticized in an extruder and converted thereby into granular form and the resulting granular material is extruded into a final product form in a screw-type extruder. Subsequently, the solvent is evaporated therefrom.

Abstract: A process for the manufacture of granular abrasives having improved grain toughness from refractory, inorganic hard substances which comprises crushing a lump or block of said refractory inorganic substance, thereafter subjecting the resultant grains to a grind sorting process such that substantially only the porous grains, grains containing flaws or coarsely crystalline grains are comminuted and separating them in the ground condition from the balance of the material.

Abstract: An improved process for the hydrochlorination of vinyltrichlorosilane to prepare .beta.-chloroethyltrichlorosilane, which hydrochlorination is carried out by reacting the vinyltrichlorosilane with HCl in the presence of a Lewis catalyst, the improvement lying in carrying out the reaction at a temperature between 30.degree. and 65.degree. C, preferably at normal pressure.

Abstract: A method for protecting the surface of a metal surface which comprises applying to said surface an organophosphorus compound of the formula ##STR1## wherein A IS 0 OR 1R is a branched or unbranched chained bivalent alkylene radical of 1 to 12 carbon atoms which is substituted or unsubstituted and can contain in the chain structure --O--, --S--, ##STR2## R' is a branched or unbranched alkyl radical of 1 to 12 carbon atoms which can be halogen substituted and can contain in the chain structure ##STR3## X is an epoxy ring, halogen, alkylene, carboxylic acid ester residue, amino, isocyanato, isothiocyanato, urea, thiourea, urethano, alkyl substituted thio radical or the radical or a heterocyclic ring containing O, S, or N in the ring structure; a new organophosphorus compounds having the formula set forth above and more particularly defined by specific chemical structures.

Abstract: An electrical heating element composition comprising crystals of fused magnesium oxide improved by the inclusion of 0.05 to 5% by weight, based on the weight of said fused magnesium oxide, of an additive composition which has excellent lubricating properties in respect of the magnesium oxide crystals and reacts at 800.degree. to 1050.degree. C with active conductivity centers at the surface of one or more adjacent magnesium oxide crystals; an improvement in the preparation of an electrical heating element wherein a granular fused magnesium oxide composition is subjected to mechanical shaping and calcination which comprises employing as the electrical heating element composition a composition comprising crystals of fused magnesium oxide and 0.05 to 5% by weight, based on the weight of said fused magnesium oxide, of an additive composition which has excellent lubricating properties in respect of the magnesium oxide crystals and reacts at 800.degree. to 1050.degree.

Abstract: A process for improving the free-flowing qualities of a urea formaldehyde resin which comprises adding to said resin:A. a polyorganosiloxane having recurring units of the formulaX(R).sub.a SiO.sub.3-a/2whereinX is alkyl, alkylene or a hydrocarbon having a functional group;R is hydrogen, alkyl, alkoxy or aryl;a is a value from 0 to 2, or a hydrolysis product thereof;OrB. a silane of the formula Y--A.sub.n --Si(R").sub.b (OR').sub.3-bWhereinY is a substituted or unsubstituted amino, carboxyl, glycidyl, mercapto or alkenyl group;A is a bivalent straight or branched-chained alkylene radical which can contain oxygen in the chain;R' is an alkyl or hydroxyalkyl radical;R" is a C.sub.1 -C.sub.4 alkyl radical;n is 0 or 1; andb is 0, 1 or 2, or a hydrolysis product thereof.

Abstract: Apparatus for fire protection purposes including a compressed-gas cartridge device with at least a thermally responsive triggering mechanism. The triggering mechanism includes a striker for forcibly being driven toward the compressed-gas cartridge device and a locking device for maintaining the striker at a spacing from said compressed-gas cartridge device by engaging a portion of said striker pin with one end portion thereof. Another end portion of the locking device is biased against a blocking device with the blocking device being disposed between the another end portion of the locking device and an abutment member. The blocking device is responsive to the exceeding of a predetermined temperature for enabling displacement of the locking device out of engagement with the striker thereby permitting movement of the striker toward the compressed-gas cartridge device.

Abstract: An improvement in a process for preparing silicon tetrachloride or silicon trichloride wherein elemental silicon is contacted with hydrogen chloride in a fluidized bed, the improvement residing in carrying out the process in the presence of an iron compound, which iron compound is present in an amount such that when calculated as iron, the iron content is 10 to 43 weight percent based on the weight of the total solids in the fluidized bed, at a temperature in the range of 260.degree.-600.degree. C, preferably in the absence of an inert gas.

Abstract: A self-supporting interior lining or vehicle dome having in the edge zones thereof at least one clamping or mounting bead adapted to cooperate with at least one undercut provided in the vehicle roof structure to mount the same thereon. At least one of the clamping bead and vehicle dome or a portion thereof is manufactured of an elastic material to facilitate installation within the vehicle.

Abstract: An apparatus for the continuous manufacture of phenolic resin foam in an endless sheet which includes mixing means for expandable liquid phenolic resin with a blowing agent and an acid-containing curing agent, optionally with the addition of additives, and means for processing the mixture in a temperature-controllable double belt press. The apparatus also comprises a device for cooling the phenolic resin to a temperature of from about 8.degree. to about 15.degree. C.

Abstract: A process for the preparation of an alcohol-free alkali or alkaline earth metal alcoholates dissolved in inert solvent which comprises contacting at least an equimolar amount of an alkali or alkaline earth metal dissolved in an inert solvent with an alcohol at an elevated pressure and at a temperature of at least that at which crystal alcohol splits off from the corresponding alkali or alkaline earth metal alcoholate and below the temperature at which said alcoholate decomposes under the prevailing pressures.

Abstract: A profile arrangement for window frames or doorframes which includes Z-shaped, T-shaped or L-shaped profile members serving as either a blind frame element or a sash frame element. The profile members are provided with at least one projecting centrally disposed tongue portion on one side thereof which serves as a receptor for either a sealing element or for receiving a portion of a glass molding member having a hollow chambered cross-sectional configuration. The profile members include a number of hollow chambers at least one of which may be provided with a metallic insert to increase the reinforcement of the profile members. A glass molding element is provided which includes a projecting cam portion which is adapted to interengage with the projecting tongue portion of the profile members to fix a glazing to the respective profile member.

Abstract: An improvement in a process for the preparation of an alkoxysilane of the formula:R.sub.4.sub.-n.sub.-m Si(OR').sub.n Cl.sub.mwhereinR is hydrogen or a saturated or unsaturated, chlorinated or unchlorinated alkyl radical of 1 to 12 carbon atoms;R' is an alkyl radical of 1 to 11 carbon atoms which can contain a hetero atom in the chain;m equals 0 to 3;n equals 1 to 4;n + M is equal to or less than 4;By esterification of a chlorosilane of the formula:R.sub.4.sub.-n SiCl.sub.

Abstract: An aromatic polynuclear, halogenated, aromatic benzyl ether of the formula ##STR1## WHEREIN W is a chlorine or bromine atom or a methyl radical or the radical --CH.sub.2.Z, said radical W being disposed in the ortho, meta or para position with respect to the CH.sub.2.Z radical, Hal represents a chlorine or bromine atom, n is 0 to 4 and Z represents a phenoxy radical of the general formula ##STR2## wherein X is a chlorine or bromine atom, R is a hydrogen atom or an alkyl radical having 1 to 4 carbon atoms, a is 2 to 5 and b is (5-i a); a process for producing such polynuclear halogenated benzyl ether by contacting a benzyl halide of the general formula ##STR3## wherein Hal and n have the previously assigned significance, X is a chlorine or bromine atom, Y is the same as CH.sub.2 X or is a hydrogen or chlorine atom or a methyl radical and is disposed in the ortho, meta or para position with respect to the radical --CH.sub.

Abstract: A mounting element for synthetic resin films loosely laid on abutting thermal insulating panels for heat-insulated roof constructions without a gravel layer, which comprises a T-shaped panel securing means and a mounting flange means arranged at the base point of the T-shaped means at a right angle thereto and on one side thereof.

Abstract: Process for the preparation of tris-(halophenoxy) -1,3,5-triazine of formula I ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 is each a phenoxy substituent having a 0-2 alkyl groups, and 0-2 halo alkyl groups, and has 1-5 halogen atoms which comprises contacting cyanuric acid chloride with alkali phenolate of the formulae R.sub.1 Me, R.sub.2 Me and R.sub.3 Me, wherein Me is alkali metal, and wherein said formulae can be identical or different, in the presence of alkylene diol monoalkyl ether, e.g. methyl or ethyl cellosolve. The ethers are good solvents for the phenolates. The products are used as flame-proofing agents for plastics.

Abstract: A process for the manufacture of wire insulation varnish resins suitable for application from the melted state which comprises:1. Contacting a lower alkyl ester of terephthalic acid with tris-(hydroxyethyl)-isocyanurate and ethylene glycol in the presence of a trans esterification catalyst in the presence of 0.3 to 1.5% of an alcoholate of titanium, vanadium or zirconium and effecting transesterification under transesterification conditions;2. Contacting the transesterification product from step 1 with trimellitic acid anhydride under esterification conditions to further effect esterification, but prior to completion of such esterification;3. Adding to the reaction mixture 4,4'-diaminodiphenyl methane in an amount such that the molar ratio of trimellitic acid derived from trimellitic acid anhydride to said 4,4'-diaminodiphenylmethane is 2 to 1; and4. Polycondensing the reaction mixture until a resin is formed having a consistency at 140.degree. to 160.degree.

Abstract: An unsaturated polyester having recurring units of the formula ##STR1## wherein A is an alcoholic moiety, Q is a moiety of other saturated dicarboxylate acids and B is a moiety of an unsaturated dicarboxylic acid, n is 1 to 4, the sum l + m + g is 2 to 20 and l may be 0 or a whole number, said polyester generally having between 1 and 80 mole percent of a chlorinated phenylene acetic acid moiety whose formula is ##STR2## a solution of said such unsaturated polyester, particularly a solution of the same in a copolymerizable monomer, formed objects thereof and a process for the preparation of such unsaturated polyester.

Abstract: A composition comprising a granular inorganic oxidic material other than glass powder and 1 to 30 weight percent, based on the weight of said material, of glass powder, especially a composition additionally containing a hardenable thermo- or cold-setting phenolic resin, which composition does not disintegrate at high temperatures and retains compressive strength.