Abstract: An improvement in a process for the preparation of thermoplastically workable fluoro-polyolefins and their copolymers wherein a fluorine containing olefin is polymerized or copolymerized in the aqueous phase in the presence of a water-soluble, radical-forming catalyst and a polymerization regulator, the improvement residing in employing as the polymerization regulator a halogenated hydrocarbon having from 1 to 3 carbon atoms and at least three halogen atoms of which at least one is a fluorine atom and at least 1 is a bromine or iodine atom.

Abstract: A stabilized polyamide composition comprising a random polyester amide containing the following moieties: ##EQU1## where A is an aliphatic, cycloaliphatic or aromatic residue or mixtures therof, B is an aliphatic or cycloaliphatic residue or mixtures thereof, and Y is an aliphatic or cycloaliphatic residue, the moieties I being present in an amount of 20 to 80 mole percent, the structural moieties II, III or mixtures thereof being present in an amount of 80 to 20 mole percent, and:A. phosphorous acid, an alkyl or aryl ester thereof,B. triphenylphosphine, andC. a sterically impeded phenol;A process for the stabilization of a polyester amide obtained by the melt condensation of 2,2-dimethylpropanediol,1,3, cycloaliphatic and/or aliphatic, diprimary diamines and dicarboxylic acids and/or .omega.-aminocarboxylic acids or lactams thereof which contain hexamethylene diammonium adipate in the structure which comprises carrying out the condensation in the presence of a stabilizer which comprises:A.

Abstract: Glycidylexypropylalkoxysilanes are produced by thermal treatment of novel siliceous dioxalane derivatives of the formula: ##EQU1## wherein a is 0 to 1 and R represents an oxygen radical or two hydrogen atoms and R' and R" each represents an alkyl radical, wherein the R" 's can be the same or different. The glycidyl products are useful as adhesives.

Abstract: Process for producing tetrazole-1-acetic acid of maximum purity includes the steps of providing a crude reaction product containing an alkyl ester of tetrazole-1-acetic acid having from 1 to 4 carbon atoms in the alkyl group, effecting molecular distillation of this reaction product at a temperature below 130.degree.C. under a vacuum of 10.sup.-.sup.1 torr to obtain a distillant containing the alkyl ester and then gently hydrolyzing the resultant distillate to obtain the desired acid product.

Abstract: A polyamide sheet having electrical creep resistance of quality class KA 3b according to Deutsche Industrie Norm 53,480, especially one prepared by a screw injection molding process utilizing a kneading action under a pressure of between 5 and 80 kiloponds per square centimeter at a temperature of 240.degree. to 320.degree.C utilizing a polyamide of an alkyl substituted aliphatic diamine and a lower alkyl ester of terephthalic acid.

Abstract: Process for the preparation of especially pure 2,2-bis-(4-hydroxy-3-chlorophenyl)-propane (dichlordiane, DCD) by the chlorination of 2,2-bis-(4-hydroxyphenyl)-propane in the presence of solvents that are substantially indifferent to chlorine by prior-art methods; then, for purification, the chlorinated bis-phenol is dissolved in halogenated hydrocarbons and/or halogenated hydrocarbon in which are liquid at 20.degree.C which they are readily soluble in the absence of an aqueous phase but in which they are at most only slightly soluble after the addition of water thereto; and the 2,2-bis-(4-hydroxy-3-chlorophenyl)-propane, is thereby precipitated from this aqueous solution.