Abstract: Branched low-pressure polyethylenes are prepared by oligomerization of ethylene on a nickel-containing catalyst and polymerization of the oligomers obtained, if appropriate in the presence of ethylene, on a chromium-containing catalyst.

Abstract: Branched low-pressure polyethylenes are prepared by oligomerization of ethylene on a nickel-containing catalyst and polymerization of the oligomers obtained, if appropriate in the presence of ethylene, on a chromium-containing catalyst.

Abstract: Ethylene/vinyl acetate copolymers containing very high molecular weight components and having a reduced tendency to tackiness may be obtained by a further addition of ethylene during the process of solution polymerization at a moderate pressure.

Abstract: The invention relates to new graft polymers based on elastomers as the graft base and grafted-on vinyl monomers, their preparation and blend thereof with polyamides.

Abstract: The object of the invention is the use of ethylene-vinyl acetate-copolymers produced by emulsion polymerization and containing unipolymerized acids, for the modification of polyvinyl chloride.

Abstract: The present invention relates to copolymers containing ethylene monomer units and .alpha.-cyanacrylate monomer units and processes for their production.

Abstract: In a reagent strip for the dry-chemical detection of a component of an aqueous sample solution comprising a detection reagent in a membrane, the improvement wherein the membrane is an essentially anhydrous, but water-absorbing, membrane for a reagent substrate in an analytical agent for the dry-chemical detection of a component of an aqueous sample solution, comprising at least one hydrophobic film-forming, water insoluble organic polymer in which at least one hydrophilic organic polymer is dispersed as discrete particles. The reagent can be incorporated into the membrane when produced or can later be applied as by impregnation. The membrane performs as well as or better than multi-layer strips.

Abstract: This invention relates to graft polymers produced from:(1) an elastomer component having glass transition temperatures below 0.degree. C. as the graft base; and(2) graft monomers corresponding to the following general formula: ##STR1## wherein R.sup.1 represents H or a C.sub.1 -C.sub.4 alkyl radical;R.sup.3 represents H, phenyl or a C.sub.1 -C.sub.8 alkyl radical;R.sup.2 represents H, a C.sub.1 -C.sub.10 alkyl or C.sub.6 -C.sub.12 aryl radical or --OR.sup.4 ; andR.sup.4 represents C.sub.1 -C.sub.8 alkyl or C.sub.6 -C.sub.12 aryl optionally substituted by alkyl groups, O-containing or N-containing groups;X represents a single bond, a C.sub.1 -C.sub.10 alkylene or C.sub.6 -C.sub.12 arylene radical, ##STR2## Y represents --O--Z--, --NH--Z--; and Z represents a C.sub.1 -C.sub.10 alkylene or C.sub.6 -C.sub.12 arylene radical;and, optionally, other olefinically unsaturated monomers.

Abstract: Nickel compounds which can be produced by reacting a nickel(O) compound or a nickel compound, which can be converted in situ into a nickel(O) compound, with an adduct or a mixture of maleic acid anhydride and a tertiary phosphine, optionally with a compound of the formula (I) ##STR1## wherein X represents O, NR.sup.4 or ##STR2## and n represents zero or one,and optionally with an organoaluminium compound, are suitable for the homo-and copolymerization of 1-olefins and for the polymerization of acetylene.

Abstract: The new copolymers based on maleic anhydride and .alpha.,.beta.-unsaturated compounds contain, as bivalent structural units,A: 20 to 95 mole % of the structural element ##STR1## B: 0 to 40 mole % of the structural element ##STR2## C: and 0 to 40 mole % of the structural element ##STR3## the sum of the mole percents of (A), (B) and (C) being 100, and wherein R.sup.1 and R.sup.2 are identical or different and denote hydrogen, alkyl, optionally substituted aryl or the ester group ##STR4## in which R.sup.4 represents alkyl with 1 to 20 carbon atoms,R.sup.3 denotes an alkyl, cycloalkyl or optionally substituted aryl radical with 1 to 20 carbon atoms andX and Y are identical or different and represent the group--O--R.sup.5in whichR.sup.5 denotes hydrogen, a cation or alkyl with 1 to 40 carbon atoms, orX and Y represent the group--NHR.sup.3in which R.sup.3 has the abovementioned meaning,at least one of the radicals X and Y representing the group --O--R.sup.

Abstract: Olefins such as ethylene can be polymerized with a catalyst which comprises nickel compounds obtained by reacting a nickel-(O) compound or a nickel compound which may be converted in situ into a nickel-(O) compound with an adduct or a mixture of a quinoid compound and a tertiary phosphine and with a compound corresponding to the following general formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 independently represent C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkenyl, C.sub.6 -C.sub.12 aryl or C.sub.3 -C.sub.8 cycloalkyl optionally substituted by halogen, hydroxy, C.sub.1 -C.sub.20 alkoxy, nitro or C.sub.6 -C.sub.12 aryloxy; also C.sub.6 -C.sub.12 aryl-C.sub.1 -C.sub.20 alkyl, C.sub.6 -C.sub.12 aryl-C.sub.2 -C.sub.20 alkenyl, C.sub.1 -C.sub.20 alkyl-C.sub.6 -C.sub.12 aryl, C.sub.1 -C.sub.20 alkyl-C.sub.3 -C.sub.8 cycloalkyl and C.sub.6 -C.sub.12 aryl-C.sub.3 -C.sub.8 cycloalkyl, di-C.sub.1 -C.sub.4 alkylamino, optionally substituted phenoxy or alkoxy; R.sup.4, R.sup.5 and R.sup.

Abstract: The invention relates to the use of grafted ethylene-vinylacetate copolymers (EVA-copolymers) for the production of hotmelt adhesives.

Abstract: The present invention relates to new thermoplastic contact adhesives. They have high heat resistance and bond strength.

Abstract: Thermoplastic moulding compositions consisting of from 1 to 99% by weight of at least one cellulose ester or cellulose mixed ester, from 99 to 1% by weight of an aliphatic polyester or polyether containing carbonate groups and, optionally, standard auxiliaries and additives.

Abstract: Anhydride-group- or carboxyl-group-containing graft copolymers of vinyl esters and other suitable monomers on polysaccharide esters of (A) a polysaccharide ester of aliphatic C.sub.1 -C.sub.5 -mono-carboxylic acids as the graft substrate and (B) a grafted-on monomer mixture of (a) a vinyl ester of a C.sub.1 -C.sub.18 -monocarboxylic acid and (b) maleic acid anhydride and/or semiesters of maleic acid and/or fumaric acid with aliphatic C.sub.1 -C.sub.14 -monoalcohols, the ratio by weight of (A) to (B) being from 1:0.1 to 1:2 and the molar ratio of (a) to (b) being from 1:0.5 to 1:3, and a process for producing these graft copolymers.

Abstract: Nitric acid esters of monosaccharides and/or polysaccharides can be used as ignition improvers for alcoholic fuels for internal combustion engines.

Abstract: A process for crosslinking with peroxides using triallyl citrates as activators and co-agents.

Abstract: Modified olefine polymers of 20 to 98 parts by weight of an olefine homopolymer or copolymer and 0.5 to 80 parts by weight of a polymer containing aliphatic polyester blocks, which polymers are chemically linked through 0.5 to 40 parts by weight of a polymer of a monomer containing olefinic double bonds, a method for their manufacture, and their employment as moulding compositions.

Abstract: Transparent thermoplastic moulding compositions having improved mechanical properties consist of graft copolymers or mixtures thereof with a cellulose ester of aliphatic C.sub.1 -C.sub.5 carboxylic acids, wherein the graft copolymers consist of an ethylene vinyl ester copolymer and a cellulose ester of aliphatic C.sub.1 -C.sub.5 -carboxylic acids as the graft substrate, at least part of which being bridged with polymerized grafted units of vinyl esters and/or alkyl esters of acrylic and/or methacrylic acid, and, optionally, C.sub.2 -C.sub.4 -olefins.

Abstract: A process for the production of ethylene graft copolymers containing anhydride or carboxyl groups in homogeneous or heterogeneous phase in tert.-butanol or methylene chloride wherein (A) from 5 to 70% by weight of a monomer mixture of: (a) from 10 to 80% by weight of a vinyl ester of an aliphatic C.sub.1 -C.sub.18 -monocarboxylic acid; and (b) from 90 to 30% by weight of maleic acid anhydride and/or its C.sub.1 -C.sub.20 -alkyl semiesters; are radically polymerized in the presence of (B) from 95 to 30% by weight of an ethylene homopolymer or an ethylene/vinyl ester copolymer as the graft substrate.