Abstract: The invention relates to crosslinked polymers based on polyvinyl acylate or polyvinyl alcohol and having crosslinking agent units which are derived from crosslinking agents of the general formulae ##STR1## These products, inter alia, are particularly hydrolysis-resistant and can have high crosslinking densities.The invention also relates to a process for preparing these polymers and to their use in chromatography and as carriers for biologically active substances.

Abstract: Crosslinked polymers which are produced from monomers containing epoxide groups, crosslinking monomers and, where appropriate, other monoethylenically unsaturated monomers are composed of principally spherical porous particles and are very suitable as carrier materials for the immobilization of biologically active substances.

Abstract: Modified polymers based on polyvinylene carbonate and/or polyhydroxymethylene are prepared containing covalently bonded units derived from particular alkoxylated compounds. Polymerization is carried out in the presence of the alkoxylated compounds and a particular dispersion stabilizer. The modified polymer is suitable as a carrier for biologically active substances or for affinity chromatography.

Abstract: The invention relates to crosslinked polymers based on polyvinyl acylate or polyvinyl alcohol and having crosslinking agent units which are derived from crosslinking agents of the general formulae ##STR1## and/or ##STR2## These products, inter alia, are particularly hydrolysis-resistant and can have high crosslinking densities.The invention also relates to a process for preparing these polymers and to their use in chromatography and as carriers for biologically active substances.

Abstract: The invention relates to modified polymers based on polyvinylene carbonate and/or polyhydroxymethylene, the modification being effected by particular alkoxylated compounds incorporated into the polymer. These polymers, for the preparation of which, according to the invention, particular dispersion stabilizers are used, are suitable, inter alia, as carriers for biologically active substances or for affinity chromatography.

Abstract: The invention relates to modified polymers based on polyvinylene carbonate and/or polyhydroxymethylene, the modification being effected by particular alkoxylated compounds incorporated into the polymer. These polymers, for the preparation of which, according to the invention, particular dispersion stabilizers are used, are suitable, inter alia, as carriers for biologically active substances or for affinity chromatography.

Abstract: Crosslinked polymers which are produced from monomers containing glycerol carbonate groups, crosslinking monomers and, where appropriate, other monoethylenically unsaturated monomers are composed of principally spherical porous particles and are very suitable as carrier materials for the immobilization of biologically active substances.

Abstract: The invention relates to bead polymers based on monomers of the formula ##STR1## in which X is hydrogen or methyl, R denotes an aliphatic hydrocarbon radical having 1 to 12 carbon atoms, and Y denotes OH or NH.sub.2, which have been prepared using a special dispersion stabilizer. They are particularly distinguished by high porosity and are very suitable as carrier materials for biologically active substances.

Abstract: The invention relates to bead polymers based on vinylene carbonate which are distinguished, in particular, by high porosity and which are well suited as carrier materials for biologically active substances.The preparation of these bead polymers is carried out, according to the invention, in the presence of certain dispersion stabilizers.

Abstract: Acetoacetic acid pentaerythrite phosphite ester may be easily mixed with polymers and improves their processing, color and weather stability.

Abstract: Bis(hydroxyphenyl)-alkanoic acid esters the phenyl radicals of which are alkylated twice are prepared by alkylation of corresponding compounds carrying one alkyl radical at the nucleus, using isobutylene as alkylating agent. The alkanoic acid esters are obtained in crystalline form and are suitable as stabilizers for polyolefins.

Abstract: Piperidone derivatives of the formula ##STR1## in which R.sup.1 and R.sup.2, which may be identical or different, each represent a hydrogen atom or a halogen atom or an alkyl or alkoxy group of 1 to 9 carbon atoms, process for preparing them and pharmaceutical preparations consisting of, or containing, these compounds.

Abstract: When replacing the low molecular mercaptan used as a catalyst in the known process for preparing condensation products of phenols and acetoacetic acid esters by an n-alkyl mercaptan having of from 8 to 20 carbon atoms, the yield is improved and the reaction time reduced, while the working up of the reaction batch is simultaneously improved.

Abstract: Pharmaceutical compositions acting on the metabolism which contain as active substance bis(4-hydroxy-phenyl)alkanoic acids corresponding to the formulae I and II ##STR1## wherein R.sup.1 and R.sup.2 wich may be identical or different, each stands for a hydrogen or halogen atom or an alkyl group having 1 to 4 carbon atoms, R.sup.3 stands for a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R.sup.4 stands for hydroxy, alkoxy having 1 to 18 carbon atoms, phenyl-alkoxy having 1 to 4 alkyl carbon atoms, cycloalkoxy having 5 to 8 carbon atoms or a group of the formula ##STR2## in which Z and Z', which may be identical or different, each stands for hydrogen, alkyl of 1 to 18 carbon atoms, phenyl or cycloalkyl of 5 to 8 carbon atoms, or both together with the nitrogen atom may form a heterocyclic ring, R.sup.6 stands for an alkylene radical having 2 to 12 atoms and n stands for zero or an integer of 1 to 6, and process for preparing them.

Abstract: Pharmaceutical compositions acting on the metabolism which contain as active derivatives of the 4-hydroxy-3,5-di-akylphenyl-propionic acid corresponding to the formula I and II ##EQU1## wherein R.sub.1 and R.sub.2 which may be identical or different, each stands for an alkylradical having 1 to 8 carbon atoms,R.sub.3 stands for an alkylene radical having 2 to 12 carbon atoms,X stands for hydroxy, alkoxy having 1 to 18 carbon atoms, phenalkoxy having 1 to 4 alkyl carbon atoms, cycloalkoxy having 5 to 8 carbon atoms, --NR.sub.4 R.sub.5 in which R.sub.4 stands for an alkyl group having 1 to 18 carbon atoms, R.sub.5 stands for a hydrogen atom or R.sub.4 and R.sub.5 may form with the nitrogen atom a heterocyclic six-membered ring which may carry another hetero atom and n is an integer from 2 to 4 and process for preparing them.

Abstract: Bisphenol-carboxylic acid esters are prepared from definite phenols and acetoacetic acid esters by condensing the components in the presence of hydrogen chloride at a temperature of from -10.degree. to +15.degree.C, using ethyl mercaptan as catalyst; the obtained esters are useful for stabilizing plastic resins, as varnishing resins, and as fungicidal or bactericidal agents.

Abstract: Polyphenol-carboxylic acid esters are prepared from definite phenols and polyacetoacetic acid esters by condensing the components in the presence of hydrogen chloride at a temperature of from -10.degree. to +15.degree.C, using ethyl mercaptan as catalyst; the obtained esters are useful as fungicides or bactericides as well as for stabilizing plastic resins and manufacture of varnishing resins.