Abstract: The present invention relates to polycondensates of the formula 10, their use for absorbing metal ions of the transition elements of the periodic system and their use for the preparation of polymers containing metals of formula 11 which have e.g. improved resistance to heat and to chemicals compared to the corresponding polycondensates of formula 10.

Abstract: A process for the preparation of multinuclear phenols alkylated in the nucleus, wherein bisphenol A is reacted with a phenyl alkenyl compound in the presence of a catalytic quantity of aluminium phenolate and resols obtained from said alkylated phenols.

Abstract: The present invention relates to flame resistant aromatic polycarbonate molding compositions which are blends containing between about 0.1 to 15 wt.% of sulphur. The blends of the present invention may also contain up to about 30 wt.% of glass fibers. The present invention also relates to improving the flame resistance of polycarbonate molding compositions by physically incorporating 0.1 to 15 wt.% of sulphur therein.

Abstract: The invention relates to a thermoplastic moulding composition comprising an aromatic high-molecular weight polycarbonate based on a diphenol, with a weight-average molecular weight (M.sub.w) of at least 10,000 and from 0.5 to 5% by weight, relative to the high molecular weight polycarbonate, of a polycarbonate which has an M.sub.w of from 1,200 to 9,000 and which corresponds to the formula (I): ##STR1## wherein "E" represents a radical of the formula (II): ##STR2## in which THE GROUPS R' are identical and denote H or halogenx is an integer of from 7 to 24"Z" is a divalent aromatic radical, and"n", the degree of polymerization, results from the M.sub.w between 1,200 and 9,000.

Abstract: The present invention relates to a process of producing .alpha., .alpha., .alpha., .alpha.', .alpha.', .alpha.'-hexakisaryl-1,3- and -1,4-dimethyl benzenes by reacting .alpha., .alpha., .alpha.', .alpha.'-tetrakisaryl-1,3 or -1,4-bis-(chloromethyl)- or -bis-(hydroxymethyl)- benzenes with 2 to 30 times the molar quantity (based on the tetrakis benzene) of phenol or a substituted phenol.

Abstract: The invention relates to statistical mixtures of halogenated bisphenols with halogen-free bisphenols and to processes for their preparation. This invention further relates to new aromatic, bromine-containing and/or chlorine-containing, high-molecular weight thermoplastic polycarbonates with good resistance to fire (oxygen index .gtoreq. 36%) and good flow properties, to their preparation from the statistical mixtures of halogenated bisphenols and halogen-free bisphenols and to their use alone or as a mixture with halogen-free polycarbonates or with thermoplastic polyesters for the preparation of moldings, films and fibers.

Abstract: Boron-containing resins suitable for reinforcing rubber are obtained by reacting diphenylol alkane novolaks with boron compounds and unsaturated fatty acids or fatty acid esters.

Abstract: New [1,1,2-tris-(o/p-hydroxyphenyl)-1-phenyl-ethanes] and their preparation by reacting acetophenone derivatives with phenol at temperatures between -20.degree. and 200.degree. C.

Abstract: The sensitivity of silver halide emulsions is increased if the silver halide is precipitated in the presence of a peptization agent which consists partially or wholly of a copolymer comprising 0.1 to 20 mol% of recurring structural units of the formula ##STR1## in which X is hydrogen or alkyl having 1 to 4 carbon atoms and Y is a 8-hydroxyquinoline group attached through its 5- or 7-position.

Abstract: Homo- and copolymers of monomers obtained by acylation of 2-[4-hydroxy(or amino)phenyl]-2-[5-(8-hydroxyquinolyl)]-propane with .alpha.,.beta.-monoolefinically unsaturated carboxylic acid halides or - anhydrides. As comonomers can be employed compounds containing one or more .alpha.,.beta.-olefinically unsaturated groups such as olefines, diolefines, acrylic acid derivatives, vinyl monomers. The polymers having molecular weights between 5000 - 500,000 can be prepared by radical or ionic chain mechanisms, in continuous or discontinuous processes. They may be used for removing metal ions from their solution, for complexing of interfering metallic impurities in thermoplastic or thermosetting resins or in form of their metal complexes as stabilizers for plastics.

Abstract: The present invention is related to high molecular weight polycarbonates based on aromatic dihydroxy compounds which contain 5 to 100 mol % preferably 20 to 100 mol % of structural units derived from .alpha.,.alpha.,.alpha.,.alpha.',.alpha.',.alpha.'-hexakisaryl-1,3-and/or -1,4-dimethyl benzene dihydroxy compounds. In a preferred embodiment, the polycarbonate is a copolymer of the hexakisaryl dihydroxy compounds and bisphenols known to be useful in producing polycarbonates. The residues of the hexakisaryl compound may be 5 to 90 mol %, preferably 20 to 70 mol % of the structural units. An especially preferred copolymer is that between the hexakisaryl compounds and .alpha.,.alpha.'-(hydroxyphenyl)-diisopropyl benzenes. These polycarbonates show improved heat stability and higher second order transition temperature points than conventional polycarbonates and are useful in applications involving high service temperatures such as electrical insulating film.

Abstract: The subject matter of the invention relates to 1,4-bis-(4',4"-dihydroxy-triphenyl-methyl)-benzene and to plastics, in particular to branched polycarbonates, on the basis of this tetra-hydroxy-compound.

Abstract: Polymerizable monomers of the formula I ##SPC1##whereinX denotes --O-- or --NH--,R denotes H--, --COOH or --COOR.sub.3,R.sub.1 denotes --H or --CH.sub.3 andR.sub.2 denotes H-- or --CH.sub.3, said monomers are obtained by acylation of 2-[4-hydroxyphenyl]-2-[5-(8-hydroxyquinolyl)]-propane or 2-[4-aminophenyl]-2-[5-(8-hydroxyquinolyl)]-propane with acid halides of the formula.

Abstract: The present invention relates to a process of producing .alpha., .alpha., .alpha., .alpha.', .alpha.', .alpha.'-hexakisaryl-1,3- and -1,4-dimethyl benzenes by reacting .alpha., .alpha., .alpha.', .alpha.'-tetrakisaryl-1,3 or -1,4-bis-(chloromethyl)- or -bis-(hydroxymethyl)- benzenes with 2 to 30 times the molar quantity (based on the tetrakis benzene) of phenol or a substituted phenol.

Abstract: A process for the production of light colored condensation resins, wherein phenols are reacted with .alpha.,.alpha.'-dihydroxy-diisopropyl benzenes in the presence of acids of phosphorus at temperatures of between 70.degree. and 270.degree.C.