Abstract: A carbonate corresponding to formula (I) ##STR1## in which R is aromatically bound polystyrene moiety and --O--D--O-- is a diphenolate moiety in which --D-- is a divalent group containing 6 to 30 carbon atoms and r is 0 or 1 is disclosed. The carbonate is useful as a flow aid for thermoplastic molding compositions.

Abstract: The invention relates to poly(meth)acrylates having grafted-on polycarbonate chains, to their production and to their use as modifiers for thermoplastic polycarbonates having improved resistance to gasoline and/or improved impact strength at low temperatures and to their production.

Abstract: A process for producing a graft copolymer is disclosed. The graft copolymer, based on a rubber which contains phenolic OH groups and grafted with polycarbonate chains is produced under the conditions of the two-phase interfacial polycondensation. Also disclosed are gasoline resistant thermoplastic polycarbonate compositions containing the graft.

Abstract: The invention relates to ternary thermoplastic mixtures of polycarbonates, polyurethanes and graft polymers and, optionally, standard additives and to processes for the production of these mixtures.

Abstract: The invention relates to polyacrylates corresponding to formula (I) ##STR1## to their production in a quasi-ionic polymerization and to their use as monofunctional chain terminators, optionally in combination with typical other chain terminators, for the production of aromatic polycarbonates.The invention also relates to the polycarbonates or polycarbonate mixtures obtained using the compounds corresponding to formula (I) and to their use as additives for other thermoplastic polycarbonates.

Abstract: The invention relates to a thermoplastic molding composition comprising(A) from 10 to 98 parts by weight of a polydiorganosiloxane-polycarbonate block copolymer having a weight average molecular weight of from 10,000 to 200,000 and containing from 75 to 97.5 wt. % of aromatic carbonate structural units and from 25 to 2.5 wt. % of polydiorganosiloxane structural units;(B) from 2 to 90 parts by weight of a thermoplastic, aromatic polycarbonate having a weight average molecular weight of at least 10,000, andcontaining bifunctional carbonate structural units corresponding to ##STR1## wherein R.sup.1 and R.sup.2 independently represent hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.6 cycloalkyl, C.sub.6 -C.sub.10 aryl or C.sub.7 -C.sub.12 aralkyl;m represents an integer of from 4 to 7,R.sup.3 and R.sup.4, which may be selected individually for each X, independently represent hydrogen or C.sub.1 -C.sub.6 alkyl; andx represents carbon,with the proviso that, on at least one atom X, R.sup.3 and R.sup.

Abstract: Copolycarbonates derived from known bisphenols and small quantities of dihydroxydiphenyl cycloalkanes corresponding to formula (I) ##STR1## wherein R.sup.1 and R.sup.2 denote, independently of one another, hydrogen, halogen, preferably chlorine or bromine, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.6 cycloalkyl, C.sub.6 -C.sub.10 aryl, preferably phenyl, and C.sub.7 -C.sub.12 aralkyl, preferably phenyl-C.sub.1 -C.sub.4 -alkyl, in particular benzyl,m denotes an integer with a value from 4 to 7, preferably 4 or 5,R.sup.3 and R.sup.4, which are selected independently for each X, denote, independently of one another, hydrogen or C.sub.1 to C.sub.6 alkyl, andX denotes carbon under the condition that R.sup.3 and R.sup.4 are both alkyl on at least one X atoms are disclosed. These copolycarbonates are characterized by their improved processing stability.

Abstract: Polyester-carbonate/polysiloxane block copolymers containing the following recurring structural units: ##STR1## wherein the structural units (1) comprise at least 75 wt.% of the sum of the structural units (1) and (2), exhibit better low temperature tough fracture properties than the known polyester-carbonate/polysiloxane block copolymers containing comparable recurring structural units on comparison of polyester-carbonate/polysiloxane block copolymers of the same heat resistance.

Abstract: Fire-retardant polycarbonates, polyester carbonates and polyesters based on dihydroxydiphenyl cycloalkanes ##STR1## in which R.sup.1 and R.sup.2 independently of one another represent hydrogen, halogen, preferably chlorine or bromine, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.6 cycloalkyl, C.sub.6 -C.sub.10 aryl, preferably phenyl and C.sub.7 -C.sub.12 aralkyl, preferably phenyl-C.sub.1 -C.sub.4 -alkyl, more especially benzyl,m is an integer of 4 to 7, preferably 4 or 5, R.sup.3 and R.sup.4 may be individually selected for each X and, independently of one another, represent hydrogen or C.sub.1 -C.sub.6 alkyl andX is carbon,with the proviso that, at at least one atom X, R.sup.3 and R.sup.4 are both alkyl,the fire-retardant finish being provided by additives and/or comonomers.

Abstract: The present invention relates to the use of polysiloxanes containing amino groups as additives for improving levelling and wetting of polyurethane-based coating compositions applied to plastic substrates. The present invention additionally relates to the coated plastic substrates.

Abstract: Moldings of mixtures of an aromatic polycarbonate and a thermotropic polymer show a reduced tendency towards delamination when they contain a fluorinated polyolefin and an elastomeric graft polymer.

Abstract: This invention relates to mixtures of thermoplastic aromatic poly(ester)carbonates with thermoplastic polyurethanes containing special graft polymers and, optionally, suitable additives, to a process for their production and to the use of the mixtures according to the invention for the production of moldings, particularly by injection molding or extrusion.

Abstract: The present invention relates to mixtures of polycarbonates and polyisobutylenes, polydiorganosiloxane-polycarbonate block cocondensates being employed as the polycarbonates and polyisobutylene homopolymers or polyisobutylene-isoprene copolymers as the polyisobutylenes. If appropriate, the moulding compositions can also contain ethylene homo- or copolymers.

Abstract: The present invention relates to thermoplastic moulding compositions containing polydiorganosiloxane/polycarbonate block copolymers, elastomeric polymers and, if appropriate, polyalkylene terephthalates.

Abstract: The present invention relates toA. Thermoplastic moulding materials based on polydiorganosiloxane/polycarbonate block copolymers and ABS polymers andB. Thermoplastic moulding compositions based on polysiloxane/polycarbonate block copolymers, elastomeric polymers and, if appropriate, polyalkylene terephthalate.

Abstract: Thermoplastic polyphosphonatocarbonate prepared by polycondensing at least one aromatic dihydroxy compound with a diaryl carbonate and a phosphonic acid diaryl ester in the presence of a basic polycondensation catalyst at a temperature of from 80.degree. to 340.degree. C. and under a pressure of 600 to 0.1 mm Hg in an inert gaseous atmosphere, the molar ratio of diaryl carbonate to phosphonic diaryl ester being from 5:95 to 95:5 and the molar ratio of aromatic dihydroxy compound to the sum of diaryl carbonate and phosphonic acid diaryl ester being from 0.91:1 to 0.99:1, and following polycondensation, neutralizing said basic catalyst.

Abstract: The present invention relates to the preparation of thermoplastic poly-(diorganosiloxane)/polycarbonate block copolymers containing monoalkylphenyl or dialkylphenyl end groups by the phase boundary process, and to the block copolymers which can be obtained by the process.

Abstract: The present invention relates to thermoplastic moulding materials of (A) thermoplastic polycarbonates mixed with (B) thermoplastic polyalkylene terephthalates and, if appropriate, with (C) elastomeric polymers, which are characterized in that they contain (D) a polycarbonate-polyphenylene oxide block co-condensate.

Abstract: Moulding compositions based on polyalkylene terephthalate, polycarbonate, polymer and fluorinated polyolefin have higher Vicat-softening temperature if the polymer and the fluorinated polyolefin are precipitated together from a mixture of the dispersions of both components.

Abstract: The present invention relates to thermoplastic moulding compositions of (A) thermoplastic polycarbonates, if appropriate mixed with (B) thermoplastic polyalkylene terephthalates and, if appropriate, additionally with (C) elastomeric graft polymers, characterized in that they contain (D) a terpolymer of acrylates, vinyl esters and unsaturated nitriles.