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 molding compositions comprising a polycarbonate resin, a thermoplastic polyester and an impact modifier were found to maintain their impact performance, especially at low temperatures, while exhibiting a reduced melt viscosity upon the blending therewith a relatively small amount of a certain ester plasticizer.

Abstract: The subject of the present invention is a process for the preparation of polydiorganosiloxanes containing hydroxyaryloxy terminal groups by reacting polydiorganosiloxanes containing bis-acyloxy terminal groups with diphenols in a molar ratio of 1:2 to 1:20.

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: The present invention is directed to thermoplastic molding compositions comprising a blend of poly(alkylene terephthalate) and polycarbonate resins characterized in that the weight ratio between said resins is about 1:1 to 4:1 and in that a graft modified polybutadiene rubber is added thereto, said compositions exhibiting an improved level of impact strength.

Abstract: A thermoplastic blend comprising a C.sub.1 -C.sub.4 (alkylene terephthalate), a polycarbonate resin and a butadiene or an acrylate based graft copolymer was found to be amenable without pre-extrusion drying, to thermoplastic processing upon the admixing therewith an additive amount of a polymeric modifier.

Abstract: The present invention relates to polycarbonate molding compositions containing additives of alkali or alkaline earth metal salts, tetrahalogenophthalimides and optional glass fibers, characterized in that they contain additive amounts of bromine.

Abstract: The invention relates to a thermoplastic molding composition comprising a blend of a thermoplastic polyester and a reinforcing amount of a reinforcing agent. An improvement in the impact performance of the composition is disclosed to result upon the incorporation therewith of a blocked (end-capped) polyisocyanate prepolymer.

Abstract: The present invention is directed to molding compositions comprising aromatic, thermoplastic polycarbonate resins at least some molecular chains thereof are characterized in that their terminal groups contain conjugated double bonds. The invention is further directed to a process for the preparation of said compositions.

Abstract: Moulding compositions of polycarbonate, polyalkylene terephthalate and, optionally, polymer having a glass transition temperature below -20.degree. C. may be processed to form particularly low-distortion mouldings when the polycarbonate consists at least partly of o,o,o',o'-tetramethyl-besphenol-polycarbonate.

Abstract: The instant invention relates to a process for the preparation of linear aromatic polycarbonate resins by the known two-phase interfacial process and is directed to the use of perfluoroalkyl sulfonamides as chain stoppers in said process and is further directed to the polycarbonate resins obtainable by the process which resins are suitable in the preparation of thermoplastic molding compositions.

Abstract: A mixture comprising 1. from 70 to 99% by weight of a predominantly aromatic polycarbonate; and 2. from 30 to 1% by weight of a polyolefin graft polymer of (a) 70 to 95% by weight of a graft base consisting of a homopolymer of aliphatic and/or aromatic monoolefins or of a copolymer of these olefins, and up to 50% by weight of other monoolefinically unsaturated, radially polymerizable compounds and/or up to 5% by weight of diolefins, and (b) 5 to 30% by weight of at least one graft-polymerizable vinyl compound, the olefin graft polymers having been obtained by contacting a melt of the graft base (a) with oxygen or an oxygen-containing gas for at most 10 min. with intensive mixing under a pressure of from 1 to 150 bars and at a temperature of from 80.degree. C. to 300.degree. C., adding the vinyl compounds (b) to be grafted on immediately afterwards with intensive mixing in the absence of oxygen or oxygen-containing gas and removing the residual monomers after the graft polymerization reaction.

Abstract: Moulding compositions of aromatic polycarbonate, polyalkylene terephthalate and a certain graft copolymer which may be processed into mouldings characterized by high multiaxial impact strength, exhibit an increased Vicat B-temperature if they contain a low amount of an ethylene homo- or copolymer.

Abstract: The present invention relates to the preparation of aromatic polycarbonates by the known two-phase interface process, from diphenols characterized in that aromatic sulfonanilides are used as chain terminators in amounts of about 2 mol % to 20 mol %, preferably in amounts of about 2.5 mol % to 10 mol %, relative to mols of diphenols employed. In addition, the present invention relates to the aromatic polycarbonates obtainable by the process according to the invention. The products of this invention have been found to have better self extinguishing property compared to polycarbonates without sulfonamide end groups.

Abstract: The present invention relates to mixtures comprising(a) thermoplastic aromatic polycarbonates having Mw (weight average molecular weight) of 10,000 to 200,000, preferably 20,000 to 80,000 (determined by measuring the relative viscosity .eta.rel in CH.sub.2 Cl.sub.2 at 25.degree. C. and a concentration of 0,5 g per 100 ml CH.sub.2 Cl.sub.2(b) thermoplastic polymers of C.sub.1 -C.sub.4 --alkyl methacrylates having Mw (weight average moleculr weight) of 10,000 to 1,000,000 (measured in dimethylformamide at 25.degree. C.) and(c) particulate graft polymers of methyl methacrylate onto a particulate, highly crosslinked alkyl acrylate-rubber which can optionally also contain a crosslinked diene rubber as an inner core, as well as to thermoplastic moulding compositions based on thermoplastic ABS resins or thermoplastic SAN resins which contain the three-component mixture (a)+(b)+(c).

Abstract: A process for the preparation of polycarbonates from diphenols and/or chlorocarbonic acid esters thereof and phosgene by the two-phase boundary process wherein said polycarbonate is reacted with aryl chlorocarbonate is disclosed; the reaction products are noted for their improved ageing and hydrolysis characteristics which render them useful as thermoplastic molding compositions.

Abstract: Copolymers of (a) one or more .alpha.-olefins having the formula (A) ##STR1## wherein R is a C.sub.1 -C.sub.16 alkyl group or a phenyl group; and (b) one or more substituted .alpha.-olefins having the formula (B) ##STR2## wherein R.sup.1 is a hydrogen atom or a methyl group, R.sup.2 is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, and Z is an --OH, --COOH, ##STR3## in which R.sup.3 is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, and each of R.sup.4 and R.sup.5 is a C.sub.1 -C.sub.4 alkyl group, said copolymers having from 1 to 50% by weight of the monomers of formula (B) incorporated therein in polymerized form and a melt flow index (MSI 230/5) of from 2 to 20 g/10 min. and a process for their manufacture.

Abstract: The present invention relates to a process for the isolation of polycarbonates containing 18 to 45 mol % of structural units consisting of sulphone-bisphenols, characterized in that the sulphone-bisphenols are subjected to a polycondensation reaction with oligocarbonates containing chloroformic acid ester end groups, the phases are separated, the organic phase is purified and the sulphone-bisphenol polycarbonates are isolated.

Abstract: The new thermoplastic copolyester carbonates which are based on polybutylene glycols and hexahydrophthalic acid or trimethyladipic acid, as well as admixtures of copolyester carbonates of this type with known polycarbonates are suitable for thermoplastic moulding compositions, particularly where good stability to solvents, such as petrol, is required.

Abstract: Impact improved thermoplastic mixtures of at least partly aromatic polyamides and copolymers of alkadiene with 4-6 C-atoms and acrylonitrile.