Mobay Chemical Corporation

Mobay Corporation

Bayer Aktiengesellschaft

Mark W Witman

Sivaram Krishnan

Ulrich R Grigo

Gerard E Reinert

Ronald L Price

Winfried Paul

James Y Chung

Hartmut Lower

Nelson R Lazear

Manfred Schmidt

Peter H Markusch

Hans-Jurgen Kress

Werner Nouvertne

Dieter Neuray

Wolfgang Alewelt

Leo Morbitzer

Klaus Kircher

Arthur L Baron

Peter R Muller

Karl-Heinz Kohler

Russell P Carter, Jr

Roger J White

Wolfgang Stix

In C Lim

George R Kriek

Siegfried Storp

Peter H Shu

Wolfgang Siebourg

A molding composition comprising a polycarbonate resin and plating modifier was found to be suitable for preparing metal coated articles where the metal coating is deposited by an electroless process. The plating modifier in accordance with the invention is at least one member selected from the group consisting of a polyanhydride, and a monovinyl aromatic-acrylonitrile copolymer. An advantageous embodiment of the invention includes incorporating in the molding composition a flame retarding amount of a conventional flame retarding agent for polycarbonate compositions.

Article molded from a polycarbonate composition having improved

A moulding composition comprising a polycarbonate resin and an acrylate-based plating modifier was found to be suitable for preparing metal coated articles where the metal coating is deposited by an electroless process. In a preferred embodiment of the invention the moulding composition further comprise a flame retarding agent.

Polycarbonate molding compositions

The present invention is related to polycarbonate molding compositions containing a co-precipitate of a polycarbonate resin and a fluoropolymer. This co-precipitate was found to be suitable as an additive for polycarbonate resins because it offers improved dispersibility with the resin and good flammability performance as well as aesthetic characteristics. The co-precipitate is prepared by first mixing an aqueous dispersion of a fluoropolymer with a polycarbonate solution and then precipitating both using a suitable precipitation agent. After isolation washing and drying the co-precipitate of the invention is suitable for incorporation in a polycarbonate resin optionally with known flame retarding agents. Molded parts prepared from the compositions of the invention are characterized by their improved homogeneity and flame retardance.

Flame retardant polycarbonate compositions

A thermoplastic molding composition comprising a blend of a thermoplastic polyester, a rubber-elastic impact modifying compound and a certain blocked (capped) polyisocyanate prepolymer is disclosed characterized in that it has an improved level of impact strength.

Thermoplastic polyester molding composition having an improved impact

Flame resistant, reinforced thermoplastic molding compositions based on polyethylene terephthalate resins were found to have a lowered tendency to drip during burning upon the addition thereto of a sufficient amount of a particular ionic elastomer. The addition of the drip suppressant in accordance with the invention does not compromise the physical and mechanical properties of the composition.

Flame retardant polyethylene terephthalate compositions

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.

Polydiorganosiloxane/polycarbonate block copolymers

The present invention is directed to a thermoplastic molding composition comprising a blend of an aromatic polycarbonate, a graft copolymer and an impact modifier graft characterized by its properties wherein combined are low gloss and high impact strength.

Polycarbonate blends having low gloss

Thermoplastic moulding compounds obtained from: from 98 to 10 parts, by weight, of aromatic polycarbonates having an average molecular weight M.sub.w (by light scattering) of from 10,000 to 200,000; from 60 to 0 parts, by weight, of polyalkylene terephthalate; from 30 to 0 parts, by weight, of graft polymer of one or more ethylenically unsaturated monomers on a rubber; and from 90 to 2 parts, by weight, of a polyester of terephthalic acid and a diol containing at least one diaryl sulphone group in the molecule and, optionally, an aliphatic diol in addition.

Moulding compositions comprising an aromatic polycarbonate and a sulfone

The present invention relates to thin-walled UV-stabilized polycarbonate mouldings, especially webbed laminate panels and films, made of polydiorganosiloxane/polycarbonate block copolymers.

UV-stabilized polycarbonate mouldings

A molding composition comprising a polycarbonate resin and an impact modifier containing an acrylate or a methacrylate functionality is imparted improved processability and freedom from splay upon the admixing of a certain stabilizer therewith.

Stabilized polycarbonate composition

A thermoplastic compositions comprising an aromatic polycarbonate resin and a copolymer of C.sub.1 -C.sub.18 alkyl acrylate with a hydroxy C.sub.1 -C.sub.18 alkylacrylate is characterized by its improved notched Izod impact strength and critical thickness.

Polycarbonate compositions having improved impact performance

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.

Thermoplastic molding compositions

The present invention is directed to a continuous process for the preparation of copolycarbonates of sulfonyl diphenol (SDP) containing at least about 15, preferably about 15 to about 80 percent by weight of SDP and characterized in the particular system catalyzing the process reaction. The invention thus entails improvements and modifications to the known interfacial polycondensation process rendering it applicable to the preparation of copolycarbonates containing a high level of SDP comprising a combination of catalysts namely a phase transfer catalyst and a condensation catalyst.

Process for the preparation of copolycarbonates of sulfonyl diphenol

The invention relates to thermoplastic aromatic polycarbonates which structural units are characterized by their end groups which are residues of ##STR1## and is predicated on the surprising and unexpected findings that high melt flow polycarbonates of this type are rendered improved impact performance by admixing therewith small amounts of an impact modifier.

Polycarbonate compositions having a high impact strength and melt flow

It is an object of the invention to provide a polycarbonate composition having improved mechanical properties and a process for the preparation of said composition. These objects are achieved in accordance with the present invention which teaches a blend of a polycarbonate resin and an additive amount of an aromatic bis-imide compound. The composition comprising said blend retains a surprising degree of ductility as measured by tensile elongation and yield strength and exhibits an improvement in both tensile strength and flexural modulus.

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New Martinsville, WV, United States of America

Mark W Witman