General Electric Company

Sabic Global Technologies B.v.

Sabic Innovative Plastics IP B.v.

Vilasagar, Shripathy

Shripathy Vilasagar

Dejin Li

Amit Kulkarni

Robert Edgar Colborn

Albin Peter Berzinis

Vern Lowry

Matthew Hal Littlejohn

Jaykisor Pal

Kevin R Kidder

Keith E Cox

Vijaya K Kuruganti

Amol Adhikrao Mohite

Ke Feng

Satishkumar H Mahanth

David Francis Townsend

Ronald H Place

John R Schroeder

Herbert S Rawlings

Sandeep Dhawan

George H Flowers

Sathya Narayanan

Dane M Ferraris

The present disclosure concerns a bulk polymerization process for the preparation of high heat performance copolymer resins with a reduced amount of oligomer byproduct. The method can comprise isolating oligomer byproduct and introducing the oligomer byproduct into the reactant mixture for the bulk polymerization process.

Continuous process for preparation of high heat resistance copolymers

A polycarbonate composition comprises an elastomer-modified graft copolymer prepared by an emulsion polymerization process in which an elastomer phase is polymerized or copolymerized in the presence of an electrolyte to obtain latex particles that is then grafted with a monomer mixture comprising a monovinylaromatic monomer.

Polycarbonate compositions comprising elastomer-modified graft copolymer prepared by emulsion polymerization

A impact resistant polycarbonate composition comprises an elastomer-modified graft copolymer prepared by an emulsion process in which a composition comprising the elastomer-modified graft copolymer is subjected to treatment with acid to adjust the pH to about 3.0 to about 6.8, following by coagulation of the elastomer-modified graft copolymer and admixture with an aromatic polycarbonate.

Polymer compositions, method of manufacture, and articles formed therefrom

A core-shell particle is formed by a method that includes forming a crosslinked polyorganosiloxane core, reacting a graftlinking agent with the crosslinked polyorganosiloxane core, and polymerizing a poly(alkenyl aromatic) shell around the graftlinking agent-functionalized polyorganosiloxane core. The method produces a core-shell particle with improved adhesion between shell and core. The core-shell particle is useful as an impact modifier in thermoplastic compositions.

Core-shell particle, method, and composition

An emulsion polymerization process for the preparation of polybutadiene grafted with styrene and acrylonitrile monomers in a reaction system is provided. The resultant product has a low end content of unreacted residual monomers, low yellowness index, and improved impact strength. The diene rubber is prepared via a process wherein a chain transfer agent is added on a continuous basis to give a rubber substrate having a low crosslink density. In one embodiment of the invention, the process includes charging the reaction system with a pre-selected diene emulsion with a low crosslink density, adding a first portion of at least one of a styrene monomer and acrylonitrile monomer to the diene emulsion, adding to the reaction system, over a predetermined time, an initiator and a second portion of acrylonitrile and styrene monomer, and polymerizing the catalyzed reaction mixture of diene substrate, styrene and acrylonitrile to form ABS graft polymers. In another embodiment, a third monomer is added after the conversion rate of the monomers is greater than 98%.

Enhanced polymerization process

A thermoplastic blend composition is provided containing an aromatic polycarbonate and a hydroxy functional graft copolymer. The compositions exhibit reduced gloss and are useful as molding resins.

Low gloss polycarbonate blends obtained by using hydroxy functionalized

A thermoplastic blend composition is provided containing an aromatic polycarbonate, a phosphate flame retardant and a hydroxy functional graft copolymer. The compositions exhibit flame retardancy and low gloss and are useful as molding resins.

Low gloss flame-retarded polycarbonate/ABS blends obtained by using

A thermoplastic blend composition is provided containing an aromatic polycarbonate, a graft copolymer and a hydroxy functional rigid polymer such as styrene-acrylonitrilehydroxyalkyl methacrylate terpolymer. The compositions exhibit low gloss and are useful as molding resins.

Low gloss polycarbonate/ABS blends obtained by using a hydroxy

Polymer blends are provided which exhibit reduced surface gloss while maintaining impact and flow properties. The blends comprise an aromatic polycarbonate resin, an acrylonitrile-butadiene-styrene graft copolymer and an ionomeric resin. The blends are useful as molding resins for making molded plastic parts exhibiting reduced surface gloss.

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Parkersburg, WV, United States of America

Shripathy Vilasagar