摘要:
Disclosed is a method for reducing stringiness during hot plate welding of an article comprising a resinous composition which comprises at least one step of contacting with water a surface of the article to be welded. The method also results in improved cycle time for preparation of the final article.
摘要:
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.
摘要:
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.
摘要:
Disclosed are compositions comprising: (i) a rubber modified thermoplastic resin comprising a discontinuous elastomeric phase dispersed in a rigid thermoplastic phase, wherein at least a portion of the rigid thermoplastic phase is grafted to the elastomeric phase, and wherein the elastomeric phase comprises a polymer having structural units derived from at least one (C1-C12)alkyl(meth)acrylate monomer; (ii) a second polymer consisting essentially of structural units derived from at least one (C1-C12)alkyl(meth)acrylate monomer; and optionally (iii) a third polymer comprising structural units derived from at least one alkenyl aromatic monomer and at least one monoethylenically unsaturated nitrile monomer prepared in a separate polymerization step and added to the composition. In other embodiments the present invention comprises articles made from said compositions.
摘要:
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.
摘要:
Disclosed is a method for reducing stringiness during hot plate welding of an article comprising at least one rubber modified thermoplastic resin, which comprises the step of including an effective amount of a polyamide in the composition of the article to be welded; wherein said resin comprises a discontinuous elastomeric phase dispersed in a rigid thermoplastic phase, and wherein at least a portion of the rigid thermoplastic phase is grafted to the elastomeric phase. The method also results in improved cycle time for preparation of the final article. Final articles made by the said method are also disclosed.
摘要:
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%.
摘要:
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.
摘要:
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.
摘要:
Disclosed is a method for reducing stringiness during hot plate welding of an article comprising a resinous composition which comprises at least one step of contacting with water a surface of the article to be welded. The method also results in improved cycle time for preparation of the final article.