12/7/2010
7,847,023
Polysiloxane/polyimide copolymer blends
Gallucci et al of Sabic, Netherlands, has developed a thermoplastic composition comprises a polysiloxane/polyimide block copolymer and a polyester/polyether block copolymer. The polysiloxane/polyimide block copolymer has 5 to 50 weight percent (wt %) polysiloxane, based on the total weight of the polysiloxane/polyimide block copolymer. The polyester/polyether block copolymer has 5 to 30 wt % polyether based on the total weight of the polyester/polyether block copolymer. In some embodiments the polysiloxane/polyimide block copolymer is present in an amount of 75 to 99 wt % and the polyester/polyether block copolymer is present in an amount of 1 to 25 wt %, with the weight percent of the block copolymers based on the combined weight of the two block copolymers.  (RDC 5/12/2011)

7,847,032
Poly(arylene ether) composition and extruded articles derived therefrom
Guo et al of Sabic, Netherlands, have developed a  poly(arylene ether) composition includes a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene, a flame retardant, and a poly(arylene ether)-polysiloxane block copolymer reaction product that itself includes a poly(arylene ether)-polysiloxane block copolymer. The composition is useful for forming extruded articles, including insulation for wire and cable. The poly(arylene ether)-polysiloxane block copolymer contributes improved flame retardancy and, in many cases, improved physical properties to the composition.  (RDC 5/12/2011)

11/23/2010
7,838,604
Method for the production of block copolycarbonate/phosphonates and compositions therefrom
Frietag of FRX Polymers, Massachusetts  has developed block copolycarbonate/phosphonates with excellent combination of flame resistance, hydrolytic stability, high Tg, low melt viscosity, low color and high toughness.  These resins are useful as fibers, films, coated substrates, moldings, foams, adhesives and fiber-reinforced articles.  (RDC 4/12/2011)