Sabic Global Technologies B.v.

Sabic Innovative Plastics IP B.v.

Shpp Global Technologies B.v.

Jean-Francois Morizur

Robert Russell Gallucci

Paul Dean Sybert

James Alan Mahood

Thomas L Evans

James Franklin Hoover

Peter Johnson

Amanda Marie Flores

Derek Lake

Andrew S Frazee

Yaming Niu

Yuanqing He

Sarah E Grieshaber

Kwan Hongladarom

Peter Hendrikus Theodorus Vollenberg

Robert Dirk Van De Grampel

Jian Long Yang

Liang Wen

Zhe Chen

Jordi Calveras

Yuzhen Xu

Swaminathan Shubashree

Miao Shen

Jian Yang

Stephen Dimond

James Francklin Hoover

Articles having improved flame retardance and chemical resistance properties can be made from blends containing a cross-linkable polycarbonate resin having repeating units derived from a dihydroxybenzophenone. Predictive equations can be used to relate properties of the blend and the polycarbonate resin to the final properties of the article, and permit design of articles with desired combinations of properties.

Processes for designing cross-linkable polycarbonates and articles formed therefrom

Polycarbonate blend compositions are disclosed. The compositions include at least one polycarbonate useful for high heat applications. The compositions include at least one poly(aliphatic ester)-polycarbonate. The compositions can include one or more additional polymers. The compositions can include one or more additives. The compositions can be used to prepare articles of manufacture, and in particular, automotive bezels.

High flow, high heat polycarbonate compositions

Thin walled products having good scratch resistance are disclosed, as are processes for making such products (e.g. films, sheets, and thin walled articles). The product includes a thin layer formed from (A) a cross-linkable polycarbonate resin having endcaps derived from a monohydroxybenzophenone; and (B) if desired, a base polymeric resin. When exposed to ultraviolet light, crosslinking will occur in the layer with the cross-linkable polycarbonate resin, enhancing the scratch resistance properties of the thin layer and the overall product.

UV-curable film compositions with improved scratch resistance

Polycarbonate blend compositions are disclosed. The compositions include at least one polycarbonate useful for high heat applications. The compositions include at least one poly(aliphatic ester)-polycarbonate. The compositions can include one or more additional polymers. The compositions can include one or more additives. The compositions can be used to prepare articles of manufacture.

Polycarbonate articles having improved properties due to their substantially cross-linked nature are disclosed. The substantially cross-linked articles are formed by forming a product from a polymeric composition comprising a cross-linkable polycarbonate resin containing a photoactive group derived from a benzophenone, and exposing the formed product to an effective dosage of ultraviolet radiation to cause substantial cross-linking throughout the article. Such cross-linking can also be used to obtain films having good scratch resistance properties.

Substantially crosslinked polycarbonate articles

Crosslinkable polycarbonate resins having improved properties are disclosed. The crosslinkable polycarbonate resins are formed from a reaction of at least a benzophenone, a first dihydroxy chain extender, and a carbonate precursor, and may include a second dihydroxy chain extender as well.

Crosslinkable polycarbonate resins

A thermoplastic composition comprises: 35 to 45 weight percent of a branched, end capped polycarbonate, 55 to 70 weight percent of a poly(aliphatic ester-carbonate) having a weight average molecular weight of 15,000 to 25,000, a non-flourinated sulfonate salt flame retardant and a polysiloxane. Weight percent is based on the combined weight of the branched, end capped polycarbonate and poly(aliphatic ester-carbonate).

Compositions and articles of manufacture containing branched polycarbonate

Polymeric blends having improved flame retardance properties and good ductility at low temperatures are disclosed. The blend is formed from (A) a photoactive additive that is a cross-linkable polycarbonate resin containing a photoactive group derived from a dihydroxybenzophenone; and (B) a polymer resin which is different from the photoactive additive. The additive can be a compound, oligomer, or polymer. When exposed to ultraviolet light, crosslinking will occur between the photoactive additive and the polymer resin, enhancing the chemical resistance and flame retardance while maintaining ductility.

Methods for improving chemical and flame resistance with multi-functional photoactive additives

Processes for increasing the chemical resistance of a surface of a formed article are disclosed. The formed article is produced from a polymeric composition comprising a photoactive additive containing photoactive groups derived from a monofunctional benzophenone. The surface of the formed article is then exposed to ultraviolet light to cause crosslinking of the photoactive additive and produce a crosslinked surface. The crosslinking enhances the chemical resistance of the surface. Various means for controlling the depth of the crosslinking are also discussed.

Processes for enhancing flame retardance and chemical resistance of polymers

A polycarbonate containing composition comprising a peak melt viscosity of at least 8,000 poise when measured using a parallel plate melt rheology test at a heating rate of 10&#xb0; C./min at a temperature of between about 350&#xb0; C. to about 450&#xb0; C., and wherein a molded article of the composition has a UL 94 V0 rating at a thickness of 1.0 mm, 1.5 mm, 2.0 mm, or between 1.0 mm and 2.0 mm is disclosed.

Photoactive additives, such as cross-linkable polycarbonate resins, are disclosed. The additive is formed from the reaction of a monohydroxybenzophenone, a dihydroxybenzophenone, a diol chain extender, and one or more linker moieties having functional groups that react with the phenolic groups on the other ingredients. If desired, a secondary linker moiety and/or an end-capping agent can be used. When added to a base polymeric resin, the photoactive additive permits crosslinking when exposed to ultraviolet light.

Photoactive additives with photoactive monomers and endcaps

Polymeric blends having improved flame retardance properties and good ductility at low temperatures are disclosed. The blend is formed from (A) a photoactive additive containing a photoactive group derived from a monofunctional benzophenone; and (B) a polymer resin which is different from the photoactive additive. The additive can be a compound, oligomer, or polymer. When exposed to ultraviolet light, crosslinking will occur between the photoactive additive and the polymer resin, enhancing the chemical resistance and flame retardance while maintaining ductility.

Blends containing photoactive additive

Processes for increasing the chemical resistance of a surface of a formed product are disclosed. The formed product is produced from a polymeric composition comprising a photoactive additive containing photoactive groups derived from a dihydroxybenzophenone. The surface of the formed product is then exposed to ultraviolet light to cause crosslinking of the photoactive additive and produce a crosslinked surface. The crosslinking enhances the chemical resistance of the surface. Various means for controlling the depth of the crosslinking are also discussed.

Disclosed herein is a composition comprising: a flame retardant comprising a sulfonate salt and three polycarbonates. The first polycarbonate has a branching level of greater than or equal to 2%, a weight average molecular weight of 20,000 g/mole to 55,000 g/mole and a peak melt viscosity of greater than or equal to 25,000 poise. The second polycarbonate has a glass transition temperature greater than or equal to 170&#xb0; C. The third polycarbonate has a branching level of 0 to less than 2% and a molecular weight of 17,000 to 40,000 g/mol. The composition has a heat distortion temperature greater than or equal to 145&#xb0; C., ductility greater than or equal to 90% at 23&#xb0; C., multi-axial impact greater than or equal to 50 Joules per meter (J/m) at 23&#xb0; C., and a molded article of the composition has a UL 94 V0 rating at a thickness of 1.5 mm.

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Evansville, IN, United States of America

Jean-Francois Morizur