Sabic Global Technologies B.v.

Sabic Innovative Plastics IP B.v.

Shpp Global Technologies B.v.

Thomas L Evans

Paul Dean Sybert

Jean-Francois Morizur

James Franklin Hoover

Amanda Marie Flores

Peter Johnson

Christopher Luke Hein

Andrew S Frazee

Johannes De Brouwer

Hatem Abdallah Belfadhel

Jon Michael Malinoski

Paulus Johannes Maria Eijsbouts

Jos Arie Van Den Bogerd

Peter Anthony DiMattia

Robert Dirk Van De Grampel

Theodorus L Hoeks

Viswanathan Kalyanaraman

Chiel Albertus Leenders

Yaming Niu

Laura G Schultz Hume

Jordi Calveras

Devendra Bajaj

Erik Schwartz

Marcel Vieveen

Christian Wold

Eric Brander

Mark John Armstrong

Laura G Shultz Hume

James Francklin Hoover

Ceramic-polymer powders comprising a plurality of core-shell particles, where: each of the core-shell particles comprises a core and a shell around the core; the core comprises a ceramic selected from the group of ceramics consisting of: AlO, FeO, ZnO, ZrO, and SiO; and the shell comprises a polymer selected from the group of polymers consisting of: PC copolymers, polyetherimide (PEI), polyetherimide (PEI) copolymers, polyphenyl sulfone (PPSU), polyarylethersulfone (PAES), and poly ether sulfones (PES). In powder form, the core-shell particles are in a substantially dry powder form having a moisture content of less than 2% by weight.

Polymer-ceramic core-shell particle powders, and processes for making and articles comprising such powders

Described herein are cold-sintered ceramic polymer composites and processes for making them from ceramic precursor materials and monomers and/or oligomers. The cold sintering process and wide variety of monomers permit the incorporation of diverse polymeric materials into the ceramic.

Ceramic-polymer composites obtained by cold sintering process using a reactive monomer approach

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

Provided herein are high flow and ductile thermoplastic resin compositions for the formation of thin wall articles and articles with desirable impact strengths. These compositions are useful in the manufacture of various shaped, formed and/or molded articles.

Device with protective cover

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.

Compositions and articles of manufacture containing branched polycarbonate

In one embodiment, a light emitting device includes a lighting element located in a housing, wherein the housing is formed from a plastic composition including, for example, a polycarbonate formed from reacting, in the presence of a transesterification catalyst, a diaryl carbonate ester and a bisphenol A, wherein the bisphenol A has a sulfur concentration of 1 ppm to 15 ppm, based upon a weight of the bisphenol A; and a conversion material wherein the conversion material includes an inorganic material that converts radiation of a certain wavelength and re-emits of a different wavelength; wherein after the conversion material has been exposed to an excitation source, the conversion material has a luminescence lifetime of less than 10seconds when the excitation source is removed.

Plastic composition comprising a polycarbonate made from low sulfur bisphenol A, and articles made therefrom

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

Methods for screening molecules or moieties for their ability to crosslink are disclosed. An aromatic carbonate, aromatic ester, or aliphatic ester group is attached to the molecule to mimic the presence of a polymer. A solution of the modified molecule is irradiated, and the first-order kinetic rate constant is measured. If the rate constant is high enough or a threshold amount of the molecule is consumed, a polymer is synthesized using the molecule/moiety as an endcap or co-monomer. The polymer is irradiated, and the increase in crosslink density and the gel formation percentage are determined. These parameters, if high enough, indicate the suitability of the molecule/moiety to act as a crosslinking agent, particularly for polycarbonates. Alternatively, the molecule/moiety may be identified as suitable solely by its first-order kinetic rate constant.

Methods of identifying crosslinking molecules for polymers

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

In one embodiment, a device can comprise: a light emitting diode located in a housing. The housing is formed from a polymer composition comprising: a polymer material, wherein the polymer material comprises at least one of polyolefins, polyesters, cyanoacrylate, cellulose triacetate, ethyl vinyl acetate, propyl vinyl acetate, polyvinylbutyral, polyvinyl chloride, polycarbonate, polyethylene naphthalate, polyurethane, thermoplastic polyurethane, polyamide, polymethyl methacrylate, polystyrene, cellulose nitrate, and combinations comprising at least one of the foregoing polymer materials; and a coated conversion material wherein the coated conversion material comprises an inorganic material that converts radiation of a certain wavelength and re-emits of a different wavelength. The coated conversion material can have a coating comprising at least one of a silicone oil and amorphous silica and, after the coated conversion material has been exposed to an excitation source, it can have a luminescence lifetime of less than 10seconds when the excitation source is removed.

Light emitting diode device and method for production thereof containing conversion material chemistry

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.

In one embodiment, a light emitting device comprises: a lighting element located in a housing, wherein the housing is formed from a polymer composition comprising: a polymer material; and a coated conversion material. The coated conversion material is selected from a coated conversion material, coated yttrium aluminum garnet (YAG) doped with rare earth elements, coated terbium aluminum garnet doped with rare earth elements, coated silicate (BOSE) doped with rare earth elements; coated nitrido silicates doped with rare earth elements; coated nitride orthosilicate doped with rare earth elements, coated oxonitridoaluminosilicates doped with rare earth elements; as well as combinations comprising at least one of the foregoing. After the coated conversion material has been exposed to an excitation source, the coated conversion material has a luminescence lifetime of less than 10seconds when the excitation source is removed.

Growing community of inventors

Mount Vernon, IN, United States of America

Thomas L Evans