摘要:
A thermoplastic polycarbonate composition is disclosed, in various embodiments, having enhanced low-temperature ductility, UV resistance and/or fire-retardance characteristics. The composition comprises a polycarbonate, and a combination of an elastomer-modified graft copolymer and a polysiloxane-polycarbonate copolymer. The polycarbonate composition is useful for manufacture of electronic and mechanical parts, among others.
摘要:
This invention disclosed a method for producing 1,2-propylene glycol from bio-based glycerol. In this method, a CuO—CeO2—SiO2 catalyst is filled into a fixed bed reactor, a glycerol solution is flowed into the reactor together with hydrogen gas in a manner of top feeding, and controlling the reaction temperature to be 170˜200° C., the reaction pressure to be 1.0˜5.0 MPa, so as to realize the production of 1,2-propylene glycol from the hydrogenation of glycerol. The catalyst used in this invention can sustain a high selectivity for the target product and a high conversion for glycerol for 500 hours.
摘要:
Routing methods for an integrated circuit design layout are disclosed. The layout can include design netlists and library cells. A multiple-level global routing can generate topological wire for each net. An area oriented graph-based detail routing on the design can be performed. A post route optimization after the detail routing can be performed to further improve the routing quality. Some methods can be single threaded all or some of the time, and/or multi-threaded some or all of the time.
摘要:
A composition is disclosed having a matte surface and high optical transmission characteristics. The composition comprises a polycarbonate and refractive index compatible polymer particles such as crosslinked polystyrene. The polycarbonate composition is useful for manufacture of anti-glare lenses, ATM screens, decorative articles, and housings for electronic appliances such as a computer.
摘要:
Displaying an instant messaging (IM) presence indicator for each of a plurality of devices associated with a first user, wherein the plurality of devices include a first device representing a first type of instant messaging device and second device representing a second type of instant messaging device. Presence information is acquired for the first and second devices. A first device type identifier is associated with a first activation/deactivation flag indicative of whether or not the first device is activated to receive incoming instant messages, and a second device type identifier is associated with a second activation/deactivation flag indicative of whether or not the second device is activated to receive instant messages. The device type identifiers and activation/deactivation flags are transmitted to a third device associated with a second user for display on the third device.
摘要:
A method of fabricating AlGaN/GaN enhancement-mode heterostructure field-effect transistors (HFET) using fluorine-based plasma immersion or ion implantation. The method includes: 1) generating gate patterns; 2) exposing the AlGaN/GaN heterostructure in the gate region to fluorine-based plasma treatment with photoresist as the treatment mask in a self-aligned manner; 3) depositing the gate metal to the plasma treated AlGaN/GaN heterostructure surface; 4) lifting off the metal except the gate electrode; and 5) high temperature post-gate annealing of the sample. This method can be used to shift the threshold voltage of a HFET toward a more positive value, and ultimately convert a depletion-mode HFET to an enhancement-mode HFET (E-HFET).
摘要:
The present invention discloses a nanophase carbon black grafted with organic compounds, comprising (a) a first component: 100 parts by weight of original carbon black particles, and (b) a second component: 5-300 parts by weight of grafting organic compounds having or producing free radicals which is grafted onto the surface of the carbon black, wherein the molecular weight of the grafting organic compounds is 100-10000, and the nanophase carbon black has a particle size of 1-100 nm. The invention also discloses the synthesis thereof and articles therefrom.
摘要:
In one embodiment, the invention is a computing system including a World Wide Web application. The application includes a pick field to receive a partial value. The application automatically transmits the partial value to a server. The server is coupled to a database. The server searches the database to find a complete value corresponding to the partial value. The complete value is transmitted to the application. The complete value replaces the partial value in the pick field.
摘要:
The invention disclosed a method for producing 3-hydroxy-propionate and 1,3-propylene glycol by using epoxide as raw material. In the method, a transitional metal cobalt catalyst and a cocatalyst for the hydroesterification reaction among epoxide, carbon monoxide, and alcohol were chosen, and a hydrogenation catalyst for hydrogenating 3-hydroxy-propionate as well as the corresponding process conditions were selected for producing 3-hydroxy-propionate and 1,3-propylene glycol.
摘要:
A thermoplastic composition comprises a polycarbonate, an acrylonitrile-styrene-acrylate terpolymer, and a low gloss additive, wherein the 60° gloss is measured to be less than or equal to 90 GU according to ASTM D2457. The thermoplastic composition has excellent low gloss performance and mechanical performance. A method of making the thermoplastic composition, and an article comprising the thermoplastic composition are also disclosed.