Abstract: The present invention is in related to a method for recycling a waste polyester material, more particularly to a method for recycling the waste polyester material through a chemical way to produce DMT. It belongs to the technical field of recycling and utilization of waste polyester materials. The present invention adopts the technology of continuous feeding and continuous alcoholysis, so that the material undergoes homogeneous alcoholysis in a melting state, and the required alcoholysis time is short. Two or more alcoholysis tanks are used in series for continuous alcoholysis. The product quality is stable. At the same time, due to the optimization of the amount of EG in the alcoholysis process, distillation and concentration are not required after the alcoholysis step is completed. The alcoholysis product is directly entered into the transesterification tank for the transesterification reaction, and pure DMT products can then be generated.

Abstract: Photocurable compositions that combine redox-active semiconducting organic polymers with photocurable organic molecules are provided. Upon exposure to radiation, the photocurable compositions form ion-permeable, electrically conductive crosslinked organic films that can be used as conducting channels in n-channel or p-channel organic electrochemical transistors, including vertical organic electrochemical transistors (vOECTs). The vOECTs can be incorporated in complementary electronic circuits.

Abstract: A novel device for deacidifying, reinforcing and strengthening ancient books is provided. The device includes a double-open front door, a fan set, a dehumidifier, a vacuum pump, a light, a middle partition, a gas pipe hole, a rear panel, an ultrasonic atomizer, a gas pipe and a pulley track. The double-open front door is provided on one side face of the device. The middle partition divides the device into an upper part and a lower part, bottom faces of the upper part and the lower part are each provided with the fan set. The dehumidifier, the vacuum pump and the ultrasonic atomizer are arranged at an external surface of the rear panel opposite the double-open front door. The gas pipe locates at and runs through an upper part of the middle partition, and that section of the gas pipe is provided with the gas pipe hole The gas pipe is connected with the ultrasonic atomizer.

Abstract: The invention relates to the field of pharmaceutical synthesis, in particular to a preparation method of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol derivatives and their intermediates. The preparation method is carried out starting from compound Formula A1. In the preparation of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol derivatives, the chirality was constructed by enzymatic method, and the products were prepared with high optical purity. The preparation method can be used to produce the key intermediates of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol of darunavir commercially, which is a very economical route suitable for industrial production.

Abstract: A novel heater is disclosed for a temperature sensitive actuator. The heater is a polymeric positive temperature coefficient (PPTC) device consisting of conductive filler and semi-crystalline polymer. The PPTC heater is strategically designed to have a predetermined self-regulation temperature suited to whatever application utilizes the heater. Physical characteristics of the PPTC heater, such as gap width and thickness, enable the current flow through the heater to be strategically controlled.

Abstract: A novel heater is disclosed for a temperature sensitive actuator. The heater is a polymeric positive temperature coefficient (PPTC) device consisting of conductive filler and semi-crystalline polymer. The PPTC heater is strategically designed to have a predetermined self-regulation temperature suited to whatever application utilizes the heater. Physical characteristics of the PPTC heater, such as gap width and thickness, enable the current flow through the heater to be strategically controlled.

Abstract: A novel method for strengthening and reinforcing ancient books is provided. Such treatment method comprises: first placing the ancient books to be treated in a closed strengthening and reinforcing device; after sealing, performing dehumidification operation and vacuumizing operation on system in sequence to maintain the system dry; and after the system is stable under negative pressure, turning on a fan set, directly delivering a strengthening and reinforcing powder to the strengthening and reinforcing device via a gas pipe, or atomizing a strengthening and reinforcing solution through a ultrasonic atomizer and then delivering the atomized solution to the strengthening and reinforcing device via the gas pipe, so that the ancient books to be treated absorb the strengthening and reinforcing agent sufficiently and evenly; and meanwhile monitoring pH value and humidity of the ancient books, thereby implementing strengthening and reinforcement of the ancient books.

Abstract: A auxiliary device for bonding a casing and magnets, comprising a press (10) and a housing positioning seat (2), the press (10) including a press block (12). A vertically arranged raising and lowering rod (3) is provided below the press block (12), the raising and lowering rod (3) being supported on the housing positioning seat (2) by means of an elastic piece. A plurality of push plates (4) are provided on the circumferential side of the raising and lowering rod (3), the push plates (4) being slidingly mated on the housing positioning seat (2) along the radial direction of the raising and lowering rod (3). The raising and lowering rod (3) moves up and down in order to cause the push plates (4) to move in the radial direction of the raising and lowering rod (3), and the sides of the push plates (4) away from the raising and lowering rod (3) are provided with contact faces used to make contact with magnets.

Abstract: A novel heater is disclosed for a temperature sensitive actuator. The heater is a polymeric positive temperature coefficient (PPTC) device consisting of conductive filler and semi-crystalline polymer. The PPTC heater is strategically designed to have a predetermined self-regulation temperature suited to whatever application utilizes the heater. Physical characteristics of the PPTC heater, such as gap width and thickness, enable the current flow through the heater to be strategically controlled.

Abstract: A polymeric positive temperature coefficient (PPTC) tank heater features a first conductive region, a heater body, and a second conductive region, forming a sandwich. The first conductive region includes a first conductive surface connected to a first lead and a second conductive surface connected to a second lead. The heater body is a PPTC polymer matrix including a conductive filler and a semi-crystalline polymer. The sandwich includes multiple heating elements connected in series and each heating element supplies a different resistance.

Abstract: An expandable medical balloon including an inner layer formed of a poly (ether-block-amide) copolymer and an outer layer formed of a polyamide, the expandable medical balloon having a burst strength of greater than 50,000 psi, and to methods of making and using the same.

Abstract: Disclosed is a catalyst component for olefin polymerization. The catalyst component comprises magnesium, titanium, halogen and an internal electron donor. The internal electron donor includes an imine compound with a ketone group as shown in Formula I. Disclosed further is a method of preparing the catalyst component, and a catalyst for olefin polymerization containing the catalyst component. When the catalyst is used in olefin polymerization reaction especially propene polymerization reaction, the catalyst has a high activity and a long term activity and good hydrogen response, and the obtained polymer has characteristics of an adjustable isotactic index and a relatively wide molecular weight distribution.

Abstract: A temperature sensing tape including a flexible, electrically insulating substrate, a plurality of temperature sensing elements disposed on the substrate, each temperature sensing element including a first electrode and a second electrode arranged in a confronting, spaced-apart relationship to define a gap therebetween, and a variable resistance material disposed within the gap and connecting the first electrode to the second electrode, wherein the first electrode of at least one of the temperature sensing elements is connected to the second electrode of an adjacent temperature sensing element by a flexible electrical conductor.

Abstract: A uricase gel preparation for external use comprises the following components by weight: greater than 0 and less than or equal to 1.0% of uricase, 0.05-20% of an aqueous gel matrix, 0.15-20% of a protein protectant, 2-25% of a humectant, 0.01-0.20% of a chelating agent, 0.001-3.0% of a transdermal enhancer, 0.005-0.5% of a preservative and the balance of water for injection. The pH of the preparation is adjusted to 5-10 by a pH adjuster. The method for preparing the gel preparation comprises: preparing a standby substance from some of the components; respectively formulating each of the remaining components with a water for injection; adding the preservative into the standby substance and adjusting the pH; adding the protein protectant, uricase and water for injection; stirring uniformly same and then subpackaging same to obtain the gel preparation.

Abstract: A temperature sensing tape including a flexible, electrically insulating substrate, a plurality of temperature sensing elements disposed on the substrate, each temperature sensing element including a first electrode and a second electrode arranged in a confronting, spaced-apart relationship to define a gap therebetween, and a variable resistance material disposed within the gap and connecting the first electrode to the second electrode, wherein the first electrode of at least one of the temperature sensing elements is connected to the second electrode of an adjacent temperature sensing element by a flexible electrical conductor.

Abstract: A novel polymer positive temperature coefficient (PPTC) material, device, and method of fabrication. One example of polymer positive temperature coefficient (PPTC) includes a polymer matrix, the polymer matrix comprising a first polymer. The PPTC material may further include a conductive filler, disposed in the polymer matrix; and at least one polymer filler, dispersed within the polymer matrix. The at least one polymer filler may comprise a second polymer, different from the first polymer, wherein the at least one polymer comprises a first melting temperature, and wherein the second polymer comprises a second melting temperature, the second melting temperature exceeding the first melting temperature by at least 20 C.

Abstract: A method for depositing a metal layer on a wafer is disclosed. A PVD chamber is provide having therein a wafer chuck for holding a wafer to be processed, a target situated above the wafer chuck, a magnet positioned on a backside of the target, and a DC power supply for supplying a DC voltage to the target. The target is a metal or a metal alloy having ferromagnetism property. A paste process is performed to the PVD chamber. The paste process includes sequential steps of: admitting a working gas into the PVD chamber; and igniting the working gas in cascade stages. The wafer is then loaded into the PVD chamber and positioned onto the wafer chuck. A deposition process is then performed to deposit a metal layer sputtered from the target onto the wafer.

Abstract: The present invention relates to a polymer voltage-dependent resistor (PVDR) in various physical forms and methods for manufacturing the varistor. The body of the PVDR is composed of a polymer matrix having a filler composed of doped zinc oxide particles, other semi conductive particles or metal particles uniformly distributed therein. Conductive electrodes may be affixed to the polymer matrix and electrical leads attached to the electrodes.