Abstract: A rosin dispersion is a reaction product of, by dry weight based on total dry weight of the rosin dispersion, from 80% to 98% a rosin resin, and from 2% to 20% a dispersant. The rosin resin is processed by at least one method of a) modification, b) hydrogenation or disproportionation, and c) polymerization or esterification from raw material rosins. The dispersant is selected from C18-C32 aliphatic carboxylic acids, olefin (meth) acrylic acid copolymers, and other acid/anhydride modified polymers. A continuous process for preparing the rosin dispersion and an adhesive formulation comprising the rosin dispersion are also included.

Abstract: The present application provides a method for preparing acetal carbonyl compound used as an intermediate for producing ethylene glycol, which comprises a step in which a raw material acetal and a raw gas carbon monoxide go through a reactor loaded with a catalyst containing an acidic microporous silicoaluminophosphate molecular sieve, for carrying out a carbonylation reaction. In the method of the present invention, the conversion rate of the raw material acetal is high, and the selectivity of acetal carbonylation is high, and the catalyst life is long, and no additional solvent is needed in the reaction process, and the reaction condition is relatively mild, and the process is continuous, showing the potential for industrial application. Moreover, the product of acetal carbonyl compound can be used for producing ethylene glycol by hydrogenation followed by hydrolysis.

Abstract: A method for making a water-based adhesive composition is disclosed. The method comprises dispersing at least one unsaturated monomer and at least one surfactant in an aqueous medium to form an emulsified mixture. The method further comprises introducing at least one initiator to the emulsified mixture, thereby polymerizing the at least one unsaturated monomer and forming an emulsion polymer. The method still further comprises introducing at least one polyol ester of a conjugated acid to the emulsion polymer upon completion of polymerization of the at least one unsaturated monomer. The conjugated acid may be derived from a naturally-occurring dry oil, such as tung oil. There is still further provided a pressure sensitive adhesive comprising the composition prepared according to the disclosed method.

Abstract: A three-dimensional cavitation quantitative imaging method for a microsecond-resolution cavitation spatial-temporal distribution includes steps of: after each wide beam detection, moving an array transducer by one unit; waiting until the cavitation nuclei distribution backs to an initial state, then detecting the cavitation by the wide beam detection with same cavitation energy incitation, so as to obtain a spatial series of two-dimensional cavitation raw radio frequency data corresponding to different placing positions of the array transducer; then changing the cavitation energy source duration, time delays between energy source incitation and the wide beam transmitted by the array transducer, and time delays between the pulsating pump and energy source incitation, so as to obtain a temporal series of two-dimensional cavitation raw radio frequency data; and then obtaining a microsecond-resolution three-dimensional cavitation spatial-temporal distribution image and a cavitation micro bubble concentration quan

Abstract: A solar cell sheet includes: a conductive connection member; and a first electrode, a first transparent conductive layer, a first doped layer of a first conductivity type, a first passivation layer, a monocrystalline silicon wafer, a second passivation layer, a second doped layer of a second conductivity type, a second transparent conductive layer, and a second electrode arranged in an order from top to bottom. One end of the conductive connection member is electrically connected to the first electrode, and the other end of the conductive connection member extends to a side of the second transparent conductive layer adjacent to the second electrode, and the conductive connection member is insulated from the second transparent conductive layer and the second electrode.

Abstract: A method for synthesizing a nano SAPO-34 molecular sieve, and an SAPO-34 molecular sieve catalyst and application thereof. A nano SAPO-34 molecular sieve is synthesized by adding a microporous templating agent and a templating agent having a functionalized organic silane to hydrothermal synthesis. The nano SAPO-34 molecular sieve is calcined to obtain a nano SAPO-34 molecular sieve catalyst. The catalyst can be used in a reaction for preparing low-carbon olefin from an oxygen-containing compound. The nano SAPO-34 molecular sieve obtained by this method has a pure CHA crystal phase. Moreover, the nano SAPO-34 molecular sieve catalyst obtained by this method has good catalytic performance in a MTO reaction, the service life of the catalyst is significantly prolonged, and the selectivity of the low-carbon olefin is improved.

Abstract: A preparation method of a composite electrode on a solar cell is provided. The preparation method of the composite electrode includes the following steps of: depositing a metal contact layer on a cell chip; forming an electrode on the metal contact layer to obtain a composite electrode comprising a metal contact layer and an electrode. A composite electrode on the solar cell and the solar cell are also provided.

Abstract: A wafer supporting apparatus includes: a first fixed plate and a second fixed plate, a first upper fixing rod and a second upper fixing rod, and a lower fixing rod parallel to and below the first upper fixing rod and the second upper fixing rod. Two ends of the first upper fixing rod are fixedly connected to the first fixed plate and the second fixed plate respectively. Two ends of the second upper fixing rod are fixedly connected to the first fixed plate and the second fixed plate respectively. Two ends of the lower fixing rod are fixedly connected to the first fixed plate and the second fixed plate respectively. The first upper fixing rod and the second upper fixing rod are each provided with a plurality of limiting columns each of which including a cylindrical body and a semispherical end.

Abstract: The present invention discloses a preparation method of a heterojunction solar cell and the heterojunction solar cell. The method comprises: providing a substrate; respectively depositing intrinsic layers at two sides of the substrate; respectively depositing n-type doped layers and p-type doped layers on the intrinsic layers at two sides of the substrate, wherein at least two n-type doped layers and/or p-type doped layers are provided, and the doping concentration of each layer of the n-type doped layers and/or the p-type doped layers is gradually increased in a longitudinal direction away from the substrate; and respectively and sequentially forming transparent conductive oxide layers and electrode layers on the n-type doped layers and the p-type doped layers. Therefore, the conversion and production efficiencies of the cell are increased.

Abstract: The present application provides a method for preparing acetal carbonyl compound used as a mediate for producing ethylene glycol, which comprises a step in which a raw material acetal and a raw gas carbon monoxide go through a reactor loaded with a catalyst containing an acidic microporous silicoaluminophosphate molecular sieve, for carrying out a carbonylation reaction. In the method of the present invention, the conversion rate of the raw material acetal is high, and the selectivity of acetal carbonylation is high, and the catalyst life is long, and no additional solvent is needed in the reaction process, and the reaction condition is relatively mild, and the process is continuous, showing the potential for industrial application. Moreover, the product of acetal carbonyl compound can be used for producing ethylene glycol by hydrogenation followed by hydrolysis.

Abstract: The present invention provides a curable aqueous composition comprising a (co)polymer and an epoxy crosslinker. The (co)polymer comprises, as (co)polymerized units, from 0.05% to 10% by dry weight, based on total monomers of the (co)polymer, ethylenically unsaturated acidic monomers having at least two carboxylic acid groups, and the epoxy crosslinker is an aliphatic compound having at least two reactive oxirane groups. It further provides a method for forming a treated substrate and a substrate formed by the method.

Abstract: Methods, systems, and apparatus for optical communications are provided. One of the apparatus includes a first Faraday rotator having an applied magnetic field in a first direction; a second Faraday rotator optically coupled to the first Faraday rotator, the second Faraday rotator having an applied magnetic field in a second direction in opposition to the first direction; and a mirror optically coupled to the second Faraday rotator.

Abstract: A preparation method for a metal-modified SAPO molecular sieve is disclosed, characterized in adding a raw powder of the SAPO molecular sieve to a solution containing metal ions for performing ion exchange, and then washing and drying the obtained solid after ion exchange, so as to obtain the metal-modified SAPO molecular sieve. The metal-modified SAPO molecular sieve prepared has a relatively high degree of crystallinity, and the metal elements occupy the ionic positions in the channels and/or cages of the SAPO molecular sieve, and the metal-modified SAPO molecular sieve shows excellent catalytic performance in the catalytic reaction.

Abstract: A rosin dispersion is a reaction product of, by dry weight based on total dry weight of the rosin dispersion, from 80% to 98% a rosin resin, and from 2% to 20% a dispersant. The rosin resin is processed by at least one method of a) modification, b) hydrogenation or disproportionation, and c) polymerization or esterification from raw material rosins. The dispersant is selected from C18-C32 aliphatic carboxylic acids, olefin (meth) acrylic acid copolymers, and other acid/anhydride modified polymers. A continuous process for preparing the rosin dispersion and an adhesive formulation comprising the rosin dispersion are also included.

Abstract: Provided is an aqueous adhesive composition comprising a polymer that comprises (a) polymerized units of one or more alkyl (meth)acrylate monomer, (b) polymerized units of acrylic acid or methacrylic acid or a mixture thereof, (c) polymerized units of one or more dialkyl diester of itaconic acid, and (d)polymerized units of one or more other monomer.

Abstract: Provided is an method for bonding substrates together using an aqueous adhesive composition comprising a polymer that comprises (a) polymerized units of one or more alkyl (meth)acrylate monomer, (b) polymerized units of acrylic acid or methacrylic acid or a mixture thereof, (c) polymerized units of one or more dialkyl diester of itaconic acid, and (d)polymerized units of one or more other monomer.

Abstract: A three-dimensional cavitation quantitative imaging method for a microsecond-resolution cavitation spatial-temporal distribution includes steps of: after each wide beam detection, moving an array transducer by one unit; waiting until the cavitation nuclei distribution backs to an initial state, then detecting the cavitation by the wide beam detection with same cavitation energy incitation, so as to obtain a spatial series of two-dimensional cavitation raw radio frequency data corresponding to different placing positions of the array transducer; then changing the cavitation energy source duration, time delays between energy source incitation and the wide beam transmitted by the array transducer, and time delays between the pulsating pump and energy source incitation, so as to obtain a temporal series of two-dimensional cavitation raw radio frequency data; and then obtaining a microsecond-resolution three-dimensional cavitation spatial-temporal distribution image and a cavitation micro bubble concentration quan

Abstract: Provided is a Beta molecular sieve having multi-level channels and synthesis method thereof. The molecular sieve has a two-level mesoporous structure and uses polyquaternium-6, polyquaternium-7, polyquaternium-22, or polyquaternium-39 as a guiding agent for both micropores and mesopores during the process of synthesis. The present invention uses cheap raw materials and a simple synthesis method, and has broad industrial application prospect.

Abstract: A curable aqueous composition, a method for forming a treated substrate with the curable aqueous composition, and the substrate so treated are provided. The composition, the method and the treated substrate may be free from formaldehyde. The composition comprises a (co)polymer and a crosslinker, said (co)polymer comprising, as (co)polymerized units, from 0.05 to 10 wt %, based on the dry weight of the composition, ethylenically unsaturated monomer having at least two carboxylic acid groups, wherein the crosslinker having at least two hydrazino groups having a molar ratio of at least 0.05 of the carboxylic acid group, and wherein the aqueous composition is curable at a temperature of from 100° C. to 250° C.

Abstract: Methods, systems, and apparatus for optical communications are provided. One of the apparatus includes a first Faraday rotator having an applied magnetic field in a first direction; a second Faraday rotator optically coupled to the first Faraday rotator, the second Faraday rotator having an applied magnetic field in a second direction in opposition to the first direction; and a mirror optically coupled to the second Faraday rotator.