Abstract: The present disclosure provides a water-soluble 1,3-diphenylguanidine (DPG)-based supramolecular inclusion complex and a preparation method and use thereof. A supramolecular compound and a vulcanization accelerator DPG are subjected to supramolecular interaction to form a DPG-based supramolecular inclusion complex. While improving water solubility and dispersibility of the DPG, a molecular structure of the DPG can be completely retained, and the supramolecular host used does not affect a performance of latex. The supramolecular compound and the DPG are ball milled in a certain proportion to prepare the DPG-based supramolecular inclusion complex, the water-soluble DPG-based supramolecular inclusion complex is added in a natural latex curing process; and after mixing evenly, a mixture is foamed on-machine, vulcanized in a steamer, and dried to obtain a latex foam product.

Abstract: It is provided an aldehyde-functionalized chitosan and a method of producing same comprising reacting an amine containing polymer such as chitosan and a molecule bearing carboxyl and aldehyde functions in presence of a coupling agent, wherein the aldehyde function attaching to the polymer chain through an amide bond in absence of side reaction products.

Abstract: Chlorella mannogalactan (CM) or a sulfated Chlorella mannogalactan (SCM) compound and application of the SCM compound are disclosed. The CM is obtained by extracting total polysaccharides from Chlorella dry powder before performing separation and purification. The SCM compound is obtained by sulfation modification of the CM. The CM and the SCM compound both consist of mannose, 3-O-methyl-mannose, and galactose. The SCM compound and an excipient thereof form a pharmaceutical composition that can be used as a lyophilized powder injection or an aqueous solution for injection for prevention and/or treatment of thrombotic cardiovascular diseases. The CM or the SCM compound and the application of the SCM compound are adopted. The SCM has good water solubility and strong anticoagulant activity, which can be comparable to enoxaparin sodium.

Abstract: The present invention relates to a process for the preparation of a composition of organic peroxides comprising the mixture of at least one peroxydicarbonate and of at least one peroxyester, preferably at least one hydroxyperoxyester; said composition being prepared before being brought into contact with one or more monomers comprising ethylenic unsaturations, preferably one or more halogenated vinyl monomers, and more preferentially vinyl chloride. The invention also relates to a process for the polymerization of one or more ethylenically unsaturated monomers successively comprising the preparation of the composition, as defined above, and bringing said composition into contact with one or more ethylenically unsaturated monomers.

Abstract: The present invention relates to a process for reducing volatiles in a polymer melt feed. The present invention also relates to a devolatilization apparatus for removing volatiles from a polymer melt feed.

Abstract: The disclosure relates to process for polymerising olefins, the process comprising polymerising ethylene, optionally in the presence of at least one other alpha olefin comonomer, preferably C4-C10 alpha olefin comonomer, preferably in a multi-stage polymerisation configuration, in the presence of a single-site polymerisation catalyst to produce a polymer component; to produce a polyethylene polymer or a polyethylene copolymer having a particle size distribution of the resulting a polyethylene polymer powder or a polyethylene copolymer powder described by a lognormal distribution having a scale parameter less than 0.5, preferably less than 0.45, in particular from 0.1 to 0.45, more preferably from 0.15 to 0.4.

Abstract: In an embodiment, the present disclosure pertains to a method of changing the glass transition temperature of a polymer. In some embodiments, the polymer includes at least one hydrazone-containing compound. In general, the methods of the present disclosure include one or more of the following steps of: (1) applying light to the polymer; and (2) thereby changing the glass transition temperature of the polymer. In another embodiment, the present disclosure pertains to a polymer having a light-adjustable glass transition temperature. In some embodiments, the polymer includes at least one hydrazone-containing compound.

Abstract: An object of the present invention is to provide a resin composition which has excellent photocurability for various active energy rays, in particular, an active energy ray including an h-line at a wavelength of 405 nm, without inhibiting photocuring reaction in an exposure step, and can confer excellent alkaline developability in a development step, when used in the fabrication of a multilayer printed wiring board; and a resin sheet, a multilayer printed wiring board, and a semiconductor device.

Abstract: Embodiments disclosed herein relate to the production of polypropylene. A propylene stream comprising propane is fed to a gas-phase polymerization zone. Propylene is reacted in the gas phase polymerization zone to produce a polymerization product. A recycle gas stream from the gas-phase polymerization zone is fed to a heat exchanger to remove heat of the polymerization reaction, forming a first cooled gas stream, which is recycled to the gas-phase polymerization zone, and a second cooled gas stream from the heat exchanger is fed to a first separation system, forming a propane rich stream and a second propylene stream. The first separation system is operated by a heat pump configured to compress the second propylene stream to form an at least partially condensed propylene stream. A liquid portion and optionally a vapor portion of the at least partially condensed propylene stream are fed to the gas-phase polymerization zone.

Abstract: The present application relates generally to tubes, such as thin walled catheter liners with small wall thicknesses (e.g., less than 1 mm), including crosslinked fluoropolymers, e.g., crosslinked poly(tetrafluoroethylene). The disclosure further provides methods of manufacturing such tubes and systems for manufacturing such tubes.

Abstract: The invention relates to a rubber composition which comprises a reinforcing filler, a crosslinking system and more than 50 to 100 phr of an elastomer which is a copolymer of ethylene and of a 1,3-diene CH2?CR—CH?CH2, the symbol R representing a hydrocarbon chain having from 3 to 20 carbon atoms. The rubber composition has a good compromise between the stiffness and hysteresis properties.

Abstract: A ligand compound represented by the following Formula 1, which shows high catalyst activity and high selectivity to 1-hexene and 1-octene, and may perform ethylene oligomerization with excellent efficiency, an organochromium compound, a catalyst composition comprising the organochromium compound and a method for oligomerizing ethylene using the same, are described: wherein all the variables are described herein.

Abstract: The present disclosure relates to a metallocene-catalysed multimodal polyethylene copolymer, and to use of the multimodal copolymer of ethylene in film applications, and to a film including a polymer composition of the disclosure.

Abstract: In at least one embodiment, a process to produce a poly alpha-olefin (PAO) includes introducing a first alpha-olefin to a first catalyst system comprising activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions to form a first reactor effluent. The first alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more. The first reactor effluent includes at least 60 wt % of PAO dimer and 40 wt % or less of higher oligomers, where the higher oligomers are oligomers that have a degree of polymerization of 3 or more. The process includes introducing the first reactor effluent and a second alpha-olefin to a second catalyst composition including an acid catalyst in a second reactor to form a second reactor effluent comprising PAO trimer.

Abstract: The present disclosure relates to a hydrophilic polymer and a method for preparing the same. The hydrophilic polymer is characterized in that it is a copolymer of a conjugated diene, a monoolefin and a hydrophilic monomer represented by Formula I. In the Formula I, X1, X2 and X3 are each independently selected from hydrogen atoms, or a linear or branched alkyl with 1-4 carbon atoms. At least one of R1, R2 and R3 is hydrophilic group; and the others are each independently selected from hydrogen atoms or, an alkyl or alkoxy with 1-4 carbon atoms.

Abstract: Co-cured blends of fluoroelastomers of tetrafluoroethylene-propylene copolymer with cure site monomer and a pentapolymer of vinylidene fluoride (VDF), hexafluoropropylene (HFP), tetrafluoroethylene (TFE), perfluorinated methyl vinyl ether (PMVE) and ethylene (PE) with peroxide as initiator and coagent TAIC as crosslinker show improved curing performance, improved mechanical properties and improved compression set as well. The co-cured fluoroelastomers show improved chemical resistance to the solvent aging systems and better retention of mechanical properties after aging at high temperature in the solvents system.

Abstract: Hollow polymer particles comprising a polymer containing a vinylic monomer unit and a phosphate ester monomer unit, the hollow polymer particles having a volume average particle diameter of 0.5 to 1000 ?m.

Abstract: Disclosed is a polymer composition comprising a) a matrix comprising an elastomeric polymer; b) a plurality of plastic crystals dispersed within the matrix to form a three-dimensional interconnected phase of plastic crystals, and wherein the polymer composition exhibits an ionic conductivity of at least about 1.1 mS/cm at about 20° C. Also disclosed herein are electrochemical cells comprising the same and methods of making and using the same.

Abstract: A copolymer and a dispersion using same, the copolymer including two or more monomers selected from among a monomer containing two or more substituted or unsubstituted aromatic rings, a monomer containing a straight-chain or branched aliphatic hydrocarbon having 5 to 22 carbon atoms, and a polar monomer containing any one selected from the group consisting of cyano (CN), pyrrolidone (NC4H6O) and carboxylic acid (COOH).

Abstract: A curable resin composition that is capable of forming a cured product having impact resistance and a high elastic modulus, and has a low viscosity, thereby being suitable for three-dimensional shaping. The curable resin composition contains: (A) an ?-(unsaturated alkoxyalkyl)acrylic acid or an ester thereof; (B) a bifunctional radically polymerizable oligomer; optionally (C) a radically polymerizable compound other than the component (A) and the component (B); (D) rubber particles; and (E) a radical polymerization initiator, wherein the component (A) is represented by the following formula (1).

Abstract: In one or more embodiments, the present invention provides a bottlebrush polymer for use with implantable synthetic intraocular lenses comprising a homopolymer or copolymer of a high reflective index methacrylate monomer or macromolecule such as monomethacryloxypropyl terminated polydimethylsiloxane, asymmetric (PDMS-MA), 2,2,2-trifluoroethyl methacrylate (TFEMA), oligo(ethylene glycol) methacrylate (OEGMA), 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl methacrylate (HDFDMA), benzyl methacrylate (BzMA), 2-[3-(2H-Benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate (BzTAzMA), ethyleneglycol phenylether methacrylate (EGPhEMA), hydroxyethyl methacrylate (HEMA), or a combinations thereof having a refractive index and viscosity suitable for use as a filling material for implantable synthetic intraocular lenses.

Abstract: A free-radically polymerizable copolymer comprising divalent monomeric units: a); b); and optionally c). Each R1 independently represents an alkyl group having from 1 to 8 carbon atoms. R2 represents H or a methyl group. Z represents an alkylene group having 2 to 12 carbon atoms. X? represents a non-interfering anion. Free-radically polymerizable compositions containing the same are also disclosed as well as the corresponding polymerized compositions.

Abstract: A composite material obtained by impregnating a fibrous filler to which a hydrocarbon-based resin is attached with a polymerizable composition containing a cycloolefin monomer and a metathesis polymerization catalyst is provided. According to the present invention, it is possible to provide a composite material which has no impregnation unevenness and can give a composite material molded article having excellent strength.

Abstract: An example of a bottlebrush polymer has a polymer backbone and a plurality of individual brush moieties bonded to the polymer backbone. The individual brush moieties respectively include a crosslinked oxyamine moiety, a hydrophilic segment, and a surface adhesive terminal group.

Abstract: The present invention relates to the use of multiblock copolymer compositions as sacrificial materials for 3D fused deposition modeling.

Abstract: Provided is a thermosetting resin composition capable of achieving both thermal conductivity and dielectric breakdown resistance at high levels and forming a cured product with a surface having high smoothness. In a thermosetting resin composition, a thermosetting resin, a thermally conductive filler, a rheology modifier, and a wet dispersant are mixed to be solvent-free, and a thixotropic index at 25° C. is adjusted to 0.9 or more and less than 1.0.

Abstract: An elastic antibacterial polyurethane polymer and a method for preparing the same. The polyurethane polymer has excellent antibacterial properties, mechanical properties, and heat resistance and durability. Specifically, the elastic antibacterial polyurethane of the includes a unit(s) derived from (A) an isocyanate compound; and (B) a polyol comprising a polyether glycol and a diol represented by the disclosed Chemical Formula 1, wherein the (B) polyol comprises 0.01 to 40 mol % of the diol represented by Chemical Formula 1.

Abstract: Provided is a two-pack type urethane molding material for optical lenses including a main agent containing an isocyanate-terminated prepolymer which is an intermediate product of a polyurethane production reaction by an alicyclic diisocyanate and a polyhydroxy compound; and a curing agent containing an aromatic diamine of dimethylthiotoluenediamine (DMTDA), diethyltoluenediamine (DETDA) or a mixture of these. Also, a polyurethane resin optical lens is provided which is constituted by a cast molded body using the two-pack type urethane molding material.

Abstract: This invention relates to chemical polymer compositions, methods of synthesis, and fabrication methods for devices regarding polymers capable of displaying shape memory behavior (SMPs) and which can first be polymerized to a linear or branched polymeric structure, having thermoplastic properties, subsequently processed into a device through processes typical of polymer melts, solutions, and dispersions and then crossed linked to a shape memory thermoset polymer retaining the processed shape.

Abstract: A composition includes a first component containing at least one polyaspartic acid ester (P1-1) and optionally a polyaspartic acid ester (P1-2) and a mixture of various polyetheraspartic acid esters (P2), and of a second component containing at least one aliphatic polyisocyanate (B1) and at least one isocyanate prepolymer (B2). The composition is particularly suitable as a cover coating composition. Said composition has a good adhesion on polyurea and polyurethane membranes, in particular roof membranes, and has drying times of less than 120 min, an elongation at break of 80-200% and a tensile strength of more than 6 N/mm2.

Abstract: The present invention relates to the field of bioresorbable crosslinked materials. More specifically, the present invention pertains to a combination comprising a polyester having a crystalline backbone and at least one end-capping group attached to a first crosslinkable group and a compound comprising a second crosslinkable group, a crosslinked polyester wherein said combination forms a crosslinked network, a process of manufacturing thereof and the use of said crosslinked polyester.

Abstract: The present invention provides a blocked polyisocyanate composition containing blocked polyisocyanate component (A) and blocked polyisocyanate component (B), wherein when a nonionic hydrophilic group content of blocked polyisocyanate component (A) is represented by (a) mass % and a nonionic hydrophilic group content of blocked polyisocyanate component (B) is represented by (b) mass %, a relationship of 0?(b)<(a) is satisfied.

Abstract: A polyurethane contains a phenolic hydroxyl group represented by the following general formula (1A). Thus, the present invention provides: a conductive paste composition for forming a stretchable conductive wire which varies slightly in electric conductivity at the time of elongation and shrinkage; and a polyurethane providing the composition.

Abstract: A method of forming a biomass epoxy resin composition includes mixing 100 parts by weight of biomass 2,5-furandicarboxylic acid, 900 to 1100 parts by weight of epihalohydrin, and a catalyst to form a mixture. The method includes heating the mixture to 80° C. to 95° C. to react for 2 to 5 hours to form a ring-opening intermediate product, and adding an alkaline for ring closing the ring-opening intermediate product to form the biomass epoxy resin composition, wherein the catalyst includes 0.8 to 8 parts by weight of triphenyl phosphine and 0.01 to 0.1 parts by weight of 4-methoxyphenol.

Abstract: The present teachings contemplate a method that includes a step of providing a first amount of esterified reaction product of an acid and an epoxy-based material. The esterified reaction product may be further reacted an epoxy resin to form a polymeric epoxy. The resulting material may have a generally linear backbone, foaming and curing capability and flame retardant properties.

Abstract: A curable composition and a method of making a cured composition are provided. The curable composition contains at least two parts with the first part containing three different types of curing agents that contain multiple —NHR1 groups (R1 is hydrogen, alkyl, aryl, aralkyl, or alkaryl) and with the second part containing an epoxy resin. The first part composition and the second part compositions are selected to control the rheology of the curable composition both before and after combination of the first part with the second part.

Abstract: A method prepares polymeric material including polyester recycled by chemical recycling technology by glycolysis from waste, purification and subsequent repolymerization, to obtain a purified product with chemical-physical-mechanical features equal to virgin plastic material. The method includes providing raw material in the form of flakes for a glycolysis process obtained through a pre-treatment process of dirty post-consumer plastic of polyesters. Chemical depolymerization reacts by glycolysis to obtain a mixture defined “glycolysis product” based on the intermediate Bis-2-hydroxyethyl terephthalate and low-molecular-weight small oligomers. Purification of the glycolysis product uses ion exchange resins and adsorbents for removing contaminants and color and subsequent recovery of pigments separated from the plastic and subsequent evaporation and concentration reactions to obtain the pure BHET monomer, intermediate of PET production.

Abstract: Provided is a method for preparing a polylactic acid polymer that has a desired high molecular weight by performing a ring-opening polymerization reaction of lactide in the presence of a SnHPO3 catalyst to prepare the polylactic acid polymer. The method exhibits excellent activity without decomposing the SnHPO3 catalyst even when the polymerization reaction proceeds at high temperature.

Abstract: According to the present invention, there can be provided a thermoplastic resin comprising a constituent unit (A) derived from a monomer represented by the following general formula (1): wherein R1 to R12, Rk, and Rp each independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a cycloalkyl group containing 5 to 20 carbon atoms, a cycloalkoxyl group containing 5 to 20 carbon atoms, an aryl group containing 6 to 20 carbon atoms, a linear or branched alkyl group containing 1 to 10 carbon atoms, an alkenyl group containing 2 to 10 carbon atoms, an alkoxy group containing 1 to 10 carbon atoms, a heteroaryl group containing 6 to 20 carbon atoms, which comprises one or more heterocyclic atoms selected from O, N and S, or an aralkyl group containing 7 to 20 carbon atoms, and X and Y represent a single bond or an alkylene group containing 1 to 5 carbon atoms, i and ii each independently represent an integer of 0 to 4, and K1 and K2 each independently represent —

Abstract: The present invention provides: [1] a polycarbonate-based resin composition including: a polycarbonate-based resin (S) containing a polycarbonate-polyorganosiloxane copolymer (A) having a polyorganosiloxane block (A-1) including a specific structural unit and a polycarbonate block (A-2) including a specific structural unit; and a flame retardant (B); and [2] a molded body including the polycarbonate-based resin composition according to the above-mentioned item [1].

Abstract: The present invention generally relates to a powder comprising a PEEK-PEoEK copolymer, wherein the PEEK-PEoEK copolymer having RPEEK and RPEoEK repeat units in a molar ratio RPEEK/RPEoEK ranging from 95/5 to 5/95. The present invention also relates to a method of preparing a three-dimensional (3D) object by sintering layers of the powder.

Abstract: The present disclosure describes methods of polyimide synthesis and polyimides made therefore. The method includes placing a tetracarboxylic compound and a solvent in a reaction vessel and adding a first amount of a diamine. The first amount of the diamine is not more than 99.5 mol % of the tetracarboxylic compound inside the reaction vessel. The method can include agitating the mixture and determining a viscosity of the mixture. The method can further include adding a second amount of the diamine. The last steps can be repeated until the viscosity increases to a target value. The target viscosity can be correlated to a peak weight-averaged molecular weight of the polyimide.

Abstract: A polyimide material is obtained from a first monomer and a second monomer. The first monomer includes an es-ter-containing dianhydride. The second monomer includes a diamine. The polyimide material has desirable optical, structural, thermal, mechanical properties, or combination thereof.

Abstract: The present invention relates to a method for hydrosilylation of an unsaturated compound comprising at least one alkene function or one alkyne function with a compound comprising at least one hydrosilane function, said method being catalysed by an iron complex represented by the formula Fe[Si(SiR3)3]2 Ln, wherein each R is a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms, optionally substituted by one or more halogen atoms, each L is an ether ligand, and n=1, 2 or 3. The present invention also relates to a method for preparing said iron complex, as well as to the use thereof as a catalyst for the hydrosilylation of an alkene or alkyne.

Abstract: [Problem] To provide a polysiloxane composition capable of being cured at a low temperature and having good storage stability [Means for Solution] The polysiloxane composition according to the present invention comprises (I) a polysiloxane, (II) an ionic liquid, (III) an acid, and (IV) a solvent.

Abstract: Amino-functionalized linear and cyclic oligosiloxanes, which have at least two silicon and two oxygen atoms as well as an organoamino group and methods for making the oligosiloxanes are disclosed. Methods for depositing silicon and oxygen containing films using the organoamino-functionalized linear and cyclic oligosiloxanes are also disclosed.

Abstract: The present invention provides: [1] a polycarbonate-based resin composition including: a polycarbonate-based resin (S) containing a polycarbonate-polyorganosiloxane copolymer (A) having a polyorganosiloxane block (A-1) including a specific structural unit and a polycarbonate block (A-2) including a specific structural unit; and a release agent (B); and [2] a molded body including the polycarbonate-based resin composition according to the above-mentioned item [1].

Abstract: Described herein are associative polymers capable of controlling a physical and/or chemical property of non-polar compositions and related compositions, methods and systems. Associative polymers herein described have a non-polar backbone and functional groups presented at ends of the non-polar backbone, with a number of the functional groups presented at the ends of the non-polar backbone formed by associative functional groups capable of undergoing an associative interaction with another associative functional group with an association constant (k) such that the strength of each associative interaction is less than the strength of a covalent bond between atoms and in particular less than the strength of a covalent bond between backbone atoms.

Abstract: The present invention pertains to a method of making a latex-blended composition of a fluorinated thermoplastic elastomer and of a (per)fluoroelastomer, to the composition obtained therefrom, and to the use of the same for making shaped parts, said composition possessing an improved softness/mechanical properties compromise.

Abstract: A method for producing a polymeric nanofiber aggregate comprises the steps of: dispersing a specific water-insoluble self-assembly compound in one solvent of a specific organic solvent and a mixed solvent of the organic solvent and water to obtain a gel-like composition; replacing the organic solvent in the gel-like composition with water to obtain a water-replaced gel-like composition; squeezing the water-replaced gel-like composition by compressing the water-replaced gel-like composition in a plurality of directions substantially orthogonal to a longitudinal direction while setting the water-replaced gel-like composition free in the longitudinal direction to obtain a self-assembly fiber bundle; and polymerizing the self-assembly compound in the self-assembly fiber bundle to obtain an aggregate formed of polymeric nanofibers oriented in the longitudinal direction.