Abstract: The present disclosure provides a humidity-stiffening polymer material, and a preparation method therefor and a use thereof. The humidity-stiffening polymer material includes the following raw materials: a monomer, an ionic liquid, a salt, a cross-linking agent and an initiator, wherein the monomer includes benzyl methacrylate, the ionic liquid includes an imidazole-based ionic liquid, and the salt includes a hygroscopic salt. The method for preparing the humidity-stiffening polymer material includes: mixing the raw materials to obtain a precursor liquid, performing reaction on the mixture after degassing, and drying the mixture to obtain the humidity-stiffening polymer material. The humidity-stiffening polymer material is applied to actuators, soft robots and wearable biomedical devices based on bionic design. The present disclosure provides a humidity-stiffening polymer material, and a preparation method therefor and a use thereof.

Abstract: A colored resin component includes a colorant having maximum absorbance in a wavelength band of 700 nm or higher and 1100 nm or lower, a copolymer including a first repeating unit derived from an acrylic monomer having an epoxy group, a second repeating unit derived from a monomer having a phenolic hydroxyl group, and a third repeating unit derived from an acrylic monomer having an aromatic ring, or a third repeating unit derived from an acrylic monomer having an alicyclic structure, and a solvent compatible with the colorant and the copolymer.

Abstract: An acrylic elastomer copolymer that is a copolymer of (A) an alkyl (meth)acrylate and/or alkoxyalkyl (meth)acrylate monomer, (B) an ?,?-unsaturated carboxylic acid monomer, and (C) a (meth)acrylate monomer having a carbamic acid ester group represented by the general formula: (wherein R1 is a hydrogen atom or a methyl group, and R2 is a divalent aliphatic hydrocarbon group having 1 to 10 carbon atoms). A crosslinkable composition in which a crosslinking accelerator is compounded with the acrylic elastomer copolymer.

Abstract: A polymer composite of dissimilar polymers covalently bonded at the interface is disclosed.

Abstract: The present disclosure provides a modified conjugated diene-based polymer excellent in form retainability, and excellent in abrasion resistance, fracture performance and a low hysteresis loss property of a vulcanizate obtained therefrom, and a method for producing the same, and a modified conjugated diene-based polymer composition and a rubber composition using the modified conjugated diene-based polymer, etc.

Abstract: The present invention provides a perfluoroether fluororubber and a preparation method therefor and use thereof. The perfluoroether fluororubber is prepared by a stepwise polymerization method, wherein polymerization monomers in each step of polymerization comprise tetrafluoroethylene and a perfluoroalkyl vinyl ether. The preparation method for the perfluoroether fluororubber provided in the present invention can shorten polymerization time and improve production efficiency, and the finally obtained perfluoroether fluororubber is good in processability, high in strength, low in hardness and compression deformation and good in medium resistance.

Abstract: A graft copolymer contains crosslinked (meth)acrylic polymer particles (a) having an average particle size of 150 nm or less and a glass transition temperature of ?10° C. or lower and a non-crosslinked methacrylic polymer component (b) having a weight-average molecular weight of 25×104 or more. At least a part of the non-crosslinked polymer component (b) is grafted to the crosslinked polymer particles (a). The crosslinked polymer particles (a) account for 1 to less than 50 wt % of the total weight of the crosslinked polymer particles (a) and the non-crosslinked polymer component (b).

Abstract: A resin composition has a viscosity of equal to or less than about 20 mPa·s at a temperature in a range of about 30° C. to about 50° C. as measured according to JIS Z8803, a storage modulus in a range of about 1.7×105 Pa to about 3×105 Pa at about ?20° C., and a storage modulus in a range of about 1.5×104 Pa to about 6×104 Pa at about 25° C. An adhesive member formed of the resin composition is also provided.

Abstract: The invention relates to polymer-interaction molecule (e.g., antibodies) conjugates and uses of such conjugates for delivery of interaction molecules to cells. The invention also relates uses polymer-interaction molecule (e.g., antibodies) conjugates for eliciting cellular responses (e.g., induction of cell proliferation).

Abstract: Disclosed are a green synthesis method of an antibacterial super-porous hydrogel, a product of the antibacterial super-porous hydrogel and an application of the antibacterial super-porous hydrogel to degradation of various pollutants in wastewater treatment. The super-porous hydrogel based on poly (ionic liquid) is prepared by copolymerization of an imidazole type ionic liquid with double bonds and polyethylene glycol diacrylate (PEGDA) as a cross-linker. In the reaction system, water is a good solvent for the monomer ionic liquid and PEGDA, but a poor solvent for the poly (ionic liquid); when an initial concentration of the ionic liquid is higher than 25%, the phase separation typically proceeds through poly(ionic liquid) formation, interconnected networks with macroporous structure could be obtained by photo-crosslinking.

Abstract: Provided herein is a curable liquid stereolithography resin comprising (a) a divinylarene dioxide, such as for example a divinylbenene dioxide (DVBDO); (b) a free radically curable component, such as for example a (meth)acrylate component; (c) a cationic photoinitiator; and (d) a free radical photoinitiator. The stereolithography resin may comprise additional components, such as a cationically curable component other than a divinylarene dioxide. Preferably, the stereolithography resin has a viscosity at 25° C. of less than 400 mPa·s.

Abstract: The present invention relates to a composition comprising an aqueous dispersion of opacifying pigment-binder hybrid polymer particles and a dispersant functionalized with a sulfur acid monomer absorbed to opacifying pigment particles. The composition of the present invention is useful for improving wet-hide performance in paints.

Abstract: A resin composition contains a polyphenylene ether compound having a carbon-carbon unsaturated double bond at the terminal, a maleimide compound (A) having an indane structure in the molecule, and an inorganic filler.

Abstract: An object of the present invention is to provide an antistatic agent which imparts excellent antistatic properties to thermoplastic resins. The antistatic agent (Z) of the present invention contains a block polymer (A) having a block of a polyamide (a) and a block of a polyether (b1) as structure units, wherein the polyether (b1) contains propylene oxide (PO) and ethylene oxide (EO) as constituent monomers, and a weight ratio of the propylene oxide (PO) to the ethylene oxide (EO), i.e., propylene oxide (PO)/ethylene oxide (EO), is 1/99 to 25/75.

Abstract: Provided is a polymer functioning as a leveling agent that imparts high smoothness to a coating film.

Abstract: A multiblock, cationic-functionalized norbornene copolymer is formed by a process including performing a vinyl addition polymerization in the presence of a metal catalyst of a first norbornene monomer substituted with a first alkyl group and a second norbornene monomer substituted with a second alkyl group by adding a predetermined amount of the first norbornene monomer and a predetermined amount of the second norbornene monomer sequentially to the reaction to form blocks of an intermediate norbornene multiblock copolymer. The second alkyl group includes a substituent which undergoes a reaction with a precursor for a cationic group having a volume less than 0.25 cm3/mol. The process further includes reacting the precursor for the cationic group with the intermediate norbornene multiblock copolymer to form the multiblock, cationic-functionalized norborene copolymer.

Abstract: Provided is a waterborne resin crosslinking agent, as well as a waterborne resin crosslinking agent-containing liquid and a waterborne resin composition, including the waterborne resin crosslinking agent. The waterborne resin crosslinking agent of the present invention includes a polycarbodiimide compound (A) and a polycarbodiimide compound (B); the polycarbodiimide compound (A) has a structure in which the isocyanate groups at both terminals are each capped with a predetermined hydrophilic organic compound; the polycarbodiimide compound (B) has, as a structural unit, a diisocyanate compound having one cyclohexyl ring or one benzene ring, and has a structure in which the isocyanate groups at both terminals are each capped with a predetermined organic compound, and the polycarbodiimide compound (A) is in an amount of 5 to 90 parts by mass per 100 parts by mass in total of the polycarbodiimide compounds (A) and (B).

Abstract: A waterborne resin crosslinking agent is provided, wherein the waterborne resin crosslinking agent of the present invention includes a polycarbodiimide compound (A) and a polycarbodiimide compound (B); the polycarbodiimide compound (A) has a structure in which the isocyanate groups at both terminals are each capped with a predetermined hydrophilic organic compound; the polycarbodiimide compound (B) has a chain diisocyanate compound as a structural unit, and has a structure in which the isocyanate groups at both terminals are each capped with a predetermined organic compound, and the polycarbodiimide compound (A) is in an amount of 5 to 90 parts by mass per 100 parts by mass in total of the polycarbodiimide compounds (A) and (B).

Abstract: The invention provides a waterborne polyurethane emulsion and preparation method and use thereof. The method comprises the steps of: heating and dehydrating a macromolecular diol, and then reacting with a first polyisocyanate to obtain a first prepolymer; reacting the first prepolymer with a second polyisocyanate to obtain a second prepolymer; reacting the second prepolymer with a hydrophilic chain extender and a small-molecule chain extender to obtain a third prepolymer; reacting the third prepolymer with a salt forming agent, followed by emulsification upon addition of a post-chain extender, and by desolvation to obtain a polyurethane emulsion; wherein the molar amount of the first polyisocyanate is less than that of the second polyisocyanate, and the molar ratio of the first polyisocyanate to the macromolecular polyol is less than 1:3. The condom prepared using the polyurethane emulsion of the present invention has the characteristics of high elasticity and high strength.

Abstract: Provided is a waterborne resin crosslinking agent and the like capable of inhibiting lowering of gloss (relative specular glossiness) of cured films (waterborne resin coating films) after heating.

Abstract: Imine, obtainable by reaction of (i) an amino-functionalised polyoxyalkylene, the polyoxyalkylene chains of which are a copolymer of oxyethylene and oxypropylene units, those polyoxyalkylene chains carrying primary amino groups (preferably two terminal primary amino groups per molecule), and (ii) a ketone and/or aldehyde having a hydrogen atom at the carbon atom in the alpha-position to the carbonyl carbon; and various subjects of the invention based thereon, especially in coating systems or adhesive systems.

Abstract: A moisture-curing polyurethane composition including: at least one isocyanate-functional polymer with a content of monomeric isophorone diisocyanate of below 0.5 weight-%, obtained from the reaction of isophorone diisocyanate and at least one polyol, and at least one aldimine of formula (I). The composition has a low toxicity, good shelf life stability and cures quickly to an elastic material of low surface tack and good mechanical properties, particularly in terms of high tensile strength and modulus of elasticity at high elongation. It enables coatings, sealants and adhesives with excellent stability under outdoor weathering conditions and high UV load. The aldimine of formula (I) allows to overcome the drawbacks caused by the removal of most of the monomeric isophorone diisocyanate in terms of cure speed, surface tackiness and final strength of such compositions.

Abstract: A polyurethane resin includes a reaction product of a raw material component containing a polyisocyanate, a macropolyol, a hydrophilic group-containing polyol, and a chain extender. The polyisocyanate is an alicyclic polyisocyanate. The macropolyol contains a plant-derived macropolyol. A biomass degree of the reaction product is 30% or more.

Abstract: The invention relates to a curable composition including (a) a component having one or more carbonyl group-containing compounds having a number average molecular weight (Mn) of at least 500 g/mole, wherein each carbonyl group is independently a ketone group or an aldehyde group; (b) a polyamine compound having at least two primary amine groups per molecule; and (c) a polyisocyanate compound. Articles coated with the curable composition are also provided.

Abstract: A urea resin composition capable of providing a polyurea foam exhibiting excellent flame retardancy and shape retention during combustion, capable of suppressing deterioration over time in a wet-heat environment, exhibiting excellent adhesion to an adherend during coating, being hardly cracked even if flame contact occurs, and hardly allowing carbonization to proceed to a deep portion of the foam. A urea resin composition comprising a polyisocyanate compound (A), a polyamine compound (B), a trimerization catalyst, a foaming agent, a foam stabilizer, and a flame retardant.

Abstract: A process for preparing a polymer containing a structural element involves: (a) providing an uretdione of formula (I), and (b) opening a ring of the uretdione at a temperature greater than 50° C. and in the presence of a catalyst composition containing at least one catalyst, to obtain the polymer. In the element —N—C(?O)—X2, X2 is a derivative of the group X1 reactive towards isocyanates: The polymer containing the element —N—C(?O)—X2—obtained from the process is useful. A method for modifying polymers which have reactive groups towards isocyanate groups involves: (i) providing a polymer having at least one functional group reactive towards isocyanate groups; (ii) providing an uretdione, of formula (II); and (iii) reacting the polymer with the uretdione at a temperature of more than 50° C. in the presence of a catalyst composition containing at least one catalyst. The modified polymer obtained according to the method is useful.

Abstract: Multi-layer electrochromic structures, and processes for assembling such structures, incorporating a cross-linked ion conducting polymer layer that maintains high adhesive and cohesive strength in combination with high ionic conductivity for an extended period of time, the ion conducting polymer layer characterized by electrochemical stability at voltages between about 1.3 V and about 4.4 V relative to lithium, lithium ion conductivity of at least about 10?5 s/cm, and lap shear strength of at least 100 kPa, as measured at 1.27 mm/min in accordance with ASTM International standard D1002 or D3163.

Abstract: The patent application discloses a degradable thermoset composite. The composite comprises a reaction product of an epoxy resin, a cross-linker, a catalyst. The epoxy resin mixture may comprise at least one cycloaliphatic epoxide. The reaction product may have a glass transition temperature greater than or equal to 140° C. as measured by DMA.

Abstract: Disclosed is a novel room-temperature curable bio-based epoxy vitrimer with a simple design of the chemical structure. A hempseed oil-derived glycidyl ester type epoxy (HOEP) was synthesized and then blended with a bisphenol A epoxy (DER331) to manipulate the properties of the resulting vitrimer s. An aliphatic amine hardener, diethylenetriamine (DETA), was selected as hardener to realize the room temperature curing in presence of triethanolamine (TEOA) as the catalyst. Unlike the traditional glycidyl ether epoxy-amine the thermosets which are based on stable C-N and ether linkages, the epoxy vitrimer herein includes ester bonds with HOEP and hydroxyls formed from the reaction of amine and epoxy in its cross-linked network. Dynamic transesterification (DTER) between the ester bonds and hydroxyls take place at elevated temperatures, imparting the vitrimer significant stress relaxation behavior and repairability. This provided a viable method to produce room temperature curable epoxy vitrimer s.

Abstract: Provided are an epoxy resin curing agent containing an amine composition or a modified product thereof, wherein the amine composition contains bis(aminomethyl)cyclohexane (A) and a compound (B) represented by the following formula (1), and wherein the content of the component (B) based on 100 parts by mass of the component (A) is from 1.5 to 20.0 parts by mass, an epoxy resin composition, and an epoxy resin curing agent for an amine composition. In the formula (1), R1 is an alkyl group having 1 to 6 carbon atoms optionally having a hydroxy group, R2NHCH2—, where R2 represents an alkyl group having 1 to 6 carbon atoms, or a group represented by the following formula (1A), and p is a number of 0 to 2. In the formula (1A), R3 represents a hydrogen atom or NH2—.

Abstract: Provided are an epoxy resin curing agent containing an amine composition or a modified product thereof, wherein the amine composition contains bis(aminomethyl)cyclohexane (A), a compound (B) represented by the specific formula (1), and a compound (C) represented by the specific formula (2), and wherein a mass ratio of the component (B) to the component (C) [(B)/(C)] is from 0.01 to 5.0, an epoxy resin composition, and use of an amine composition for an epoxy resin curing agent.

Abstract: Disclosed herein are embodiments of a nanohoop-functionalized polymer and methods of making and using the same. In particular embodiments, polymer comprises one or more nanohoops that extend from the polymer backbone. Also disclosed herein are polymerizable nanohoop monomer embodiments that can be used to make the polymer embodiments disclosed herein.

Abstract: Compositions of high molecular weight poly(hydroxy acid) polymer having good thermal stability and a weight average molecular weight of >100,000 by GPC. The compositions include one or more chain-terminator compounds/impurities which may be incorporated into the polymer and rendered harmless by the presence of appropriate amounts of bi-functional and multi-functional polymerization initiators. A process including first mixing glycolic acid and/or lactic acid (with chain-terminators), and a diol or di-acid initiator, and at least one multifunctional initiator to form a liquid monomer mixture in an agitated polycondensation reactor. Next, polycondensing to form a liquid reaction mixture comprising a pre-polymer having a weight average molecular weight of >10,000 by GPC, and greater than 80% by mole hydroxyl or carboxyl end-group termination, then crystallizing to form a first solid reaction mixture.

Abstract: The invention provides a heat-shrinkable polyester film with high heat shrinkage ratio in a main shrinkage direction and is also satisfactorily recyclable with used beverage PET bottles to produce a recycled PET resin. The heat-shrinkable polyester film comprises 95-100 mol % of dicarboxylic acid and 0-5 mol % of isophthalic acid in 100 mol % of whole dicarboxylic acid component, 85-98 mol % of ethylene terephthalate unit in 100 mol % of whole ester unit, and 2-15 mol % of diethylene glycol in 100 mol % of whole polyol component, wherein the film has the predetermined hot-water heat shrinkage ratio, as well as the melting peak temperature, the amount of exothermic heat in crystallizing, and the amount of endothermic heat in melting within the predetermined range which are determined through differential scanning calorimetry (DSC) in heating the film to be melted, quenching the film, and re-heating the film.

Abstract: The present disclosure provides a polyester and a molded article. The polyester includes residues of formula (i), formula (ii), formula (iii), and formula (iv): in which R1 is an aromatic group, R2 is a C2-C6 straight-chain hydrocarbon group, * represents a linking bond. Based on 100 mol% of a sum of the residues of the formula (ii), the formula (iii) and the formula (iv), a content of the residue of the formula (iii) ranges from 50 mol% to 85 mol%, and the residue of the formula (iv) ranges from 12 mol% to 40 mol%.

Abstract: Copolyesters made from the direct esterification of terephthalic acid with diols including ethylene glycol, but which contain low diethylene glycol (DEG) content, and processes for making the copolyesters. The copolyesters are characterized by comprising 1.0 wt % or less of DEG without requiring the use of DEG-suppressing additives. The processes are characterized by features including operating at lower pressures and lower EG:TPA feed mole ratios in the first reaction zone, while simultaneously at higher temperatures than typical operation in order to lower incorporation of DEG into the final polymer.

Abstract: The present invention is directed at multibranched acid terminated oligomers of itaconic acid. Such multibranched acid terminated oligomers also contain six or more vinylidine groups providing unsaturations that can then be relied upon for subsequent Michael nucleophilic addition type reactions. The subject oligomers have particular use for treatment of damaged hair or skin.

Abstract: An aliphatic copolycarbonate and a preparation method thereof are disclosed. The aliphatic copolycarbonate contains a structural unit represented by formula (1) and a structural unit represented by formula (2): where R1 is a C3-C10 alkylene group, and R2 is an alicyclic group. In the present disclosure, a specific alicyclic monomer is introduced into the aliphatic polycarbonate molecular chain to obtain a novel aliphatic copolycarbonate. The polymer in the present disclosure has properties such as relatively high melting point, glass transition temperature and thermal stability, and has better thermal properties.

Abstract: The present invention provides a polycarbonate-based resin composition, including: a polycarbonate-based resin (S) containing a polycarbonate-polyorganosiloxane copolymer (A), which contains a polycarbonate block (A-1) formed of a specific repeating unit and a polyorganosiloxane block (A-2) containing a specific repeating unit; and a copolymer (B) including a constituent unit (b-1) having a specific structure, a constituent unit (b-2) having a specific structure, and a constituent unit (b-3) having a specific structure.

Abstract: A process for the ring-opening copolymerisation of epoxides with carbon dioxide for the preparation of a polycarbonate is described. Also described are catalysts useful in the aforementioned process. The heterobimetallic catalysts present a number of advantages over catalysts that have conventionally been used for this process.

Abstract: The present invention relates to a compound represented by the following formula (I): A[B—(C)v]w??(I), wherein A is a photoprotective moiety, B is a linker, C is a functional group, v is an integer from 1 to 2000, and w is an integer from 1 to 6. It also relates to a composition comprising the same and, more particularly, to a cosmetic or a sunscreen composition. It also relates to the use of such compounds in cosmetic and therapeutic applications. The invention also relates to the use of such compounds for reducing photodegradation and/or photoinstability of pharmaceuticals and cosmetics. The invention further relates to a material comprising a support and such a compound adhered to said support.

Abstract: The present technology relates to an ionic polymer comprising at least one repeating unit comprising the reaction product between at least one compound comprising at least two functional groups and a metal bis(halosulfonyl)imide for use in electrochemical applications, particularly in electrochemical accumulators such as batteries, electrochromic devices and supercapacitors. The present technology also relates to a polymer composition, a solid polymer electrolyte composition, a solid polymer electrolyte, an electrode material comprising said ionic polymer. Their uses in electrochemical cells and electrochemical accumulators as well as their manufacturing processes are also described.

Abstract: Provided are a polyamide having a structural unit represented by General Formula [1], and the like. In General Formula [1], R1 is a divalent organic group represented by General Formula [2], and R2 is a divalent organic group. In General Formula [2], n1 and n2 are each independently an integer of 0 to 4, and in a case where a plurality of R3's are present, the plurality of R3's each independently represent a monovalent substituent.

Abstract: There is provided a polymer or derivative thereof comprising a plurality of active amine groups in the backbone, wherein the polymer is a reaction product of a reaction between one or more bis-carbonates and one or more amine compounds having at least two terminal amino groups. Also provided are use of the polymer or derivative thereof and a method of preparing the polymer or derivative thereof.

Abstract: Provided are a high-temperature energy storage hybrid polyetherimide dielectric film, a preparation method therefor, and use thereof, belonging to the technical field of polymer capacitor films. The method includes: synthesizing a solution of polyether amide acid having a hydroxyl end group or side chain through a reaction of a polyetherimide monomer having a hydroxyl functional group; adding, into the solution of polyether amide acid, water and metal alkoxide as an inorganic component precursor to form uniform sol; and obtaining the high-temperature energy storage hybrid polyetherimide dielectric thin film through coating and thermal imidization. The dielectric thin film is prepared by one-step synthesis and an inorganic phase is introduced during hybridization, dispersion at a molecular level is realized, avoiding an agglomeration of the inorganic phase and improving interface compatibility of the organic phase, as well as enhancing energy storage performance of the dielectric film.

Abstract: A process for end-capping a dimethylsilanol terminated polydiorganosiloxane with one or more di, tri and/or tetra alkoxysilanes in the presence of a basic end-capping catalyst starting material is provided. An acidic stabilizing/neutralising agent is subsequently added. The acidic stabilizing/neutralising agent is selected from one or more fatty acids having from 8 to 26 carbons; an alkane sulphonic acid having from 1 to 10 carbons; acidic fumed silica and/or one or more acidic liquid polybutadienes or a mixture thereof. The resulting capped polymeric material may be utilized as a polymer in, e.g., an organopolysiloxane elastomer composition.

Abstract: The present disclosure relates to a hydrogenpolyorganosiloxane of formula X—[SiR12O]m—[SiR1(CaH2a+1)O]n—[SiR1HO]r—[SiR12]—X where a is an arbitrary integer between 6 and 18, n is an arbitrary number between 0.7 and 30, m is an arbitrary number between 10 and 1500, r is an arbitrary number between 0 and 200, R1 is independently at each occurrence a C1-C5 alkyl or phenyl, and X represents one or more groups selected from among hydrogen, alkoxy and hydroxyl, and greater than or equal to 60 mol % of X are hydrogen atoms. The hydrogenpolyorganosiloxane can significantly lower the viscosity and improve the flowability of the resulting silicone composition compared with the existing hydrogenpolyorganosiloxanes at the same thermally conductive filler loading, thereby improving the thermal conductivity.

Abstract: A method of preparing alkyl functionalized polysiloxane, comprising: I) reacting silane oligomer with hydroxyl-terminated polysiloxane in the presence of Catalyst 1, and II) reacting the product of Step (I) with an endcapper in the presence of Catalyst 2. This method could flexibly adjust the polymerization degree and viscosity of the desired long-chain alkyl functionalized polysiloxane for different application fields and introduce multiple alkyl functional groups and further functional groups to obtain bifunctionalized polysiloxane, moreover this method could greatly reduce the proportion of undesired cyclosiloxanes in the equilibrium product and the reaction is mild, easy to operate and environmentally friendly.

Abstract: The present invention relates to a silicone formulation comprising an oxime silane crosslinker comprising 2-heptanoneoxime which exhibits significantly improved early cracking behaviour and/or skin formation time compared to silicone formulations employing conventional oxime silane crosslinkers, the corresponding cured silicone formulation, uses of the cured silicone formulation and uses of such oxime crosslinkers in the area of silicone formulations.

Abstract: Provided are a dispersion composition in which a resin having carboxyl groups is dispersed, and which is a resin aqueous dispersion composition having a relatively high resin concentration but a relatively low viscosity, and a method for producing the same.