Abstract: An anti-vibration rubber composition contains: a polymer comprising component (A); and components (B) to (E). The mixing ratio of the components (B) and (C) is in a range of (B)/(C)=99/1 to 96/4 in weight ratio. As a result, it becomes possible to achieve a low dynamic magnification and to achieve both durability and weather resistance at a high level. (A) diene rubber; (B) silica; (C) carbon black; (D) silane coupling agent; (E) dihydrazide compound represented by general formula (1). [in general formula (1), R represents an alkylene group having 1 to 30 carbon atoms, a cycloalkylene group having 1 to 30 carbon atoms, or a phenylene group].

Abstract: A chloroprene-unsaturated nitrile copolymer composition containing 100 parts by mass of a chloroprene-unsaturated nitrile copolymer having 3 to 20% by mass of a structural unit derived from an unsaturated nitrile monomer, and 0.05 to 2.0 parts by mass of a xanthogen compound.

Abstract: Provided are a thermoplastic resin composition and a molded product using same, wherein the thermoplastic resin composition includes a base resin including (A-1) 10 wt % to 30 wt % of a first acrylate-based graft copolymer having an acrylate-based rubbery polymer with an average particle diameter of 300 nm to 400 nm; (A-2) 10 wt % to 35 wt % of a second acrylate-based graft copolymer having an acrylate-based rubbery polymer with an average particle diameter of 100 nm to 200 nm; (B) 10 wt % to 15 wt % of an aromatic vinyl compound-vinyl cyanide compound copolymer; and (C) 35 wt % to 55 wt % of ?-methylstyrene-based copolymer, and (D) 1 to 5 parts by weight of an ultrahigh molecular weight styrene-acrylonitrile copolymer having a weight average molecular weight of greater than or equal to 5,000,000 g/mol, based on 100 parts by weight of the base resin.

Abstract: A glove that is detectable by a metal detector. The glove is prepared from latex formulation including a metallic additive. The metallic additive includes a pigment, a surfactant and a solvent. The metallic additive is used in an amount of at least 10 phr based on an amount of a latex formulation.

Abstract: A recyclable nano composite, a preparation method, and an application thereof are provided. The preparation method includes providing a reinforcement material including a conductive material, or, a combination of the conductive material and an insulating material; directly mixing the reinforcement material with a matrix material, or, molding the reinforcement material to form a film, fiber or three-dimensional network structure formed by the reinforcement material, and then compounding the film, fiber or three-dimensional network structure with the matrix material to obtain the recyclable nano composite. The present disclosure further discloses a recycling method of a reinforcement material. The recyclable nano composite provided by the present disclosure has high strength, high toughness, conductivity, electromagnetic shielding and other properties; furthermore, by simple treatment, the reinforcement material can be recycled.

Abstract: Provided is a composition for surface treatment of a steel sheet, the composition having excellent resistance to an acid, such as sulfuric acid, and to a coated steel sheet to which the composition for surface treatment is applied, wherein the composition for surface treatment comprises 30-50% wt % of colloidal silica containing 5-20 nm-sized silica, 40-60% wt % of silane containing three or more alkoxy groups, 5-15 wt % of an acrylate-based organic monomer, 0.01-1 wt % of an acid, and 1-15 wt % of a solvent.

Abstract: A color rubber composition for tires according to an embodiment contains a rubber component, a pigment other than black or white, a petroleum wax, and a white filler. The petroleum wax has a normal/iso ratio (mass ratio) of 70/30 to 90/10. The carbon number distribution for iso components in the whole petroleum wax is 1.0% or less for 25 or less carbon atoms, 4.0 to 8.0% for 26 to 32 carbon atoms, 5.0 to 15.0% for 33 to 44 carbon atoms, and 1.0% or more for 45 or more carbon atoms. The carbon number distribution for normal components in the whole petroleum wax is 5.0 to 18.0% for 25 or less carbon atoms, 40.0 to 48.0% for 26 to 32 carbon atoms, 15.0 to 27.5% for 33 to 44 carbon atoms, and 2.0% or more for 45 or more carbon atoms.

Abstract: A preparation method of a zeolite/polyimide composite membrane includes: synthesizing a zeolite-doped polyamic acid precursor casting solution by condensation polymerization synthesis; coating a substrate with the obtained casting solution, and obtaining a zeolite/polyamic acid composite porous membrane by non-solvent induced phase separation; and obtaining the zeolite/polyimide composite membrane by performing thermal imidization on the zeolite/polyamic acid composite porous membrane through gradient heating.

Abstract: A quick-drying solvent-free sag-resistant polyurethane waterproof coating and preparation method therefor, raw materials therefor comprising a polyurethane prepolymer, a plasticizer, a dispersant, a filler, a dehydrant, a catalyst, a defoamant, and an oxazolidine reactive diluent. The catalyst is composed of pentamethyl dipropylene triamine, tetramethylethylenediamine, and 1,8-diazabicyclo[5.4.0]undecene. Raw materials of the polyurethane prepolymer comprise a polyether diol, a polyether triol, an isocyanate, and a chain extender. The prepolymer is prepared by means of the following method: 1) measuring out the raw materials for the polyurethane prepolymer, and reacting the polyether diol with the isocyanate until reaction is complete; 2) then adding the polyether triol for reaction until reaction is complete; 3) then adding the chain extender for reaction, completing preparation.

Abstract: A non-curable thermal-conductive silicone composition contains essential components of: (A) an organopolysiloxane having a kinematic viscosity at 25° C. of 1,000,000 mm2/s or more in an amount of 5 to 20 mass % relative to a sum of the component (A) and a component (B); (B) a hydrolysable organopolysiloxane compound shown by the following general formula (1) in an amount of 80 to 95 mass % relative to the sum of the components (A) and (B); and (C) a heat conductive filler in an amount of 10 to 95 mass % relative to a total amount of the composition. A mixture of the components (A) and (B) has a molecular weight distribution Mw/Mn of 10 or more. R1 represents a monovalent hydrocarbon group having 1 to 10 carbon atoms optionally having a substituent. “m” represents an integer of 5 to 100.

Abstract: The present invention is a polyimide varnish for conductor coating, which provides a polyimide varnish comprising: a polyamic acid solution prepared through polymerization of at least one dianhydride monomer and at least one diamine monomer in an organic solvent; an aromatic carboxylic acid having four or more carboxyl groups; an alkoxy silane coupling agent; and an antioxidant, wherein the polyimide varnish has a solid content of 15 to 38 wt % on the basis of the total weight thereof, and a viscosity at 23° C. of 500 to 9,000 cP, and the coated material prepared from the polyimide varnish has a degree of softening resistance of 520° C. or higher, and a breakdown voltage (BDV) of 8 kV/mm or higher.

Abstract: A flame retardant levulinic acid-based compound, a process for forming a levulinic acid-based flame retardant polymer, and an article of manufacture comprising a material that contains a flame retardant levulinic acid-based polymer are disclosed. The flame retardant levulinic acid-based compound has variable moieties, which include phenyl-substituted and/or R functionalized flame retardant groups. The process for forming the flame retardant polymer includes forming a phosphorus-based flame retardant molecule, forming a levulinic acid derivative, chemically reacting the phosphorus-based flame retardant molecule and the levulinic acid derivative to form a flame retardant levulinic acid-based compound, and incorporating the levulinic acid-based flame retardant compound into a polymer to form the flame retardant polymer.

Abstract: Resin compositions including (A) a hollow organic polymer particle, (B) an epoxy resin, and (C) a curing agent provide cured products having a superior smear removal properties.

Abstract: The invention concerns an antidegradant blend for polymers, comprising: a. an antioxidant selected from one or more of: i. a phenolic antioxidant; ii. an organic phosphite antioxidant; and: b. an inorganic antioxidant or reducing agent; wherein the composition is absent any metal carboxylate or buffering agent having the capacity to buffer in aqueous solution at a pH range from 4 to 8.

Abstract: Curatives and their resulting thermosets and other crosslinked polymers can reduce thermal expansion mismatch between an encapsulant and objects that are encapsulated. This can be accomplished by incorporating a negative CTE moiety into the thermoset resin or polymer backbone. The negative CTE moiety can be a thermal contractile unit that shrinks as a result of thermally induced conversion from a twist-boat to chair or cis/trans isomerization upon heating. Beyond CTE matching, other potential uses for these crosslinked polymers and thermosets include passive energy generation, energy absorption at high strain rates, mechanophores, actuators, and piezoelectric applications.

Abstract: Rhamnolipids and/or sophorolipids can be used for increasing coverage and/or for maintaining application properties in the course of storage of coating compositions.

Abstract: A polymer composition comprises a polypropylene polymer and a salt of a branched alkyl phosphonic acid.

Abstract: The present invention relates to halogen-free flame retardant compositions, comprising polyolefins polymers as active ingredient and a flame retardant system. The flame retardant system comprises at least an Hypophosphorous acid metal salt (preferred is Aluminium hypophosphite) as main flame retardant component, at least a sterically hindered N-alkoxyamine with a specific structure as first flame retardant synergic component, at least a silicon oxide or aluminium oxide or a mixture thereof with specific properties as second flame retardant synergic component.

Abstract: A resin composition containing a resin, a magnetic powder, a first non-magnetic powder with a water-soluble content in the range of 0.1% to 0.5%, and a second non-magnetic powder with a water-soluble content of 0.05% or less.

Abstract: A method for producing highly spherical polymer particles comprising a polyamide having an optical absorber pendent from a backbone of the polyamide (OAMB-polyamide) may comprise: mixing a mixture comprising the OAMB-polyamide, a carrier fluid that is immiscible with the OAMB-polyamide, and optionally an emulsion stabilizer at a temperature greater than a melting point or softening temperature of the OAMB-polyamide and at a shear rate sufficiently high to disperse the OAMB-polyamide in the carrier fluid; and cooling the mixture to below the melting point or softening temperature of the OAMB-polyamide to form particles comprising the OAMB-polyamide and the emulsion stabilizer, when present, associated with an outer surface of the particles.