220 results about "Polymer composition" patented technology

The present invention relates to a polymer composition comprising an ethylene-based polymer and a polylactic acid. Such polymer composition exhibits desirably good melt fracture prevention properties, in particular in production of polymer films.

The present invention relates to a multilayer film comprising: an inner layer system comprising a first surface and a second surface; a first skin layer adhered to the inner layer system at the first surface of the inner layer system; and a second skin layer adhered to the inner layer system at the second surface of the inner layer system; wherein the inner layer system consists of a polymer formulation (A), wherein the polymer formulation (A) comprises: > 60.0 and < 90.0 wt% of a first ethylene-based polymer which is a linear low density polyethylene A (LLDPE A); and > 10.0 and < 40.0 wt% of a high density polyethylene (HDPE) having a density > 940 and < 970 kg / m 3 , preferably > 955 and < 970 kg / m 3 ; measured according to ASTM D792 (2008); and the first and / or second skin layer is a sealing layer comprising a second ethylene-based polymer which is a linear low density polyethylene B (LLDPE B) comprising polymerized moieties derived from ethylene and 1-octene or 1-hexene having a density > 890 and < 915 kg / m 3 , preferably > 900 and < 915 kg / m 3 , measured according to ASTM D792 (2008); preferably, wherein the sealing layer comprises > 70.0 wt% of the second ethylene-based polymer, or wherein the sealing layer consists of the second ethylene-based polymer; wherein the multilayer film is a biaxially oriented film, wherein the biaxial orientation is introduced in solid state. This film allows the production of a sealed package having a sufficiently high seal strength at reduced sealing temperature (also referred to as seal initiation temperature) which at the same time has improved tensile properties, such as an improved tensile modulus in machine and transverse direction and an improved tensile strength in machine and transverse direction, which has proven.

The present application relates to the cosmetic technical field, specifically, it relates to a kind of lipid-polymer composition comprising retinol and its preparation method and application.The component includes retinol 1-15%, solvent oil 10-20%, antioxidant 0.1-1%, emulsifier 1-4.5%, lipid 1-2%, polyol 10-20%, polymer 0.05-0.5% by mass percentage, and the balance is water.The present application can significantly improve the stability of retinol and system by the compounding of specific retinol, solvent oil, antioxidant, emulsifier, lipid, polyol and polymer, solve the problem of easy oxidative degradation of retinol;By limiting the emulsifier to be polyglycerol emulsifier, combined with lipid and polymer hybridization wrapping, the skin irritation of retinol can be effectively reduced, and the defects of strong irritation of retinol and limited application population can be effectively solved.

The invention is directed to a crosslinkable polyethylene composition comprising an additive composition consisting of polyethylene glycol and a mixture of 4,4′-thiobis (2-tertbutyl-5-methylphenol) plus thiodiethylene bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate].

An alkoxysilyl-containing polyurethane polymer composition is prepared using a urethane-forming organometallic catalyst which is then stabilized to moisture exposure by the addition of a mercapto-containing compound. The stabilized moisture-curable alkoxsilyl-containing polyurethane polymer composition is activated to moisture curing by the addition of a hydrolysis and condensation catalysts. The stabilized moisture-curable alkoxsilyl-containing polyurethane polymer composition is useful as a component in the preparation of coatings, adhesives, sealants, consumer goods and industrial goods.

Disclosed are polymer compositions incorporating metal nanoparticles, and medical devices or other products made therefrom. The disclosed polymer compositions can be used to form medical devices, including implantable medical devices, that have effective antimicrobial properties. The disclosed polymer compositions incorporate metal nanoparticles that function without releasing metal (e.g., silver) ions. The polymer compositions may have anti-UV properties conferred by the metal nanoparticles.

A method for crosslinking a moisture-curable polymer composition comprises the following steps: producing a moisture-curable polymer composition of a silane-functionalized polyolefin and an expandable flame retardant mixture, wherein the expandable flame retardant mixture comprises piperazine pyrophosphate and a phosphoric acid compound in an amount of 15% to 55% by weight, based on the total weight of the expandable flame retardant mixture. The method also comprises the step of using the expandable flame retardant mixture to catalyze a moisture-induced crosslinking reaction of the silane-functionalized polyolefin to form a moisture-curable polymer composition.

This invention discloses a PCB dry film and its preparation method, belonging to the field of PCB manufacturing materials. The dry film comprises a polyester carrier film, a functional resin layer, and a polyethylene protective film. The resin layer polymer composition contains, by weight,: (A) 45-65 parts of a base binder resin; (B) 20-40 parts of a crosslinkable monomer; (C) 28 parts of a crosslinking initiator; and (D) 0.5-5 parts of additives. Wherein (A) is a multifunctional modified acrylate copolymer, with main or side chain bonds containing nitrogen or sulfur heterocyclic groups, olefinic unsaturated crosslinking groups, free carboxyl groups, and polylactic acid ester or polycaprolactone microblocks, a weight-average molecular weight of 30,000-80,000, and an acid value of 120-180 mgKOH / g. This invention ensures that the dry film has excellent developability, thereby meeting the manufacturing requirements of high-quality printed circuit boards.

This document discloses feminine hygiene products and multilayer membrane structures. According to one or more embodiments disclosed herein, a feminine hygiene product may include a feminine sanitary pad comprising an absorbent body, an adhesive layer located on at least one surface of the absorbent body, and a pouch package in contact with the adhesive layer of the feminine sanitary pad. The pouch package may include a release layer in direct contact with the adhesive layer. The release layer may comprise a polymer composition comprising low-density polyethylene covalently bonded to polydimethylsiloxane.

This application relates to a process for preparing a filled wax-free adsorption pad, which is obtained by the following method: Step 1) PE foam material is foamed to form a porous structure of several foam skins; a modified PE board has several slots; Step 2) Adhesive is applied to the surface of the foam skins, and then the adhesive side of the foam skins is attached to the slots of the modified PE board, with the foam skins and slots corresponding one-to-one, and fixed to obtain a filled wax-free adsorption pad; both the PE foam material and the modified PE board contain an acid-resistant blend modifier; the acid-resistant blend modifier is composed of nano-lithium-based inorganic bentonite, polystyrene-poly(heptaisobutyl cage-type polysilsesquioxane alkylpropyl-methacrylate), maleic anhydride graft, and aromatic polyamide hyperbranched polymer. The filled wax-free adsorption pad obtained by the above technical solution ensures basic performance, further improves acid resistance, reduces wear, breakage, swelling, etc., and improves service life.

POLYMER COMPOSITION, METHOD FOR PREPARING A MOLDED ARTICLE, MOLDED ARTICLE, AND USE OF A POLYMER COMPOSITION. A polymer composition may include from 10 to 90% by weight of at least one virgin polypropylene resin selected from a group consisting of propylene homopolymers, propylene random copolymers, propylene heterophasic copolymers and combinations thereof; and from 10 to 90% by weight of at least one recycled resin; wherein the polymer composition exhibits a melt flow index of 1 to 50 g / 10 min measured in accordance with ASTM D1238 (2.16 kg / 230°C), a flexural modulus at 1% secant measured in accordance with ASTM D790 of 900 to 1700 MPa, and an Izod impact strength at 23°C measured in accordance with ASTM D256 of 15 to 400 J / m.

The invention relates to a composition comprising: a poly(ether ketone ketone), PEKK1; a thermoplastic polyimide having a glass transition temperature greater than or equal to 230°C, TPI; and optionally, a poly(aryl ether ketone), PAEK, PAEK being distinct from PEKK1. PEKK1 represents at least 50% by weight, relative to the total weight of PEKK1, TPI and, where applicable, PAEK, of the composition. PAEK is necessarily present when the TPI content is greater than or equal to 20% by weight, and preferably when the TPI content is greater than or equal to 15% by weight, relative to the total weight of PEKK1 and TPI of the composition.

Embodiments provide a polymer composition for preparing a hard mask and a method of manufacturing a semiconductor device by etching a semiconductor substrate using the same, and a method of preparing a polymer composition for preparing a hard mask, the polymer composition comprising a polymer including a repeating unit represented by Chemical Formula 1.

The present invention relates to a composition comprising 70 wt.-% to 95 wt.-% of a high isotactic propylene homopolymer, more than 2.5 wt.-% and less than 30 wt.-% of a cyclic olefin polymer composition and 0.1 wt.-% to 2.5 wt.-% of a random propylene copolymer solubilizer. The present invention also relates to a film comprising the polypropylene composition. Furthermore, a biaxially oriented film and a capacitor comprising the polypropylene composition are provided.

The application discloses a catalyst for preparing beta-lactone by epoxide carbonylation and a preparation method and application thereof. The catalyst is composed of a homogeneous metal complex and a heterogeneous supported cobalt catalyst. The homogeneous metal complex is one of a porphyrin metal complex and a Schiff base metal complex. The heterogeneous supported cobalt catalyst is composed of a metal center and an organic phosphine ligand polymer connected with the metal center through a coordination bond. The metal center is cobalt, and the organic phosphine ligand polymer is a cross-linked polymer containing a repeating phosphine ligand unit. The metal center is connected with P atoms in the organic phosphine ligand polymer through a coordination bond. The cobalt center forms a stable coordination structure through a ligand, and the coordination layer of cobalt satisfies an electronic saturation state. The cobalt catalyst has high stability, is suitable for a fixed bed or a slurry bed reactor, is favorable for realizing continuous and stable operation of an epoxide carbonylation reaction, and has good industrial amplification potential.

This invention relates to a one-component, moisture-curable composition comprising at least one organic polymer having an average of at least two reactive silane end groups, at least one reactive plasticizer having an average of 1 to 1.5 reactive silane end groups, optional filler, and optional at least one additive. The one-component, moisture-curable composition can be formulated to exhibit excellent properties for use as a non-exudative sealant. This invention also reduces the amount of harmful phthalate-containing plasticizers.

This invention relates to a method for preparing a polymer composition, the method comprising the steps of: (a) processing at a temperature T 混合 (a) Mixing the polymer or polymer blend with the azide derivative of formula (I): N3-Ar(I), wherein Ar is a heteroaromatic group, and (b) heating the mixture from step (a) to a temperature T. R T 混合 The glass transition temperature or melting temperature of the polymer used in step (a) is higher than that of the polymer used in step (a), or the highest glass transition temperature or melting temperature of all polymers present in the polymer blend of step (a) at a content of at least 8% by weight relative to the total weight of the blend, T R Equal to or higher than the decomposition temperature of the azide in formula (I), and T 混合 Strictly below T R The present invention also relates to polymer compositions obtained by the method of the present invention. The present invention further relates to the use of the additive N3-Ar of formula (I) for upgrading recycled plastics or mixtures of plastics.

This invention relates to the field of additive manufacturing, providing a high-strength, low-carbon-residue bicomponent binder, its preparation method, and its application. The bicomponent binder comprises a first component, a second component, a solvent, and a surfactant: the first component is composed of a low molecular weight polymer with a weight-average molecular weight ranging from 2000 to 20000; the second component is composed of a high molecular weight polymer with a weight-average molecular weight ranging from 50000 to 500000. The low molecular weight polymer provides structural support in the initial stage of printing the preform; the high molecular weight polymer is used to improve the strength of the preform and reduce impurity content during heat treatment. This invention significantly improves the mechanical strength of the preform and reduces impurity residue, especially carbon residue, by optimizing the combination and ratio of low and high molecular weight polymers. The final preform exhibits excellent mechanical strength after drying and has extremely low impurity content, greatly improving the quality and performance of additively manufactured products.

The present invention provides a liquid crystal polymer composition which maintains mechanical strength and heat resistance possessed by a liquid crystal polymer, and which is excellent in thin-wall flowability and blister resistance. The present invention relates to a liquid crystal polymer composition which contains 0.1 to 150 parts by mass of talc having a quartz content of 0 to 0.25% by mass, relative to 100 parts by mass of a liquid crystal polymer.

The present disclosure is generally directed to a detectable polymer composition. The polymer composition may include a thermoplastic polymer. Additionally, the composition may include a molecular tag encapsulated within a polymer matrix of the thermoplastic polymer. Also, the molecular tag may include a unique molecular identifier configured to allow detection of the thermoplastic polymer.

A tetrafluoroethylene-based polymer composition for use as an adhesive in electrochemical devices is provided, which can reduce the resistance of electrochemical devices and also provide adhesive sheets with excellent adhesion to substrates. This is further explained by the use of the same composition in adhesives, electrode adhesives, electrodes, and secondary batteries for electrochemical devices. Specifically, a tetrafluoroethylene-based polymer composition for use as an adhesive in electrochemical devices is provided, wherein the tetrafluoroethylene-based polymer composition has polar groups, the content of which is less than 0.020 meq / g relative to the tetrafluoroethylene-based polymer composition, the tetrafluoroethylene-based polymer composition is non-melt processable, and the apparent density is less than 0.50 g / ml.

This invention relates to a photocurable polymer composition for 3D printers, comprising a UV-curable polyurethane oligomer, a photoinitiator, a silane coupling agent, oligomers, and a stabilizer. According to the aforementioned photocurable polymer composition for 3D printers, 3D printed outputs with excellent physical properties such as thermal properties, strength, elastic modulus, and elongation can be manufactured, and 3D printed outputs that can restore their original shape even if deformed through use.

A foamable polymeric mixture is provided that includes a polymer composition and at least one blowing agent. The blowing agent may comprise any blowing agents known not to deplete the ozone or increase the prevalence of global warming, such as CO2, HFO, HFC and mixtures thereof. The foamable polymeric mixture may further includes at least one processing aid comprising an organic phase changing material. The inventive foamable mixture is capable of processing at a pressure range of 800 to 1200 psi (5.5 to 8.3 MPa).

The present disclosure relates generally to modified styrene-maleic anhydride copolymers and lubricants containing them. In various embodiments the disclosure provides a polymer composition that is a reaction product of components comprising: 35-60 parts by weight of a styrene / maleic anhydride copolymer, wherein the styrene / maleic anhydride copolymer comprises: 40-80 wt% styrene residues, and 20-60 wt% maleic anhydride residues, each based on a total weight of the styrene / maleic anhydride copolymer, at least 80 wt% of the styrene / maleic anhydride copolymer being formed of residues of styrene and maleic anhydride; 30-60 parts by weight of a C8-C24 hydrocarbyl primary amine component; and 0.5-5 parts by weight of a polyethyleneimine oligomer component, wherein a total amount of styrene residues, maleic anhydride residues, C8-C24 hydrocarbyl primary amine residues and polyethyleneimine oligomer residues is at least 80 wt% of the polymer composition.

A polyarylether composition (C) comprising: at least one poly (aryl ether ketone) polymer (“PAEK polymer”), at least one poly (biphenyl ether sulfone) polymer (“PPSU polymer”) and / or polyethersulfone (“PES polymer”), at least one electrically conductive fibrous carbon-based filler (“component B1”), and at least one electrically conductive particulate carbon-based filler (“component B2”). An article, particularly for electrostatic dissipative applications, such as a substrate carrier, comprising the polyarylether composition (C). The polymer composition is suitable for electrostatic discharge application.

A bobbin comprising a body portion around which a coil is capable of being wound is disclosed. The body portion comprises a polymer composition containing a polymer matrix that includes a thermotropic liquid crystalline polymer. The polymer composition exhibits a melt viscosity of about 300 Pa-s or less and a deflection temperature under load of about 170° C. or more.