1004 results about "Polymer composition" patented technology

The invention provides a patterned photonic crystal laser and a preparation method thereof, the laser comprises a substrate, and a first mask layer, a photonic crystal layer and a second mask layer which are sequentially deposited on the substrate, a light emitting area is etched in the central area of the second mask layer, and transparent conductive layers are deposited on the surface of the second mask layer and the light emitting area; a p-annular electrode is arranged on the surface of the transparent conductive layer on the second mask layer, and an n-annular electrode is arranged below the substrate; the photonic crystal layer is composed of a nanorod array and a polymer filled in gaps of nanorods; holes distributed in a patterned array are etched in the surface of the first mask layer, and nanorods are epitaxially grown in hole areas; the nanorod is formed by sequentially depositing a substrate contact layer, a first waveguide layer, a multi-quantum well layer, a second waveguide layer, a coating layer and a component gradient layer. According to the invention, through collaborative design optimization of all the layers, emission of laser with specific wavelength and preparation of a laser emitting laser with single longitudinal mode, narrow linewidth and stable wavelength are realized.

Multi-layered articles or products comprising layers of filled polymer compositions, methods of making and applications or uses thereof.

The disclosure relates to block copolymer nanoparticles for therapeutic delivery of nucleic acids, and methods therefor. More particularly, the invention relates to polymer nanoparticles, such as reversible addition-fragmentation chain transfer (RAFT) polymer compositions, for delivering miRNAs.

A cross-linked product obtained through crosslinking a polymer composition that contains a rubber component, an inorganic filler and a cross-linking agent and that satisfies conditions (a) to (c): (a) the rubber component contains a conjugated diene-based polymer (A) having, when composition ratios (molar ratios) in the conjugated diene-based polymer (A) of structural units represented by formulae (1) to (4) are p, q, r, and s, respectively, a value α represented by formula (i) of 0.80 or more and 0.97 or less;(b) a blending ratio of the conjugated diene-based polymer (A) is 10% by mass or more relative to a total amount of the rubber component; and (c) a blending ratio of the inorganic filler is 40 to 150 parts by mass relative to 100 parts by mass of the rubber component, wherein the Tg of the cross-linked product is −25° C. or lower.

The invention relates to polymer nanoparticle and DNA nanostructure delivery compositions for non-viral delivery, and methods therefor. More particularly, the invention relates to polymer nanoparticle delivery compositions, such as reversible addition-fragmentation chain transfer (RAFT) polymer compositions, and DNA nanostructure delivery compositions, such as DNA origami compositions, for the delivery of more than one payload, or for the delivery of a nucleic acid construct payload of 3 kB or more, and methods therefor.

The invention provides an olefin polymer composition and application thereof, and relates to the technical field of composite materials. The olefin polymer composition is prepared from the following raw material components in parts by weight: 100 parts of an olefin polymer, 0.5 to 5 parts of an anthraquinone compound and 1 to 5 parts of aspartic ester resin, the structure of the aspartic ester resin contains C8-C24 alkylene and a polyethylene glycol chain segment. The olefin polymer composition has good hydrophilicity, and the treatment effect of the olefin polymer composition on nitrogen-containing sewage can be improved.

The invention belongs to the technical field of medical wound materials, and relates to conductive nanofiber aerogel for preventing and treating stress injury and a preparation method thereof. The conductive nanofiber aerogel comprises nanofiber aerogel, a polypyrrole conductive network and a polydopamine hydrophilic layer, wherein the polypyrrole conductive network and the polydopamine hydrophilic layer are deposited in the nanofiber aerogel; the nanofiber aerogel is composed of nanofibers containing a first methylacryloylated polymer and polylactic acid and a second methylacryloylated polymer, the nanofibers are in staggered lap joint to form a three-dimensional skeleton, and the lap joint is wrapped by the second methylacryloylated polymer. The preparation method comprises the following steps: preparing nanofiber aerogel, and sequentially infiltrating the nanofiber aerogel into a pyrrole / FeCl3. 6H2O solution and a dopamine hydrochloride / Tris-HCl solution to react. The conductive nanofiber aerogel has good structural stability, biological safety, hydrophilic imbibition and pressure / seepage sensing capability, and can play an efficient role in prevention and treatment of pressure injury.

A shipping container including a multilayer composite including a core layer including an assembly and a first cover layer provided on the core layer, wherein the first cover layer includes a first composition having a density of at least 0.903 g / cm3 and including polypropylene and optionally reinforcement fibers such as glass fibers wherein the assembly includes a plurality of elongated foamed elements that are arranged next to one another in one plane and bonded to one another at abutting side faces thereof, wherein the elongated foamed elements have been made by cutting at least one foamed sheet having a top surface and a bottom surface, the at least one foamed sheet having been prepared by a foamed extrusion process and the foamed sheet includes a polymer composition including polypropylene, wherein the cutting is perpendicular to the top surface and the bottom surface of the at least one foamed sheet.

The disclosure relates to block copolymer nanoparticles for therapeutic delivery of nucleotides, and methods therefor. More particularly, the invention relates to polymer nanoparticles, such as reversible addition-fragmentation chain transfer (RAFT) polymer compositions, for delivering miRNAs.

A polymer processing aid (PPA) reduces melt defects in extruded polyolefins in the absence of fluoropolymers. A polymer processing aid comprising a block copolymer having polyamide blocks and polyether blocks reduces melt defects well in a thermoplastic polyolefin such as a linear low density polyethylene (LLDPE). Inclusion of an adjuvant PPA comprised of polycaprolactone, or polycaprolactone diol polymer further improves the melt fracture behavior in a thermoplastic and in the absence of fluoropolymers.

The present invention relates to a polymer composition comprising the following components: A) 5 to 35 wt.-% based on the overall weight of the polymer composition of a recycled polyolefin fabric substrate; wherein said fabric substrate is coated with a polyolefin composition comprising the following components: a1) an ethylene based plastomer with a density determined according to ISO 1183-1 in the range of 0.857 to 0.915 g / cm3 and a MFR2 (190° C., 2.16 kg) determined according to ISO 1133 in the range of 0.5 to 30 g / 10 min; and a2) a propylene based plastomer with a density determined according to ISO 1183-1 in the range of 0.850 to 0.910 g / cm3 and a MFR2 (230° C., 2.16 kg) determined according to ISO 1133 in the range of 0.01 to 30 g / 10 min; B) 65 to 95 wt.-% based on the overall weight of the polymer composition of a homopolypropylene or a recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1; with the proviso that components A) and B) add up to 100 wt.-%. Furthermore, the present invention relates to use of component A) for increasing the Charpy Notched Impact Strength of component B) and to an article comprising the polymer composition according to the present invention.

To provide a polymer composition that allows production of a hose exhibiting high oil resistance, and excellent abrasion resistance and heat resistance.SOLUTION: A polymer composition comprises: (A) a conjugated diene-based polymer, and (B) at least one polymer selected from the group consisting of nitrile rubber, hydrogenated nitrile rubber, and ethylene-vinyl acetate copolymer, wherein the rubber component (A) is a conjugated diene-based polymer having a value α, expressed by the following formula (i), in the range of 0.60 to 0.98, where the composition ratios (molar ratios) of the structural units represented by the following formulas (1), (2), (3), and (4) in the polymer are defined as p, q, r, and s respectively. Formula (i): α=(p+(0.5×r)) / (p+q+(0.5×r)+s).SELECTED DRAWING: None

The invention relates to the technical field of polymer compositions, and discloses a fiber microcrack self-healing composition with a shape memory characteristic, which comprises modified polyester containing thermally reversible dynamic covalent bonds and an asymmetric polyether-polyester block copolymer interface regulator, the melt index ratio of the interface regulating agent to the modified polyester is 1.8-3.2, and the interface regulating agent is distributed on the periphery of the modified polyester to form a core-shell microdomain. By utilizing the rheological gradient among the components, the interface regulating agent forms a low-viscosity flowing layer when the matrix shrinks; and the modified polyester is restrained to directionally migrate towards the tip of the fiber microcrack, so that active closing and densification filling of the crack area are realized, micro holes in the repaired area are eliminated, and the mechanical continuity of the composition in a dynamic environment is kept.

To provide a liquid crystal polymer composition that exhibits excellent compoundability and enhanced thermal conductivity while maintaining mechanical strength, toughness, fluidity, and heat resistance of a liquid crystal polymer.SOLUTION: A liquid crystal polymer composition of the present invention comprises a liquid crystal polymer, a plate-like filler having an aspect ratio of 3 or more, a glass fiber having an average fiber diameter of 5 to 15 μm, and a polybenzazole fiber having an average fiber diameter of 5 to 15 μm.SELECTED DRAWING: None

The invention discloses high-temperature-resistant silicone rubber and a preparation method thereof, and belongs to the field of polymer compositions. The silicone rubber is composed of vinyl-terminated polydimethylsiloxane, fumed silica, hydroxyl silicone oil, a hydrogen-containing silicone oil cross-linking agent, a platinum catalyst, an inhibitor methyl butynol, cerium oxide and zinc oxide whiskers. During preparation, vinyl siloxane and 1 / 2 of white carbon black are subjected to vacuum banburying for 40 min at the temperature of 155 DEG C, the remaining white carbon black and hydroxyl silicone oil are added to be mixed for 50 min at the temperature of 125 DEG C, other components are sequentially added after cooling, and vulcanization is conducted at the temperature of 170 DEG C * 15 MPa. The shore A hardness of the obtained silicone rubber is greater than or equal to 63, the retention rate of elongation at break is greater than or equal to 485%, the retention rate of tensile strength after aging at 350 DEG C for 72 hours is greater than or equal to 86%, the thermal weight loss is 5%, the temperature is greater than or equal to 476 DEG C, the Mooney viscosity is less than or equal to 47, and the silicone rubber has excellent processability and high-temperature stability.

The invention relates to the field of sealant materials, in particular to a rubber sleeve cable and a preparation method thereof. The rubber sleeve cable structurally comprises an inner conductor, an insulating layer, a belting layer, an isolating layer, a shielding layer and an outer sheath from inside to outside in sequence. The insulating layer comprises the following raw materials: an insulating layer matrix, a polymeric composition, a flame retardant, a reinforcing filler, a cross-linking agent, an assistant cross-linking agent and the like. The finally prepared rubber sleeve cable not only can keep excellent flexibility and mechanical strength, but also can obtain good high and low temperature resistance, effectively weakens raw material contradiction among oil resistance, weather resistance, moisture resistance, aging resistance and other characteristics, keeps a good comprehensive performance, and is suitable for popularization and application. And therefore, a good application effect can be kept in multiple application environments, and the existing higher application requirements can be met.

Increasingly, plastics made from fossil raw materials such as petroleum or natural gas are being supplemented or replaced by plastics based on renewable raw materials obtained through biochemical processes. The question of sustainability then also arises for the plastic additives used for these plastics (and for plastics made from fossil raw materials). Therefore, there is a need for plastic additives based on renewable and readily available raw materials that are highly effective, low volatility, and compatible with polymeric substrates.

The invention provides a polymer composition, a polymer film material, a holographic grating, a preparation method of the holographic grating, an optical film material and display equipment. The polymer composition comprises a first polymerizable monomer, a second polymerizable monomer and a film-forming resin. The first polymerizable monomer is a non-liquid crystal monomer; the second polymerizable monomer is a liquid crystal monomer, the second polymerizable monomer comprises an active group, and the second polymerizable monomer can be subjected to a copolymerization reaction with the first polymerizable monomer through the active group under illumination. The refractive index modulation degree of the optical film material can be improved by using the polymer composition.

The present invention belongs to the technical field of batteries, and provides a negative electrode active material, a secondary battery, and an electronic device. The negative electrode active material comprises a silicon-based material and an outer layer material, wherein the outer layer material comprises a conductive agent and a nitrile polymer. The infrared spectrum of the negative electrode active material comprises infrared characteristic peaks of a cyano group. The negative electrode active material comprises nitrogen and silicon; and based on the mass of the negative electrode active material, the mass content of nitrogen is D1%, the mass content of silicon is G%, and 0.02≤D1 / G≤0.5. By forming the outer layer material comprising the conductive agent and the nitrile polymer on the surface of the silicon-based material, the conductivity and the stability of the negative electrode active material can be improved, such that the secondary battery has an excellent cycle capacity retention rate and expansion inhibition performance, and the high-temperature storage performance of the secondary battery can be further improved.

The invention belongs to the technical field of polymer compositions, and particularly relates to a high-weather-resistance artificial turf and a preparation method thereof. The high-weather-resistance artificial turf is prepared from the following components in parts by mass: 125 to 160 parts of matrix resin, 8 to 12 parts of coloring master batch, 6 to 8.5 parts of microcapsule compound, 5.8 to 10 parts of functional additive and 3 to 7 parts of lubricant, wherein the microcapsule is prepared by compounding a shell material obtained by reacting diisocyanate with polyamine and a core material which is a phase change material. The preparation method comprises the following steps: premixing matrix resin, coloring master batch, a microcapsule compound, a functional additive and a lubricant, and carrying out melt extrusion, wire drawing and shaping to obtain the artificial grass. And implanting the artificial grass into the base cloth, and carrying out gum coating, cutting and rolling to obtain the high-weather-resistance artificial turf. The microcapsules and the hydroxypropyl methyl cellulose are doped in the matrix resin, so that the artificial turf still has stable elasticity, strength and wear resistance in complex temperature and humidity environments.

For manufacturing household composting products, Based on the total weight of polylactic acid a) and aliphatic-aromatic biodegradable polyester b), 10 to 85% by weight of at least one polylactic acid a), Based on the total weight of polylactic acid a) and aliphatic-aromatic biodegradable polyester b), 15 to 90% by weight of at least one biodegradable aliphatic-aromatic polyester and Use of polymer compositions containing the above.

Vessel closure (1, 21, 41, 61) with a sealing element (3, 23, 43, 63), wherein the sealing element (3, 23, 43, 63) comprises a polymer composition; the polymer composition comprising ... (a) between 5 wt.% and 50 wt.% of a first polymer, wherein the first polymer is a random copolymer having a Shore D hardness, measured according to DIN ISO 7619-1 at 23 °C, of ​​at least 35, and wherein 1-butene is a comonomer of the first polymer; (b) between 50 wt.% and 95 wt.% of a second polymer, wherein the second polymer is a polyolefin having a Shore A hardness, measured according to DIN ISO 7619-1 at 23 °C, of ​​not more than 90, in particular not more than 85, and wherein 1-butene is a comonomer of the second polymer; and (c) wherein the first polymer and the second polymer are different polymers.

The polyester based polymer composition includes a polyester, a metal oxide, and a metal hydroxide. The polymer composites contains the metal oxide and a metal hydroxide made from melting blending has good mechanical property as well as greater degradability after a required time in the higher temperatures and moisture of downhole conditions. The reinforced polymer composites with glass fibers, and the metal oxide and metal hydroxide made from melting blending has higher mechanical property as well as greater degradability after a required time in the higher temperatures and moisture of downhole conditions. The polymer composites made from melting blending have the required mechanical properties and the degradability so that the polymer composites can be used for degradable or dissolvable component of a downhole tool.

This disclosure relates to a polymer composition comprising at least 95% by weight of post-consumer recycled polypropylene resin based on the total weight of the polymer composition, preferably a melt-processed polymer composition, wherein the ethylene content (C2(CF)) of the crystalline fraction (CF) is in the range of [C2-3.4] to [C2-0.2] by weight, preferably [C2-3.0] to [C2-0.6] by weight, more preferably [C2-2.4] to [C2-1.2] by weight, based on the total weight of the crystalline fraction of the polymer composition as measured by the Crystex analysis described herein; and the total light transmittance measured according to ASTM D1003-13 for a 60 × 60 × 1 mm compression-molded plaque is in the range of 60 to 100%, preferably 65 to 90%, more preferably 70 to 85%. This disclosure further relates to the use of the polymer composition in the manufacture of articles and each article.

The present invention relates to a polymer composition, a polymer slurry, a separator for a battery, and a battery, wherein the polymer composition may comprise a polymer component comprising: a first polymerization unit derived from an N-unsubstituted (meth)acrylamide group-containing monomer; a second polymerization unit derived from an N-2 substituted (meth)acrylamide group-containing monomer; and a third polymerization unit derived from a lactam group-containing monomer having 6 or more ring atoms.

An additive composition comprises phosphate ester anions conforming to a specified structure, aromatic carboxylate anions, optionally cycloaliphatic dicarboxylate anions, aluminum (III) cations, sodium cations, optionally calcium cations, optionally lithium cations, and optionally zinc (II) cations. The anions are present in the additive composition in specified molar percentages. The cations are also present in the additive composition in specified molar percentages.

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 provides an optimal non-aqueous electrolyte secondary battery having high durability against high rate charging and discharging and excellent safety. The non-aqueous electrolyte secondary battery 100 according to the present invention comprises a positive electrode 10, a negative electrode 20 and a separator 30 which is interposed between the positive electrode 10 and the negative electrode 20. The separator 30 has a two-layer structure which is composed of a porous polyethylene layer 34 mainly composed of polyethylene, and a porous polymer layer 32 mainly composed of a polymer having higher oxidation resistance than that of the polyethylene, and an inorganic filler layer 40 including an inorganic filler and a binder is formed on the surface of the polyethylene layer 34 on which the porous polymer layer 32 is not formed.

The present invention relates to a method for preparing an electrical cable comprising a step of applying an insulating layer around at least one elongated electrically conductive element from a polymer composition, wherein mineral precursors are introduced into the polymer composition prior to said application, which are then converted into mineral particles. The invention also relates to cables obtained according to this method that comprise mineral particles within their insulating layer, and which are particularly well suited for the transmission of medium- or high-voltage direct current. Figure for the abstract: NONE

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.