43 results about "Polyether block amide" patented technology

The invention relates mainly to a polymer composition comprising: (a) 55% to 99%, preferably 60% to 95%, advantageously 65% to 90%, and in particular 70% to 85% by weight of polyether block amide (PEBA) having a ratio of the number-average molar mass of the polyamide blocks to that of the polyether blocks of 1.0 or less; (b) 1% to 45% by weight of a modifier selected from among: i. a thermoplastic elastomer in the form of a block copolymer with a ratio D of the number-average molar mass of the rigid blocks to that of the soft blocks of less than 0.8; ii. a crude or crosslinked rubber; and iii. combinations thereof; (c) 0% to 5% by weight of additives; and (d) 0% to 5% by weight of fillers, the sum of the percentages of components (a) to (d) adding up to 100%, and wherein the composition comprises less than 4% by weight of carbon black.

The invention discloses a heat-insulating and ultraviolet-proof protective film and a preparation method thereof, the protective film comprises a heat-insulating and ultraviolet-proof layer, and the heat-insulating and ultraviolet-proof layer comprises the following components: 15-30 parts of fluorinated polyether acrylate; 5 to 15 parts of polyether block amide elastomer; 0.1 to 2 parts of reduced graphene oxide; 0.5 to 3 parts of perfluorodecyl triethoxy silane; 1-8 parts of hydroxylated zinc oxide quantum dots; 2 to 10 parts of a benzotriazole derivative; 0.5 to 5 parts of nano cellulose; 0.1-1 part of a rare earth beta nucleating agent; 20 to 40 parts of a waterborne polyurethane dispersion; 0.5 to 3 parts of a photoinitiator; 1-5 parts of a cross-linking agent; and 50-150 parts of an organic solvent. According to the protective film, through the cooperation of the fluorinated polyether acrylate and the polyether block amide elastomer, the surface energy is relatively low and the stain resistance is excellent while high light transmission is maintained, and the graphene and the quantum dots form a three-dimensional heat conduction-scattering network, so that the infrared radiation reflectivity is improved.

A non-crosslinked polymeric heat shrink tubing including poly(ether-block-amide) (PEBA) and methods for making such non-crosslinked polymeric heat shrink tubing is provided. The non-crosslinked PEBA heat shrink tubing disclosed herein finds application, e.g., as a processing aid and final component in the manufacture of catheters and other medical devices.

A catheter assembly is constructed by reflow bonding an inner liner and an outer layer. The inner liner defines at least one lumen. The inner liner is made of a gamma-irradiated polymeric material that includes a polyether block amide and a gamma radiation activated cross-linking agent.

The present invention provides a multilayer structure intended for transporting, distributing, or storing hydrogen. [Solution] A multilayer structure comprising at least one sealing layer (1) and at least one composite reinforcing layer (2) from the inside out, wherein the innermost composite reinforcing layer is wound around the outermost layer adjacent to the sealing layer, the sealing layer mainly comprises at least one semicrystalline long-chain polyamide thermoplastic polymer P1i (i=1 to n, where n is the number of sealing layers), its Tm is greater than 160°C, and except for one polyether block amide (PEBA), it contains up to 50% by weight of an impact resistance modifier and up to 1.5% by weight of a plasticizer based on the total weight of the composition, and does not contain a nucleating agent, and at least one of the composite reinforcing layers is made of a fibrous material in the form of continuous fibers impregnated with a composition mainly comprising at least one polymer P2j (j=1 to m, where m is the number of reinforcing layers), epoxy resin or epoxy-based resin.

An ultrasound catheter is disclosed. An ultrasound catheter includes a body having a longitudinal axis and a distal end. An array of piezoelectric micromachined ultrasound transducers (pMUTs) is disposed within the distal end of the body. Further, the pMUT array includes a plurality of pMUT array elements arranged on the substrate. Further, an insulating material is disposed at the distal end above the imaging window to provide electrical isolation and transmission of the ultrasound signals. The insulating material corresponds to a polyether block amide (PEBA) or Pebax, or a thermoplastic elastomer (TPE).

A method of separating a gas mixture, including contacting the gas mixture with a membrane and passing a portion of the gas mixture through the membrane. The portion of the gas mixture that passes through the membrane includes carbon dioxide. The membrane includes a poly (ether-block-amide) (PEBAX) and a covalent organic framework (COF). The COF is an optionally substituted COF-316 and the COF is dispersed in a matrix of the PEBAX to form the membrane. The membrane includes 0.1-5 wt. % of the COF relative to a total weight of the membrane.

A mixture contains at least one amino-regulated polyether block amide (PEBA) and at least one poly(meth)acrylate selected from poly(meth)acrylimides, polyalkyl(meth)acrylates, and mixtures thereof. The mass ratio of PEBA to poly(meth)acrylate is 95:5 to 60:40. The polyalkyl(meth)acrylate contains 80% by weight to 99% by weight of methyl methacrylate (MMA) units and 1% by weight to 20% by weight of C1-C10-alkyl acrylate units, based on the total weight of polyalkyl(meth)acrylate. The mixture can be processed to give foamed mouldings. The mouldings can be used in footwear soles, stud material, insulation or insulating material, damping components, lightweight components, or in a sandwich structure.

The instant disclosure relates to textile materials having an acid reactive functionalized polymer layer and a non-acid reactive functionalized layer coupled thereto. The acid reactive functionalized polymer layer may include: a polyamide polymer that captures and neutralizes acidic molecules; a hydrophilic polyether block amide copolymer; a maleic anhydride-grafted ethylene copolymer; and a non-halogenated flame retardant. The acid reactive functionalized polymer layer is fire resistant, acid neutralizing, and allows water vapor to transfer therethrough. The non-acid reactive functionalized layer and acid reactive functionalized polymer layer are free of per- and polyfluoroalkyl substances. The polyamide may include Nylon 12, Nylon 6, or Nylon 6,6 functionalized with an amine (e.g., a pyridine derivative and / or a halogenated-dimethylalkylamine) having a nitrogen that captures and neutralizes acidic molecules. The halogenated-dimethylalkylamine may include a general chemical formula of (CH3)2N—R—X, where R is an alkyl containing 1-12 carbon atoms, and X is chlorine or bromine.

The present invention relates to a method for preparing a filtration membrane, comprising the steps of: preparing a first solution by dissolving at least polyamide 6 and a polyether block amide in formic acid wherein the weight ratio of polyamide 6 to polyether block amide is limited to 5: 1; preparing a second solution by adding acetic acid to the first solution wherein the weight ratio of acetic acid to formic acid is limited to 3: 1 and the weight ratio of polyamide 6 to polyether block amide in the second solution is limited to 15 wt%; and electrospinning the second solution, thereby depositing fibers comprising polyamide 6 and polyether block amides on a substrate selected from polyethylene terephthalate. The invention also relates to a filtration membrane prepared by said method.

The invention mainly relates to a footwear cleat, in particular for sports footwear, made of a composition comprising, by weight relative to the total weight of the composition: (a) 50% to 100% of at least one polyether block amide (PEBA) comprising polyamide blocks and polyether blocks, wherein the polyether blocks comprise on average more than 50% of ether units comprising at least 3 carbon atoms per oxygen atom; (b) 0 to 50% of fillers; and (c) 0 to 5% of additives, wherein the composition has a Shore hardness of less than 100A.

The application discloses a nylon composite material, which comprises the following components in parts by weight: aliphatic nylon 60-80 parts; MCA flame retardant 15-35 parts; polyethylene glycol 5-10 parts; and polyether block amide 4-10 parts. The MCA with specific free cyanuric acid content is used in the application, and the MCA generates inert gas due to the high temperature generated by an electric arc in the IPT test, which is beneficial to the rapid outward diffusion of the electric arc. Meanwhile, the polyether block amide as a charge dissipating agent can reduce the electric arc energy and guide the rapid diffusion of the electric arc. Meanwhile, the introduction of the polyethylene glycol can improve the water absorption of the nylon composite material, and the electric arc diffusion is synergized, so that the IPT is further improved. Meanwhile, the nylon composite material has a flame retardancy of 0.8mm V-0.

This invention discloses a medical catheter with a composite sandwich structure and its preparation method, comprising a catheter base and a sandwich composite structure bonded to the outer surface of the catheter base. The sandwich composite structure, from the inside out, comprises: an inner polyimide layer coated on the outer surface of the catheter base; a polyether block amide intermediate layer coated on the outer surface of the inner polyimide layer; and an outer polyimide layer coated on the outer surface of the polyether block amide intermediate layer. The inner polyimide layer, the polyether block amide intermediate layer, and the outer polyimide layer are formed into an integral structure through a combination of chemical bonding and physical interlocking. This invention achieves multi-layer functional synergy while ensuring strong interlayer bonding, thereby improving the overall performance of the catheter in complex vascular environments. It exhibits excellent pushing force, torsional control, flexibility, and flexural strength, with a smooth inner wall and structural stability.

An embodiment of the present invention relates to a film comprising a polyether block amide copolymer resin and a polyvinyl acetal resin, the film having a yellowness change value (dYI) represented by formula 1 after exposure to light for an exposure time of 120 hours, the light having a wavelength of 310 nm and an output of 0.68 W / m2, and the yellowness change value of 2 or less. [Formula 1] dYI = YI2-YI1. In formula 1, YI1 is the yellowness value of the thin film before being exposed to the light, and YI2 is the yellowness value of the thin film after being exposed to the light for the exposure time. The film according to an embodiment can maintain excellent optical properties and mechanical properties even when exposed to ultraviolet light for a long period of time.

The invention relates mainly to a shoe sole, in particular an outsole, made of a composition comprising, by weight relative to the total weight of the composition: 50 to 100% of at least one polyether block amide (PEBA) comprising polyamide blocks and polyether blocks, wherein the polyether blocks comprise on average more than 50% of polyether blocks, wherein the polyether blocks comprise on average more than 50% of ether motifs having at least 3 carbon atoms per oxygen atom; 0 to 50%, preferably 5 to 40% and in particular 10 to 30% of fillers; and 0 to 5%, preferably 0.1 to 4% and in particular 1 to 3% of additives in which the composition has a Shore hardness of less than 100A and a density greater than 0.85, and in which PEBA has a number-average molar mass Mn as measured by size exclusion chromatography according to ISO 16014-1:2019 of between 10,000 and 70,000 g / mol.

A gas sampling line having a channel for conducting respiratory gases from a patient respiratory interface to a gas monitor, the gas sampling line comprising, i.a., a gas sampling tube comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide. Use of a tube comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide, for sampling of respiratory gases; and a method for sampling of respiratory gases, the method comprising conducting respiratory gases through such a tube. A gas analysis system for analysing respiratory gases, comprising a gas sampling line as defined above and a gas monitor connectable to the gas sampling line.

The application discloses a polypropylene decorative film for floor surface decoration and a preparation method thereof. The polypropylene decorative film is composed of a polypropylene base film layer, a printing layer, a breathable wear-resistant layer and a back adhesive layer. The breathable wear-resistant layer comprises 30-40 parts of polyether ether ketone resin, 15-25 parts of polyether block amide elastomer, 15-25 parts of polyhedral oligomeric silsesquioxane, 15-25 parts of wear-resistant filler, 4-5 parts of photoinitiator, 0.1-8 parts of matting powder, 1-3 parts of leveling agent and 0.1-0.5 parts of defoaming agent. The wear-resistant filler is treated by a coupling agent. The polypropylene decorative film for floor surface decoration is combined with the polyether ether ketone resin, the polyhedral oligomeric silsesquioxane, the polyether block amide elastomer and the wear-resistant filler. Under the action of the photoinitiator, polymerization, cross-linking and other reactions occur, so that the polypropylene decorative film has good breathability, better wear resistance, scratch resistance and impact toughness.

The invention provides a preparation method of a soft skin-friendly EVA composite material, which comprises the following steps: S10, weighing raw materials including matrix resin, a modified component, a compatilizer and a functional aid; the matrix resin comprises an ethylene-vinyl acetate copolymer and an ethylene-alpha-olefin copolymer; the modified component comprises polyether block amide and halogenated butyl rubber; the compatilizer comprises a hydrogenated styrene thermoplastic elastomer; s20, carrying out first-stage high-temperature mixing on the raw materials except the cross-linking agent and the foaming agent, and controlling the temperature of the material to be higher than the melting point of the polyether block amide when the mixing is finished, so as to obtain a primarily mixed rubber material; s30, carrying out second-stage dispersion mixing on the primarily mixed rubber material, and adding a cross-linking agent and a foaming agent in the mixing process to obtain an unfoamed rubber sheet; s40, carrying out cross-linking foaming on the unfoamed rubber sheet under heating and pressurizing conditions; and S50, after the set foaming time is up, the pressure is relieved, the rubber sheet is expanded, and the expanded foaming body is pressurized, cooled and shaped. The EVA composite material prepared by the preparation method has good skin-friendly touch feeling while keeping soft, and has better rebound resilience and fatigue resistance.

The invention discloses a high-strength nylon composition with an efficient electromagnetic shielding function and a preparation method thereof, and belongs to the technical field of polymer composite materials. The composition comprises the following components in parts by weight: 37-59 parts of nylon resin, 20-30 parts of carbon fiber, 10-20 parts of polyether block amide, 8-22 parts of conductive filler and 0.5-5 parts of other auxiliaries. A hard segment, namely a polyamide segment, of polyether block amide in the composition can be compatible with a nylon matrix on a molecular level, and a soft segment, namely a polyether chain segment, can generate very strong polar interaction with surface polar groups of conductive fillers such as carbon fibers and conductive carbon black, so that the dispersity of the conductive fillers in nylon resin is improved; according to the invention, polyether block amide is added into the conductive filler, so that the electron / ion conduction efficiency of the material is improved, the defect of an electromagnetic conduction network is overcome, a point-line-plane composite electromagnetic conduction network synergistically formed by conductive filler-carbon fiber-polyether block amide is constructed in the material, and the electromagnetic shielding performance of the material is greatly improved.

The invention relates to the field of lithium ion batteries, in particular to a binder and a preparation method thereof and a lithium ion battery, the binder comprises a thermoplastic polymer and a polar functional group grafted on a molecular chain of the thermoplastic polymer, and the molecular chain of the thermoplastic polymer comprises a dynamic chemical bond; wherein the thermoplastic polymer comprises at least one of styrene-ethylene-butylene-styrene, polyisoprene-block-polyethylene oxide, polybutylene terephthalate-block-polyethylene glycol and polyether block amide, and the dynamic chemical bonds comprise at least one of Diels-Alder reversible bonds and metal ion coordination bonds. The polar functional group comprises at least one of acrylic acid, maleic anhydride, carboxyl and sulfonic acid group. The binder provided by the invention has excellent mechanical toughness and strong interface chemical binding force, and is beneficial to improving the electrochemical performance of the lithium ion battery.

This invention provides a halogen-free flame-retardant waterproof layer, a halogen-free flame-retardant waterproof membrane, and a method for preparing the same, belonging to the field of waterproof membranes and flame-retardant materials. The halogen-free flame-retardant waterproof layer comprises, by weight, 10-30 parts high-density polyethylene resin, 20-60 parts medium-density polyethylene resin, 0-10 parts linear low-density polyethylene resin, 5-20 parts ethylene-vinyl acetate copolymer resin, 5-10 parts ethylene-acrylic acid copolymer compatibilizer, 5-50 parts condensed-phase halogen-free flame retardant, 0.1-3 parts polyether block amide elastomer antistatic agent, 0.1-3 parts rare earth coupling agent, 0.1-1.5 parts dispersant, 0.1-1.5 parts antioxidant, and 0.1-1.5 parts light stabilizer; wherein the condensed-phase halogen-free flame retardant is selected from at least one of phosphorus-based flame retardants, phosphorus-nitrogen intumescent flame retardants, and silicon-based flame retardants. The waterproof membrane has a multi-layered structure, including a strong flame-retardant waterproof layer and a non-flame-retardant or weak flame-retardant waterproof layer, with the strong flame-retardant waterproof layer and the non-flame-retardant and / or weak flame-retardant waterproof layer being distributed alternately.

This invention discloses a toughened nylon 6 composite material and its preparation method. The composite material composition comprises the following components in parts by weight: 79.9–89.7% nylon 6, 5–10% polyether block amide copolymer, 5–15% Surlyn resin, and 0.1–0.3% copper-based antioxidant. The preparation process includes two steps: premixing and twin-screw compounding and granulation. The polar ionic structure of Surlyn resin provides good compatibility with the polar nylon 6 matrix. The high-toughness Surlyn resin and polyether block amide copolymer exhibit higher toughness than nylon 6, thus toughening nylon 6 while maintaining the composite material's high strength and rigidity. If this composite material is combined with fiber-reinforced materials, its application in the field of high-strength, high-toughness structural materials is expected to be further expanded.

The invention relates to a dry composition comprising at least one active material, at least one binder, optionally at least one electrically conductive agent, characterized in that the at least one binder comprises a fluoropolymer and a polyamide thermoplastic polymer or a polyether block amide or a mixture thereof.

The present invention provides a multilayer hollow body suitable for storing or transporting aqueous media, the hollow body having an outer layer comprising a polyether block amide.

This invention belongs to the field of solid-state battery technology, specifically relating to a Pebax / PEO composite solid-state battery and its preparation method. The Pebax / PEO composite solid-state battery includes an integrated positive electrode, a negative electrode side film, and a lithium metal sheet. The integrated positive electrode includes a positive electrode and a composite film layer above the positive electrode. The integrated positive electrode is obtained by dissolving a polyether block amide copolymer and a lithium salt, adding inorganic fillers, stirring until homogeneous, casting the resulting composite slurry onto the positive electrode, and then drying. The negative electrode side film is obtained by dissolving polyethylene oxide and a lithium salt, adding inorganic fillers, stirring until homogeneous, casting, and drying. The bilayer composite film, as a solid electrolyte, can better adapt to the high oxidizing properties of the positive electrode material and the high reducing properties of the negative electrode lithium metal, broadening the electrochemical window, improving ionic conductivity and the energy density of the solid-state battery, and ensuring a longer cycle life.

The non-softening thermoplastic polyurethane (TPU) compositions described herein have good rebound resilience while maintaining a good combination of other properties, including hardness, low-temperature flexibility, abrasion resistance, weatherability, low density, and combinations thereof. The degree of softening is independent of the hardness of the TPUs of the disclosed technology. The combination of properties allows the TPU compositions described herein are useful materials for applications where polyamide copolymers (COPA) and / or polyether block amide (PEBA) materials have traditionally been used over TPU.

The invention relates to the technical field of hot melt adhesives, and discloses a hot melt pressure-sensitive adhesive containing polyether block amide resin and a preparation method and application thereof.The hot melt pressure-sensitive adhesive is prepared from, by weight, SIS rubber, SBS rubber, hydrogenated resin, EVA, the polyether block amide resin, plasticizer, silane coupling agent and antioxidant, the melting point of the polyether block amide resin is 140-150 DEG C, the melting point of the hydrogenated resin is 150-200 DEG C, and the melting point of the silane coupling agent is 150-200 DEG C. The ratio of EVA to polyether block amide resin is 1: (1.25-2.5), and the ratio of SIS rubber to SBS rubber is (1.5-2.5): 1. By introducing polyether block amide resin as a functional weather-resistant modifier and adopting EVA as a compatilizer, a stable phase structure based on chemical bonding is constructed, so that the problem of long-acting weather resistance of the SIS / SBS-based hot-melt pressure-sensitive adhesive in an outdoor severe environment is solved, and the hot-melt pressure-sensitive adhesive has good weather resistance while bearing severe high and low temperature cycles of-30 DEG C to 120 DEG C; the ultraviolet-resistant adhesive has excellent ultraviolet resistance and keeps extremely high peel strength and sealing performance.

An extrudable polymer composition and methods of making and using the extrudable polymer composition are disclosed. The composition can include from 5 wt.% to 99 wt.% of a recycled polyethylene and from 500 ppm to 5,000 ppm of an added polyether block amide based on the weight of the extrudable polymer composition. A method of reducing die lip build-up during extrusion of a polymer composition comprising recycled polyethylene is also disclosed.

The present invention relates to a method for preparing a filter membrane, comprising the following steps: preparing a first solution by dissolving at least polyamide 6 and polyether block amide into formic acid, wherein the weight ratio of polyamide 6 to polyether block amide being limited by 5:1; preparing a second solution by adding acetic acid to the first solution, wherein the weight ratio of acetic acid to formic acid being limited by 3:1, and the weight ratio of polyamide 6 and polyether block amide in the second solution being limited by 15 wt %; and electrospinning the second solution, whereby fibers comprising polyamide 6 and polyether block amide being deposited over substrate selected from polyethylene terephthalate. The present invention also relates to a filter membrane prepared by the method.

The invention relates to a drug delivery device and a method of manufacturing a medical device. The present invention provides a drug delivery device, the drug delivery device comprising: a matrix comprising a hydrophilic polyether block amide copolymer, the hydrophilic polyether block amide copolymer comprising PEG; a coating comprising a layer of therapeutic agent forming an outer surface of at least a portion of the drug delivery device, the layer of therapeutic agent contacting the hydrophilic surface of the matrix and comprising a particulate hydrophobic therapeutic agent and a cationic agent. Additional drug delivery devices and methods of making medical devices are also provided.