271 results about "4-Methyl-1-pentene" patented technology

Copolymers, especially multi-block copolymer containing therein two or more segments or blocks differing in chemical or physical properties, are prepared by polymerizing propylene, 4-methyl-1-pentene, or other C_4-8α-olefin and one or more copolymerizable comonomers, especially ethylene in the presence of a composition comprising the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

The release liner includes a release layer constituted of at least one polyolefin resin, wherein the release layer has surface irregularities. The surface irregularities of the release layer may be constituted of recesses and protrusions which are irregularly different in shape and have been disposed in irregular arrangement. The release layer preferably has a surface roughness Ra of 1-3 μm. As the polyolefin resin constituting the release layer can be used at least one polyolefin resin selected from the group consisting of polyethylenes, polypropylene, polybutenes, poly(4-methyl-1-pentene), and copolymers of ethylene with one or more α-olefins having 3-10 carbon atoms.

The present invention provides a 4-methyl-1-pentene/α-olefin copolymer being excellent in lightness, stress absorption, stress relaxation, vibration damping properties, scratch resistance, abrasion resistance, toughness, mechanical properties and flexibility, having no stickiness during molding operation and being excellent in the balance among these properties; a composition comprising the polymer; and uses thereof. The 4-methyl-1-pentene/α-olefin copolymer (A) of the present invention satisfies specific requirements, and comprises 5 to 95 mol % of a structural unit (i) derived from 4-methyl-1-pentene, 5 to 95 mol % of a structural unit (ii) derived from at least one kind of α-olefin selected from α-olefins having 2 to 20 carbon atoms excluding 4-methyl-1-pentene and 0 to 10 mol % of a structural unit (iii) derived from a non-conjugated polyene, provided that the total of the structural units (i), (ii), and (iii) is 100 mol %.

The invention discloses a capacitor film containing modified attapulgite and a preparation method thereof. The capacitor film comprises the following raw materials, by weight: 30-40 parts of homogeneous ethylene / alpha olefin copolymer, 25-30 parts of metallocene linear low-density polyethylene resin, 13-18 parts of LDPE low-density polyethylene, 10-15 parts of homo-polypropylene, 3-5 parts of epoxy linseed oil, 2-3 parts of polyvinyl alcohol, 1-2 parts of aluminum hydroxide, 1-2 parts of polyisobutylene, 8-12 parts of diatomite, 1-2 parts of ferrocene, 1.2-1.5 parts of poly-4-methyl-1-pentene, 7-9 parts of modified attapulgite, 0.8-1.2 parts of an antioxidant DLTP, 0.6-0.8 part of tributyl citrate, 1.4-1.8 parts of dioctyl maleate, 4-6 parts of calcium stearate, 1.4-1.8 parts of vinyl tri (beta-methoxy ethyoxyl) silane and 0.8-1.2 parts of modified wood ash. The preparation method provided by the invention is simple; addition of diatomite, modified attapulgite and modified wood ash enhances resistance and air tightness of the film; besides, the capacitor film has characteristics of good pressure resistance, impact resistance, high heat sealing strength and good heat sealing performance.

The invention discloses a capacitor thin film with homo-polypropylene as a substrate and a preparation method of the capacitor thin film. The composition raw materials of the thin film in parts by weight are as follows: 20-30 parts of LDPE (Low Density Polyethylene), 30-40 parts of homo-polypropylene, 3-5 parts of epoxy linseed oil, 2-3 parts of polyvinyl alcohol, 1-2 parts of aluminum hydroxide, 1-2 parts of polyisobutene, 8-12 parts of diatomite, 1-2 parts of dicyclopentadienyl iron, 0.9-1.1 parts of poly-4-methyl-1-pentene, 0.5-0.7 part of permanent white, 9-11 parts of nano-clay, 2.0-2.5 parts of catechol, 1.2-1.6 parts of di(ethylene glycol) benzoate, 1.3-1.8 parts of dibutyl phthalate, 4-6 parts of calcium stearate, 1.5-2.0 parts of vinyl triethoxy silane, and 2.5-3.0 parts of modified tree ash. The thin film provided by the invention is manufactured by taking the homo-polypropylene as a main raw material and the low density polyethylene as an auxiliary raw material, and enabling a plurality of auxiliary additives and the homo-polypropylene as well as the low density polyethylene to be subjected to mixed extrusion, film blowing sizing, and cutting; the preparation method is simple; simultaneously, the diatomite, the nano-clay and the modified tree ash are added into the raw materials to enhance barrier property and air tightness of the thin film; and the thin film has the characteristics of good pressure resistance, good impact resistance, heat seal strength, and good heat seal performance.

The invention provides an environmentally-friendly cable filling material and a preparation method thereof. The material is characterized by comprising the following raw materials by weight parts: 55-59 parts of SG-4PVC resin, 21-24 parts of metallocene linear low-density polyethylene, 3-4 parts of Mo2B5, 4-5 parts of hafnium diboride, 12-14 parts of polyphenylene thioether, 4-6 parts of poly-4-methyl-1-pentene, 32-36 parts of bentonite, 12-14 parts of alumina, 21-24 parts of barium sulfate, 2-3 parts of zinc oxide, 1-2 parts of an accelerator TMTM, 2-3 parts of bis-tetradecene alcohol ester, 2-3 parts of a silane coupling agent KH 550, 1-2 parts of a cross-linking agent TAC, 4-6 parts of epoxy tetrahydro dicapryl phthalate, 1-2 parts of tributyl tin chloride, 10-12 parts of carbon black N 660, 14-17 parts of precipitated silica, and 6-8 parts of modified diatomite. The cable filling material provided by the invention is high in volume resistivity, high temperature resistant, good in insulating property, relatively good in electrical property and good in wear-resistant property.

A battery separator of the invention is obtained by press forming a meltblown nonwoven fabric comprising 4-methyl-1-pentene polymer or a 4-methyl-1-pentene/α-olefin copolymer, the battery separator having an average fiber diameter of 0.8 to 5 μm, a basis weight of 9 to 30 g/m², a porosity of 30 to 60%, and a load at 5% elongation in the MD direction (longitudinal direction) of not less than 1.2 (kg/5 cm width). A lithium ion secondary battery of the invention includes the battery separator.

The invention discloses a capacitor film containing modified talc and a preparation method thereof. The capacitor film comprises the following raw materials, by weight: 57-63 parts of metallocene polypropylene resin, 35-45 parts of bisphenol A polycarbonate, 10-15 parts of homo-polypropylene, 3-5 parts of epoxy linseed oil, 2-3 parts of polyvinyl alcohol, 1-2 parts of aluminum hydroxide, 1-2 parts of polyisobutylene, 8-12 parts of diatomite, 1-2 parts of ferrocene, 1.0-1.5 parts of poly-4-methyl-1-pentene, 5-7 parts of vermiculite, 3-5 parts of modified talcum powder, 0.7-1.3 parts of an antioxidant 1010, 0.7-0.9 part of propylene glycol adipate polyester, 0.3-0.5 part of di(2-ethylhexyl)-4,5-epoxy tetrahydrophthalate, 3-5 parts of calcium stearate and 2.2-2.6 parts of modified wood ash. The preparation method provided by the invention is simple; addition of diatomite, modified attapulgite and modified wood ash enhances resistance and air tightness of the film; besides, the capacitor film has characteristics of good pressure resistance, impact resistance, high heat sealing strength and good heat sealing performance.

A high-performance reflective film comprises a reflective core layer which is composed of polyethylene glycol terephthalate, titanium dioxide particles, polyethylene glycol, poly4-methyl-1-pentene and a benzotriazole ultraviolet absorbent. The reflective film also comprises a diffusion layer which covers the upper surface of the reflective core layer. The diffusion layer is composed of polymethyl methacrylate, MBS resin, polymethyl methacrylate particles, a benzotriazole ultraviolet absorbent and an antistatic agent. The reflective film also comprises an anti-bonding layer which covers the lower surface of the reflective core layer and is composed of polyethylene glycol terephthalate, silicon dioxide particles and an antistatic agent. A preparation method of the reflective film comprises the following steps: A, a diffusion master batch is prepared; B, a reflective master batch is prepared; C, an anti-bonding master batch is prepared; and D, after coextru-lamination, longitudinal stretching is firstly conducted, and transverse stretching is then carried out. A diffusion layer is arranged on one side of the reflective core layer. The diffusion layer has photodiffusion performance, antistatic performance and a function of increasing stiffness and flex-resistance of the reflective film.

A film that has a layer of specified 4-methyl-1-pentene copolymer and has a specified thickness buildup and thermal shrinkage coefficient. There is provided a film excelling in heat resistance and mold release properties, especially a film suitable for use as a mold release film applied in producing of a laminate according to pressure molding. When this film is used as a mold release film in the heating and pressurization steps for manufacturing of flexible printed boards, there can be prevented sticking of coverlay to metal sheet and outflow of adhesive leading to sticking to other members. Moreover, there can be avoided generation of voids in non-printed portions on the board, and contamination of exposed portions, such as terminal portions, of electric circuit by melting outflow of adhesive. Still further, wrinkling of the mold release film can be avoided, so that generation of voids due to follow failure of the mold release film can be avoided and that thus flexible printed boards with good appearance can be obtained.

The invention discloses a butyl rubber for wrapping a capacitor case, which is prepared from the following raw materials: butyl rubber (BBK232), LANXESS Deutschland 9650 ethylene propylene diene monomer, poly-4-methyl-1-pentylene, zinc oxide, nano fluorite powder, nano bentonite, attapulgite, anti-aging agent NBC, anti-aging agent OD, polyamide wax micropowder, accelerator TMTD, accelerator CZ, N-2-(aminoethyl)-3-aminopropyltrimethoxysilane, isopropyl tri(dioctylpyrophosphate)titanate, antioxidant 1035, carbon black N339, N660 carbon black 15-25, dibasic lead phosphite, tributyl citrate, stearic acid, coumarone, propanediol sebacate polyester, benzenesulfonyl hydrazide, ferrocene and modified kieselguhr. According to the reasonable raw material formula, the produced rubber has favorable comprehensive properties and strong binding property with metal; and the rubber has high mechanical properties, fatigue resistance, dynamic ozone resistance, aging resistance and the like, thereby providing a high-intensity protective function for the capacitor.

The invention discloses a polyvinyl chloride (PVC) tube containing modified attapulgite and a preparing method thereof. The PVC tube containing the modified attapulgite is composed of raw materials comprising, based on the weight part ratio, 65-70 parts of SG-7 type PVC resin, 40-45 parts of high density polyethylene, 1-3 parts of poly-4-methyl-1-pentene, 2-4 parts of methyl methacrylate-butadiene-styrene terpolymer, 1.3-1.8 parts of alkylphenol ethoxylates, 2-3 parts of modified attapulgite, 25-30 parts of light calcium carbonate, 1-1.5 parts of dimethyl dimercapto acetic acid ethylhexyl acrylate stannum, 1.3-1.8 parts of diisobutyl phthalate, 0.9-1.1 parts of fungacetin, 1-2 parts of zinc sulfide and 0.4-0.6 part of methyl triethoxysilane. According to the PVC tube containing the modified attapulgite and the preparing method, a formulation is further optimized, the composition of the modified attapulgite is added in the formulation, and therefore dispersion of inorganic fillers is promoted and fluidity of PVC fusant is improved during the manufacturing process of the PVC tube, and furthermore tensile strength and breaking elongation are improved, toughness is good and hardness is low. In addition, the preparing method is simple and effectively applied to every walk of life.

A polyfunctional (methyl) acrylic ester composition is provided to have excellent optical properties of low color dispersibility and high optical transmissivity and to have excellent the balance of various properties needed for an optical lens or prism material. The polyfunctional (methyl) acrylic ester composition maintains excellent optical properties and does not cause reflective index differentiation even under severe and moisture use conditions. A curable resin composition comprises a soluble polyfunctional (meth)acrylic acid ester copolymer (A), and a monomer including at least one functional group containing polymerizable unsaturated double bond (B). The copolymer is manufactured through the copolymerization of monofunctional (meth)acrylic acid ester with a cycloaliphatic structure (a), a monofunctional (meth)acrylic acid ester with alcoholic hydroxy group(b), bifunctional (meth)acrylic acid ester(c), and 2,4-diphenyl-4-methyl-1-pentene(d). The content of component A is 1-70wt%.

In one embodiment, there is a method for storing fluids in a bag that has an inner lining that is essentially sterilized and essentially free of pyrogen. The method comprises heating the bag that is comprised of a polymeric film to at least approximately 253° Celsius. The polymeric film includes a polymer selected from the group of poly(oxy-1,4-phenylene-oxy-1,4-phenylene-carbonyl-1,4-phenylene) (PEEK); polytetrafluoroethylene (PTFE); a perfluoroalkoxy (PFA) polymer; poly(tetrafluoroethylene-co-perfluoromethyl vinyl ether) (MFA); polyperfluoro(ethylene-co-propylene) (FEP); poly(ethylene-alt-chlorotrifluoroethylene) (ECTFE); poly(ethylene-co-tetrafluoroethylene) (ETFE); poly(vinylidene fluoride) (PDVF); tetrafluoroethylene-co-hexafluoropropylene-co-vinylidene fluoride terpolymer (THV); ultra-high molecular weight polyethylene (UHMW PE); (poly(bisphenol A-co-4-nitrophthalic anhydride-co-1,3-phenylenediamine) (PEI); poly(4-methyl-1-pentene) (PMP); and suitable mixtures thereof.

Polymer/carbon nanotube composites including single-wall or multi-wall carbon nanotubes incorporated into the matrix of a polymer are provided. These composites can be used in environments exposed to galactic cosmic radiation. Accordingly, the composites are useful in deep space applications like space vehicles, space stations, personal equipment as well as applications in the biomedical arts and atom splitting research. The composites can be modified with organic dyes containing at least one phenyl ring and the resulting doped composite is useful as a radiation detector. The preferred polymer is poly(4-methyl-1-pentene). At low nanotube concentrations (i.e., about 0.5 wt % or less), the composites exhibit transparent optical qualities. At higher nanotube concentrations (i.e., about 0.6 wt % or more), the composites are non-transparent.

To provide a poly-4-methyl-1-pentene based resin composition which exhibits improved film strength and improved moldability into various molded products while keeping the mold release properties and low water absorbency inherent in poly-4-methyl-1-pentene, and to provide molded products thereof. [Solution] The problem is solved by a poly-4-methyl-1-pentene based resin composition obtained by incorporating 0.1 to 30 parts by weight of a modified poly-4-methyl-1-pentene (C) prepared by grafting a monomer that contains an ethylenic unsaturated bond with 50 to 99 parts by weight of poly-4-methyl-1-pentene (A) and 1 to 50 parts by weight of a polyamide (B) (with the proviso that the sum of (A) and (B) is 100 parts by weight).