27 results about "Propylene Polymers" patented technology

The application discloses a light reflection and enhancement film and an enhanced photovoltaic module with the same, the light reflection and enhancement film comprises a buffer layer and a substrate layer, the preparation raw materials of the buffer layer comprise an ethylene polymer, a mesoporous composite material, a filler and an additive, and the preparation raw materials of the substrate layer comprise a propylene polymer alloy, the mesoporous composite material, the filler and the additive. The light reflection and enhancement film and the enhanced photovoltaic module with the same have the advantages that the mesoporous material is compounded with the nanometer material to form the mesoporous composite material, and then the mesoporous composite material is used for preparing the buffer layer and the substrate layer, so that the reflectivity of the ultraviolet region of 330-380 nm, the adhesion between the buffer layer and the battery and the adhesion between the substrate layer and the adhesive film are improved, the light reflection and enhancement film is applied to the gap position between the battery pieces on the photovoltaic battery, the battery hidden crack and the fragments can be avoided, and the module power can be greatly improved compared with the application on the glass.

A nonwoven fabric (NF) comprising a multilayer structure, the multilayer structure comprising: i) at least one meltblown layer (M) comprising meltblown fibers (MBF) comprising a first propylene polymer (PP1) having: a) an amount of 2,1- region defects in the range of 0.0 to 0.1 mol%; and b) a melting temperature T in the range of 155 to 170°C. m ii) at least one spunbond layer comprising spunbond fiber (SBF) comprising a second propylene polymer (PP2) having: a) an amount of 2,1- region defects in the range of 0.4 to 1.5 mol%; and b) a melt temperature T in the range of 145 to 160 °C. m The melting temperature T of the first polypropylene polymer m (PP1) has a higher melting temperature than the first polypropylene polymer (T). m (PP2) at least 5.0°C.

The purpose of the present invention is to provide an airbag storage cover that has excellent long-term heat resistance, long-term light resistance, and fogging resistance while maintaining high-temperature strength and low-temperature impact resistance. The present invention relates to an airbag storage cover containing a thermoplastic elastomer composition containing 10-300 parts by mass of the following component (B) with respect to 100 parts by mass of the following component (A). Component (A): Propylene-based polymer. Component (B): Olefin-based block copolymer containing an ethylene polymer block and an ethylene 1-octene copolymer block, and satisfying the following condition (X1). Condition (X1): In the proportion of triad monomer sequences determined by 13C NMR measurement, the sum of OOO, OOE, and EOO is 6.0-20.0% (where E represents an ethylene monomer unit and O represents an octene monomer unit).

The invention is directed to a polypropylene composition having improved scratch resistance properties, wherein the polypropylene composition comprises (i) ≥50.0 wt. % and ≤90.0 wt. % of a propylene polymer, (ii) ≥5.0 wt. % and ≤30.0 wt. % of an elastomeric ethylene alpha-olefin co-polymer, and (iii) ≥0.1 wt. % and ≤20.0 wt. % of a poly(siloxane-carbonate) block copolymer, with regard to the total weight of the polypropylene composition. The invention further relates to a process for preparing such polypropylene composition and to an article comprising the polypropylene composition.

This invention relates to laminated articles of nonwoven fabrics made of crimped composite fibers and articles comprising such laminated articles. This invention provides a nonwoven laminate comprising at least two layers, wherein at least one layer of the laminate comprises a nonwoven fabric of crimped composite fibers, the crimped composite fibers comprising: a first propylene polymer and a second propylene polymer, wherein the melting point of the second propylene polymer is 30°C or more higher than that of the first propylene polymer, the melting point being measured by differential scanning calorimetry (DSC), the melt flow rate (MFR: measurement temperature 230°C, load 2.16 kg) ratio (second polymer / first polymer) of the first and second propylene polymers is 1.7 or greater, the melt flow rate being measured according to ASTM D1238, and the component ratio expressed as the weight ratio of the first propylene polymer / second propylene polymer is 50 / 50 to 10 / 90, wherein the nonwoven fabric has a thickness of 0.484 mm or greater, 10 EA / 10 The curl count is 50 mm or greater, and the longitudinal (MD) stiffness is 50 mm or less in the adhesive area of ​​the embossed pattern.

The present disclosure relates to a polyethylene composition particularly suited for blow molding, comprising: A) from 99.5% to 94% by weight of a recyclate polyethylene component; and B) from 0.5% to 6% by weight of a polypropylene composition comprising from 8% to 30% by weight of a propylene polymer fraction (a) and from 70% to 92% by weight of a polymer fraction (b) comprising one or more copolymer(s) of ethylene containing an amount of units deriving from ethylene equal to or lower than 40% by weight, wherein the polymer fraction (b) comprises a fraction soluble in xylene at 25°C equal to or greater than 60% by weight.

The present invention relates to a cable comprising at least one layer comprising a polypropylene composition comprising (A) from 80.0 to 99.0 wt.-%, preferably from 82.5 to 97.2 wt. %, most preferably from 85.0 to 95.0 wt.-% of a copolymer of propylene and comonomer units selected from ethylene and alpha-olefins having from 4 to 12 carbon atoms having a total amount of comonomer units of from 10.0 to 16.0 wt %, preferably from 11.0 to 15.0 wt %, most preferably from 12.0 to 14.0 wt %, based on the total amount of monomer units of the copolymer of propylene (A); a melt flow rate MFR2 of from 0.5 to 2.5 g / 10 min, preferably from 0.8 to 2.3 g / 10 min, still more preferably from 1.0 to 2.0 g / 10 min and most preferably from 1.2 to 1.7 g / 10 min; a xylene cold soluble (XCS) fraction in a total amount of from 25.0 to 50.0 wt %, preferably from 27.5 to 45.0 wt %, more preferably from 30.0 to 42.5 wt % and most preferably from 32.5 to 40.0 wt %, based on the total weight amount of the copolymer of propylene (A); and (B) from 1.0 to 20.0 wt.-%, preferably from 2.5 to 17.5 wt %, most preferably from 5.0 to 15.0 wt.-% of a propylene polymer having a density of from 855 to 890 kg / m, preferably from 860 to 885 kg / m3, mot preferably from 865 to 880 kg / m3.

An article including a foamed sheet prepared by foam injection molding of a polymer composition including a high melt strength polypropylene, wherein the high melt strength polypropylene has a melt strength determined in accordance with ISO 16790:2005 at a temperature of 200° C., using a cylindrical capillary having a length of 20 mm and a width of 2 mm, a starting velocity v0 of 9.8 mm / s and an acceleration of 6 mm / s2 of ≥30 cN.

This invention relates to a resin composition wherein the content of a propylene polymer (A) satisfying specified conditions is 10 to 99.9 parts by mass, the content of a propylene polymer (B) satisfying specified conditions is 0 to 40 parts by mass, the content of a polyolefin (C) containing structural units derived from unsaturated carboxylic acids and / or their derivatives is 0.1 to 20 parts by mass, and the content of an ethylene polymer (D) satisfying specified conditions is 0 to 40 parts by mass (wherein, the total content of components (A), (B), (C) and (D) is set to 100 parts by mass).

This application discloses a three-layer co-extruded infusion membrane for liquid-liquid multi-chamber bags and its preparation method. The three-layer co-extruded infusion membrane provided in this application comprises an outer layer, a middle layer, and an inner layer. The outer layer material is a mixture of homopolymer polypropylene, a low-ethylene-content ethylene-propylene polymer, and SEBS or SEPS. The middle layer material is a mixture of a high-ethylene-content ethylene-propylene polymer, a low-ethylene-propylene polymer, and SEBS or SEPS. The inner layer material is a mixture of an ethylene-propylene-butene polymer, a high-ethylene-content ethylene-propylene polymer, a low-ethylene-propylene polymer, and SEBS or SEPS. The infusion membrane provided in this application exhibits excellent flexibility, stable solid weld strength, and weak weld strength.

Please replace the abstract in the specification as filed with the below paragraph as follows: Provided are a molded article having excellent hinge resistance and a propylene resin composition capable of producing the same. A propylene resin composition contains a propylene polymer A′ having an isotactic pentad fraction of less than 0.981; and a propylene polymer C having an isotactic pentad fraction of 0.981 or more, and a molded article contains the same.

A multilayer film includes a first layer (A), a third layer (C), and a second layer (B) sandwiched between the first layer (A) and the third layer. Each layer (A, B, C) includes at least one propylene polymer selected from propylene homopolymers, multiphase polymers, propylene copolymers having at least one comonomer selected from ethylene and linear or branched C4-C12 α-olefins, and mixtures thereof. In the second layer (B), the propylene polymer has a melt flow rate (MFR) of not more than 5 g / 10 min, wherein the melt flow rate is determined according to ISO 1133.

The objective is to provide an internal donor component suitable for solid titanium catalyst components, which, when used primarily in solid titanium catalyst components, can produce propylene polymers with extremely high stereoregularity with high productivity (high activity). [Solution] For example, an ester compound represented by the following formula (7). TIFF2026086704000258.tif70135

This invention relates to an external electron donor composition and its application. The composition is prepared by mixing the components of raw materials; wherein the raw materials include an alkylaluminum compound and two or more external electron donors, and the molar ratio of the two or more external electron donors to the alkylaluminum compound is 1:(0.01–0.1). One embodiment of the external electron donor composition of this invention can be used to prepare a catalytic system for propylene polymers, achieving a comprehensive optimization of high reactivity and high polymer performance.

The present invention provides a polypropylene resin composition that offers excellent fluidity and moldability, as well as the ability to mold products with superior impact resistance. [Solution] The polypropylene resin (A) contains a continuous phase made of a propylene polymer (a1) and a rubber phase made of an ethylene-propylene copolymer (a2), and the polypropylene resin (B) contains a continuous phase made of a propylene polymer (b1) and a rubber phase made of an ethylene-propylene copolymer (b2), wherein the mass ratio (A):(B) of the polypropylene resin (A) to the polypropylene resin (B) is 90:10 to 10:90, the total content of copolymer (a2) and copolymer (b2) is 23% by mass or more of the total mass of the polypropylene resin (A) and the polypropylene resin (B), and the MFR of the polypropylene resin composition at a temperature of 230°C and a load of 2.16 kg is 70 g / 10 min or more.

The application belongs to the technical field of polymers, and discloses a thermoplastic semiconductive composition, a preparation method and application thereof, the semiconductive composition containing a functional monomer grafted modified propylene polymer, an elastomer, a conductive filler and an antioxidant; the content of the functional monomer grafted modified propylene polymer is 10-60 wt%, the content of the elastomer is 10-60 wt%, and the content of the conductive filler is 15-45 wt% based on the total weight of the functional monomer grafted modified propylene polymer, the elastomer and the conductive filler; the content of the functional monomer structure unit in the grafted state in the semiconductive composition is 1-10 wt%. The semiconductive composition has good mechanical properties, excellent conductive properties, and can effectively reduce charge injection and reduce the electric field distortion rate of the insulating layer.

The present invention belongs to the technical field of propylene polymerization, and more particularly to catalysts for olefin polymerization, and propylene polymers containing ultra-high molecular weight polypropylene components and having adjustable isotactic properties, and methods for producing the same. The method comprises the steps of reacting propylene in the presence of hydrogen and a polymerization catalyst, or reacting propylene with one or more arbitrarily selected comonomers, and a mixture D of a hydrogenation catalyst and an external electron donor. H The invention includes the step of polymerizing at least a portion of the resulting material stream containing polypropylene component I for 0.05 to 3.0 hours in a pipeline located outside the reactor or in a subsequent reactor connected in series thereto, in the presence of a hydrogenation catalyst, thereby obtaining a polypropylene polymer product containing 0.03 to 15.0% by mass of ultra-high molecular weight polypropylene component, wherein the molar ratio of the hydrogenation catalyst to the total amount of hydrogen is 1 / 10000 to 1 / 100. In this invention, a polypropylene product containing a relatively low content of ultra-high molecular weight component can be prepared, and the isotacticity of the ultra-high molecular weight polypropylene component can be flexibly adjusted.

This invention belongs to the field of polypropylene technology, specifically relating to a rigid-toughness balanced polypropylene composition and its preparation method. The rigid-toughness balanced polypropylene composition comprises a first propylene polymer component and a second propylene polymer component; the first propylene polymer component contains 0.03-5.00 wt% of a weight-average molecular weight M. W Ultra-high molecular weight polypropylene with a molecular weight of ≥10,000,000; number average molecular weight M of ultra-high molecular weight polypropylene components. n Peak molecular weight M of propylene polymer p The ratio is ≥10; based on 100 parts by weight of the total weight of the rigid-toughness balanced polypropylene composition, the content of the first propylene polymer component is 5-25 parts by weight, and the content of the second propylene polymer component is 75-95 parts by weight; the rigid-toughness balanced polypropylene composition prepared by the present invention has both high rigidity and toughness.

The object of the present invention is to obtain a resin composition that further improves the adhesion to a substrate layer when used as an adhesive layer in a laminate, and a laminate containing layers formed from the resin composition that exhibits superior interlayer adhesive strength. The present invention relates to a resin composition and a laminate containing layers of the resin composition, the resin composition being characterized by containing: 5 to 70 wt% of an propylene polymer (A); 30 to 95 wt% of a soft propylene polymer (B); 0.1 to 20 wt% of an propylene polymer obtained by grafting modification with an olefinic unsaturated monomer (C); 0 to 20 wt% of polyethylene (D); and 1 to 30 wt% of an ethylene-α-olefin random copolymer (E), wherein the total amount of (A), (B), (C), (D), and (E) is set to 100 wt%.

A polypropylene composition (I) made from or containing:(A) at least 90 wt. % of a propylene polymer made from or containing:(a) 20-44 wt. % of a propylene-hexene copolymer,(b) 25-45 wt. % of a propylene-hexene-ethylene terpolymer(c) 25-50 wt. % of a propylene-ethylene copolymer;whereinthe Melt Flow Rate of components (a)+(b)+(c) ranges from 3.5 to 12.0 g / 10 min;the xylene soluble content of the propylene polymer (A) ranges from 13.0 to 25.0% by weight, andthe melting point of the propylene polymer (A) ranges from 122° C. to 132° C., and(B) up to and including 10.0% by weight of a polybutene,wherein the amounts of (A) and (B) are based on the total weight of (A)+(B).

The propylene copolymer composition comprises a propylene copolymer of 70-95% by weight of propylene and 3.0-25% by weight of at least two α-olefin comonomers. α-olefin comonomers with lower molar masses may be present in amounts of 0.3-10% by weight. The propylene copolymer composition may have a melt flow rate (MFR) in the range of 5.4-250 g / 10 min, a polydispersity index (PI) in the range of 1.0-3.7, and an analytical temperature-controlled elution fractionation full width at half maximum (ATREF FWHM) in the range of 1.0-15.4°C. The method comprises reacting propylene and at least two α-olefin comonomers in one or more vertically stirred gas-phase reactors, and extruding with additives and optionally bis-breaking to produce the propylene copolymer composition.

The invention belongs to the technical field of polymers, and discloses an environment-friendly peelable semiconductive shielding material and a preparation method and application thereof, the semiconductive shielding material contains a functional monomer graft modified propylene polymer, an ethylene copolymer, a conductive filler and an antioxidant; based on the total weight of the functional monomer graft modified propylene polymer, the ethylene copolymer and the conductive filler, the content of the functional monomer graft modified propylene polymer is 5-60 wt%, the content of the ethylene copolymer is 15-75 wt%, and the content of the conductive filler is 15-45 wt%; by taking the weight of the functional monomer graft-modified propylene polymer as a reference, the content of a grafted functional monomer structural unit in the functional monomer graft-modified propylene polymer is 5-30wt%. The semi-conductive shielding material disclosed by the invention has good mechanical property and excellent conductivity, is peelable, and can be matched with a polypropylene-based insulating material for use.