摘要:
A long-fiber-reinforced resin composition including the following component (A) and the component (B), the content of the component (A) being 50 to 90 wt % and the content of the component (B) being 10 to 50 wt %; and the content of reinforcing fiber contained in the component (A) being 20 to 60 wt % relative to the total amount of the fiber-reinforced resin composition:[Component (A)] a long-fiber-reinforced thermoplastic resin pellet including a thermoplastic resin, a modified polyolefin-based resin modified with an unsaturated carboxylic acid or its derivative and reinforcing fiber and satisfying the following (A-1) to (A-4): (A-1): the melt index of the thermoplastic resin (resin temperature: 230° C., load: 21.18N) is 100 to 250 g/10 min; (A-2): the relaxation time λ of the thermoplastic resin at an angular frequency ω=1 (rad/sec) calculated from the storage modulus G′ and the loss modulus G″ measured by means of a cone-and-plate rheometer is 0.1 (sec) or less; (A-3) the content of the reinforcing fiber is 40 to 70 wt %; and (A-4) the content of the modified polyolefin-based resin is 1 to 5 wt %; [Component (B)] a polyolefin-based resin satisfying the following (B-1) and (B-2): (B-1) the melt index of the polyolefin-based resin (resin temperature: 230° C., load: 21.18N) is 20 to 70 g/10 min; and (B-2) the relaxation time λ of the polyolefin-based resin at an angular frequency ω=1 (rad/sec) calculated from the storage modulus G′ and the loss modulus G″ measured by means of a cone-and-plate rheometer is 0.23 (sec) or less.
摘要:
Packaging propylene resin compositions are excellent in balance in high transparency, rigidity, low-temperature impact resistance and blocking resistance. Retort films, protective films, medical container packaging films and freshness-keeping films, and sheets for similar purposes are obtained from the compositions. A packaging propylene resin composition includes a propylene polymer (A) satisfying specific requirements and a propylene/ethylene copolymer (B) satisfying specific requirements. In another packaging propylene resin composition, Dinsol and Dsol satisfy specific requirements.
摘要:
The object of the present invention is to provide a multilayered stretched hollow material having excellent transparency and gas barrier properties. The multilayered stretched hollow material of the present invention is characterized in that it includes surface layers and an intermediate layer wherein the surface layers each contain a propylene polymer composition containing a propylene polymer (the weight thereof being A) and a modified propylene polymer grafted with an unsaturated carboxylic acid or a derivative thereof (the weight thereof being B) in a weight ratio of B/(A+B)≧0.15 and wherein the intermediate layer contains a modified ethylene/vinyl compound copolymer that has a melt flow rate (ASTM D 1238, 210° C., 2.16 kg load) of not less than 8 g/10 min and a crystallization temperature (Tc) of not less than 138° C. and further wherein the multilayered stretched hollow material satisfies C/(A+B+C)≧0.05 wherein C is the weight of the ethylene/vinyl compound copolymer.
摘要:
To provide a resin composition comprising a polypropylene resin composition and an aluminum flake pigment for use as an automotive resin composition, which is excellent in mechanical strength, physical properties and flowability, and enables to produce molded products showing good metallic appearance.A composition comprising a crystalline propylene/ethylene block copolymer, an elastomeric polymer and an inorganic filler is a preferred example of the polypropylene resin composition, and aluminum flakes surface-coated with a polymer containing as constituent units acrylic acid, an acrylic acid ester, epoxylated polybutadiene and divinylbenzene are preferred examples of the aluminum flake pigment.
摘要:
The invention provides a propylene random block copolymer (A) that has a melt flow rate from 0.1 to 100 g/10 min and a melting point from 100 to 155° C. and includes 90 to 60% by weight of a portion insoluble (Dinsol) in n-decane at room temperature and 10 to 40% by weight of a portion soluble (Dsol) in n-decane at room temperature, wherein the Dinsol satisfies the following requirements (1) through (3) and the Dsol satisfies the following requirements (4) through (6). The invention further provides molded articles such as sheets, films, injection molded articles, hollow molded articles, injection blow molded articles and fibers, which are formed of the propylene random block copolymer (A) or a propylene resin composition containing the propylene random block copolymer (A). (1) The molecular weight distribution (Mw/Mn) obtained by GPC of the Dinsol is from 1.0 to 3.5, (2) the content of skeletons derived from ethylene in the Dinsol is from 0.5 to 13% by mole, (3) the total amount of 2,1- and 1,3-propylene units in the Dinsol is 0.2% by mole or less, (4) the molecular weight distribution (Mw/Mn) obtained by GPC of the Dsol is from 1.0 to 3.5, (5) the intrinsic viscosity [η] in decalin at 135° C. of the Dsol is from 1.5 to 4 dl/g and (6) the content of skeletons derived from ethylene in the Dsol is from 15 to 35% by mole.
摘要:
The present invention provides a propylene-ethylene copolymer which is excellent in a balance between a heat resistance and an elasticity recovering property and has a good transparency and which is improved in peel whitening brought about by mutual adhesion in storing specific to soft materials, a resin composition for a transparent elasticity recovering film or sheet comprising the above copolymer, a transparent elasticity recovering film or sheet and a wrap film.
摘要:
A propylene polymer composition includes a propylene homopolymer (A) having an intrinsic viscosity [η] measured in a tetralin solvent at 135° C. in the range of 7 to 12 dl/g, a propylene polymer (B) having an intrinsic viscosity [η] in the range of not less than 0.21 dl/g and less than 0.54 dl/g, and having a proportion of a component eluted at a temperature of not more than −20° C. in TREF in the range of not more than 3.5 mass %, and a propylene polymer (C) having an intrinsic viscosity [η] in the range of not less than 0.54 dl/g and less than 2.6 dl/g, wherein the content of (A) is 0.5 to 47.5 mass %, the content of (B) is 5 to 95 mass % and the content of (C) is 2.5 to 85.5 mass %, based on the total of (A), (B) and (C).
摘要:
A polypropylene resin composition including components (A) to (D) in prescribed amounts, limiting the amount of a polypropylene component having a molecular weight of 106.5 or more to less than 0.05 wt % can provide a propylene resin composition that includes an impact polypropylene and a high flow homopolypropylene and is particularly preferable for foam molding, and a molded article comprising the composition (A) Impact polypropylene that includes 5 wt % or more and 20 wt % or less of a propylene-ethylene copolymer having an intrinsic viscosity [η] of 1.5 dl/g or more and 3.8 dl/g or less and having an MFR (230° C., 2.16 kg) of 30 g/10 min to 200 g/10 min, (B) high flow homopolypropylene having MFR (230° C., 2.16 kg) of 200 g/10 min to 1000 g/10 min, (C) ethylene elastomer having an MFR (190° C., 2.16 kg) of 0.5 g/10 min to 40 g/10 min, and (D) inorganic filler.
摘要:
Disclosed are: a polypropylene-based resin composition comprising 100 parts by mass of polypropylene-based resin (A) (provided that, when the polypropylene-based resin includes other resins and/or inorganic filler, the total amount of the polypropylene-based resin and other resins and/or inorganic filler is taken as 100 parts by mass), 0.80 to 5.0 parts by mass of on or more types of aluminum flakes (B) having an average particle size of 5 to 90 μm, and 0.005 to 0.06 parts by mass of carbon black (C); and a molded article obtained by injection-molding this polypropylene-based resin composition. The polypropylene-based resin composition and the molded article obtained from this are excellent in a flip-flop metallic feeling, a heavy luxury feeling, light resistance and a feeling of luminance.
摘要:
An object of the present invention is to provide a highly heat resistant and highly rigid propylene-based polymer having unprecedentedly high stereoregularity. The propylene-based polymer of the present invention satisfies requirements (1) to (4) and preferably requirement (5): (1) an average meso chain length is 800 to 100,000; (2) a MFR is 0.5 to 1,000 g/10 minutes; (3) a ratio of Mw to Mn, Mw/Mn, as measured by GPC is 4.2 to 20; (4) when the ratio of a component which elutes at a temperature of 122° C. or more as measured by temperature rising elution fractionation (TREF) is A % by weight and the melt flow rate of the requirement (2) is B g/10 minutes, 100≥A≥20×EXP(−0.01×B); (5) an amount of a component soluble in n-decane at 23° C. is 0.01 to 2% by weight.