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公开(公告)号：EP0791626A4
公开(公告)日：1998-11-25
申请号：EP96929578
申请日：1996-09-10
Applicant: MITSUI PETROCHEMICAL IND
Inventor： KAGAMI MAMORU , TANAKA YASUO , SUGI MASAHIRO
CPC classification number: C08J5/18 , C08J2323/04 , C08L23/04 , C08L23/0815 , C08L2205/02 , C08L2205/025 , C08L2314/06 , C08L2666/04 , C08L2666/06
Abstract: A flexible resin composition of the invention comprises a polyethylene resin (A) and an ethylene-α-olefin random copolymer (B) comprising ethylene and a C3-C20 α-olefin at a specific ratio, and is characterized in that the MFR and density of the polyethylene resin (A) and the density, intrinsic viscosity, glass transition temperature, crystallinity, molecular weight distribution, B value, and gθ * value of the copolymer (B) lie respectively within specific ranges. This composition is excellent in melt flow characteristics, i.e., moldability, and can give a molded article excellent in the balance between flexibility and heat resistance. An ethylene-α-olefin copolymer resin composition of the invention comprises (A-α) a linear ethylene-α-olefin copolymer comprising ethylene and a C4-C20 α-olefin and (B-α) a long-chain branched ethylene-α-olefin random copolymer comprising ethylene and a C3-C20 α-olefin at a specific ratio, and the density and MFR of the copolymer (A-α) and the density, MFR, intrinsic viscosity, glass transition temperature, crystallinity, molecular weight distribution, B value, and gθ * value of the copolymer (B-α) lie respectively within specific ranges. A film of the invention is made from this resin composition. This ethylene-α-olefin copolymer resin composition is excellent in heat stability and high-speed moldability, and can give a film excellent in mechanical strength properties, low-temperature heat sealability, stability of seal, slip characteristics, antiblocking properties, handleability, and adaptability to high-speed filling in automatic filling and packaging. The obtained film also exhibits these effects.
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公开(公告)号：EP0791627A4
公开(公告)日：1998-11-25
申请号：EP96930377
申请日：1996-09-12
Applicant: MITSUI PETROCHEMICAL IND
Inventor： TANAKA YASUO , KAGAMI MAMORU , SUGI MASAHIRO
CPC classification number: C08J5/18 , C08J2323/08 , C08L23/04 , C08L23/0815 , C08L2205/02 , C08L2314/06 , C08L2666/04
Abstract: A composition comprising 100 parts by weight of a polyethylene resin (A) and 2 to 5000 parts by weight of a linear ethylene-α-olefin random copolymer (B) comprising ethylene and a C6-C20 α-olefin, wherein the polyethylene resin (A) has: (a) an MFR (ASTM D 1238, 190 °C, load of 2.16 kg) of 0.1 to 200 g/10 min and (b) a density of 0.901 to 0.970 g/cm3 and the copolymer (B) has: (a) a density of 0.870 to 0.900 g/cm3, (b) an intrinsic viscosity [θ] of 0.3 to 3.0 dl/g as determined at 135 °C in decalin, (c) a glass transition temperature (Tg) of -50°C or below, (d) a crystallinity of less than 40 % as determined by X-ray diffractometry, (e) a molecular weight distribution (Mw/Mn) of 3.0 or below as determined by GPC, (f) a B value of 1.0 to 1.4 as determined by 13C-NMR spectroscopy according to a specific equation and (g) a g θ* value exceeding 0.95, the g θ* value being a [θ]/[θ]¿blank? ratio wherein [θ] is the above intrinsic viscosity (b) and [θ]blank is the intrinsic viscosity of a linear ethylene-propylene copolymer having the same weight-average molecular weight as that of the copolymer (B) (as determined by the light scattering method) and an ethylene content of 70 mole %. This resin composition can give a molded article excellent in flexibility and tensile characteristics.
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公开(公告)号：CA2146362C
公开(公告)日：2002-11-19
申请号：CA2146362
申请日：1994-08-04
Applicant: MITSUI PETROCHEMICAL IND
Inventor： KAGAMI MAMORU , TANAKA MUTSUHIRO , SUGI MASAHIRO
Abstract: The polyamide resin composition of the present invention comprises 100 parts by weight of a polyamide resin and 5 to 200 parts by weight of a graft-modified ethylene/1-butene random copolymer having a graft quantity of an unsaturated carboxylic acid or its derivative of 0.01 to 10 % by weight. The graft-modified ethylene/1-butene random copolymer is a graft-modified product of an ethylene/1-butene random copolymer having a 1-butene content of 15 to 25 % by mol, an intrinsic viscosity [.eta.] of 0.5 to 3.5 dl/g, a glass transition temperature (Tg) of not higher than -60 .degree.C, a crystallinity of less than 10 %, and a parameter (B value) indicating randomness of a copolymerized monomer chain distribution, as measured by a 13C-NMR method, of 1.0 to 1.4. The polyamide resin composition shows high melt flowability, namely, good moldability, and it can provide a molded article excellent in flexibility, low-temperature impact resistance, resistance to water absorption and resistance to saline solutions.
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公开(公告)号：CA2170837A1
公开(公告)日：1996-09-03
申请号：CA2170837
申请日：1996-03-01
Applicant: MITSUI PETROCHEMICAL IND
Inventor： TANAKA YASUO , SUGI MASAHIRO , KAGAMI MAMORU
Abstract: The polypropylene composite film of the present invention comprises (A) a crystalline polypropylene layer and (B) a propylene-1-butene random copolymer layer which is laminated on at least one surface of the crystalline polypropylene layer (A). The propylene/1-butene random copolymer (B) has the following properties: (1) the copolymer comprises 50 to 95 % by mol of constituent units derived from propylene and 50 to 5 % by mol of constituent units derived from 1-butene, (2) the intrinsic viscosity is 0.1 to 5 dl/g, (3) the molecular weight distribution (Mw/Mn) is not less than 3, and (4) the parameter B value is 1.0 to 1.5. The crystalline polypropylene layer (A) of this composite film may be unstretched, monoaxially stretched or biaxially oriented. The polypropylene composite film has excellent heat-sealing properties, such as low-temperature heat-sealing properties and heat-sealing strength, and hot tack properties. The polypropylene composite film is almost free from surface tackiness and shows good slip properties and high blocking resistance at high temperatures, so that it is suitable for high-speed packaging. In addition, this composite film also has good transparency and scratch resistance. The polypropylene composite film of the invention having the above-mentioned excellent properties can be favorably used for packaging of foods, fill packaging and fiber packaging.
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公开(公告)号：CA2170837C
公开(公告)日：2001-08-14
申请号：CA2170837
申请日：1996-03-01
Applicant: MITSUI PETROCHEMICAL IND
Inventor： TANAKA YASUO , SUGI MASAHIRO , KAGAMI MAMORU
Abstract: The polypropylene composite film of the present invention comprises (A) a crystalline polypropylene layer and (B) a propylene-1-butene random copolymer layer which is laminated on at least one surface of the crystalline polypropylene layer (A). The propylene/1-butene random copolymer (B) has the following properties: (1) the copolymer comprises 50 to 95 % by mol of constituent units derived from propylene and 50 to 5 % by mol of constituent units derived from 1-butene, (2) the intrinsic viscosity is 0.1 to 5 dl/g, (3) the molecular weight distribution (Mw/Mn) is not less than 3, and (4) the parameter B value is 1.0 to 1.5. The crystalline polypropylene layer (A) of this composite film may be unstretched, monoaxially stretched or biaxially oriented. The polypropylene composite film has excellent heat-sealing properties, such as low-temperature heat-sealing properties and heat-sealing strength, and hot tack properties. The polypropylene composite film is almost free from surface tackiness and shows good slip properties and high blocking resistance at high temperatures, so that it is suitable for high-speed packaging. In addition, this composite film also has good transparency and scratch resistance. The polypropylene composite film of the invention having the above-mentioned excellent properties can be favorably used for packaging of foods, fill packaging and fiber packaging.
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Patent Agency Ranking
公开(公告)号：CA2205172A1
公开(公告)日：1997-03-20
申请号：CA2205172
申请日：1996-09-12
Applicant: MITSUI PETROCHEMICAL IND
Inventor： KAGAMI MAMORU , TANAKA YASUO , SUGI MASAHIRO
Abstract: A composition comprising 100 parts by weight of a polyethylene resin (A) and 2 to 5000 parts by weight of a linear ethylene-.alpha.-olefin random copolymer (B) comprising ethylene and a C6-C20 .alpha.-olefin, wherein the polyethylene resin (A) has: (a) an MFR (ASTM D 1238, 190 ~C, load of 2.16 kg) of 0.1 to 200 g/10 min and (b) a density of 0.901 to 0.970 g/cm3 and the copolymer (B) has: (a) a density of 0.870 to 0.900 g/cm3, (b) an intrinsic viscosity ¢! of 0.3 to 3.0 dl/g as determined at 135 ~C in decalin, (c) a glass transition temperature (Tg) of -50~C or below, (d) a crystallinity of less than 40 % as determined by X-ray diffractometry, (e) a molecular weight distribution (Mw/Mn) of 3.0 or below as determined by GPC, (f) a B value of 1.0 to 1.4 as determined by 13C-NMR spectroscopy according to a specific equation and (g) a g * value exceeding 0.95, the g * value being a ¢!/¢!blank ratio wherein ¢! is the above intrinsic viscosity (b) and ¢!blank is the intrinsic viscosity of a linear ethylene-propylene copolymer having the same weight-average molecular weight as that of the copolymer (B) (as determined by the light scattering method) and an ethylene content of 70 mole %. This resin composition can give a molded article excellent in flexibility and tensile characteristics.
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公开(公告)号：CA2146362A1
公开(公告)日：1995-02-16
申请号：CA2146362
申请日：1994-08-04
Applicant: MITSUI PETROCHEMICAL IND
Inventor： TANAKA MUTSUHIRO , SUGI MASAHIRO , KAGAMI MAMORU
Abstract: The polyamide resin composition of the present invention comprises 100 parts by weight of a polyamide resin and 5 to 200 parts by weight of a graft-modified ethylene/1-butene random copolymer having a graft quantity of an unsaturated carboxylic acid or its derivative of 0.01 to 10 % by weight. The graft-modified ethylene/1-butene random copolymer is a graft-modified product of an ethylene/1-butene random copolymer having a 1-butene content of 15 to 25 % by mol, an intrinsic viscosity ¢.pi.! of 0.5 to 3.5 dl/g, a glass transition temperature (Tg) of not higher than -60 .degree.C, a crystallinity of less than 10 %, and a parameter (B value) indicating randomness of a copolymerized monomer chain distribution, as measured by a 13C-NMR method, of 1.0 to 1.4. The polyamide resin composition shows high melt flowability, namely, good moldability, and it can provide a molded article excellent in flexibility, low-temperature impact resistance, resistance to water absorption and resistance to saline solutions.
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公开(公告)号：CA2204989A1
公开(公告)日：1997-03-20
申请号：CA2204989
申请日：1996-09-10
Applicant: MITSUI PETROCHEMICAL IND
Inventor： TANAKA YASUO , KAGAMI MAMORU , SUGI MASAHIRO
Abstract: A flexible resin composition of the invention comprises a polyethylene resin (A) and an ethylene-.alpha.-olefin random copolymer (B) comprising ethylene and a C3-C20 .alpha.-olefin at a specific ratio, and is characterized in that the MFR and density of the polyethylene resin (A) and the density, intrinsic viscosity, glass transition temperature, crystallinity, molecular weight distribution, B value, and g * value of the copolymer (B) lie respectively within specific ranges. This composition is excellent in melt flow characteristics, i.e., moldability, and can give a molded article excellent in the balance between flexibility and heat resistance. An ethylene-.alpha.-olefin copolymer resin composition of the invention comprises (A-.alpha.) a linear ethylene-.alpha.-olefin copolymer comprising ethylene and a C4-C20 .alpha.-olefin and (B-.alpha.) a long-chain branched ethylene-.alpha.-olefin random copolymer comprising ethylene and a C3-C20 .alpha.-olefin at a specific ratio, and the density and MFR of the copolymer (A-.alpha.) and the density, MFR, intrinsic viscosity, glass transition temperature, crystallinity, molecular weight distribution, B value, and g * value of the copolymer (B.alpha.) lie respectively within specific ranges. A film of the invention is made from this resin composition. This ethylene-.alpha.-olefin copolymer resin composition is excellent in heat stability and high-speed moldability, and can give a film excellent in mechanical strength properties, low-temperature heat sealability, stability of seal, slip characteristics, antiblocking properties, handleability, and adaptability to high-speed filling in automatic filling and packaging. The obtained film also exhibits these effects.
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公开(公告)号：CA2164461A1
公开(公告)日：1996-06-07
申请号：CA2164461
申请日：1995-12-05
Applicant: MITSUI PETROCHEMICAL IND
Inventor： TANIZAKI TATSUYA , HASHIMOTO MIKIO , SUGI MASAHIRO , TSUTSUI TOSHIYUKI , TANAKA YASUO , KAGAMI MAMORU
IPC: C08F210/06 , C08L23/10 , C08L23/12 , C08L23/14 , B32B27/32
Abstract: Disclosed is a polypropylene composition comprising (A) polypropylene and (B) a specific propylene-l-butene random copolymer in a specific amount ratio. The propylene-l-butene random copolymer (B) is characterized in that: (1) the copolymer contains 50 to 95 % by mol of constituent units from propylene and 50 to 5 % by mol of constituent units from 1-butene, (2) the intrinsic viscosity, as measured in decahydronaphthalene at 135 DEG C, is in the range of 0.1 to 12 dl/g, (3) the molecular weight distribution (Mw/Mn), as determined measured by GPC, is not more than 3, and (4) the parameter B value indicating randomness of the copolymerized monomer sequence distribution is in the range of 1.0 to 1.5. Also disclosed is a polypropylene composite film comprising (I) a crystalline polypropylene layer and (II) a layer formed from the polypropylene composition, which is laminated on at least one surface of the crystalline polypropylene layer (I). The polypropylene composition is excellent in heat resistance and low-temperature heat-sealing properties as well as in flexibility and impact resistance. The polypropylene composite film is excellent in not only heat-sealing properties, particularly low-temperature heat-sealing properties, but also transparency, scratch resistance and blocking resistance.
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公开(公告)号：JPH09143338A
公开(公告)日：1997-06-03
申请号：JP9835696
申请日：1996-04-19
Applicant: MITSUI PETROCHEMICAL IND
Inventor： TANAKA YASUO , KAGAMI MAMORU
Abstract: PROBLEM TO BE SOLVED: To provide a propylene polymer composition excellent in rigidity, hardness, heat resistance, moldability and also excellent in toughness such as impact resistance and tensile elongation. SOLUTION: This propylene polymer composition comprises 25-94wt.% propylene block copolymer (A) having an MFR of 10-400g/10min, containing 3-20wt.% ordinary-temperature-n-decane-solubles having an intrinisic viscosity [η]of 4-10dl/g and containing 30-50mol% ethylene unit and, having an MFR of the polypropylene component of 20-450g/10min and (I5 ), a pentad isotacticity, of 0.95 or above (as determined by the C-NMR method), 5-45wt.% ethylene/1- hexene random copolymer (B) containing 7-20mol% units of 1-hexene, an intrinsic viscosity [η] of 1.0-5dl/g, a glass transition point (Tg) of -50 deg.C or below, and a density of 0.860-0.900g/cm and 1-30wt.% inorganic filler (C).
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