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    • 1. 发明专利
    • Article for molding prosthesis and manufacturing method of prosthetic appliance
    • 用于模具制造的制品和制造方法
    • JP2007014512A
    • 2007-01-25
    • JP2005198190
    • 2005-07-07
    • Mitsui Chemicals Inc三井化学株式会社
    • NISHIJIMA SHIGETOSHI
    • A61L27/00C08K3/00C08L23/00
    • PROBLEM TO BE SOLVED: To provide an article for molding a prosthesis having a superior physical property balance suited to the prosthesis and a superior workability and to provide a prosthetic appliance using the same and its manufacturing method. SOLUTION: This article for the prosthesis and this prosthetic appliance are formed by molding a resin composition including 5-40 pts.wt. of inorganic compound with refractive index (n D ) of 1.43-1.5 relative to 100 pts.wt. of ultr-high molecular weight polyolefin with a limiting viscosity [η] of 5 dl/g or more. This manufacturing method of the prosthetic appliance is characterized in heating the article for molding the prosthesis formed by molding a resin composition with a heating device till it becomes transparent and molding it into the shape of the prosthetic appliance. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种用于模制具有适合于假体的优异物理平衡的假体和优良的可加工性的制品,并提供使用该假体的假体装置及其制造方法。 解决方案:该假体和该假体器具的制品通过模制包含5-40重量份的树脂组合物而形成。 的折射率(n D )的无机化合物相对于100重量份为1.43-1.5。 的特高粘度[η]为5dl / g以上的超高分子量聚烯烃。 这种假体器具的制造方法的特征在于,加热用于模制通过用加热装置模制树脂组合物形成的假体的制品,直到其变得透明并将其模塑成假体器具的形状。 版权所有(C)2007,JPO&INPIT
    • 4. 发明专利
    • Ultra-high-molecular-weight polyethylene particulate excellent in heat resistance and method for producing the same
    • 超高分子量聚异丁烯的耐热性优良的方法及其制造方法
    • JP2007023171A
    • 2007-02-01
    • JP2005208070
    • 2005-07-19
    • Mitsui Chemicals Inc三井化学株式会社
    • NISHIJIMA SHIGETOSHIMATSUMOTO TETSUHIRO
    • C08F255/02C08F2/44C08L23/06C08L23/12C08L23/18
    • PROBLEM TO BE SOLVED: To provide an ultra-high-molecular-weight polyethylene particulate excellent in wear resistance, impact resistance, self-lubricating property and heat resistance.
      SOLUTION: The ultra-high-molecular-weight polyethylene particulate has a polyethylene content of 50-99 mass%, and at least its surface is made of an ultra-high-molecular-weight polyethylene with a limiting viscosity [η] of ≥5 dl/g. The interior of the particulate comprises an α-olefin polymer chosen from the group consisting of propylene, 3-methyl-1-butene and 4-methyl-1-pentene. In a method for producing the ultra-high-molecular-weight polyethylene particulate, using a catalyst comprising a transition metal catalyst component and an organic metal component, ethylene is first polymerized until it accounts for ≥50 mass% of the total amount of a polymerized product, and the α-olefin polymer chosen from the group consisting of propylene, 3-methyl-1-butene and 4-methyl-1-pentene is subsequently polymerized so that it accounts for the remaining amount of the polymerized product.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供耐磨性,耐冲击性,自润滑性和耐热性优异的超高分子量聚乙烯颗粒。 解决方案:超高分子量聚乙烯颗粒的聚乙烯含量为50-99质量%,至少其表面由极限粘度[η]的超高分子量聚乙烯制成, ≥5dl / g。 颗粒的内部包含选自丙烯,3-甲基-1-丁烯和4-甲基-1-戊烯的α-烯烃聚合物。 在使用含有过渡金属催化剂成分和有机金属成分的催化剂的超高分子量聚乙烯粒子的制造方法中,首先使乙烯聚合直至聚合的聚合物的总量的≥50质量% 产物,并且选自丙烯,3-甲基-1-丁烯和4-甲基-1-戊烯的α-烯烃聚合物随后聚合,从而占聚合产物的剩余量。 版权所有(C)2007,JPO&INPIT
    • 5. 发明专利
    • Light diffusion plate
    • 光扩散板
    • JP2005010813A
    • 2005-01-13
    • JP2004281590
    • 2004-09-28
    • Mitsui Chemicals Inc三井化学株式会社
    • YAMAMOTO YOZONISHIJIMA SHIGETOSHI
    • G02B5/02C08K3/00C08L23/08C08L45/00C08L65/00
    • PROBLEM TO BE SOLVED: To provide a light diffusion plate capable of regulating light transmittance over a wide range, excellent in heat resistance, dimensional stability and chemical resistance, free of a change of optical properties due to water absorption, and ensuring no chromatic aberration.
      SOLUTION: The light diffusion plate comprises [A] a cycloolefin resin selected from the group comprising the following [I-1], [I-2], [I-3] and [1-4] and [B] an organic or inorganic filler: [I-1] an ethylene-cycloolefin random copolymer obtained by copolymerizing ethylene and a cycloolefin represented by formula [I] or [II] (not shown), [I-2] a ring-opened polymer or copolymer of a cycloolefin represented by the above formula [I] or [II], [I-3] a hydrogenated product of the above ring-opened polymer or copolymer, [1-4] a graft modified product of the above [I-1], [I-2] or [I-3]. The light diffusion plate capable of regulating transmittance over a wide range, excellent in heat resistance, dimensional stability and chemical resistance, free of a change of properties due to moisture absorption, and ensuring no chromatic aberration is provided.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供能够在宽范围内调节透光率的光扩散板,耐热性,尺寸稳定性和耐化学性优异,不会由于吸水而导致光学性能的变化,并且确保没有 色差 光散射板包含[A]选自包含以下[I-1],[I-2],[I-3]和[1-4]和[B]的环烯烃树脂, 有机或无机填料:[I-1]通过乙烯与由式[I]或[II](未示出)表示的环烯烃共聚获得的乙烯 - 环烯烃无规共聚物,[I-2]开环聚合物或 由上述式[I]或[II]表示的环烯烃的共聚物,[I-3]上述开环聚合物或共聚物的氢化产物,[1-4]上述[I- 1],[I-2]或[I-3]。 能够调节宽范围的透光率,耐热性,尺寸稳定性和耐化学性优异的光扩散板,不会由于吸湿而不产生特性变化,并且不会发生色差。 版权所有(C)2005,JPO&NCIPI
    • 7. 发明专利
    • DE69910950T2
    • 2004-07-15
    • DE69910950
    • 1999-11-05
    • MITSUI CHEMICALS INC
    • NISHIJIMA SHIGETOSHIYAMAMOTO YOHZOH
    • C08L23/04C08K5/15C08K5/1575C08L23/08C08L45/00C08L51/00
    • A resin composition is a transparent, low-water-absorption polyolefin-based resin composition containing a sorbitol-based derivative of a particular structure, whose polyolefin-based resin having crystallinity of 0% to 20% shows haze of not more than 10%, total light transmittance of not less than 80%, when measured in accordance with ASTM D1003 using an article 3 mm thick molded therefrom as the test specimen, and shows water absorption of not more than 0.1% after 100-hour immersion in water at 23 DEG C, or whose polyolefin-based resin comprises a cyclic olefin-based polymer comprising a cyclic olefin of a particular structure. Preferable examples of the polyolefin-based resin include the aforesaid cyclic olefin-based polymer and a polycyclohexane-based resin. This resin composition is used for transparent resin moldings that are useful as optical products and moldings for medical and pharmaceutical use because it has excellent transparency, heat resistance, rigidity and water vapor resistance and the decline in its transparency in a high-temperature/high-humidity atmosphere will be little.
    • 8. 发明专利
    • DE69910950D1
    • 2003-10-09
    • DE69910950
    • 1999-11-05
    • MITSUI CHEMICALS INC
    • NISHIJIMA SHIGETOSHIYAMAMOTO YOHZOH
    • C08L23/04C08K5/15C08K5/1575C08L23/08C08L45/00C08L51/00
    • A resin composition is a transparent, low-water-absorption polyolefin-based resin composition containing a sorbitol-based derivative of a particular structure, whose polyolefin-based resin having crystallinity of 0% to 20% shows haze of not more than 10%, total light transmittance of not less than 80%, when measured in accordance with ASTM D1003 using an article 3 mm thick molded therefrom as the test specimen, and shows water absorption of not more than 0.1% after 100-hour immersion in water at 23 DEG C, or whose polyolefin-based resin comprises a cyclic olefin-based polymer comprising a cyclic olefin of a particular structure. Preferable examples of the polyolefin-based resin include the aforesaid cyclic olefin-based polymer and a polycyclohexane-based resin. This resin composition is used for transparent resin moldings that are useful as optical products and moldings for medical and pharmaceutical use because it has excellent transparency, heat resistance, rigidity and water vapor resistance and the decline in its transparency in a high-temperature/high-humidity atmosphere will be little.