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公开(公告)号：DE60032400D1
公开(公告)日：2007-02-01
申请号：DE60032400
申请日：2000-02-17
Applicant: BRIDGESTONE CORP
Inventor： TOYOSAWA SHINICHI , NISHIMURO YOUICHI , MACHIDA KUNIO , SHIMIZU TAKASHI , MASHITA NARUHIKO , FUKUDA YASUNORI , ARAI JUN , IMAI YASUSHI , UTSUNOMIYA TADASHI
Abstract: There are disclosed a thermoplastic elastomer composition which comprises (a) a hydrogenated block copolymer obtained by hydrogenating the block copolymer comprising at least one polymer block composed principally of a vinylic aromatic compound and at least one polymer block composed principally of a conjugated diene compound; (b) a non-aromatic base softening agent having a kinematic viscosity at 40 DEG C of at least 100 mm /sec; and (c) propylene homopolymer and/or propylene copolymer comprising propylene as a principal component which is obtained through polymerization by using a metallocene catalyst, which is free from a lubricant, which has been heat treated, or which has a MFR (melt flow rate) in a specific range; a gasket material which comprises the above thermoplastic elastomer composition and is particularly suited for use in hard disc units because of its excellent sealing properties and its capability of preventing gas generation; a method for injection molding the above composition; an external anti-sticking agent for a thermoplastic elastomer or rubber which comprises fine particulates of ultrahigh molecular weight polyethylene having an average particle diameter in a specific range, and which is minimized in hygroscopicity, oil absorptivity and volatility, and has high heat resistance and anti-stickiness; and rubber and/or a thermoplastic elastomer which is incorporated with the above external anti-sticking agent and imparted with anti-stickiness.
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公开(公告)号：DE4243055A1
公开(公告)日：1993-07-01
申请号：DE4243055
申请日：1992-12-18
Applicant: BRIDGESTONE CORP
Inventor： FUKAHORI YOSHIHIDE , MASHITA NARUHIKO , OGINO AKIHIKO , TOYOSAWA SHINICHI , OHBA TAKESHI , IMAI YASUSHI
Abstract: Mixts. (I) comprise (i) high mol. organic material (II) (ii) low mol. organic material (III). Amt. of (II) is less than that of (III). The mixts. have a 3-dimensional coherent network skeletal structure formed by (II). Also claimed are (i) Functional porous material (IV) comprising (II) forming 3-dimensional network coherent skeletal structure with average cell dia. less than 500 microns; (ii) Prepn. of (IV); (iii) Functional composite material (V) comprising (IV) and another material held fast within structure of (IV); and (iv) Prepn. of (V). USE/ADVANTAGE - (IV) may be used for, e.g., prepn. of high performance sepn. membranes for dialysis, ultrafiltration, inverse osmosis, ion exchange, gas sepn., or biosensor, or (when impregnated with aq. soln. or organic liq.) long life contact lenses or ink pads and sound absorbing materials. (IV) contain microscopic uniform cells and have high porosity.
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公开(公告)号：DE69518943T2
公开(公告)日：2001-04-26
申请号：DE69518943
申请日：1995-05-17
Applicant: BRIDGESTONE CORP
Inventor： YAMAZAKI HIROTAKA , TOYOSAWA SHINICHI , IMAI YASUSHI , FUKAHORI YOSHIHIDE
Abstract: A paper feed roll is formed of a rubber composition comprising (A) a composite material having a low molecular weight material retained in a medium material and (B) a rubber material. The low molecular weight material has a viscosity of up to 5x10 centipoise at 100 DEG C. The difference in solubility parameter between the low molecular weight material and the medium material is up to 3.0. The weight ratio of the low molecular weight material to the medium material is at least 1.0. The difference in solubility parameter between the low molecular weight material and the rubber material is up to 4.0. A paper feed apparatus comprising the paper feed roll is also provided.
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公开(公告)号：EP1365180A4
公开(公告)日：2005-03-23
申请号：EP02716411
申请日：2002-01-28
Applicant: BRIDGESTONE CORP
Inventor： IMAI YASUSHI , UTSUNOMIYA TADASHI , OGATA TOMOHIRO , SHIBATA SHOSON , HOSOKAWA TATSUHIKO , MASHITA NARUHIKO , YAMAMOTO TSUNEHIRO
IPC: B29C47/12 , C08L23/00 , C08L53/02 , C09K3/10 , G11B33/14 , F16J15/10 , B29B7/80 , B29C41/20 , C08L23/02 , G11B33/12
CPC classification number: G11B33/1466 , B29C47/0016 , B29C47/0019 , B29C47/003 , B29C47/12 , B29L2031/265 , C08L23/00 , C08L53/025 , C09K3/1009 , C08L2666/06
Abstract: A gasket integrated with a cover wherein a gasket material composed of a thermoplastic elastomer composition is integrally fixed to the cover having a shape of multistep contraction over at least two contraction steps, a gasket wherein the cover and the gasket are integrally molded and after molding, are subjected to a heating treatment at a temperature not lower than the temperature at which an adhesive component in materials constituting the gasket initiates crystal fusion or glass transition, or a gasket wherein the cover and the gasket are integrally molded and a covering layer composed of a fluoropolymer is formed on the gasket surface on atmospheric side are proposed. According to the present invention, a gasket integrated with a cover for a hard disc device which gasket is excellent in adhesive property and productivity, and is minimized in permeability and penetration of substances is provided.
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公开(公告)号：DE60032400T2
公开(公告)日：2007-04-19
申请号：DE60032400
申请日：2000-02-17
Applicant: BRIDGESTONE CORP
Inventor： TOYOSAWA SHINICHI , NISHIMURO YOUICHI , MACHIDA KUNIO , SHIMIZU TAKASHI , MASHITA NARUHIKO , FUKUDA YASUNORI , ARAI JUN , IMAI YASUSHI , UTSUNOMIYA TADASHI
Abstract: There are disclosed a thermoplastic elastomer composition which comprises (a) a hydrogenated block copolymer obtained by hydrogenating the block copolymer comprising at least one polymer block composed principally of a vinylic aromatic compound and at least one polymer block composed principally of a conjugated diene compound; (b) a non-aromatic base softening agent having a kinematic viscosity at 40 DEG C of at least 100 mm /sec; and (c) propylene homopolymer and/or propylene copolymer comprising propylene as a principal component which is obtained through polymerization by using a metallocene catalyst, which is free from a lubricant, which has been heat treated, or which has a MFR (melt flow rate) in a specific range; a gasket material which comprises the above thermoplastic elastomer composition and is particularly suited for use in hard disc units because of its excellent sealing properties and its capability of preventing gas generation; a method for injection molding the above composition; an external anti-sticking agent for a thermoplastic elastomer or rubber which comprises fine particulates of ultrahigh molecular weight polyethylene having an average particle diameter in a specific range, and which is minimized in hygroscopicity, oil absorptivity and volatility, and has high heat resistance and anti-stickiness; and rubber and/or a thermoplastic elastomer which is incorporated with the above external anti-sticking agent and imparted with anti-stickiness.
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Patent Agency Ranking
公开(公告)号：DE69518943D1
公开(公告)日：2000-11-02
申请号：DE69518943
申请日：1995-05-17
Applicant: BRIDGESTONE CORP
Inventor： YAMAZAKI HIROTAKA , TOYOSAWA SHINICHI , IMAI YASUSHI , FUKAHORI YOSHIHIDE
Abstract: A paper feed roll is formed of a rubber composition comprising (A) a composite material having a low molecular weight material retained in a medium material and (B) a rubber material. The low molecular weight material has a viscosity of up to 5x10 centipoise at 100 DEG C. The difference in solubility parameter between the low molecular weight material and the medium material is up to 3.0. The weight ratio of the low molecular weight material to the medium material is at least 1.0. The difference in solubility parameter between the low molecular weight material and the rubber material is up to 4.0. A paper feed apparatus comprising the paper feed roll is also provided.
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公开(公告)号：FR2685338A1
公开(公告)日：1993-06-25
申请号：FR9215613
申请日：1992-12-23
Applicant: BRIDGESTONE CORP
Inventor： FUKAHORI YOSHIHIDE , MASHITA NARUHIKO , OGINO AKIHIKO , TOYOSAWA SHINICHI , OHBA TAKESHI , IMAI YASUSHI
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公开(公告)号：JP2009101640A
公开(公告)日：2009-05-14
申请号：JP2007276743
申请日：2007-10-24
Applicant: Bridgestone Corp , 株式会社ブリヂストン
Inventor： TAKAHASHI RYOICHI , IMAI YASUSHI
Abstract: PROBLEM TO BE SOLVED: To provide a mold for injection molding which causes neither crack nor whitening at an undercut part even when the resin to be used thermally shrinks.
SOLUTION: The mold for injection molding has an insert for forming the undercut part and a core for forming a hollow part. The insert has a movable part and a supporting part and is provided with an energizing means for energizing the movable part in a direction of returning it to an initial position with respect to the supporting part.
COPYRIGHT: (C)2009,JPO&INPITAbstract translation: 要解决的问题：即使当要使用的树脂热收缩时，提供一种注射成型模具，其也不会在底切部分处产生裂纹和增白。 解决方案：注塑用模具具有用于形成底切部的插入件和用于形成中空部的芯。 插入件具有可移动部件和支撑部件，并且设置有用于在可移动部件将其返回到相对于支撑部件的初始位置的方向上激励的激励装置。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2002194135A
公开(公告)日：2002-07-10
申请号：JP2001362868
申请日：2001-11-28
Applicant: BRIDGESTONE CORP
Inventor： FUKAHORI YOSHIHIDE , TOYOSAWA SHINICHI , IMAI YASUSHI , OBA TAKESHI , MASHITA SHIGEHIKO , OGINO AKIHIKO
IPC: C08J9/26
Abstract: PROBLEM TO BE SOLVED: To provide a functional porous material useful in a wide industrial field, having a micro and uniform pore and high porosity as a high functional porous article or a functional separation membrane. SOLUTION: The functional porous material 1 is composed of a high molecular material having a three-dimensional continuous network backbone structure whose network opening has an average diameter of 500 μm or below. The functional porous material is manufactured by mixing the high molecular organic material with a larger amount of a monomeric organic material than the high molecular organic material to obtain a precursor in which the high molecular organic material forms the three-dimensional continuous network backbone structure, and then removing the low molecular organic material in the precursor. The functional porous material having a micro and uniform pore and high porosity can be obtained by removing the low molecular organic material from the mixture system composed by forming the three-dimensional continuous network backbone structure with a small amount component of the high molecular organic material, and dispersing a large amount component of the low molecular organic material into the backbone structure.
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公开(公告)号：JP2000272653A
公开(公告)日：2000-10-03
申请号：JP7962799
申请日：1999-03-24
Applicant: BRIDGESTONE CORP
Inventor： MASHITA NARUHIKO , SAITO HIROTAKE , WAKANA YUICHIRO , IMAI YASUSHI , UTSUNOMIYA TADASHI
Abstract: PROBLEM TO BE SOLVED: To provide a seal member which does not generate a tear even when a needle or the like is pierced, and is excellent in an antileaking property after the needle or the like is pierced and pulled out. SOLUTION: This seal member comprises a thermoplastic elastomer composition of which the JIS-A hardness is 60 degree or lower, and a composite film material of which the major component is a resin having a softening temperature at 300 deg.C or lower, and at least one section of the composite film material is covered with the thermoplastic elastomer composition.
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