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Patent US5525675 - Thermoplastic elastomer, composition therefor and production process thereof ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsDescribed is a thermoplastic elastomer comprising (A) 10-90 wt. % of polypropylene having substantially a syndiotactic structure, and (B) 90-10 wt. % of an ethylene-propylene-nonconjugated diene copolymer rubber and/or ethylene-propylene copolymer rubber, said (B) having been partially crosslinked. The...http://www.google.com/patents/US5525675?utm_source=gb-gplus-sharePatent US5525675 - Thermoplastic elastomer, composition therefor and production process thereof, as well as molded or otherwise formed product obtained from the thermoplastic elastomerAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS5525675 APublication typeGrantApplication numberUS 08/216,464Publication dateJun 11, 1996Filing dateMar 23, 1994Priority dateMar 31, 1993Fee statusPaidAlso published asDE69425175D1, DE69425175T2, EP0618259A2, EP0618259A3, EP0618259B1Publication number08216464, 216464, US 5525675 A, US 5525675A, US-A-5525675, US5525675 A, US5525675AInventorsKazuhiko Masuda, Sachio Yokote, Masatoshi KumagaiOriginal AssigneeMitsui Toatsu Chemicals, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (8), Referenced by (33), Classifications (21), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetThermoplastic elastomer, composition therefor and production process thereof, as well as molded or otherwise formed product obtained from the thermoplastic elastomer
US 5525675 AAbstract
TABLE 1______________________________________   Unit  Example 1 Example 2 Comp. Ex. 1______________________________________ResincompositionSPP-1     wt. %   35        35      35SPP-2     wt. %EPDM*     wt. %   65        65      65Organic   wt.part 0.2       0.4peroxideCrosslinking aid     wt.part 0.3       0.6PhysicalpropertiesShore "A" degree  70        53      77hardnessTensile strength     kg/cm2             139       91      114at breakYoung's   kg/cm2             227       204     325modulusTear strength     kg/cm   80        58      71Tension set     %       13        11      22Gloss     %       0.7       0.5     10.1Gel fraction     wt. %   85        94      &lt;1______________________________________ *EPDM: Ethylenepropylene-nonconjugated diene copolymer rubber
TABLE 2______________________________________      Unit   Example 3  Comp. Ex. 2______________________________________ResincompositionSPP-1        wt. %    50         50EPDM*        wt. %    50         50Organic peroxide        wt.part  0.2Crosslinking aid        wt.part  0.3PhysicalpropertiesShore "D" hardness        degree   45         51Tensile strength        kg/cm2                 160        132at breakYoung's modulus        kg/cm2                 690        980Tear strength        kg/cm    105        100Tension set  %        30         42Gloss        %        7.6        48.7Gel fraction wt. %    79         &lt;1______________________________________ *EPDM: ethylenepropylene-nonconjugated diene copolymer rubber
TABLE 3______________________________________      Unit   Example 4  Comp. Ex. 3______________________________________ResincompositionSPP-1        wt. %SPP-2        wt. %    50         50EPDM*        wt. %    50         50Organic peroxide        wt.part  0.2Crosslinking aid        wt.part  0.3PhysicalpropertiesShore "D" hardness        degree   40         47Tensile strength        kg/cm2                 113        109at breakYoung's modulus        kg/cm2                 539        700Tear strength        kg/cm    94         81Tension set  %        22         35Gloss        %        6.9        42.5Gel fraction wt. %    80         &lt;1______________________________________ *EPDM: ethylenepropylene-nonconjugated diene copolymer rubber
TABLE 4______________________________________           Unit  Example 5______________________________________ResincompositionSPP-1             wt. %   35SPP-2             wt. %EPM*              wt. %   65Organic peroxide  wt.part 0.2Crosslinking aid  wt.part 0.3PhysicalpropertiesShore "A" hardness             degree  72Tensile strength  kg/cm2                     90at breakYoung's modulus   kg/cm2                     214Tear strength     kg/cm   72Tension set       %       16Gloss             %       0.9Gel fraction      wt. %   73______________________________________ *EPM: Ethylenepropylene copolymer rubber
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2001Sep 12, 2002Ayman HaririUniversal point of contact identifier system and methodUS20030170460 *Jan 9, 2003Sep 11, 2003John SienkiewiczExtruded automotive trim and method of making sameUS20030176590 *Jun 18, 2001Sep 18, 2003Norbert ReicheltUse of modified olefin polymers for producing polyolefin products with improved toughness, strength and heat resistanceUS20040127628 *Sep 30, 2003Jul 1, 2004Walton Kim LouisRheology-modified thermoplastic elastomer compositions for extruded profilesUS20040147677 *Dec 5, 2003Jul 29, 2004Jonas AngusThermoplastic vulcanizatesUS20040234708 *Jun 29, 2004Nov 25, 2004Kaneka CorporationCellular molded article in mold pattern having surface skin and producing method thereofUS20050009942 *Aug 9, 2004Jan 13, 2005Walton Kim LouisThermoplastic elastomer compositions rheology-modified using peroxides and free radical coagentsUS20050107529 *Nov 12, 2004May 19, 2005Sudhin DattaArticles comprising propylene-based elastomersUS20050107530 *Nov 12, 2004May 19, 2005Sudhin DattaTransparent and translucent crosslinked propylene-based elastomers, and their production and useUS20050131142 *Nov 12, 2004Jun 16, 2005Sudhin DattaHigh strength propylene-based elastomers and uses thereofUS20110152810 *Dec 16, 2010Jun 23, 2011Invista North America S.A.R.L.Elastic fiber containing an anti-tack additiveUS20130137826 *Jun 28, 2012May 30, 2013Mitsui Chemicals, Inc.Propylene-based polymer composition and uses thereof* Cited by examinerClassifications U.S. Classification525/194, 525/240, 525/193, 296/901.01, 293/102International ClassificationC08L23/12, C08J3/24, C08K5/14, C08L23/16, C08L23/00, C08L23/10, C08L23/14Cooperative ClassificationC08L2207/04, C08L23/16, C08L23/14, C08L2207/12, C08L2312/00, C08L23/12European ClassificationC08L23/16, C08L23/14, C08L23/12Legal EventsDateCodeEventDescriptionApr 29, 1994ASAssignmentOwner name: MITSUI TOATSU CHEMICALS, INCORPORATED, JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MASUDA, KAZUHIKO;YOKOTE, SACHIO;KUMAGAI, MASATOSHI;REEL/FRAME:006999/0249Effective date: 19940427May 4, 1998ASAssignmentOwner name: MITSUI CHEMICALS, INC., JAPANFree format text: MERGER;ASSIGNOR:MITSUI TOATSU CHEMICALS, INC.;REEL/FRAME:009146/0377Effective date: 19971219Nov 30, 1999FPAYFee paymentYear of fee payment: 4Nov 12, 2003FPAYFee paymentYear of fee payment: 8Nov 19, 2007FPAYFee paymentYear of fee payment: 12RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services