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Polypropylene resin prefoamed particles

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08J-009/22    C08J-009/24   
미국특허분류(USC) 521/58 ; 521/56 ; 521/60
출원번호 US-0082560 (1987-08-07)
우선권정보 JP-0050048 (1983-03-25); JP-0068999 (1983-04-19)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 27  인용 특허 : 7
초록
▼

Prefoamed particles consisting essentially of an ethylene/propylene random copolymer, wherein said prefoamed particles are obtained by foaming particles of an ethylene/propylene random copolymer containing 1 to 4% by weight of random-copolymerized ethylene at a temperature in the range of from Tm - 15°C. to Tm - 5°C. (in which Tm is a temperature at which to terminate melting of the copolymer) and within the range of 141°to 151°C., and wherein said prefoamed particles have a crystal structure characterized in that in a DSC curve obtained by heating 1 to ...

대표
청구항
▼

Prefoamed particles consisting essentially of an ethylene/propylene random copolymer, wherein said prefoamed particles are obtained by foaming particles of an ethylene/propylene random copolymer containing 1 to 4% by weight of random-copolymerized ethylene at a temperature in the range of from Tm - 15°C. to Tm - 5°C. (in which Tm is a temperature at which to terminate melting of the copolymer) and within the range of 141°to 151°C., and wherein said prefoamed particles have a crystal structure characterized in that in a DSC curve obtained by heating 1 to ...

이 특허에 인용된 특허 (7)

  1. Hirosawa, Kuninori; Shimada, Sumio. Pre-foamed particles of polypropylene resin and process for production thereof. USP1983044379859.
  2. Kuwabara Hideki (Hadano JPX) Sudo Yoshimi (Chigasaki JPX). Preliminarily foamed particles of non-crosslinked polypropylene-type resin. USP1986054587270.
  3. Kuwabara Hideki (Hadano JPX) Sudo Yoshimi (Chigasaki JPX). Preliminarily foamed particles of non-crosslinked polypropylene-type resin. USP1986014567208.
  4. Akiyama Hiroyuki (Hiratsuka JPX) Hirosawa Kuninori (Isehara JPX) Kuwabara Hideki (Hatano JPX). Process for producing foamed and molded article of polypropylene resin. USP1984044440703.
  5. Akiyama Hiroyuki (Hiratsuka JPX) Izawa Susumu (Utsunomiya JPX) Hirosawa Kuninori (Isehara JPX) Inada Hideharu (Hiratsuka JPX). Process for producing foamed polyolefin articles from aged pre-foamed particles of polyolefin resins. USP1983084399087.
  6. Akiyama Hiroyuki (Hiratsuka JPX) Shimada Sumio (Kanuma JPX) Hirosawa Kuninori (Isehara JPX) Kuwabara Hideki (Hatano JPX). Process for producing pre-foamed particles of polyolefin resin. USP1984034436840.
  7. Ushirokawa Masahiro (Settsu JPX) Iwahama Takeshi (Yao JPX) Senda Kenichi (Akashi JPX). Water-impermeable polyolefin foam and process for preparing the same. USP1983114415680.

이 특허를 인용한 특허 피인용횟수: 27

  1. Roberts, Jr., Richard W.. Bathtub/shower tray support. USP2016039271610.
  2. Roberts, Richard W.. Bathtub/shower tray support. USP20181110130220.
  3. Hira,Akinobu; Hashimoto,Keiichi; Sasaki,Hidehiro. Composite foamed polypropylene resin molding and method of producing same. USP2007027182896.
  4. Wada,Toru. Expandable polypropylene resin particle and molded object obtained therefrom by in-mold molding. USP2007117300960.
  5. Maruhashi, Shotaro; Wakishige, Katsuhiko; Ueda, Yuichi; Oohara, Hidekazu. Expandable styrene resin beads and foams produced therefrom. USP2004086770682.
  6. Oikawa Masaharu,JPX ; Tsurugai Kazuo,JPX ; Tokoro Hisao,JPX. Expanded particles of polyolefin resin and process for preparing the same. USP2000106133331.
  7. Sasaki, Hidehiro; Hira, Akinobu; Hashimoto, Keiichi; Tokoro, Hisao. Expanded polypropylene resin bead and process of producing same. USP2005106956067.
  8. Sasaki Hidehiro,JPX ; Sakaguchi Masakazu,JPX ; Akiyama Mitsuhiro,JPX ; Tokoro Hisao,JPX. Expanded polypropylene resin beads and a molded article. USP2001116313184.
  9. Sasaki Hidehiro,JPX ; Sakaguchi Masakazu,JPX ; Akiyama Mitsuhiro,JPX ; Tokoro Hisao,JPX. Foamed and expanded beads of polypropylene resin for molding. USP2000066077875.
  10. Roberts, Richard W.. In-situ foam core dielectrically-resistant systems and method of manufacture. USP2014048708177.
  11. Roberts, Richard W.. In-situ foam core structural articles and methods of manufacture of profiles. USP2015089102086.
  12. Roberts, Richard W.. In-situ foam core structural articles and system for forming. USP2017069688046.
  13. Roberts, Jr., Richard W.. In-situ foam core structural energy management system and method of manufacture. USP2014098840819.
  14. Roberts, Richard W.. In-situ foam core vehicle seating system and method of manufacture. USP2015079073462.
  15. Shioya Satoru,JPX ; Hira Akinobu,JPX ; Sasaki Hidehiro,JPX ; Tokoro Hisao,JPX. Molded article of foamed and expanded beads of propylene resin. USP2000036034144.
  16. Tokoro, Hisao; Yamazaki, Hiroshi; Shioya, Satoru; Shinohara, Mitsuru; Hira, Akinobu. Molded body of thermoplastic resin having sound absorption characteristics. USP2004116818161.
  17. Roberts, Jr., Richard W.. Packaging component, method of use, and method of manufacture. USP2013128596027.
  18. Takema Yamaguchi JP; Minori Yamaguchi JP; Kenichi Senda JP. Polypropylene resin pre-expanded particles. USP2002036355696.
  19. Yamaguchi, Takema; Iwamoto, Tomonori; Yamaguchi, Minori; Senda, Kenichi. Pre-expanded polypropylene resin beads and process for producing molded object therefrom by in-mold foaming. USP2003086607682.
  20. Sasaki, Hidehiro; Hira, Akinobu; Hashimoto, Keiichi; Tokoro, Hisao; Shinohara, Mitsuru; Tokiwa, Tomoo. Process of producing foamed molding from expanded polypropylene resin beads. USP2009057531116.
  21. Sasaki, Hidehiro; Hira, Akinobu; Hashimoto, Keiichi; Tokoro, Hisao. Process of producing foamed molding from expanded polypropylene resin beads and process of producing expanded polypropylene resin beads. USP2009077560498.
  22. Kamiyama, Makoto; Ishikawa, Hideo. Production apparatus of expansion-molded article, auxiliary member for transfer of foamed particles and production method of expansion-molded article. USP2003046547996.
  23. Roberts, Jr., Richard W.. Recyclable plastic structural articles and method of manufacture. USP2013018342420.
  24. Roberts, Jr., Richard W.. Recyclable plastic structural articles and method of manufacture. USP2016059346237.
  25. Roberts, Richard W.. Recyclable plastic structural articles and method of manufacture. USP20190210207606.
  26. Kazuo Tsurugai JP; Hisao Tokoro JP. Shock absorbing material. USP2002096451419.
  27. Roberts, Jr., Richard W.. Structural plastic articles, method of use, and methods of manufacture. USP2016039272484.

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