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Low molecular weight alkenyl aromatic polymer foam

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08J-009/08   
미국특허분류(USC) 521/79 ; 521/97 ; 521/146
출원번호 US-0612943 (1996-03-12)
국제출원번호 PCT/US94/10491 (1994-09-16)
§371/§102 date 19960312 (19960312)
국제공개번호 WO-9510560 (1995-04-20)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 6  인용 특허 : 5
초록

Disclosed is a foam structure of desirable mechanical strength made with a low molecular weight alkenyl aromatic polymer material and an inorganic blowing agent. The polymer material has an alkenyl aromatic polymer of a weight average molecular weight of 100,000 to 165,000. The foam structure can be made in processes with reduced pressure drop.

대표
청구항
▼

A process for making an extruded alkenyl aromatic polymer foam structure having a cross-section thickness in minor dimension of greater than 9.5 millimeters and a cross-section of 30 square centimeters or more, comprising: a) heating to form a melt polymer material an alkenyl aromatic polymer material comprising greater than 50 percent by weight alkenyl aromatic monomeric units and further comprising a weight average molecular weight of 125,000 to to 145,000 and a polydispersity index of 2.05 to 3.0; b) incorporating into the melt polymer material at an...

이 특허에 인용된 특허 (5)

  1. Blythe James E. (Williamson NY) Colombo Edward A. (Penfield NY) Krutchen Charles M. (Pittsford NY) Williams Phillip A. (Naples NY) Wu Wen-Pao (Pittsford NY). High melt index polystyrene foam and method. USP1994025286429.
  2. Hahn Klaus (Kirchheim DEX) Wittmer Pal (Landau DEX) De Grave Isidoor (Wachenheim DEX) Schick Ruprt (Limburgerhof DEX) Echte Adolf (Ludwigshafen DEX). Particulate polystyrene containing blowing agent and having improved expandability. USP1985044513105.
  3. Hahn Klaus (Kirchheim DEX) Wittmer Paul (Landau DEX) De Grave Isidoor (Wachenheim DEX) Schick Rupert (Limburgerhof DEX) Echte Adolf (Ludwigshafen DEX). Particulate polystyrene containing blowing agent and having improved expandability. USP1985064525484.
  4. Welsh Gary C. (Midland MI). Polystyrene foam made with only carbon dioxide as a blowing agent and a process for making the same. USP1993105250577.
  5. Komatsuzaki Nobuyuki (Koga JPX) Tsubone Masahiro (Koga JPX) Machida Bon (Koga JPX). Polystyrene foamed sheet suitable for forming. USP1985074528221.

이 특허를 인용한 특허 피인용횟수: 6

  1. Olang, Fatemeh Nassreen. Apparatus and methods for application of foam and foam/loosefill insulation systems. USP2014088793952.
  2. Larry Michael Miller ; Raymond Marshall Breindel ; Mitchell Zane Weekley ; Thomas Earl Cisar ; Kerry Jerome Prince. Extruded foam product with 134a and alcohol blowing agent. USP2002026350789.
  3. Naito,Masato; Kogure,Naochika; Imanari,Daisuke; Nishiyama,Noritoshi. Method for production of extruded, polystyrene-based resin foam plate and extruded foam plate obtained thereby. USP2006037008578.
  4. Lanzani Federico,ITX ; Mauri Renato,ITX. Method for the production of a substantially open-cell polystyrene sheet. USP2001056235360.
  5. Federico Lanzani IT; Renato Mauri IT. Method for the production of substantially open-cell polystyrene sheet. USP200207RE37780.
  6. Federico Lanzani,ITX ; Mauri Renato,ITX. Method for the production of substantially open-cell polystyrene sheet. USP2000076093751.

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