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High melt index polystyrene foam and method

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08J-009/08   
미국특허분류(USC) 264/51 ; 521/79 ; 521/97 ; 521/146
출원번호 US-0734836 (1991-07-24)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 18  인용 특허 : 0
초록
▼

A polystyrene resin in foam form having a basis weight of less than about 20 g/100 in2 and a density of about 6 lbs./ft3 or less, the foam precursor of which is either a polystyrene having a melt index of about 8 or more or a polystyrene in combination with a minor proportion of any other material which will result in a melt index of about 8 or more. A method of forming such a polystyrene resin foam structure includes combining the resin in molten form under pressure with the blowing agent of at least approximately 100% carbon dioxide and extruding the m...

대표
청구항

In a method for forming foamed polystyrene the improvement consisting of employing polystyrene resin or a polystyrene resin composition having a melt index of about 8 or more as the foam precursor and defining the foam cell structure by employing at least approximately 100% carbon dioxide to yield a foam structure having a basis weight of less than 20 gms/100 in2 and a density of about 6 lbs/ft3 or less.

이 특허를 인용한 특허 피인용횟수: 18

  1. Shmidt Creston D. ; Imeokparia Daniel D. ; Suh Kyung W. ; Malone Bruce A. ; Franklin Ken. Extruded, open-cell microcellular alkenyl aromatic polymer foams, process for making and articles made therefrom. USP1999015863960.
  2. Shmidt Creston D. ; Imeopkaria Daniel D. ; Suh Kyung W. ; Malone Bruce A. ; Franklin Ken. Extruded, open-cell microcellular alkenyl aromatic polymer foams, process for making, and articles made therefrom. USP1998075780521.
  3. Shmidt Creston D. (Nashport OH) Imeokparia Daniel D. (Pickerington OH) Suh Kyung W. (Granville OH). Extruded, open-cell microcellular alkenylaromatic polymer foams and process for making. USP1997105674916.
  4. Gusavage Gerald G. ; Schirmer Henry G. ; Hessen Thomas A.. Foam and process for producing a carbon dioxide blowing agent. USP1999115994420.
  5. Suh Nam P. ; Hermann Torsten,DEX. Gear throttle as a nucleation device in a continuous microcellular extrusion system. USP1999126005013.
  6. Wu Wen Pao ; Francis Gary A.. High productivity, low fugitive VOC emission foam process. USP1999085939463.
  7. Wu Wen Pao ; Francis Gary A.. High productivity, low fugitive emission foams and foam processes. USP2000106136875.
  8. Baker, Andrew T.; Blenke, Timothy James; Colman, Charles W.; Colombo, Edward A.; Fish, Jeffrey E.; Yang, Kaiyuan; Garvey, Michael Joseph; Krueger, Jeffrey Jennings; Mallory, Mary Frances; Pierce, Joseph E.; Radwanski, Fred Robert; Ranganathan, Sridhar; Waldroup, Donald E.. Hybrid absorbent foam and articles containing it. USP2012048158689.
  9. Krueger,Jeffrey Jennings; Richard,Renette E.. Low density flexible resilient absorbent open-cell thermoplastic foam. USP2007117291382.
  10. Paquet Andrew N. (Granville OH) Griffin Warren H. (Granville OH). Low molecular weight alkenyl aromatic polymer foam. USP1997115688832.
  11. Krueger,Jeffrey Jennings; Radwanski,Fred Robert; Reichmann,Mark G.; Elliker,Peter Robert; Yahiaoui,Ali; Richard,Renette E.; Thomas,Oomman Painummoottil. Low-density, open-cell, soft, flexible, thermoplastic, absorbent foam and method of making foam. USP2008047358282.
  12. Burnham Theodore A. ; Cha Sung W. ; Walat Robert H. ; Kim Roland Y. ; Anderson Jere R. ; Stevenson James F. ; Suh Nam P. ; Pallaver Matthew. Method and apparatus for microcellular polymer extrusion. USP2001096284810.
  13. Burnham, Theodore A.; Cha, Sung W.; Walat, Robert H.; Kim, Roland Y.; Anderson, Jere R.; Stevenson, James F.; Suh, Nam P.; Pallaver, Matthew. Method and apparatus for microcellular polymer extrusion. USP2005046884377.
  14. Joseph M. DeSimone ; Saad A. Khan ; Joseph R. Royer ; Richard J. Spontak ; Teri Anne Walker. Method of making foamed materials using surfactants and carbon dioxide. USP2002066403663.
  15. DeSimone, Joseph M.; Khan, Saad A.; Royer, Joseph R.; Spontak, Richard J.; Walker, Teri Anne; Gay, Yvon J.; Siripurapu, Srinivas. Methods of making foamed materials of blended thermoplastic polymers using carbon dioxide. USP2004096790870.
  16. Sanyasi Graham Ramlu,AUX. Plastics foam and method of manufacturing same. USP2000106127440.
  17. Handa,Y. Paul; Gu,Jiayan. Polyolefin foams made with isopentane-based blowing agents. USP2006057045556.
  18. Francis,Gary A.; Wu,Wen P.. Reduced VOC emission alkenyl aromatic polymer foams and processes. USP2007017166248.

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