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특허 상세정보

Foam and process for producing a carbon dioxide blowing agent

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08J-009/08   
미국특허분류(USC) 521/091 ; 521/079 ; 521/081 ; 521/097 ; 521/146 ; 521/154
출원번호 US-0968672 (1997-11-12)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Lagaly
인용정보 피인용 횟수 : 4  인용 특허 : 17
초록

The resultant thermoplastic foam can be thermoformed into various foamed articles, such as foam packaging trays. The quality of foams made from a carbon dioxide blowing agent, and particularly 100% carbon dioxide, has been found to be substantially improved by adding one or more of the foregoing additives, i.e., polysiloxane, mineral oil and, optionally, polyolefin to the polymer melt during the extrusion and foaming process. Such foams have far less ruptured cells, surface cracks and corrugation than comparable foams made with a carbon dioxide blowing a...

대표
청구항

[ What is claimed is:] [1.] A thermoplastic foam, comprising:(a) a polymeric matrix comprising a thermoplastic olefin polymer, a polysiloxane, and(b) a plurality of cells dispersed throughout said polymeric matrix and containing a blowing agent comprising carbon dioxide.

이 특허에 인용된 특허 (17)

  1. Trainor Donna R. (West Roxbury MA). Foamable hot melt polymer compositions. USP1985074529740.
  2. Vo Chau V. (Souffelweyersheim FRX). Foamable styrenic polymer gel and resulting foam. USP1995065422378.
  3. Luetkens ; Jr. Melvin L. (Batavia IL) Pischke Robert D. (Duluth GA) Schubert John C. (Marietta GA). Foamed core-reclaim multi-layer sheet and process for production thereof. USP1992075128196.
  4. 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.
  5. Corbett John M. (Newark OH) Bearden Charles R. (Midland MI). Making cross-linked styrene polymer foam. USP1984064454086.
  6. Schirmer Henry G. (Spartanburg SC). Method of making a thermoformable barrier sheet. USP1990064935089.
  7. Wroczynski Ronald J. (Delmar NY). Modified polyphenylene ether resins having improved foamability and methods of making the same. USP1988034728674.
  8. Johnson D. Emil (Canandaigua NY) Krutchen Charles M. (Pittsford NY) Sharps ; Jr. G. Vincent (Fairport NY). Polymer foam extrusion system. USP1982084344710.
  9. Johnson D. Emil (Canandaigua NY) Krutchen Charles M. (Pittsford NY) Sharps ; Jr. G. Vincent (Fairport NY). Polymer foam process. USP1984014424287.
  10. Welsh Gary C. (Midland MI). Polystyrene foam made with only carbon dioxide as a blowing agent and a process for making the same. USP1993105250577.
  11. Park Chung P. (Pickerington OH) Suh Kyung W. (Granville OH). Process for making alkenyl aromatic foam packing bodies with carbon dioxide and/or ethane blowing agent systems. USP1994025288740.
  12. Reedy Michael E. (42 First St. Keyport NJ 07735) Rider ; Jr. Edward W. (R.D. #1 ; Box 43 ; S. Plank Rd. Slate Hill NY 10973). Process for producing alkenyl aromatic foams using a combination of atmospheric and organic gases and foams produced the. USP1993125269987.
  13. Reedy Michael E. (42 First St. Keyport NJ 07735) Rider ; Jr. Edward W. (R.D. #1 Box 43 S. Plank Rd. Slate Hill NY 10973). Process for producing polystyrene foam. USP1994045302624.
  14. Ariga Nagao (Chiba JPX) Shimazu Kyotaro (Chiba JPX) Sato Hiroyuki (Yachiyo JPX). Process for producing thermoplastic resin foam. USP1986064596832.
  15. Gusavage Gerald G. (420 Trena Ave. Lancaster PA 17601) Hessen Thomas A. (641 Ridgeview Dr. Eprata PA 17522) Hardy Thomas R. (1018 N. 12th St. Lebanon PA 17042) Schirmer Henry G. (156 Edgecombe Rd. Sp. Recycling of barrier polystyrene foam scrap and barrier polystyrene foam containing recycled barrier polystyrene foam sc. USP1994075330596.
  16. Gusavage Gerald G. (Lancaster PA) Hessen Thomas A. (Ephrata PA) Hardy Thomas R. (Lebanon PA) Flye Susan R. (Spartanburg SC) Schirmer Henry G. (Spartanburg SC). Recycling of barrier polystyrene foam scrap and barrier polystyrene foam containing recycled barrier polystyrene foam sc. USP1992065118561.
  17. Schirmer Henry G. (Spartanburg SC). Thermoformable barrier sheet. USP1989074847148.