$\require{mediawiki-texvc}$
  • 검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
  • 검색연산자
검색연산자 기능 검색시 예
() 우선순위가 가장 높은 연산자 예1) (나노 (기계 | machine))
공백 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 예1) (나노 기계)
예2) 나노 장영실
| 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 예1) (줄기세포 | 면역)
예2) 줄기세포 | 장영실
! NOT 이후에 있는 검색어가 포함된 문서는 제외 예1) (황금 !백금)
예2) !image
* 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 예) semi*
"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

특허 상세정보

Foaming system for rigid urethane and isocyanurate foams based on polyethers and aromatic polyester polyols

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08G-018/14    C08G-018/42    C08G-018/76    C08G-018/48   
미국특허분류(USC) 521/131 ; 521/127 ; 521/129 ; 521/173
출원번호 US-0734528 (1985-05-16)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 11  인용 특허 : 6
초록

Improved fluorocarbon blowing agents composed of blends of (a) CFC-11, trichlorofluoromethane, with (b) CFC-123 or CFC-123a, dichlorotrifluoroethane, have been found which impart significant improvement in the solubility characteristics of rigid urethane foam systems that contain significant amounts of aromatic polyester polyols. A substantial increase in the solubility of the CFC-11/CFC-123 or CFC-11/CFC-123a blends over CFC-11 alone in typical rigid urethane foam premix systems containing variable concentrations or aromatic polyester polyol is obtained...

대표
청구항

A mixture comprising a foamable polyurethane-forming composition reactive with polyisocyanate comprising from about 20 percent to about 80 percent by weight of an aromatic polyester polyol based on the total polyol composition and from about 80 percent to about 20 percent of a polyether polyol, with a fluorocarbon blowing agent comprising a blend of at least one isomer of dichlorotrifluoroethane and trichlorofluoromethane in a ratio of the dichlorotrifluoroethane to trichlorofluoromethane of from about 1:9 to about 3:7 and wherein the total blowing agent...

이 특허를 인용한 특허 피인용횟수: 11

  1. Lund Earl E. A. (West Seneca NY) Shankland Ian R. (Williamsville NY) Swan Ellen L. (Ransomville NY). Azeotrope-like compositions of 1,2-difluoroethane and dichlorotrifluoroethane. USP1991034997589.
  2. Lund Earl E. A. (West Seneca NY) Richard Robert G. (Cheektowaga NY) Shankland Ian R. (Williamsville NY). Azeotrope-like compositions of trichlorofluoromethane, dichlorotrifluoroethane and isopentane. USP1990024900365.
  3. Ogawa, Motosuke; Fukazawa, Hiromitsu; Ogawa, Yasumasa. Blowing agent composition for preparing a rigid polyurethane foam. USP1991075035833.
  4. Winterton Neil (Pantasaph GBX) Carey John G. (Warrington GBX). Chlorofluorohydrocarbon compositions. USP1990094954287.
  5. Bogdan Mary Charlotte ; Bement Leslie Bruce ; Decaire Barbara Ruth ; Konopa Dennis Paul ; Kieta Harold John ; Singh Rajiv Ratna. Hydrofluorocarbon blown foam and method for preparation thereof. USP2000076086788.
  6. Bogdan, Mary Charlotte; Bement, Leslie Bruce; Decaire, Barbara Ruth; Konopa, Dennis Paul; Kieta, Harold John; Singh, Rajiv Ratna. Hydrofluorocarbon blown foam and method for preparation thereof. USP2003046545063.
  7. Lin Chung Y. (Orange CT). Polyurethane foams manufactured with mixed gas/liquid blowing agents. USP1991024996242.
  8. Bartlett Philip L. (Wilmington DE) Creazzo Joseph A. (Wilmington DE). Process for producing closed-cell polyurethane foam compositions expanded with mixtures of blowing agents. USP1990054927863.
  9. Doerge Herman P. (Pittsburgh PA). Rigid foams using blends of chlorofluorocarbons and alkyl alkanoates as blowing agent. USP1990104960804.
  10. Henry Richard G.. Zero volatile organic compound compositions based upon organic solvents which are negligibly reactive with hydroxyl radical and do not contribute appreciably to the formation of ground based ozone. USP2000046048471.
  11. Henry Richard G.. Zero volitile organic solvent compositions. USP2001106306943.