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High molecular weight polyanhydride and preparation thereof 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • C08G-063/00
출원번호 US-0892809 (1986-08-01)
발명자 / 주소
  • Domb Abraham J. (Brookline MA) Langer Robert S. (Somerville MA)
출원인 / 주소
  • Massachusetts Institute of Technology (Cambridge MA 02)
인용정보 피인용 횟수 : 136  인용 특허 : 0

초록

High molecular weight polyanhydrides, defined as polyanhydrides having a molecular weight average greater than 20,000 or an intrinsic viscosity of greater than 0.3 dl/g in an organic solvent at room temperature, are formed by melt polycondensation of highly pure isolated prepolymers under optimized

대표청구항

A high molecular weight polyanhydride having a weight average molecular weight of greater than 20,000 and an intrinsic viscosity of greater than 0.3 dl/g in chloroform at 23°C., said polyanhydride produced from at least one dicarboxylic acid selected from the group consisting of: aliphatic dicarboxy

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