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Thermally adaptive polymers and prepolymers and methods of making in which an imide is formed from a polyanhydride oligo

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08G-018/14   
미국특허분류(USC) 521/106 ; 521/157 ; 528/51 ; 528/73
출원번호 US-0769863 (1985-08-27)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 2  인용 특허 : 9
초록

Reaction of an aromatic dianhydride with a polycyclic aromatic primary diamine at a controlled reaction rate yields a diamic acid dianhydride oligomer. The oligomer may be a precursor for an imide foam which forms at low temperature, has outstanding physical characteristics, and is extremely heat resistant. The diamic acid moiety may be converted to diimide, and other modifications of the oligomer are disclosed. Other derivatives of the oligomers are also disclosed.

대표
청구항

A polymeric foam consisting of repetitive units, each of said units comprising an imide linkage and an amic acid group, said amic acid group consisting of a carboxyl group and a singly substituted amide linkage attached to adjacent carbon atoms.

이 특허에 인용된 특허 (9)

  1. Frosch Robert A. Administrator of the National Aeronautics and Space Administration ; with respect to an invention of ( San Jose CA) Sawko Paul M. (San Jose CA) Riccitiello Salvatore R. (San Jose CA). Ambient cure polyimide foams prepared from aromatic polyisocyanates, aromatic polycarboxylic compounds, furfuryl alcohol. USP1980014184021.
  2. Gagliani John (San Diego CA) Long John V. (El Cajon CA). Method of making foamed copolyimides and product obtained therefrom. USP1976063966652.
  3. Gagliani John (San Diego CA) Lee Raymond (San Diego CA) Wilcoxson Anthony L. (San Diego CA). Methods of preparing polyimides and artifacts composed thereof. USP1984034439381.
  4. Gagliani John (San Diego CA) Lee Raymond (San Diego CA) Wilcoxson Anthony L. (San Diego CA). Methods of preparing polyimides and artifacts composed thereof. USP1981124305796.
  5. Waitkus Phillip A. (Sheboygan WI) D\Alelio Gaetano F. (South Bend IN). Polyimide derivatives having terminal unsaturated amides. USP1982024316843.
  6. Gagliani John (Schaumburg IL) Lee Raymond (Elk Grove Village IL) Sorathia Usman A. K. (Elk Grove Village IL). Polyimide foams. USP1982114360604.
  7. Gagliani John (San Diego CA). Polyimides. USP1980124241193.
  8. Bower George M. (Pittsburgh PA) Skena Richard M. (Murrysville PA). Polymers prepared from imide containing dianhydrides. USP1976053954710.
  9. Maekawa Iwao (Hitachi JPX) Makino Daisuke (Hitachi JPX). Process for producing polyimide-amide-carboxylic acid. USP1982074338427.

이 특허를 인용한 특허 피인용횟수: 2

  1. Feldman Rubin. Insulative shield, particularly for automotive exhaust components. USP1999115974784.
  2. Dewhurst John E. (Macungie PA). Process and compositions for production of moldings. USP1990104963640.

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