IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0868295
(1992-04-14)
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발명자
/ 주소 |
- Lubowitz Hyman R. (Rolling Hills Estates CA) Sheppard Clyde H. (Bellevue WA)
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출원인 / 주소 |
- The Boeing Company (Seattle WA 02)
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인용정보 |
피인용 횟수 :
14 인용 특허 :
0 |
초록
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High performance composites can be made from linear or multidimensional oligomer or blends that include unsaturated hydrocarbon crosslinking functionalities linked to a pyrimidine radical on the terminal ends of the polymeric backbones of the oligomers. The oligomers are made by condensing pyrimidin
High performance composites can be made from linear or multidimensional oligomer or blends that include unsaturated hydrocarbon crosslinking functionalities linked to a pyrimidine radical on the terminal ends of the polymeric backbones of the oligomers. The oligomers are made by condensing pyrimidine-based end-cap monomers of the formula: [Figure] [Figure] [Figure] [Figure] [Figure] wherein R1=lower alkyl, lower alkoxy, aryl, aryloxy, substituted alkyl, substituted aryl, halogen, or mixtures thereof; j=0, 1, or 2; G=-CH2-, -O-, -S-, -SO-, -CO-, -CHR-, -CR2-, or -SO2-; T=methallyl or allyl; Me=methyl; and R=hydrogen, lower alkyl, or phenyl, with suitable polymeric precursors.
대표청구항
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A multidimensional oligomer useful for preparing high performance, advanced composites, comprising: Ar-(P)m-(E)-]w wherein w=a small integer greater than or equal to 3; Ar=an aromatic radical or valency w; P=a divalent hydrocarbon radical; m=a small integer, generally from 0-5; E= [Figure] [Figure
A multidimensional oligomer useful for preparing high performance, advanced composites, comprising: Ar-(P)m-(E)-]w wherein w=a small integer greater than or equal to 3; Ar=an aromatic radical or valency w; P=a divalent hydrocarbon radical; m=a small integer, generally from 0-5; E= [Figure] [Figure] [Figure] [Figure] [Figure] wherein R1=lower alkyl, lower alkoxy, aryl, aryloxy, substituted alkyl, substituted aryl, halogen, or mixtures thereof; j=0, 1, or 2; G=-CH2-, -O-, -S-, -SO-, -CO-, -CHR-, -CR2-, or -SO2-; T=methallyl or allyl; Me=methyl; and R=hydrogen, lower alkyl, or phenyl.
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