Crosslinkable polyamideimide oligomers and a method of preparation
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08G-073/14
C08G-069/26
C08L-079/08
출원번호
US-0345062
(1989-04-28)
발명자
/ 주소
Lubowitz Hyman R. (Rolling Hills Estates CA) Sheppard Clyde H. (Bellevue WA) Stephenson Ronald R. (Kirkland WA)
출원인 / 주소
The Boeing Company (Seattle WA 02)
인용정보
피인용 횟수 :
23인용 특허 :
0
초록▼
The thermooxidative stability and thermomechanical properties of advanced composites which use high performance resin matrices such as polyimides and high strength carbon fibers may be improved by sizing the carbon fibers with uncapped or capped linear polyamideimides. The uncapped linear polyamidei
The thermooxidative stability and thermomechanical properties of advanced composites which use high performance resin matrices such as polyimides and high strength carbon fibers may be improved by sizing the carbon fibers with uncapped or capped linear polyamideimides. The uncapped linear polyamideimides useful as carbon fiber sizings generally contain repeating units having the general formula: [Figure] or [Figure] wherein R2=a trivalent organic radical and generally benzenetriyl; R3=a divalent organic radical; and n=an integer sufficiently large to provide a strong, tough coating. Useful capped, linear polyamideimide oligomers may be formed by including end caps with an unsaturated functionality (Y) containing a residue selected from the group consisting of: [Figure] [Figure] [Figure] wherein R1=lower alkyl, lower alkoxy, aryl, aryloxy, substituted alkyl, substituted aryl, halogen, or mixtures thereof; j=0, 1, or 2; i=1 or 2; G=-CH2-, -O-, -S-, -SO2-, -SO-, -CO-, -CHR-, or -CR2-; T=methallyl or allyl; Me=methyl; and R=hydrogen, lower alkyl, or phenyl. Prepregs and composites having carbon fibers sized with such polyamideimides are also described.
대표청구항▼
A crosslinkable polyamideimide oligomer having the general formula: [Figure] [Figure] wherein Yi-fi-f2 and Y= [Figure] [Figure] [Figure] wherein R1=lower alkyl, lower alkoxy, aryl, aryloxy, substituted alkyl, substituted aryl, halogen, or mixtures thereof; j=0, 1, or 2; i=1 or 2; G=-CH2-, -O-, -S-,
A crosslinkable polyamideimide oligomer having the general formula: [Figure] [Figure] wherein Yi-fi-f2 and Y= [Figure] [Figure] [Figure] wherein R1=lower alkyl, lower alkoxy, aryl, aryloxy, substituted alkyl, substituted aryl, halogen, or mixtures thereof; j=0, 1, or 2; i=1 or 2; G=-CH2-, -O-, -S-, -SO2-, -SO-, -CO-, -CHR-, or -CR2-; T=methallyl or allyl; Me =methyl; R=hydrogen, lower alkyl, or phenyl; R2=a trivalent organic radical R3=a divalent organic radical; and m=a small integer.
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이 특허를 인용한 특허 (23)
Sheppard Clyde H. (Bellevue WA) Lubowitz Hyman R. (Rolling Hills Estates CA), Extended end cap monomer for making advanced composites.
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Lubowitz Hyman R. (Rolling Hills Estates CA) Sheppard Clyde H. (Bellevue WA) Stephenson Ronald R. (Kirkland WA), Method of making multidimensional polyesters.
Sheppard Clyde H. (Boeing Aerospace Company ; P.O. Box 399 ; M/S 73-09 Seattle WA 98124-2499) Lubowitz Hyman R. (26 Coral Tree Ln. Rolling Hills Estates CA 90274), Methods for making liquid molding compounds using diamines and dicyanates.
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