Lubowitz Hyman R. (Rolling Hills Estates CA) Sheppard Clyde H. (Bellevue WA)
출원인 / 주소
The Boeing Company (Seattle WA 02)
인용정보
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24인용 특허 :
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초록▼
Polyimide oligomers include (1) linear, monofunctional crosslinking oligomers prepared by condensing a monoanhydride end cap with a diamine that includes alternating ether and “Sulfone”(-SO2-, -S-, -CO-, -(CF3)2C-, or -(CH3)2C-) linkages connecting alternating aromatic radicals and with a dianhydrid
Polyimide oligomers include (1) linear, monofunctional crosslinking oligomers prepared by condensing a monoanhydride end cap with a diamine that includes alternating ether and “Sulfone”(-SO2-, -S-, -CO-, -(CF3)2C-, or -(CH3)2C-) linkages connecting alternating aromatic radicals and with a dianhydride (or dianhydride mixture), particularly the unsaturated, aliphatic dianhydride commonly known as MCTC; (2) linear, mono- or difunctional crosslinking oligomers prepared by condensing an amine end cap with a diamine and a dianhydride; and (3) multidimensional, crosslinking oligomers having an aromatic hub and at least three radiating arms connected to the hub, each arm including a crosslinking end cap at its distal end and at least one imide linkage. Blends, prepregs, and composites can be prepared from the oligomers. Multidimensional oligomers can be prepared using ether-anhydride intermediates or etheramine intermediates formed by reacting a suitable hub with nitrophthalic anhydride or aminophenol.
대표청구항▼
A monofunctional crosslinkable, thermoplastic, polyimide oligomer which is the product formed by reacting under an inert gas atmosphere a mixture comprising: (a) two moles of a crosslinkable monoanhydride selected from the group consisting of: [Figure] [Figure] [Figure] wherein Me=methyl; G=-O-, -SO
A monofunctional crosslinkable, thermoplastic, polyimide oligomer which is the product formed by reacting under an inert gas atmosphere a mixture comprising: (a) two moles of a crosslinkable monoanhydride selected from the group consisting of: [Figure] [Figure] [Figure] wherein Me=methyl; G=-O-, -SO2-, -CH2-, or -S-; E=allyl or methallyl; R1=lower alkoxy, aryl, substituted aryl, lower alkyl, substituted alkyl, aryloxy, or halogen; and j=0, 1, or 2 (b) n+1 moles of a polyaryl diamine having terminal amino groups, the diamine including alternating aryl radicals (-Ar-) connected together by alternating ether (-O-) and sulfone (-L-) linkages, wherein each sulfone linkage (-L-) is selected from the group consisting of -SO2-, -S-, -CO-, -(CF3)2C-, and -(CH3)2C-, so that the diamine has a general formula: H2N-Ar-O-[-Ar-L-Ar-O]mAr-NH2 wherein Ar=an aromatic radial, and m=a small integer greater than or equal to 1; and (c) n moles of at least one dianhydride selected from the group consisting of, [Figure] wherein M=-SO2-, -S-, -O-, -(CH3)2C-, CO or -(CF3)2C-, and wherein n=an integer selected so that the oligomer prossesses thermoplastic properties and has an average formula weight of between about 5,000 to 40,000.
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이 특허를 인용한 특허 (24)
Tan, Loon-Seng; Wang, David Huabin, Aromatic diamines containing three ether-linked-benzonitrile moieties, polymers thereof, and methods of making the same.
Tan, Loon-Seng; Wang, David Huabin; Lee, Kyung Min; White, Timothy J., Azobenzene-containing glassy polyimides capable of photo-induced large-angle bending and methods of making the same.
Lubowitz Hyman R. (Rolling Hills Estates CA) Sheppard Clyde H. (Bellevue WA) Stephenson Ronald R. (Kirkland WA), Method of making multidimensional polyesters.
Vail, III, William Banning, Methods and apparatus to prevent failures of fiber-reinforced composite materials under compressive stresses caused by fluids and gases invading microfractures in the materials.
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.
Tan, Loon-Seng; Wang, David Huabin, Multifunctional crosslinkers for shape-memory polyimides, polyamides and poly(amide-imides) and methods of making the same.
Tan, Loon-Seng; Wang, David Huabin, Multifunctional crosslinkers for shape-memory polyimides, polyamides and poly(amide-imides) and methods of making the same.
Tan, Loon-Seng; Wang, David Huabin; Lee, Kyung Min; White, Timothy J., Photomechanically active copolyimides derived from an azobenzenediamine, a rigid dianhydride, and a flexible dianhydride.
Tan, Loon-Seng; Wang, David Huabin; Lee, Kyung Min; White, Timothy J., Photomechanically active copolyimides derived from an azobenzenediamine, a rigid dianhydride, and a flexible dianhydride.
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