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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0572755 (1995-06-05) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 4 인용 특허 : 371 |
High performance polyester sulfone oligomers are prepared for aerospace applications by condensing mono- or difunctional crosslinkable end caps (i.e. unsaturated hydrocarbons having one or two crosslinking sites) with dicarboxylic acid halides and dialcohols (i.e. diols). Multidimensional oligomers
High performance polyester sulfone oligomers are prepared for aerospace applications by condensing mono- or difunctional crosslinkable end caps (i.e. unsaturated hydrocarbons having one or two crosslinking sites) with dicarboxylic acid halides and dialcohols (i.e. diols). Multidimensional oligomers have an aromatic hub from which the polyester chains radiate. Blends of the linear and multidimensional oligomers can be made using compatible, non-crosslinking polymers. Prepregs and composites are formed from the oligomers or blends.
[ We claim:] [1.] A method for making a multidimensional polyester oligomer comprising the step of:condensing about 1 mole of an aromatic hub that has at least three --COX functionalities with at least 3 moles of an imidophenol of the formula: EQU D.sub.i --.phi.--OH reini=1 or 2;.phi.=phenyl;D= [ S
[ We claim:] [1.] A method for making a multidimensional polyester oligomer comprising the step of:condensing about 1 mole of an aromatic hub that has at least three --COX functionalities with at least 3 moles of an imidophenol of the formula: EQU D.sub.i --.phi.--OH reini=1 or 2;.phi.=phenyl;D= [ STR 21 ] R.sub.1 =lower alkyl, lower alkoxy, aryl, aryloxy, substituted alkyl, substituted aryl, halogen, or mixtures thereof;j=0, 1, or 2;G=--CH.sub.2 --, --O--, --S--, or --SO.sub.2 --;T=methallyl or allyl;Me-methyl; andX=halogen. [11.] A method for making a multidimensional, polyester oligomer comprising the step of:condensing a mixture of about 1 mole of an aromatic hub that has at least about three --OH functionalities with at least about 3 moles of a dicarboxylic acid halide and at least about 3 moles of an imidophenol of the formula: EQU D.sub.i --.phi.--OH rein D= [ STR 34 ] R.sub.1 =lower alkyl, lower alkoxy, aryl, aryloxy, substituted alkyl, substituted aryl, halogen, or mixtures thereof;j=0, 1, or 2;G=--CH.sub.2 --, --O--, --S--, or --S.sub.2 --;T=methallyl or allyl;Me=methyl;i=1 or 2; and.phi.=phenyl. The method of claim 11 wherein the mixture includes at least about 3 moles of a dialcohol and wherein the ratio of dicarboxylic acid halide:dialcohol is about (n+1):n, wherein n equals the number of --OH functionalities on the hub. The method of claim 12 wherein the dialcohol is selected from the group consisting of:(a) hydroquinone; (b) bisphenol-A; (c) p,p'-biphenol; (d) 4,4'-dihydroxydiphenylsulfide; (e) 4,4'-dihydroxydiphenylhexafluoropropane; (f) a dialcohol having a Schiff base segment selected from the group consisting of: [ STR 35 ] wherein R=is selected from the group consisting of: phenyl:biphenyl:naphthyl: anda radical of the general formula: [ STR 36 ] wherein W=--CH.sub.2 -- or --SO.sub.2 --; (g) a dialcohol selected from the group consisting of: [ STR 37 ] wherein L is --CH--, --(CH.sub.3).sub.2 C--, --(CF.sub.3).sub.2 C--, --O--, --S--, --SO.sub.2 --, or --CO--;Me=methyl;m=an integer, generally less than 5; andD=any of --CO--, --SO.sub.2 --, or --(CF.sub.3).sub.2 C--; and a dialcohol which is:HO--Ar--OH;HO--Ar--L--Ar'--L--Ar--OH;HO--Ar'--L--Ar--L--Ar'--OH; [ STR 38 ] T and T.sub.1 =lower alkyl, lower alkoxy, aryl, aryloxy, substituted alkyl, substituted aryl, halogen, or mixtures thereof:q=0-4;k=0-3; andj=0, 1, or 2. The method of claim 11 wherein the hub is phloroglucinol or cyanuric acid and wherein the diacid halide is selected from the group consisting of: EQU XOC--.xi.--COX rein.xi.=(a) phenyl:(b) naphthyl:(c) biphenyl:(d) a polyaryl "sulfone" divalent radical of the general formula: [ STR 39 ] wherein D=--S--, --O--, --CO--, --SO.sub.2 --, --(CH.sub.3).sub.2 C--, --(CF.sub.3).sub.2 C--, or mixtures thereof throughout the chain;(e) a divalent radical having conductive linkages, illustrated by Schiff base compounds selected from the group consisting of: [ STR 40 ] wherein R is selected from the group consisting of: phenyl; biphenyl; naphthyl; and a divalent radical of the general formula: [ STR 41 ] wherein W=--SO.sub.2 -- or --CH.sub.2 --; and q=0-4; (f) a divalent radical of the general formula: EQU --R.sup.1 --NHCO--.phi.--CONH--R.sup.1 -- rein R.sup.1 =a C.sub.2 to C.sub.12 divalent aliphatic, alicyclic, or aromatic radical, and p1 (g) a residue selected from the group consisting ofadipylchloride,malonyl chloride,succinyl chloride,glutaryl chloride,pimelic acid dichloride,suberic acid dichloride,azelaic acid dichloride,sebacic acid dichloride,dodecandioic acid dichloride,phthaloyl chloride,isophthaloyl chloride,terephthaloyl chloride, 4-naphthalene dicarboxylic acid dichloride, and 4,4'-diphenylether dicarboxylic acid dichloride. The method of claim 14 wherein i is 2.
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