Издательство SAGE Publications по журналам "High Performance Polymers"
Отображаемые элементы 1-20 из 323
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(Sage Publications, 1994-04-01)4,4',5,5'-Dioxydiphthalic dianhydride (DODA), a new monomer for the synthesis of polyimide resins, has been prepared by the action of a base on a 4,5-dihalophthalic anhydride in a polar aprotic solvent. Both potassium ...
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(Sage Publications, 1995-02-01)LARCTM-8515 (Langley Research Center-8515) is an aromatic polyimide based on 3,3',4,4'-biphenyltetracarboxylic dianhydride (BPDA) and an 85:15 molar ratio of 3,4'-oxydianiline (3,4'-ODA) and 1,3-bis(3-amnophenoxy)benzene ...
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(Sage Publications, 1995-02-01)A novel amine end-capper containing two phenylethynyl groups was used to terminate an imide oligomer based on 4,4'-oxydiphthalic anhydride and 3,4'-oxydianiline. The properties of this cured di(phenylethynyl)-terminated ...
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(Sage Publications, 1993-02-01)The curing reaction of liquid epoxy resin based on l,l'-bis(4-hydroxyphenyl) cyclopentane with different amines, in the presence or absence of a fortifier, has been studied by differential scanning calorimetry (DSC). The ...
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(Sage Publications, 1992-02-01)The separation of divalent metal ion mixtures has been investigated chromatographically on columns of either gel or sol forms of alginate polyelectrolyte. Separation was obtained in the form of narrow sharp zones for the ...
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(Sage Publications, 1992-04-01)Spectrophotometric evidence for the formation of a short-lived Mn(VI) intermediate has been confirmed during the oxidation of alginae polysaccharide by potassium permanganate in alkaline medium at pH> 12. This Mn(VI) ...
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(Sage Publications, 1992-06-01)The kinetics or chemical equilibria of exchange of Ca(II), Sr(II), Ba(I), Zn(II), Cd(II), Al(III), Fe(III), Se(IV), Ce(IV) and Th(IV) counter ions in alginate gel complexes by H+ ions have been investigated titrimetrically ...
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(Sage Publications, 1994-02-01)A liquid elastomer was synthesized using butyl acrylate, acrylic acid and acrylonitrile. The elastomer was characterized and used as a toughener for a high-functionality novolac epoxy resin to improve the impact strength ...
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(Sage Publications, 1993-08-01)Cyanate ester or triazine networks are receiving considerable attention as potential candidates for high-temperature adhesives and composite matrices. Low toughness is a major drawback with most cross linked thermosetting ...
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(SAGE Publications, 1990)HPLC methods have been developed and used for the direct analysis of a wide range of anhydride materials. The results obtained enable concentrations of acid impurities to be determined with a detection limit of the order ...
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(SAGE Publications, 1990)Aryl diether diphthalic anhydrides have been prepared by the reaction of a diphenol with 4-fluorophthalic anhydride and KF in the presence of a polar, aprotic solvent. The KF acts as an HF acceptor and obviates the need ...
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(SAGE Publications, 1989)Mechanistic chentical kinetics for diaminodiphenyl sulfone-cured tetra glycidyl 4,4' diaminodiphenyl methane epoxy resins have been incorporated into a composite cure model. The results are in reasonable agreement with ...
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(Sage Publications, 1998-12-01)Six kinds of end-capped thermosetting copolyimides were prepared and applied as a junction coating resin for protection of semiconductor devices. The copolyimides are composed of aromatic dianhydrides, aromatic diamines, ...
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(Sage Publications, 1992-04-01)Two oxadiazole containing aromatic diamines were synthesized. The diamines were prepared by reaction of aminophenols with 2,5-bis(4-fluorophenyl)-4l3,4-oxadiazole in a polar aprotic solvent in the presence of potassium ...
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(Sage Publications, 1998-12-01)A series of oligomeric azo dyes has been synthesized by coupling various aromatic diazonium salts to p-hydroxy benzoic acidformaldehyde (p-HBAF) oligomer. They were evaluated in terms of their softening points, yields, ...
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(SAGE Publications, 1989)New polyesters prepared by the intefacial polycondensation of 2,6-bis(4- hydroxybenzylidene )cyclohexanone (I) and 2,6-bis(4-hydroxy-3-methoxybenzylidene)- cyclohexanone (II) with 4,4'-diphenic, isophthalolyl, terephthaloyl, ...
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(SAGE Publications, 1990-06-01)New polyesters have been synthesized via interfacial polycondensation of 2,7-bis(p-hydroxybenzylidene)cycloheptanone I with 4,4-diphenic, isophthaloyl, tere-phthaloyl, adipoyl and sebacoyl dichlorides at ambient temperature. ...
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(SAGE Publications, 1989-12-01)A new interesting class of linear, unsaturated polyesters based on diarylidenecycloalkanones containing an azo linkage in the polymer main chain have been synthesized by interfacial polycondensation of 4,4-azodibenzoyl ...
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(SAGE Publications, 1990-12-01)A new interesting class of linear unsaturated polycarbonates based on 2,5-bis(p-hydroxybenzylidene) cyclopentanone I, 2,5-divanillylidenecyclopentanone II, 2,6-bis(p-hydroxybenzylidene) cyclohexanone III, 2,6-divanillyli ...
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(SAGE Publications, 1990-12-01)A novel method for the synthesis of copoly(ester-thioester)s of high molecular weight has been developed. These polymers were prepared readily by direct polycondensation of 4,4-(terephthaloyldithio) diacetic acid I, ...
Отображаемые элементы 1-20 из 323