Calderon v, garcia fc, de la pena jl, maya em, garcia jm (2006) synthesis and characterization of new aromatic polyamides bearing crown ethers or their dipodal counterparts in the pendant structure i. Details of the synthesis and characterization data of the dinitro intermediate 2 and diamine 3 have been described in a preceding article15 commercially available aromatic tetracarboxylic dianhydrides such as pyromellitic dianhydride (pmda) (4a) (aldrich), 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (btda) (4c) (aldrich), 4,4. A new triphenylpyridine-containing aromatic diamine monomer named 4-phenyl-2,6-bis(4-aminophenyl) pyridine was successfully synthesized a series of polyimides (pis) with triphenylpyridine moieties were prepared from the newly synthesized diamine monomer via a one-step polymerization with oxydiphthalicanhydride. Synthesis and characterization of highly refractive polyimides derived from thiophene-containing aromatic diamines and aromatic dianhydrides namiko fukuzaki , tomoya higashihara , shinji ando and mitsuru ueda.
Synthesis of new diamines viz 4apb, 4appb and from new series of polyamides/copolyamides to study of various properties like viscosity solubility, thermal and morphological synthesis and characterization of aromatic polyamides containing ether ketone ether. Synthesis, characterization, and mechanical properties of an injection moldable polyimide based on 1,4-diaminobutane synthesis and characterization of new water-soluble precursors of polyimides laser light-scattering studies of soluble high performance fluorine-containing polyimides. Synthesis and characterization of novel polyamides from new aromatic phosphonate diamine monomer in the present work we report the synthesis and characterization either of the monomer 1 and of their aliphatic–aromatic and fully aromatic polyamides.
Synthesis and characterization of polyamides, polyimides and polyesters containing flexibilizing groups a thesis submitted to the university of pune for the degree of doctor of philosophy in chapter 4a synthesis and characterization of polyimides from aromatic. Synthesis and characterization of some new aromatic diamine monomers 1021 mechanism of the reaction of aniline with 4-amino- n , n - dimethylaniline ( kareem, 2000 ) in the presence of oxidant is. Synthesis and characterization of new copoly(amide-imide)s based on 1,3-bis[4,4'-(trimellitimido)phenoxy]propane and fumaric acid aromatic polyimides (pis) are well known for their excellent thermal stabilities, electric peaks related to diamine moiety in the center of this compound were appeared in 707-738 ppm regions (below 8 ppm).
Synthesis and characterization of highly soluble and oxygen permeable new polyimides based on twisted biphenyl dianhydride and spirobifluorene diamine yun-hi kim , hyung-sun kim , and soon-ki kwon. In this research work, we wish to report the synthesis and characterization of polyamides, which were obtained from the reaction of a new monomer (5, pda), containing 2,6-bis(2-thio-2-(4-phenylcarboxy)-1-oxo)pyridine subunit, and aromatic diamines under microwave irradiation. Al-qadisiyha journal for science vol19 no 3 year 2014 mohammed a\ mohammed h issn 1997-2490 44 synthesis and characterization of novel aromatic polyamides containing pyridine heterocyclic ring and schiff-base.
The new aromatic diamine monomer is stable in atmosphere at room temperature and pure enough for polymerization with commercial aromatic dianhydride monomers to prepare pis the detail characterizations on the diamine monomer o , p- 6fpapp were done by ft-ir ( figure 3 ), 1 h nmr techniques ( figure 4 ) and elemental analyses, which support. A series of new aromatic polyamides containing phenanthrimidazole ring in the main chain was prepared by direct polycondensation of the prepared diamine with four commercially available aromatic and aliphatic diacids. The synthesis and the characterization of new dinuclear copper(ii) compounds of general formula [(l a–d) 2 cu 2 (μ-n–n)](clo 4) 2 (1–6) with either neutral aliphatic diamine (n–n = piperazine, pip) or aromatic diimine (n–n = 4,4′-bipyridine, 4,4′-bipy) linker are reported.
A new aromatic sulfone ether diamine was synthesized by nucleophilic aromatic substitution reaction of 5-amino-1-naphthol with bis(4-chlorophenyl) sulfone in the presence of potassium carbonate in a polar aprotic solvent. Review article synthesis and characterization of some new aromatic diamine monomers from oxidative coupling of anilines and substituted aniline with 4-amino-n,n-dimethyl aniline. Synthesis and characterization of polyimines based on a flexible diamine section a-research paper eur chem bull, 2013, 2(9), 631-636 doi: 1017628/ecb20132631 632 point apparatus. A new aromatic diamine with a trifluoromethyl pendent group, 1,4-bis((4-amino-2-(trifluoromethyl)phenoxy)methyl)cyclohexane, was successfully synthesized in two steps from 1,4-cyclohexanedimethanol and 2-chloro-5-nitrobenzotrifluoride as starting materials.
Synthesis and characterization of soluble and thermally stable triphenylpyridine-containing aromatic polyimides diamine a new signal at 5437 ppm appeared in the 1h nmr spectrum of compound 2 (fig 1b), which was characteristic of amino groups. Abstract a diamine monomer, 4,4’-bis(5-amino-2-pyridinoxy)benzophenone, was designed and synthesized, and used to react with commercially different kinds of aromatic dianhydrides to prepare a series of polyimides containing pyridine and ketone units via the classical two-step procedure. Synthesis and characterization of some new aromatic diamine monomers from oxidative coupling of anilines and substituted aniline with 4-amino-n,n-dimethyl aniline author links open overlay panel kuestan a ibrahim.