A novel bismaleimide, 2,2ะ-dimethyl-4,4ะ-bis(4-maleimidophenoxy)biphenyl, containing noncoplanar 2,2ะ-dimethylbiphenylene and flexible ether units in the polymer backbone was synthesized from 2,2ะ-dimethyl-4,4ะ-bis(4-aminophenoxy)biphenyl with maleic anhydride. The bismaleimide was reacted with 11 d
Synthesis and properties of novel polyaspartimides from 2,7-bis(4- maleimidophenoxy)naphthalene and aromatic diamines
โ Scribed by Chun-Shan Wang; Hann-Jang Hwang
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 580 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0032-3861
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A naphthalene unit-containing bis(ether anhydride), 2,7-bis(3,4-dicarboxyphenoxy)naphthalene dianhydride, was prepared in three steps starting from the nucleophilic nitrodisplacement reaction of 2,7-dihydroxynaphthalene and 4-nitrophthalonitrile in N,N-dimethylformamide (DMF) solution in the presenc
A new naphthalene unit-containing bis(ether anhydride), 2,6-bis(3,4-dicarboxyphenoxy)naphthalene dianhydride, was synthesized in three steps starting from the nucleophilic nitrodisplacement reaction of 2,6-dihydroxynaphthalene and 4nitrophthalonitrile in N,N-dimethylformamide (DMF) solution in the p
## SYNOPSIS A series of novel bis(phen0xy)naphthalene-containing polyamides having inherent viscosity up to 2.02 dL/g were synthesized by the direct polycondensation of the diamine 1,7bis(4-aminophenoxy)naphthalene with various aromatic dicarboxylic acids in N-methyl-8-pyrrolidone (NMP) using trip
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Aromatic tetracarboxylic dianhydride having crank and twisted noncoplanar structure, 2,2 -bis(3,4-dicarboxyphenoxy)-1,1 -binaphthyl dianhydride, was synthesized by the reaction of 4-nitrophthalonitrile with 2,2 -dihydroxy-1,1 -binaphthyl, followed by alkaline hydrolysis of the intermediate bis(ether