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Citation: Chu Qinghui, Ding Mengxian. Synthesis of Polyimides with β-Diketone Units in Main Chain[J]. Chinese Journal of Applied Chemistry, ;1999, 16(6): 29-32. shu

Synthesis of Polyimides with β-Diketone Units in Main Chain

1.
Polymer Chemistry Laboratory, Chinese Academy of Sciences and China Petro-Chemical Corporation, Changchun Institute of Applied Chemistry,Chinese Academy of Sciences, Changchun 130022

Received Date: 13 April 1999
Available Online: 28 June 1999

A novel β-diketone diamine, 1-(4-aminophenyl)-3-(3-aminophenyl)-1, 3-propanedione (1) was prepared by reduction of the corresponding dinitro compound with hydrogen over 10% Pd/C.Five polyimides containing β-dike-tone units in main chain were prepared from the β-diketone diamine and aromatic dianhydrides.The intermediate poly(amic acid)s(3) had inherent viscosities of 0.31-1.00dL/g.The polyimides obtained had glass-transition temperatures between 296℃ and 304℃ (by DSC) and 10% weight loss temperatures above 428℃ in both air and nitrogen atmospheres.
- polyimide,
- β-diketone,
- synthesis
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