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Properties of Esterified Wood Prepared with Maleic Anhydride/Tetrabr Omophthalic Anhydride/Glycerol Mixture 被引量:1
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作者 LiJianzhang FurunoTakeshi +3 位作者 ZhouWenrui YuZhiming SunYanling ZhangDerong 《Forestry Studies in China》 CAS 2003年第3期33-38,共6页
For overcoming disadvantages of wood, an esterification process was employed and tetrabromophthalic anhydride (TBPA) was used as a reactive chemical agent to prepare an esterified wood with the high dimensional stabil... For overcoming disadvantages of wood, an esterification process was employed and tetrabromophthalic anhydride (TBPA) was used as a reactive chemical agent to prepare an esterified wood with the high dimensional stability, flame resistance, and resistance to biodegradation from water-leaching. The experimental results indicated that esterification of wood plus maleic anhydride / tetrabromophthalic anhydride / glycerol could endow wood with dimensional stability, the antiswelling efficiency during water absorption (ASEw), reduction in water absorptivity (RWA), antiswelling efficiency during moisture absorption (ASEm), moisture excluding efficiency (MEE), and oxygen index (OI) of treated wood increased with an increase in the weight percent gain (WPG). And the treated wood showed great decay resistance and resistance to water leaching, too. 展开更多
关键词 wood esterification dimensional stability tetrabromophthalic anhydride flame resistance decay resistance.
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Aromatic Bromination in Concentrated Nitric Acid
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作者 Alexander M. Andrievsky Vera I. Lomzakova +1 位作者 Mikhail K. Grachev Mikhail V. Gorelik 《Open Journal of Synthesis Theory and Applications》 2014年第2期15-20,共6页
Action of bromine in concentrated nitric acid allows carrying out mono- and polybromination of moderately deactivated aromatic compounds. 4-Chloronitrobenzene and isophthalic acid turnes into 3-bromo-4-chloronitrobenz... Action of bromine in concentrated nitric acid allows carrying out mono- and polybromination of moderately deactivated aromatic compounds. 4-Chloronitrobenzene and isophthalic acid turnes into 3-bromo-4-chloronitrobenzene and 5-bromoisophthalic acid at reaction with bromine in concentrated nitric acid at 20°C whereas in absence of bromine in the same conditions 4-chloro-1, 3-dinitrobenzene and 5-nitroisophthalic acid are formed accordingly. Presence of bromine in concentrated nitric acid changes nitrating capacity to brominating one. Terephthalic acid and phthalic anhydride at heating with bromine in concentrated nitric acid can be transformed to appropriating tetrabromo substituted compounds. 展开更多
关键词 BROMINATION NITRATION AROMATIC Compounds 3-Bromo-4-chloronitrobenzene 5 Bromoisophthalic ACID 2 3 5 6-Tetrabromoterephthalic ACID 4 6 tetrabromophthalic ANHYDRIDE
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SYNTHESIS OF DIALKYL TETRABROMOPHTHALATES BY PTC AND THEIR FLAME RETARDANCY
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作者 Xi Kui WANG Xiao Mei WANG +1 位作者 Guang Tong XU zing Rui MENG(Applied Chemistry Department.Shandong Institute of Building Materials,Jinan 250022) 《Chinese Chemical Letters》 SCIE CAS CSCD 1995年第11期935-938,共4页
Eight dialkyl tetrabromophthalates (DATBPs) were synthesized by reacting tetrabromophthalic anhydride with excess alcohols which were used not only as a reactant but also as a solvent and using a quaternary ammonium s... Eight dialkyl tetrabromophthalates (DATBPs) were synthesized by reacting tetrabromophthalic anhydride with excess alcohols which were used not only as a reactant but also as a solvent and using a quaternary ammonium salt as a phase transfer catalyst (PTC). The yields were found to be between 85-93%. Their structures were characterized by IR, NMR and elementary analysis. The flame retardant properties of the compounds were also studied. 展开更多
关键词 PTC SYNTHESIS OF DIALKYL TETRABROMOPHTHALATES BY PTC AND THEIR FLAME RETARDANCY
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