After having constructed the methylene diphenyl diisocyanate （MDI） unit in Caojing district of Shanghai, BASF is considering the construction of a second MDI unit in China. In June 2007 BASF had signed with Chongqin...After having constructed the methylene diphenyl diisocyanate （MDI） unit in Caojing district of Shanghai, BASF is considering the construction of a second MDI unit in China. In June 2007 BASF had signed with Chongqing Huayi Holding （Group） Company a memorandum on construction of a 400 kt/a raw MDI unit in Chongqing. BASF has announced that it will make an in-depth assessment of competitive ad-vantage in that region, and it plans to put on stream this unitby 2010.展开更多
Polyether polyurethane was synthesized from modified wheat straw oxygen-alkaline lignin, polyethylene glycol and two different diisocyanates (diphenylemethane-4, 4’-diisocyanate, tolulene diisocyanate) by solution ca...Polyether polyurethane was synthesized from modified wheat straw oxygen-alkaline lignin, polyethylene glycol and two different diisocyanates (diphenylemethane-4, 4’-diisocyanate, tolulene diisocyanate) by solution casting method, its properties were investigated. The results show that modified wheat straw oxygen-alkaline lignin can substitute part of polyethylene glycol to react with diisocyanate to synthesize polyurethane. The molar ratio of NCO to OH and modified wheat straw oxygen-alkaline lignin content affect the properties of lignin-based polyether polyurethane respectively. The addition of plasticizer in the polyurethane synthesis process improves the properties of synthesized polyurethane, especially the elasticity of polyurethane. The synthesized polyurethane from modified wheat straw oxygen-alkali lignin can be used as both engineering plastic and hard foam plastic in future.展开更多
Toluene Diisocyanate (TDI),the important industrial manufacture material, is widely used in the production of polyurethane, paints, insulation material and electronic components. In recent years, with the deveoplement...Toluene Diisocyanate (TDI),the important industrial manufacture material, is widely used in the production of polyurethane, paints, insulation material and electronic components. In recent years, with the deveoplement of TDI appliation fields, the question caused by TDI has also arised. Summarizes the rearch of toxicology of toluene diisocyanate in domestic and abord.展开更多
文摘After having constructed the methylene diphenyl diisocyanate （MDI） unit in Caojing district of Shanghai, BASF is considering the construction of a second MDI unit in China. In June 2007 BASF had signed with Chongqing Huayi Holding （Group） Company a memorandum on construction of a 400 kt/a raw MDI unit in Chongqing. BASF has announced that it will make an in-depth assessment of competitive ad-vantage in that region, and it plans to put on stream this unitby 2010.
文摘Polyether polyurethane was synthesized from modified wheat straw oxygen-alkaline lignin, polyethylene glycol and two different diisocyanates (diphenylemethane-4, 4’-diisocyanate, tolulene diisocyanate) by solution casting method, its properties were investigated. The results show that modified wheat straw oxygen-alkaline lignin can substitute part of polyethylene glycol to react with diisocyanate to synthesize polyurethane. The molar ratio of NCO to OH and modified wheat straw oxygen-alkaline lignin content affect the properties of lignin-based polyether polyurethane respectively. The addition of plasticizer in the polyurethane synthesis process improves the properties of synthesized polyurethane, especially the elasticity of polyurethane. The synthesized polyurethane from modified wheat straw oxygen-alkali lignin can be used as both engineering plastic and hard foam plastic in future.
文摘Toluene Diisocyanate (TDI),the important industrial manufacture material, is widely used in the production of polyurethane, paints, insulation material and electronic components. In recent years, with the deveoplement of TDI appliation fields, the question caused by TDI has also arised. Summarizes the rearch of toxicology of toluene diisocyanate in domestic and abord.
