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公开(公告)号:US06689336B2
公开(公告)日:2004-02-10
申请号:US10052737
申请日:2002-01-23
IPC分类号: C01B3102
CPC分类号: C04B38/0022 , C04B35/524 , C04B38/0058 , C04B38/0067 , C04B38/0074 , C04B35/52 , C04B35/522
摘要: A carbon foam obtained by heat-treating a mesophase pitch whose softening point is 300° C. or less according to an elevated flow tester, whose ratio (Daromatic/Daliphatic) of the absorption intensity of an aromatic C—H stretching vibration, measured with FT-IR, to the absorption intensity of an aliphatic C—H stretching vibration, measured with FT-IR, is 4.0 or less and whose optically anisotropic content is at least 80%, a graphite foam obtained by heat-treating the carbon foam recited above at a temperature of 2,000° C. or higher and production processes of these.
摘要翻译: 根据升高的流动测试仪,通过用FT-测量仪测量芳族CH伸缩振动的吸收强度的比率(Daromatic / Daliphatic),将软化点为300℃以下的中间相沥青热处理得到的碳泡沫, IR与通过FT-IR测定的脂肪族CH伸缩振动的吸收强度为4.0以下,光学各向异性含量为80%以上的石墨泡沫体,以上述碳热发泡体的温度 为2000℃以上,这些的制造方法。
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公开(公告)号:US5872291A
公开(公告)日:1999-02-16
申请号:US993704
申请日:1997-12-18
CPC分类号: C07C51/58
摘要: Provided is a process for producing benzoyl chlorides which comprises reacting an aromatic aldehyde with chlorine in liquid phase in the presence of inert gas, whereby the generation of benzal chlorides by products whose separation is difficult can be suppressed.
摘要翻译: 提供了一种生产苯甲酰氯的方法,其包括在惰性气体存在下使芳族醛与氯在液相中反应,从而可以抑制由难以分离的产物产生的亚氯氰化物。
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