公开(公告)号：US4089798A

公开(公告)日：1978-05-16

申请号：US705922

申请日：1976-07-16

申请人： Hiroshi Sugiyama ,  Kuniki Yoshitake ,  Nobuhiko Sakata ,  Taizo Sugioka ,  Nobuhisa Mizuno

发明人： Hiroshi Sugiyama ,  Kuniki Yoshitake ,  Nobuhiko Sakata ,  Taizo Sugioka ,  Nobuhisa Mizuno

IPC分类号： C01B3/22 ,  B01J23/00 ,  C01B3/38 ,  C01B3/40 ,  C01B2/16 ,  C10G11/28

CPC分类号： C01B3/38 ,  C01B3/40 ,  C01B2203/1052 ,  Y02P20/52

摘要： Reducing gas of low CH.sub.4 content is produced by cracking a heavy hydrocarbon having a C/H atomic ratio of more than one at 800.degree.-950.degree. C. in the presence of a catalyst comprising at least one metal selected from K, Ni, Co and Mo or at least oxide of said metal, associated with alumina or a silica-alumina composite.

摘要翻译： 在包含至少一种选自K，Ni，Co的金属的催化剂的存在下，在800-950℃下裂解C / H原子比大于1的重质烃，从而生成低CH 4含量的气体。 和Mo或所述金属的至少氧化物，与氧化铝或二氧化硅 - 氧化铝复合材料相关联。

公开(公告)号：US4608150A

公开(公告)日：1986-08-26

申请号：US710021

申请日：1985-03-11

申请人： Masaaki Itoi ,  Masakatsu Ohta ,  Taizo Sugioka ,  Kunio Yoshihara ,  Hiroshi Nishitani

发明人： Masaaki Itoi ,  Masakatsu Ohta ,  Taizo Sugioka ,  Kunio Yoshihara ,  Hiroshi Nishitani

IPC分类号： C01B31/00 ,  C10C3/00 ,  C10C3/02 ,  C10C3/10 ,  D01F9/145 ,  D01F9/155 ,  C10C1/00

CPC分类号： D01F9/145 ,  C10C3/002

摘要： The invention provides a novel pitch material useful as a base material of carbon fibers having excellent mechanical properties and characterized by a unique combination of several property parameters including the content of the optically anisotropic phase of at least 80%, a content of the pyridine-insoluble matter in the range from 30 to 70% by weight, a number average molecular weight in the range from 1000 to 1400 and a softening point in the range from 330.degree. to 380.degree. C. Such a pitch material is obtained from a starting pitch of a petroleum-based residual oil freed from light oily matter through a two-step heat treatment, of which the first step is performed at 400.degree. to 460.degree. C. under a pressure of 5 to 50 mmHg and the second step is performed at 450.degree. to 550.degree. C. for 0.2 to 30 minutes under a pressure of 0.1 to 5 mmHg. The advantages obtained by use of a film evaporator in the above mentioned heat treatment are described. The time taken for the infusibilization treatment of the pitch filaments is greatly decreased when the filaments were prepared from the inventive pitch material by spinning in comparison with conventional pitches and the spinning temperature can also be relatively low.

摘要翻译： 本发明提供了一种新颖的沥青材料，其可用作具有优异机械性能的碳纤维的基础材料，并且特征在于几个性质参数的独特组合，包括至少80％的光学各向异性相的含量，不溶于吡啶的含量 物质在30至70重量％的范围内，数均分子量在1000至1400，软化点在330至380℃的范围内。这种沥青材料从起始间距 通过两步热处理从轻质油状物中除去石油基残余油，其中第一步在400-460℃下在5至50mmHg的压力下进行，第二步在450℃ 在0.1〜5mmHg的压力下，在550℃下进行0.2〜30分钟。 描述在上述热处理中使用薄膜蒸发器获得的优点。 当采用本发明的沥青材料通过与传统的间距相比进行纺丝制备长丝时，沥青丝的熔融处理所花费的时间大大降低，并且纺丝温度也可以相对较低。