公开(公告)号：US3427120A

公开(公告)日：1969-02-11

申请号：US3427120D

申请日：1963-12-17

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SHINDO AKIO ,  FUJII ROKURO ,  SOUMA ISAO

IPC: D01F9/21 ,  C01B31/07 ,  C23C9/08

CPC classification number: D01F9/21 ,  Y10S264/19

公开(公告)号：US3886263A

公开(公告)日：1975-05-27

申请号：US32917273

申请日：1973-02-02

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SHINDO AKIO ,  NAKANISHI YOICHIRO ,  SAWADA YOSHIHIRO

IPC: D01F9/145 ,  D01F9/21 ,  D01F9/22 ,  D01F9/28 ,  D06M11/11 ,  D06M11/155 ,  D06M11/34 ,  C01B31/07

CPC classification number: D01F9/22 ,  D01F9/145 ,  D01F9/21 ,  D01F9/28 ,  D06M11/11 ,  D06M11/155 ,  D06M11/34

Abstract: According to the method of this invention, heat-resistant fibers and flame-retardant fibers are produced from organic fibers by heating the said organic fibers to a temperature between 180*C and 350*C in an atmosphere containing oxygen gas in a concentration of at least 25%, in a high oxygen content atmosphere containing acid vapor, or in a high oxygen content atmosphere and then in an acid-vapor containing, high-oxygen content atmosphere. Furthermore, the heat-resistant fibers having higher heat-resistant property (carbon and graphite fibers) are produced by heating the said flame-retardant fibers to a temperature between 350*C and 3,000*C in a non-oxidizing atmosphere or in vacuum. In accordance with the method of this invention, the duration of the entire operation of heat treatment for producing the said heat resistant fibers can be shortened to a great extent while the said-heat treatment procedure enables the heat-resistant fibers produced to have quality favorably comparable with that of the heat-resistant fibers obtainable by the conventional method.

Abstract translation: 根据本发明的方法，耐热纤维和阻燃纤维由有机纤维制成，在含氧气氛中加热所述有机纤维至180℃至350℃的温度，其浓度为 至少25％，在含有酸性蒸汽的高氧含量气氛中，或在高含氧气氛中，然后在含有高氧气氛的酸性气体中。 此外，通过在非氧化性气氛或真空中将所述阻燃纤维加热至350℃至3000℃的温度，制得具有较高耐热性的耐热纤维（碳和石墨纤维）。 根据本发明的方法，可以在很大程度上缩短用于生产所述耐热纤维的热处理的整个操作的持续时间，而所述热处理步骤使得所生产的耐热纤维具有良好的质量 与通过常规方法可获得的耐热纤维相当。

公开(公告)号：US3557020A

公开(公告)日：1971-01-19

申请号：US69700868

申请日：1968-01-11

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SHINDO AKIO ,  SOUMA ISAO ,  NAKANISHI YOICHIRO

IPC: B01J20/20 ,  C01B32/336 ,  C01B31/08

CPC classification number: C01B32/336

Abstract: WOOD OR OTHER VEGETABLE MATERIAL HAVING A NON-UNIFORM SHAPE SUCH AS SHAPELESS PARTICLE POWDER, FLAKY POWDER, CHIP AND THE OTHERS IS CARBONIZED IN AN ACIDIC ATMOSPHERE CONTAINING VAPOR OR GAS OF HYDROCHLORIC OR HYDROBROMIC ACID OR ITS ANHYDRIDE FOR 10 MINUTES TO 10 HOURS AT A TEMPERATURE OF 80-1200* C. TO OBTAIN ACTIVATED CARBON OF SUPERIOR ADSORPTION ACTIVITY IN VERY HIGH YIELDS. IF DESIRED, THE ACTIVATED CARBON SO OBTAINED IS HEATED FURTHER IN AN ATMOSPHERE CONTAINING AN OXIDIZING GAS SUCH AS STEAM, CARBON DIOXIDE GAS OR AIR, OR IN AN INERT ATMOSPHERE TO IMPROVE THE ADSORPTION ACTIVITY OF SAID CARBON.