发明名称 |
Method of controlling dust |
摘要 |
In a method for preventing dust of a powdery material by mixing the powdery material with a polytetrafluoroethylene and subjecting the mixture to a compression-shearing action taken at temperatures from about 20 to 200 DEG C thereby the polytetrafluoroethylene is fibrillated to prevent dusting of the powdery material, the method is characterized by that polytetrafluoroethylene is an aqueous emulsion of a homopolymer of tetrafluoroethylene, the homopolymer has a specific gravity of not larger than 2.20 and an average particle size of 0.10-0.50 mu , and the emulsion contains a hydrocarbon-base anionic surfactant of not less than 1.0wt% of the polytetrafluoroethylene as the emulsion stabilizer. The emulsion is highly stable and a less possible contaminant of underground water. |
申请公布号 |
AU2808195(A) |
申请公布日期 |
1996.02.09 |
申请号 |
AU19950028081 |
申请日期 |
1995.07.03 |
申请人 |
DU PONT - MITSUI FULUOROCHEMICALS CO., LTD.;NIPPON HODO CO., LTD.;MURAKASHI LIME INDUSTRY CO., LTD. |
发明人 |
MASATSUNE OGURA;SHIZUO CHIBA;TERUO URANO;HIROSHI MIYAJI;TETSUYA SHIMODA;TOMOHIRO GOCHO |
分类号 |
C04B28/02;C04B40/00;C05G3/00;C05G3/04;C08L27/18;C09K3/22 |
主分类号 |
C04B28/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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