发明名称 |
TETRAFLUOROETHYLENE COPOLYMER, PROCESS FOR PRODUCING THE SAME AND PASTE EXTRUDATE |
摘要 |
Provided are a tetrafluoroethylene copolymer excellent in paste extrudability, which comprises a unit based on tetrafluoroethylene and a unit based on a monomer represented by a formula of CF2=CF-O-(CF2)nCF=CF2 (wherein n is an integer of from 1 to 6), wherein a content of the unit based on the monomer represented by the formula is from 0.1 to 0.5% by mass, wherein a particle size of a primary particle is from 0.1 to 0.5 mu m, wherein a standard specific gravity is from 2.14 to 2.25, wherein a paste extrusion pressure is from 24.5 to 73.5 MPa and wherein the copolymer remains not undergoing melt molding; a fine powder of a tetrafluoroethylene copolymer; and a production method and a paste extruded product thereof. The TFE copolymer is excellent in paste extrudability and the molded product thereof is excellent in heat resistance and transparency. <IMAGE> |
申请公布号 |
EP1568720(A1) |
申请公布日期 |
2005.08.31 |
申请号 |
EP20030775847 |
申请日期 |
2003.11.19 |
申请人 |
ASAHI GLASS COMPANY LTD. |
发明人 |
KOBAYASHI, SHIGEKI,;HIGUCHI, SHINYA;ARAI, MASATAKA;NAGAI, HIROKI |
分类号 |
C08F6/14;C08F214/26;(IPC1-7):C08F214/26 |
主分类号 |
C08F6/14 |
代理机构 |
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地址 |
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