发明授权
- 专利标题： Tobacco smoke filter materials, fibrous cellulose esters, and production processes
- 专利标题（中）： 烟草烟雾过滤材料，纤维素酯和生产工艺
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申请号： US813301申请日： 1997-03-10
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公开(公告)号： US5863652A公开(公告)日： 1999-01-26
- 发明人: Hiroyuki Matsumura , Syu Shimamoto , Tohru Shibata
- 申请人： Hiroyuki Matsumura , Syu Shimamoto , Tohru Shibata
- 申请人地址： JPX Osaka
- 专利权人： Daicel Chemical Industries Ltd.
- 当前专利权人： Daicel Chemical Industries Ltd.
- 当前专利权人地址： JPX Osaka
- 优先权： JPX6-282584 19941021
- 主分类号： A24D3/02
- IPC分类号： A24D3/02 ; A24D3/04 ; A24D3/10 ; C08L101/16 ; D01D5/06 ; D01D5/40 ; D01F2/28 ; D02G3/00 ; D01F2/00
摘要：
A tobacco smoke filter material comprises a fibrillated cellulose ester fiber with an average fiber diameter of 15 to 250 .mu.m and a BET specific surface area of 0.5 to 4.5 m.sup.2 /g. The fibrous cellulose ester content of the material may for example be not less than 20 weight %. The cellulose ester fiber is provided by, for example, extruding a cellulose ester solution from a nozzle into a precipitating agent for the particular cellulose ester and subjecting the extrudate to a shear force. This filter material can be used in the form of, for example, a filament, web or sheet to provide a tobacco smoke filter which assures good smoking qualities and excellent wet disintegratability.
公开/授权文献
- US4142039A Process for removing catalyst residues from polyolefins 公开/授权日：1979-02-27
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