发明名称 |
CATIONICALLY CHARGED COATING ON HYDROPHOBIC POLYMER FIBERS WITH POLY(VINYL ALCOHOL) ASSIST |
摘要 |
<p>A hydrophobic polymer fiber having a cationically charged coating thereon, in which the coating includes a functionalized cationic polymer, such as an epichlorohydrin-functionalized polyamine or an epichlorohydrin-functionalized polyamino-amine, which has been crosslinked by heat. The present invention also provides a fibrous filter which includes hydrophobic polymer fibers having the foregoing cationically charged coating thereon. The present invention further provides a method of preparing a fibrous filter. The method involves providing a fibrous filter comprised of hydrophobic polymer fibers; treating the fibrous filter with an aqueous solution of a functionalized cationic polymer crosslinkable by heat under conditions sufficient to substantially coat the fibers with the functionalized cationic polymer, wherein the solution includes the functionalized cationic polymer, a poly(vinyl alcohol), a polar solvent for the poly(vinyl alcohol), and water; and treating the resulting coated fibrous filter with heat at a temperature and for a time sufficient to crosslink the functionalized cationic polymer present on the hydrophobic polymer fibers.</p> |
申请公布号 |
WO0036207(A1) |
申请公布日期 |
2000.06.22 |
申请号 |
WO1999US30092 |
申请日期 |
1999.12.16 |
申请人 |
KIMBERLY-CLARK WORLDWIDE, INC. |
发明人 |
WEI, NING;LYNG, ROBERT, JOHN;VARRIALE, MONICA, GRACIELA |
分类号 |
B01D39/16;B01D39/20;D06M15/333;D06M15/55;D06M15/59;D06M15/61;D06M23/10;(IPC1-7):D06M15/564 |
主分类号 |
B01D39/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|