<p>The present invention relates to the field synthetic polymeric membrane materials formed from casting polyvinylidene difluoride (PVDF) polymer solutions and/or dispersions. Membranes formed in accordance with the present invention are all highly porous. Both internally isotropic membranes and highly asymmetric PVDF membranes are disclosed. Membranes of the invention may be hydrophobic or hydrophilic. The membranes of the invention are useful in a variety of microfiltration and ultrathin applications.</p>
申请公布号
WO9959707(A1)
申请公布日期
1999.11.25
申请号
WO1999US11004
申请日期
1999.05.18
申请人
USF FILTRATION AND SEPARATIONS GROUP INC.;WANG, I-FAN;DITTER, JEROME, F.;ZEPF, ROBERT