Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1994-10-05
1996-05-07
Lesmes, George F.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
428131, 428134, 428212, 428220, 4283044, 4283142, 4283155, 428421, 21050042, 21050023, 521145, B01D 1300
Patent
active
055144616
ABSTRACT:
A polyvinylidene fluoride porous membrane has an asymmetrical structure, excellent mechanical strength such as tensile strength at break and elongation at break, and a desirable narrow range of pore diameter distribution. A method of preparing the porous membrane is also disclosed. The membrane comprises a vinylidene fluoride resin having an inherent viscosity from 1.3 to 15.0 (dl/g), and the membrane comprises pores which satisfy the following numerical expression (A):
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patent: 5387378 (1995-02-01), Pintauro et al.
Meguro Kazuhiro
Mizuno Toshiya
Sato Hiroshi
Teramoto Yoshikiti
Choi Kathleen L.
Kureha Chemical Industry Co. Ltd.
Lesmes George F.
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