Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1993-04-01
1995-02-14
Lesmes, George F.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
204295, 204296, 4283157, 4283166, 429129, 429131, 429142, 429145, 429251, 429254, B32B 326, B32B 518, B01D 3914
Patent
active
053894332
ABSTRACT:
A battery separator composed of a microporous sheet product having first and second major surfaces and a thickness of less than about 50 mils, formed from a uniform mixture of a polysulfone polymer and a filler or polysulfone polymer and structure enhancing agent, said sheet product having a fibrous sheet embedded within said mixture and between the first and second major surfaces. The porosity of the sheet product is at least about 60 volume percent composed of pores such that the average pore diameter increases from each major surface toward the interior of the sheet product's thickness.
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Avtges James A.
Chang Victor S. C.
Hartwig Richard C.
Kung James K.
Laccetti Anthony J.
Copenheaver Blaine R.
Lesmes George F.
Troffkin Howard J.
W. R. Grace & Co.,-Conn.
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