Michael H. McGarry
Engineering at Seasons Dr, Wexford, PA
License number
Louisiana PE.0021994
Issued Date
Jul 23, 1985
Category
Civil Engineer
Type
Mechanical Engineer
Address
Address
202 Seasons Dr, Wexford, PA 15090
Professional information
Microporous Material Exhibiting Low Alkali Metal Content
US Patent:
5583171, Dec 10, 1996
Filed:
Mar 31, 1994
Appl. No.:
8/221203
Inventors:
Richard A. Schwarz - Akron OH
Paul L. Benenati - Wadsworth OH
Michael H. McGarry - Wexford PA
Paul L. Benenati - Wadsworth OH
Michael H. McGarry - Wexford PA
Assignee:
PPG Industries, Inc. - Pittsburgh PA
International Classification:
C08J 307
US Classification:
524261
Abstract:
Microporous material comprising water insoluble thermoplastic organic polymer and particulate amorphous precipitated silica not only exhibits low particulate emissions during handling and use, but also has a low extactable alkali metal content. Microporous material having these characteristics is especially useful in clean rooms where electronic devices such as integrated circuits are manufactured. Such microporous material may be produced by employing amorphous precipitated silica particles having low alkali metal content as all or a substantial proportion of the amorphous precipitated silica particles constituting the microporous material.