03957651 is referenced by 34 patents and cites 7 patents.

Microporous membrane filters composed of polyesters derived from aromatic dibasic acids and especially polytetramethylene terephthalate are produced. These membranes are produced by a polymer assisted phase inversion process involving casting a solution of the polyester and assisting polymer to form a film, evaporating the solvent to form a membrane having inchoate micropores filled with the assisting polymer and subsequently at least partially leaching out the assiting polymer.

Title
Microporous polyester membranes and polymer assisted phase inversion process for their manufacture
Application Number
347156
Publication Number
3957651
Application Date
April 30, 1975
Publication Date
May 18, 1976
Inventor
Robert E Kesting
Irvine
CA, US
Agent
Knobbe Martens Olson Hubbard & Bear
Assignee
Chemical Systems Incorporated
CA, US
IPC
B29D 27/04
B01D 39/04
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