Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1991-10-18
1993-11-09
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C08K 535
Patent
active
052603601
ABSTRACT:
The invention discloses an oleophobic, hydrophobic, water repellent, moisture vapor and air permeable, heat sealable, microporous membrane material suitable for garment applications. The membrane material comprises a polyolefin polymer, a processing compound which is miscible with the polymer at its melt temperature but phase separates when the polymer is cooled to or below its melt temperature, and a fluorochemical composition. The membrane material is oriented in at least one direction. The membrane materials retain their repellency and moisture vapor permeable properties for extended periods of time in garment applications which expose the membrane materials to perspiration residues which are known to generally contaminate and ultimately destroy the repellency properties of conventional liquid repellent, moisture vapor permeable treatments.
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Mrozinski James S.
Seppala Harold J.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Mulcahy Peter D.
Schofer Joseph L.
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