Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ
Patent
1984-10-19
1986-05-20
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
264 49, 264129, 26433119, 4284231, 4284782, 521 65, 521 841, C08J 928, C08J 926, C08J 942, B29C 3920
Patent
active
045900221
ABSTRACT:
A moisture vapor permeable sheet material is comprised of a homogeneous admixture of a synthetic polymer material and a protein derivative. The sheet material is moisture vapor permeable and non-penetrable by liquid water. The sheet material additionally can have coated thereon a pressure sensitive adhesive which is comprised of a synthetic organic polymer adhesive and a soluble protein derivative in solid solution. Sheet material is formed by providing a homogeneous fluid solution of a soluble protein derivative and a synthetic organic polymer in a solvent. The protein derivative has a pH level compatible with the pH level of the organic polymer. Film is formed from the homogeneous fluid solution and the solvent is removed from the film to form the sheet material which is moisture vapor permeable. When the sheet material includes an adhesive, the adhesive is coated as a fluid solution in a solvent on one side of the sheet material.
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Barth Peter
Brabson Joseph B.
Cioca Gheorge
Feeley George F.
Anderson Philip
Seton Company
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