Vapor permeable compositions
Abstract
Abstract THE PRESENT INVENTION IS CONCERNED WITH A WATER VAPOR PERMEABLE POLYMERIC COMPOSITION COMPRISING A SUBSTANTIALLY HOMOGENEOUS BLEND OF: (A) A NORMALLY HYDROPHILIC LINEAR THERMOPLASTIC POLYMERIC MATERIAL COMPRISING FROM ABOUT 40 TO ABOUT 60 PARTS BY WEIGHT OF A HOMOPOLYMER, COPOLYMER OR GRAFT COPOLYMER OF AN UNSATURATED AMIDE OF THE FORMULA: CH2=C(-R1)-CO-N(-R2)-R3 WHEREIN R1 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND ALKYL OF UP TO 4 CARBON ATOMS, R2 AND R3 ARE ALKYL OF UP TO 5 CARBON ATOMS; AND (B) A NORMALLY HYDROPHOBIC POLYMER COMPRISING FROM ABOUT 60 TO ABOUT 40 PARTS BY WEIGHT OF A PLASTICIZED POLYMER OF VINYL CHLORIDE, THE COMBINED WEIGHTS OF SAID NORMALLY HYDROPHILIC AND HYDROPHOBIC POLYMERIC MATERIALS BEING 100 PARTS BY WEIGHT, SAID POLYMERIC COMPOSITION BEING CAPABLE OF PRODUCING CONTINUOUS FILMS AND FOAMS HAVING IMPROVED WATER VAPOR TRANSMISSION PROPERTIES.
Inventors
- 👤 J Mudde
Bibliographic Details
Claims Analysis
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