A process for manufacturing a breathable chemically resistant polymer material

• Main Authors: BEADLE, BRIAN ALAN, GARRETT, GRAHAM SAMUEL, CLARKE, ALAN HUGH
• Format: Patent
• Language: English
• Published: 30.04.2009
• Edition: 7
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

Disclosed is a process for providing a breathable chemically resistant polymer material form comprising the step of: blending by extrusion: at least 50% by weight of one or more hydrophilic polymers being selected from the group comprising: Poly Vinyl Alcohols, Ethylene Vinyl Alcohols, Poly Hydroxyethyl Methacrylates, Poly Ethylene Oxides, Poly Ether block Amides, Breathable Thermoplastic Elastomers, and Polyurethanes; as a first component, and between 5 and 50% by weight of one or more neutralising chemicals (such as polyethyleneimine) as a second component, in the complete or substantial absence of water. In the absence of water, the components will not be aqueous solutions, thus the components can be used in blending processes, and it is able to form many other shapes and forms of material other than laminates on substrates.