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Container for packaging and process for making substancialmetne impermeavel transmission umidos anhydrous solvent or fuel vapors and gases in a container, for packaging.
Container for packaging and process for making substancialmetne impermeavel transmission umidos anhydrous solvent or fuel vapors and gases in a container, for packaging.
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机译:用于包装的容器和用于在容器中使大量的无水传输的无水无水溶剂或燃料蒸气和气体产生的方法。
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摘要
The present invention relates to an enclosure member consisting essentially of solid, non-aromatic polymers that have a linear carbon to carbon backbone structure and have a plurality of free hydrogen atoms attached to the carbon atoms with a permeability to wet and dry solvents and fuels of less than 1/50, of the permeability of untreated enclosure members having a thickness of 1 mm, a portion of the hydrogen atoms of the surfaces of said member having been replaced by sulphonic acid or sulphonate groups and being coated with a cured thin layer of a mixture of a resin made by the reaction of urea and formaldehyde, respectively of melamine and formaldehyde, with furfuryl alcohol, and an oligomer consisting of a polymer of furfuryl alcohol and formaldehyde.
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