Films Made Of Plasticizer-Containing Polyvinyl (Iso)Acetal
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United States of America Patent
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Issued Date -
Jan 24, 2013
app pub date -
Jul 19, 2012
filing date -
Jul 22, 2011
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Abstract
A film contains a mixture of at least one non-aromatic plasticizer having a polarity, expressed by the formula 100×O/(C+H), of less than/equal to 9.4 wherein O, C and H represent the number of oxygen, carbon and hydrogen atoms in the respective molecule, and a polyvinyl (iso)acetal having a proportion of polyvinyl (iso)acetal groups of 60 to 85% by weight and a proportion of polyvinyl alcohol groups of 14 to 40% by weight. The films may be used in the automotive industry, in windscreens, in the field of architecture, in façade components, or for the production of photovoltaic modules.
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