Method of preparing a polymer mixture, formed products obtained therefrom and polymer alloy
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United States of America Patent
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Jul 6, 1982
Issued Date -
N/A
app pub date -
Jun 16, 1980
filing date -
Dec 22, 1978
priority date (Note) -
Expired
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Abstract
Method for preparing a polymer alloy which is stable and homogeneous at high temperatures which comprises a component (a) one or more polymers of high molecular weight, having anhydride groups and component (b) one or more polymers of high molecular weight, having groups which have the ability to interact with hydrogen atoms to form hydrogen bonds. Initially, a solution of component (a) is prepared in an organic solvent and thereafter a solution of component (b) is added. Component (a), in the dissolved state, may be protolyzed in whole or in part, prior to or after the addition of component (b) by the action of protolyzing agents. After the solvent is removed formed products, such as granules, fibres, foils, foam, may be made from the polymer alloy.
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