Mixtures containing polymides alkenyphenols and either epoxide group-free adducts or another polyimide
AssigneeCiba-Geigy Corporation
InventorsRolf Schmid, Werner Stauffer, Abdul-Cader Zahir
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Abstract
Storage-stable heat-curable mixtures are described which contain (A) a polyimide which contains in the molecule at least two radicals of formula I ##STR1## wherein D is a divalent radical with a C.dbd.C double bond, (B) an alkenylphenol, (C) an epoxide group-free adduct of an epoxy resin with excess alkenylphenol or (D) a polyimide which is soluble in organic solvents or a mixture of (C) and (D). These mixtures are employed for example as laminating resins or electro-resins, as adhesives or adhesive films for application at high temperatures, or for the preparation of coatings.
Claims20
A storage-stable heat-curable mixture consisting essentially of
- (A) a polyimide which contains in the molecule at least two radicals of formula I ##STR51## wherein D is a divalent radical with a C.dbd.C double bond, (B) an alkenylphenol, and at least one of
- (C) an epoxide group-free adduct of an epoxy resin with excess alkenylphenol or
- (D) a polyimide other than polyimide (A) which is soluble in organic solvents.
Dependencies are inferred from the claim text.