Polyanhydride-monoepoxide compositions containing a monoanhydride
Abstract
Abstract LIQUID COATING AND MODING COMPOSITIONS ARE PROVIDED WHICH ARE CURABLE TO AN INFUSIBLE RESIN ARTICLE OR COATING. THE COMPOSITION COMPRISES A SOLUTION OF A SATURATED OR UNSATURATED MONOOXIRANE COMPOUND, FOR EXAMPLE EPICHLOROHYDRIN, A MONOANHYDRIDE OF A DICARBOXYLIC ACID CONTAINING AT LEAST 5 CARBON ATOMS, SUCH AS PHTHALIC ANHYDRIDE AND A SOLID POLYANHYDRIDE HAVING SUCCINIC ANHYDRIDE GROUPS (EXCLUDING AROMATIC ANHYDRIDES IN WHICH THE A -CARBON ATOMS OF THE ANHYDRIDE GROUP ARE INCLUDED IN THE AROMATIC RING) FOR EXAMPLE THE COPOLYMER OF A STRAIGHT CHAIN A -MONOOLEFIN AND A MALEIC ANHYDRIDE. PREFERABLY A TERTIARY AMINE, SUCH AS 3-PICOLINE, IS INCLUDED AS A CURE ACCELERATOR. THE COMPOSITION SHOWS LITTLE OR NO SHRINKAGE AND WEIGHT LOSS DURING DURING, IN CONTRAST TO THE SAME COMPOSITION MINUS THE MONO-ANHYDRIDE. THUS FOR EXAMPLE, FILMS AND COATINGS FREE OF LIFTING AND ETCHING ARE OBTAINED.
Inventors
- 👤 Stanley M Hazen
- 👤 William J Heilman
Bibliographic Details
Claims Analysis
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