Externally catalyzed thermosetting coating compositions comprising alkylolated amide interpolymers of high acid content in combination with low molecular weight polyhydric alcohols
Abstract
Abstract A THERMOSETTING COATING COMPOSITION ADAPTED TO DEPOSIT COATINGS WHICH CURE ON BAKING MORE COMPLETELY, MORE RAPIDLY, AND AT LOWER TEMPERATURE TO PROVIDE A PENCIL HARDNESS OF 1H OR HARDER, AND WHICH POSSES IMPROVED FLEXIBLITY, SOLVENT RESISTANCE AND IMPACT RESISTANCE, COMPRISING NON-GELLED INTERPOLYMER OF NONOETHYLENICALLY UNSATURATED MONOMERS COMPRISING FROM 3-25% BY WEIGHT OF ALKYLOATED CARBOXYLIC ACID AMIDE, MONOETHYLENIC CARBOXYLIC ACID IN AN AMOUNT TO PROVIDE IN THE INTERPOLYMER A RATIO OF CARBOXYL TO N-ALKYLOL FUNCTIONALITY OF FROM .3:1 TO 1.2:1, AND AT LEAST 30% BY WEIGHT FROM THE GROUP OF STYRENE, VINYL TOLUENE AND METHYL METHACRRYLATE, IN ADMIXTURE WITH A POLYHYDRIC ALCOHOL HAVING A MOLECULAR WEIGHT OF UP TO ABOUT 6000, IN AN AMOUNT TO PROVIDE A RATIO OF HYDROXYY TO ABOUT 6000, IN AN AMOUNT TO PROVIDE 02:1 TO .6:1, AND DISSOLVED INORGANIC METAL CATALYTIC SALT IN AN EFFECTIVE AMOUNT UP TO ABOUT 4%, BASED ON THE WEIGHT OF THE INTERPOLYMER, PREFERABLY A CHLORIDE, PERCHLORATE, BROMIDE OR NIRATE OF LITHIUM, MAGNESIUM, CALCIUM, BARIUM, ZINC OR MANGANESE.
Inventors
- 👤 K Sekmakas
Bibliographic Details
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