Nonaqueous dispersions of thermosetting film forming copolymers of ethenic monomers
Abstract
Abstract A SOLUTION OF A PECURSOR ADDITION COPOLYMER IS PREPARED BY REACTING AN ACTIVE ETHENIC MONOMER HAVING A FUNCTIONAL EPOXY, HYDROXY, CYANATO OR CARBOXY GROUP WITH ANOTHER ACTIVE ETHENIC MONOMER FREE OF FUNCTIONALGROUPS IN AN AROMATIC OR ALCOHOLIC SOLVENT. A MISCIBLE ALIPHATIC LIQUID IS ADDED AND A SECOND ADDITION COPOLYMER THEN IS PRODUCED BY REACTING INTHE MIXTURE A THIRD ETHENIC MONOMER HAVING ONE OF SUCH FUNCTIONAL GROUPS AND A FOUTH ETHENIC MONOMER FREE OF SUCH FUNCTIONAL GROUPS. THE ALIPHATIC LIQUID IS A NONSOLVENT FOR THE SECOND ADDITION COPOLYMER WHICH IS DISPERSED THROUGH THE LIQUID MEDIUM. A MELAMINE-FORMALDEHYDE RESIN HAVING A MINERAL SPIRITS TOLERANCE OF 250 OR GREATER IS ADDED. CURING COATINGS OF THE DISPERSION PRODUCES THERMOSETTING FILMS HAVING AN EXCELLENT COMBINTION OF PROTECTIVE AND DECORATIVE PROPERTIES.
Inventors
- 👤 D Maker
- 👤 S Peng
Bibliographic Details
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