Etherified methylol polyamide crosslinking agent, process for producing the same and resins crosslinked therewith
AssigneeCook Paint and Varnish Company
InventorsHoward J. Wright, Joseph H. Scherrer
Life of this patent
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Abstract
Cross-linking agents are produced by reacting an ester of a di- or poly-carboxylic acid with a molar excess of ammonium hydroxide, thereby forming a di- or polyamide, which in turn is then methylolated and etherified with a lower alkanol. These products are cross-linkers for resins such as alkyds, oil-free polyesters, acrylic which can be either acid or hydroxy functional, phenolics, epoxies or melamines.
Claims10
A cross-linking agent comprising a reaction product produced by (1) reacting a diester of a di- or poly-carboxylic acid with a molar excess of ammonium hydroxide to form a di- or polyamide, (2) methylolating said di- or polyamide and (3) etherifying the resulting methylolated di- or polyamide with an alkanol.
A process for producing an etherified methylol polyamide comprising
- (1) reacting an ester of di- or poly-carboxylic acid with a molar excess of ammonium hydroxide at a temperature ranging from ambient to 70.degree. C. to produce a corresponding di- or polyamide of said di- or poly-carboxylic acid, and
- (2) reacting the said di- or polyamide with a methylolating agent and a methylol alkylating agent at an elevated temperature to produce said etherified methylol polyamide.
A process for producing an etherified methylol polyamide comprising reacting a di- or polyamide with a methylolating agent and a methylol alkylating agent at an elevated temperature.
Dependencies are inferred from the claim text.