process for coating a substrate with a radiation and moisture curable coating composition

Patent · Tue Nov 06 04:00:00 EST 1979

OSTI ID:5477733

Noomen, A; van der Geest, J M.P.; de Jong, C; Santen, D V

A process is disclosed for coating a substrate with a radiation curble coating composition, characterized in that the composition comprises (A) an at least one isocyanate group-containing adduct of (a) an acrylic or methacrylic hydroxy ester with 5 to 20 carbon atoms and (b) a polyisocyanate with 4 to 40 carbon atoms and with 2 to 4 isocyanate groups per molecule, (B) a polyfunctional hydroxy compound having a molecular weight of 178 to 12,000 and a hydroxyl content of 0.5 to 30% by weight in an amount of 0.5 to 1.5 equivalents of hydroxy per equivalent of isocyanate of component A, and (C) a photoinitiator in an amount of 0.1 to 10% by weight of component A. The curing takes place in a first stage by radiation having a wavelength of 90 to 600 nm and in a second stage by reaction of the isocyanate groups of component A with water vapor and the hydroxyl groups of the polyfunctional hydroxy compound.

• Assignee: Akzo N.V.
• Patent Number(s): US 4173682
• OSTI ID: 5477733
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400600* -- Radiation Chemistry
ACRYLIC ACID ESTERS
ADDUCTS
CARBOXYLIC ACID ESTERS
CHEMICAL RADIATION EFFECTS
CHEMISTRY
CURING
DEPOSITION
ESTERS
HYDROXY COMPOUNDS
IONIZING RADIATIONS
ISOCYANATES
METHACRYLIC ACID ESTERS
MOISTURE
ORGANIC COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
SUBSTRATES
SURFACE COATING