process for coating a substrate with a radiation and moisture curable coating composition
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
- Resource Relation:
- Patent Priority Date: Priority date 9 Mar 1977, Netherlands
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ACRYLIC ACID ESTERS
CHEMICAL RADIATION EFFECTS
HYDROXY COMPOUNDS
ISOCYANATES
METHACRYLIC ACID ESTERS
SURFACE COATING
ADDUCTS
CURING
IONIZING RADIATIONS
MOISTURE
SUBSTRATES
CARBOXYLIC ACID ESTERS
CHEMISTRY
DEPOSITION
ESTERS
ORGANIC COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
400600* - Radiation Chemistry
400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)