Curing by actinic radiation

• US 3,899,611 A
• Filed: 10/19/1973
• Issued: 08/12/1975
• Est. Priority Date: 05/22/1972
• Status: Expired due to Term

• Current Assignee: The Glidden Company (Nouryon BV)
• Original Assignee: Roger P. Hall
• Inventors: Hall, Roger P.
• Primary Examiner(s): Turer, Richard B.
• Application Number:
  US05/408,244
• Time in Patent Office: 662 Days
• Field of Search: 260/856,837 240/159.15,159.10,159.17,159.23
• US Class Current: 427/488
• CPC Class Codes: C08F 220/36 containing oxygen in addition to the carboxy oxygen , e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate
• CPC Class Codes: C08F 283/00 Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
• CPC Class Codes: C08F 290/06 Polymers provided for in subclass C08G
• CPC Class Codes: C08F 290/14 Polymers provided for in subclass C08G
• CPC Class Codes: C08F 299/06 from polyurethanes
• CPC Class Codes: C09D 4/06 Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
• CPC Class Codes: Y10T 428/31652 Of asbestos
• CPC Class Codes: Y10T 428/31862 Melamine-aldehyde
• CPC Class Codes: Y10T 428/31942 Of aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31957 Wood

Abstract

Methods are disclosed for rapidly curing compositions containing acrylyl terminated prepolymers and unsaturated diluents with melamine acrylate cross-linking agents by exposure to actinic radiation. The compositions also contain a polymerization initiator which is sensitive to the radiation employed.

Claims

1. A COATING COMPOSITION POLYMERIZABLE BY ACTINIC RADIATION WHICH COMPRISES IN PARTS BY WEIGHT THE FOLLOWING COMPONENTS:

A. ABOUT 10 TO 70 PARTS OF AN ACRYLYL TERMINATED PREPOLYMER HAVING A MOLECULAR WEIGHT FROM ABOUT 170 TO ABOUT 30,000, B. ABOUT 5 TO 75 PARTS OF AN ALKYL ACRYLATE MELAMINE ETHER CONTAINING AN AVERAGE OF MORE THAN 3 ACRYLATE OR LOWER ALKACRYLATE GROUPS PER TRIAZINE RING AND MISCIBLE WITH THE ACRYLYL TERMINATED PREPOLYMER, C. ABOUT 0 TO 75 PARTS OF A MONOETHYLENCALLY-UNSATURATED VISCOSITY-REDUCING DILUTENT MISCIBLE WITH, AND COPOLYMERIZABLE UNDER ACTINIC IRRADIATION WITH, THE PREPOLYMER AND THE MELAMINE ETHER, AND D. AN ACTINIC RADIATION-SENSITIVE POLYMERIZATION INITIATOR IN AN PROPORTION EFFECTIVE FOR INITIATING POLYMERIZATON OF SAID COMPONENTS (A), (B) AND (C) UPON EXPOSURE OF SAID COMPOSITION TO ACTINIC RADIATION, SAID PROPORTION BEING FROM ABOUT 0.01 TO 5 PARTS, WHEREIN SAID PARTS OF SAID COMPONENTS (A), (B), (C) AND (D) TOTAL 100.

2. The composition of claim 1 wherein said alkyl acrylate melamine ether is predominately in the form of oligimers.

3. A process for coating an article comprising applying to the surface of the article a film of the composition of claim 1 and then exposing said film to actinic radiation to polymerize said film to a hard, adherent coating.

4. A product of the process of claim 3.