Process for the production of radiation curable coating compositions containing microcapsules

Patent · Tue Jul 17 04:00:00 EDT 1979

OSTI ID:5946722

Lee, Y; Shackle, D R

A process for producing a radiation curable coating composition containing microcapsules comprises the steps of preparing a dispersion of substantially discrete microcapsules in a continuous phase, the continuous phase comprising a liquid volatile solvent, preparing a liquid radiation curable suspending medium, the liquid radiation curable suspending medium comprising one or more ethylenically unsaturated organic compounds having at least one terminal ethylenic group per molecule, mixing the dispersion of substantially discrete microcapsules in the continuous phase and the liquid radiation curable suspending medium with turbulent agitation to form an intimate mixture of the dispersion of microcapsules and the liquid radiation curable suspending medium, and applying heat and vacuum to the mixture, while maintaining the agitation, until the liquid volatile solvent is substantially removed from the mixture to form a dispersion of substantially discrete microcapsules in the liquid radiation curable suspending medium. The heat is applied to maintain the mixture at a temperature above the boiling point of the volatile solvent at the vacuum level.

• Assignee: Mead Corp.
• Patent Number(s): US 4161570
• OSTI ID: 5946722
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
CHEMICAL RADIATION EFFECTS
CHEMISTRY
COATINGS
CURING
DEPOSITION
PAPER
RADIATION CHEMISTRY
RADIATION EFFECTS
SURFACE COATING