Photocurable acrylic composition, and U. V. curing with development of U. V. absorber

Patent · Tue Aug 25 00:00:00 EDT 1992

OSTI ID:7045890

McKoy, V B; Gupta, A

In-situ development of an ultraviolet absorber is provided by a compound such as a hydroxy-phenyl-triazole containing a group which protects the absorber during actinically activated polymerization by light at first frequency. After polymerization the protective group is removed by actinic reaction at a second frequency lower than the first frequency. The protective group is formed by replacing the hydrogen of the hydroxyl group with an acyl group containing 1 to 3 carbon atoms or an acryloxy group of the formula shown in a figure where R[sup 1] is either an alkyl containing 1 to 6 carbon atoms or --CH[double bond]CH[sub 2]. 2 figs.

• Research Organization: California Institute of Technology
• DOE Contract Number: AC03-83SF11944
• Assignee: California Inst. of Tech., Pasadena, CA (United States)
• Patent Number(s): US 5141990; A
• Application Number: PPN: US 7-477357
• OSTI ID: 7045890
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ABSORPTION
ANTIREFLECTION COATINGS
AZOLES
CHEMICAL COMPOSITION
CHEMICAL RADIATION EFFECTS
COATINGS
CURING
ELECTROMAGNETIC RADIATION
FABRICATION
HETEROCYCLIC COMPOUNDS
MASKING
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
RADIATION CURING
RADIATION EFFECTS
RADIATIONS
SORPTION
ULTRAVIOLET RADIATION