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

Abstract

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.

Inventors:
;
Issue Date:
Research Org.:
California Institute of Technology
OSTI Identifier:
7045890
Patent Number(s):
5141990 A
Application Number:
PPN: US 7-477357
Assignee:
California Inst. of Tech., Pasadena, CA (United States) OAK; EDB-94-089569
DOE Contract Number:  
AC03-83SF11944
Resource Type:
Patent
Resource Relation:
Patent File Date: 25 Oct 1989
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ANTIREFLECTION COATINGS; CHEMICAL COMPOSITION; FABRICATION; ULTRAVIOLET RADIATION; ABSORPTION; AZOLES; MASKING; RADIATION CURING; CHEMICAL RADIATION EFFECTS; COATINGS; CURING; ELECTROMAGNETIC RADIATION; HETEROCYCLIC COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; RADIATION EFFECTS; RADIATIONS; SORPTION; 400500* - Photochemistry

Citation Formats

McKoy, V.B., and Gupta, A. Photocurable acrylic composition, and U. V. curing with development of U. V. absorber. United States: N. p., 1992. Web.
McKoy, V.B., & Gupta, A. Photocurable acrylic composition, and U. V. curing with development of U. V. absorber. United States.
McKoy, V.B., and Gupta, A. Tue . "Photocurable acrylic composition, and U. V. curing with development of U. V. absorber". United States.
@article{osti_7045890,
title = {Photocurable acrylic composition, and U. V. curing with development of U. V. absorber},
author = {McKoy, V.B. and Gupta, A.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {8}
}