Stabilization of electron beam curable compositions for improved exterior durability

A low dosage electron beam radiation polymerizable protective and decorative coating composition or paint with improved weatherability, coated articles bearing such a protective coating and processes for preparing such articles. The radiation polymerizable coating composition comprises an organic re...

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Bibliographic Details
Main Authors CASSATTA; JOSEPH C, GARRETT, JR.; DAVID L
Format Patent
LanguageEnglish
Published 12.07.1983
Subjects
ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
CORRECTING FLUIDS
DYES
FILLING PASTES
INKS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
POLISHES
USE OF MATERIALS THEREFOR
WOODSTAINS
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Summary:A low dosage electron beam radiation polymerizable protective and decorative coating composition or paint with improved weatherability, coated articles bearing such a protective coating and processes for preparing such articles. The radiation polymerizable coating composition comprises an organic resin/monomer mixture of: (A) between about 97 and about 3 weight percent alpha-beta olefinically unsaturated organic resin containing between about 0.5 and about 5 vinyl unsaturation units per 1000 molecular weight of said resin; and (B) between about 3 and about 97 weight percent vinyl monomers polymerizable with said resin upon exposure to radiation, characterized in that said vinyl monomers include N-vinyl-2-pyrrolidone in an amount of between about 3 and about 20 weight percent based on the total weight of (A) and (B); and (C) about 0.5 to about 5.0 parts each per 100 parts of the total of said organic resin and said monomer of: (i) benzotriazole selected from the group consisting of compounds having the formula: where R1 or R2=H or an alkyl group of C1-C25, preferably C3-C9; and (ii) hindered amine selected from the group consisting of amines having the formula: wherein R=H methyl, preferably H. The flexible coating exhibits excellent physical qualities including improved weatherability and good adhesion to a variety of substrates being particularly suitable for use on polyvinyl chloride fabric, wherein it is discoloration resistant after heat aging.
Bibliography:Application Number: US19820369946