Radiation-curable cellulose coating
AssigneeMinnesota Mining and Manufacturing Company
InventorRichard J. Grant
Life of this patent
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Abstract
Ethylenically unsaturated cellulose esters are provided. These ethylenically unsaturated cellulose esters are the reaction product of a cellulose ester having unreacted hydroxyl groups and a polymerizable ethylenically unsaturated compound having an isocyanato group reactive with the hydroxyl groups of the cellulose ester. The product is substantially free of unreacted isocyanate groups and is particularly useful in protective coatings.
Claims18
Ethylenically unsaturated cellulose ester comprising the reaction product of (a) a cellulose ester of cellulose and saturated aliphatic monocarboxylic acids having 2 to 4 carbon atoms or aromatic monocarboxylic acids, said cellulose ester having an average of about 0.1 to 2.0 unreacted hydroxyl groups per anhydroglucose unit, and (b) a polymerizable ethylenically unsaturated compound having an isocyanato group reactive with the hydroxyl groups of the cellulose ester, said reaction product being substantially free of unreacted isocyanate groups.
Ethylenically unsaturated cellulose ester comprising the reaction product of (a) a cellulose ester selected from cellulose acetate, cellulose acetate propionate and cellulose acetate butyrate and (b) a polymerizable ethylenically unsaturated compound selected from isocyanatoethyl acrylate and isocyanatoethyl methacrylate said reaction product being substantially free of unreacted isocyanate groups.
Dependencies are inferred from the claim text.