Low Solubility In Organic Solvents Research Articles

プロテクティブコーティングの研究 (第4報)

Glycine esters of cellulose derivatives, their N-substituted compounds, and p-aminobenzoates were prepared and their utility as protective coating agent was examined. Methyl-, acetyl-, and ethylhydroxyethyl-cellulose were chloroacetylated with chloroacetyl chloride and reacted with various amines to form glycine esters and their N-substituted derivatives. p-Nitrobenzoates of cellulose derivatives were prepared with p-nitrobenzoyl chloride and subsequent reduction. Glycine esters were all slightly soluble in organic solvents and artificial gastric juice, and were not suitable as coating agents. p-Aminobenzoate of methylcellulose formed semilucent coating and ethylhydroxyethylcellulose derivatives had low solubility in organic solvents, that these were not suited for the present purpose. p-Aminobenzoate of acetylcellulose was found to have good properties as the protective coating agent.