| 摘要 |
PURPOSE: To produce microcapsules excellent in solvent and heat resistances without emitting irritant ordor by using a resin obtd. by allowing a polyisocyanate to react with a specified aminoalkyl ester of a natural amino acid as a wall material. CONSTITUTION: A hydrophobic core material contg. a polyisocyanate is emulsified in an aq. phase, an aminoalkyl ester of a natural amino acid represented by the formula is added and synthetic resin coating films are formed on the surfaces of formed particles. In the formula, R1 is a natural amino acid side chain and R2 is 1-10C straight chain or branched alkylene. The natural amino acid used is glycine, alanine, valine, leucine, isoleucine, serine, threonine, asparaginic acid, glutamic acid, asparagine, glutamine, lysine, arginine, cystine, methionine, phenylalanine, tyrosine, tryptophan, histidine or proline. |
