초록 ▼

The present invention provides a process for forming microcapsules having discrete capsule walls. An emulsion of an oily core material in a continuous aqueous phase containing a polymeric anionic emulsifier, a free radical addition polymerizable cationic monomer and a free-radical initiator is forme

The present invention provides a process for forming microcapsules having discrete capsule walls. An emulsion of an oily core material in a continuous aqueous phase containing a polymeric anionic emulsifier, a free radical addition polymerizable cationic monomer and a free-radical initiator is formed. Particles of the oily core material are enwrapped in a polymerizate of the cationic monomer produced by polymerization of the cationic monomer.

대표청구항 ▼

A process for forming microcapsules having discrete capsule walls comprising the steps of: forming an emulsion of an oily core material in a continuous aqueous phase, said aqueous phase containing a polymeric anionic emulsifier, a free radical addition polymerizable cationic monomer represented by t

A process for forming microcapsules having discrete capsule walls comprising the steps of: forming an emulsion of an oily core material in a continuous aqueous phase, said aqueous phase containing a polymeric anionic emulsifier, a free radical addition polymerizable cationic monomer represented by the formula [Figure] where R1 and R2 are selected from the group consisting of hydrogen and alkyl groups; R3 and R4 are selected from the groups consisting of alkyl groups, aryl groups, cycloalkyl groups, hydroxyalkyl groups and alkoxyalkyl groups having 1 to 18 carbon atoms; and x is an anion; and a free-radical initiator; and polymerizing said cationic monomer so as to enwrap particles of said oily core material in a polymerizate of said cationic monomer. Microcapsules prepared by the process comprising the steps of: forming an emulsion of an oily core material in a continuous aqueous phase said aqueous phase containing an anionic emulsifier, a free radical addition polymerizable cationic monomer represented by the formula [Figure] wherein R1 and R2 are selected from the group consisting of hydrogen and alkyl groups; R3 and R4 are selected from the groups consisting of alkyl groups, aryl groups, cycloalkyl groups, hydroxyalkyl groups and alkoxyalkyl groups having 1 to 18 carbon atom; and x is an anion; and a free-radical initiator; and polymerizing said cationic monomer so as to enwrap particles of said oily core material in a polymerizate of said cationic monomer produced by polymerization of said cationic monomer.