Patent ID: 8357651

Claim:
Microcapsules comprising a core of fragrance and a shell of aminoplast polymer, the composition of the shell being from 75-100% of a thermoset resin comprising 50-90% of a terpolymer and from 10-50% of a polymeric stabilizer; the terpolymer comprising: (a) from 20-60% of moieties derived from at least one polyamine; (b) from 3-50% of moieties derived from at least one polyol; and (c) from 20-70% of substituted methylene moieties, wherein the substituted methylene moieties have the general formula (1) in which R is either a hydrogen atom or an alkyl group, and Y 1 and Y 2 are substituents selected from sigma acceptor groups, alkyne groups and metal sulphonates, the microcapsules additionally optionally comprising up to 25% of a cationic polymer.