Patent ID: 8216598

Claim:
A composition comprising microcapsules that each enclose one or more microencapsulated materials having a solubility in water lower than 750 mg/L at 20° C., wherein a wall of each of the microcapsules is formed by means of an interfacial polymerization reaction of wall forming materials comprising: m-tetramethylxylene diisocyanate (TMXDI), one or more aromatic isocyanates, and one or more compounds of formula (I) where R 1 , R 3 , R 5 , R 7 are, independently one to each other, methylen, ethylen, n-propylen, isopropylen, n-butylen, isobutylen, sec-butylen, tert-butylen, R 2 , R 4 , R 6 , R 8 are, independently one to each other, hydrogen, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, and R 9 , R 10 are each hydrogen or hydroxymethyl; and wherein the microcapsules have a mean diameter of 0.3 to 25 μm, when measured with a conventional laser diffraction particle sizer analyzer, previous customary dilution upon water under agitation; and wherein 90% of the microcapsules have a diameter lower than 100 μm.