Patent ID: 8709598

Claim:
A microcapsule comprising a core containing a hydrophobic liquid or wax and a polymeric shell formed from: i) 1 to 20% by weight of polymerisable silane compound, wherein the silane compound is defined by formula I wherein R1 is selected from the group consisting of allyl, methallyl, acryloyloxyalkyl, methacryloyloxy bonded to an alkyl radical, acrylamidoalkyl and methacrylamidoalkyl, R2, R3 and R4 are each independently selected from C 1-5 alkoxy groups, ii) 1 to 94% by weight of hydrophobic mono functional ethylenically unsaturated monomer, iii) 5 to 98% by weight of polyfunctional ethylenically unsaturated monomer, and iv) 0 to 60% by weight of other mono functional monomer(s), wherein components (i), (ii), (iii) and (iv) total 100%, and in which the microcapsule also includes a hydrophilic polymer which is covalently bonded to the microcapsule, and wherein the hydrophilic polymer is present in an amount between 5 to 50% by weight based on the weight of the polymeric shell.