Patent ID: 8349944

Claim:
A polymer dispersion comprising a polymer in an organic medium, which comprises the product from the polymerization of at least one vinyl monomer in the presence of a radical initiator in a reactive organic dispersing medium, wherein the vinyl monomer is selected from the group consisting of the monomers of formula in which (1) X is a C 1 -C 18 alkyl radical, an aryl radical which can comprise one or more C 1 -C 4 alkyl substituents, or a C 7 -C 10 arylalkyl radical, and Y represents a hydrogen atom or a C 1 -C 4 alkyl radical, or (2) X is an OR group in which R represents a C 1 -C 18 alkyl radical or a C 5 -C 8 cycloalkyl radical, or a radical of formula in which R 1 and R 2 represent a hydrogen atom, a methyl radical or an ethyl radical, R 1 and R 2 being different, m and n, which are identical or different, are equal to 1, 2, 3 or 4, z and t, which are identical or different, are greater than 4, z +t is less than or equal to 80, and Y represents a hydrogen atom or a C 1 -C 4 alkyl radical, or (3) X is an OCOR 1 group in which R 1 represents a C 1 -C 12 alkyl radical, a C 5 -C 8 cycloalkyl radical, or an aryl radical, and Y represents a hydrogen atom, or (4) X is a COOR 2 group in which R 2 represents a C 4 -C 20 alkyl radical, a C 6 -C 20 cycloalkyl radical, an aryl radical, or a C 6 -C 20 arylalkyl radical, and Y represents a hydrogen atom or a methyl radical, or (5) X is a group of formula and Y represents a hydrogen atom; and wherein the reactive organic dispersing medium comprises a silicone comprising at least one epoxy group in terminal position(s).