Patent ID: 7199177
Filing Date: 2007-04-03
Classification: C08F,C08K,C08L,C09B,C09D

Abstract:
1. A process for preparing a composition comprising a) 0.1–99.9% by weight of a block copolymer of the formula: wherein: In represents a polymerization initiator fragment of a polymerization initiator capable of initiating controlled atomic radical polymerization of ethylenically unsaturated monomers in the presence of a catalyst capable of activating controlled atomic radical polymerization selected from the group consisting of C p represents one; A represents a polymer block consisting of repeating units of acrylic or methacrylic acid-C B represents a polymer block consisting of repeating units of acrylic or methacrylic acid-C x and y represent numerals greater than zero and define the number of monomer repeating units in polymer blocks A and B; X represents a polymer chain terminal group; and q represents a numeral greater than zero; and b) 0.1–99.9% by weight of dispersible inorganic or organic pigment particles, provided that thermosetting compositions are excluded, which method comprises copolymerizing by atom transfer radical polymerization fragments A and B in the presence of polymerization initiator: wherein, In, p and q are defined as above and X represents halogen and a catalytically effective amount of a catalyst capable of activating controlled atomic radical polymerization, replacing the halogen in formula (II) with a different polymer chain terminal group and adding dispersable pigment particles and optionally binder materials, fillers or other conventional additives.