| 摘要 |
The present invention relates to a latex composition comprising a dispersion of an amphiphilic copolymer in an aqueous medium, wherein the amphiphilic copolymer is: (i) a graft copolymer comprising a hydrophobic straight or branched chain carbon- carbon backbone having at least one hydrophilic side chain, wherein each hydrophilic side chain is independently of formula (I), wherein R1 and R2 are each independently H, -C(0)WR4 or -C(0)Q; provided that at least one of R1 and R2 is the group -C(0)Q; or R1 and R2 together form a cyclic structure together with the carbon atoms to which they are attached, of formula (II) wherein: R3 and R5 are each independently H or alkyl; W is O or NR4; Q is a group of formula -X1-Y-X2P; T is a group of formula -N-Y-X2-P; X1 is O, S or NR4; X2 is O, S, (CH2)p or NR4; p is 0 to 6; each R4 is independently H or alkyl; P is H or another backbone; and Y is a hydrophilic polymeric group; or (ii) an amphiphilic polymer of general formula (I'): B-(OR)x (I) wherein B is a straight or branched chain polymer backbone which is a copolymer of at least one ethylenically-unsaturated hydrocarbon monomer comprising at least 2 carbon atoms and maleic anhydride and each OR' is a hydrophilic side chain attached to the backbone, wherein x denotes the number of side chains and is in the range 1 to 5000.. |
