An example of a bottlebrush polymer has a polymer backbone and a plurality of individual brush moieties bonded to the polymer backbone. The individual brush moieties include a ketone, a hydrophilic segment, and a surface adhesive terminal group. The brush moieties can be functionalized and/or cross-linked.

An example of a bottlebrush polymer has a polymer backbone and a plurality of individual brush moieties bonded to the polymer backbone. The individual brush moieties include a ketone, a hydrophilic segment, and a surface adhesive terminal group. The brush moieties can be functionalized and/or cross-linked.

An example of a bottlebrush polymer has a polymer backbone and a plurality of individual brush moieties bonded to the polymer backbone. The individual brush moieties respectively including a ketone, a hydrophilic segment, and a surface adhesive terminal group. The brush moieties can be functionalized and/or cross-linked.

An example of a bottlebrush polymer has a polymer backbone and a plurality of individual brush moieties bonded to the polymer backbone. The individual brush moieties respectively including a ketone, a hydrophilic segment, and a surface adhesive terminal group. The brush moieties can be functionalized and/or cross-linked.

An example of a bottlebrush polymer has a polymer backbone and a plurality of individual brush moieties bonded to the polymer backbone. The individual brush moieties include a ketone, a hydrophilic segment, and a surface adhesive terminal group. The brush moieties can be functionalized and/or cross-linked.

An example of a bottlebrush polymer has a polymer backbone and a plurality of individual brush moieties bonded to the polymer backbone. The individual brush moieties include a ketone, a hydrophilic segment, and a surface adhesive terminal group. The brush moieties can be functionalized and/or cross-linked.

Provided is an (A)-(B)-(A) triblock copolymer comprising two hydrophilic polymer blocks (A) as further defined herein, and a polymer block (B), said polymer block (B) comprising at least one type of repeating unit of the following formula (I) wherein R.sup.1 is an aliphatic hydrocarbon group which is optionally substituted with one or more of OR.sup.5, SR.sup.5, NR.sup.6R.sup.7, (NR.sup.6R.sup.7R.sup.8)+, CONR.sup.6R.sup.7, C(O)OR.sup.9 and C(O)R.sup.10, wherein R.sup.5 to R.sup.10 are independently selected from H, aliphatic and aromatic residues, and wherein R.sup.1 is selected such that the polymer block (B) is more hydrophobic than the polymer block (A); and compositions, such as pharmaceutical compositions, formed with the block copolymer. ##STR00001##

Provided is an (A)-(B)-(A) triblock copolymer comprising two hydrophilic polymer blocks (A) as further defined herein, and a polymer block (B), said polymer block (B) comprising at least one type of repeating unit of the following formula (I) wherein R.sup.1 is an aliphatic hydrocarbon group which is optionally substituted with one or more of OR.sup.5, SR.sup.5, NR.sup.6R.sup.7, (NR.sup.6R.sup.7R.sup.8)+, CONR.sup.6R.sup.7, C(O)OR.sup.9 and C(O)R.sup.10, wherein R.sup.5 to R.sup.10 are independently selected from H, aliphatic and aromatic residues, and wherein R.sup.1 is selected such that the polymer block (B) is more hydrophobic than the polymer block (A); and compositions, such as pharmaceutical compositions, formed with the block copolymer. ##STR00001##

Provided are: a graft copolymer which can be safely and stably produced with simple operation, while maintaining the characteristics of an amine, and which is lower in the introduction cost than conventional graft copolymers; and a method for producing the graft copolymer. A polyamine graft polymer that is obtained by polymerizing a polyamine derivative, which is obtained by reacting a polymer compound (a) having at least one amino group with a compound (b) having at least one epoxy group, with an ethylenically unsaturated monomer (c). A method for producing a polyamine graft polymer, which comprises a step for adding, for polymerization, an ethylenically unsaturated monomer (c) and a radical polymerization initiator to a polyamine derivative, which is obtained by reacting a polymer compound (a) having at least one amino group with a compound (b) having at least one epoxy group, in a polar solvent.

Provided are: a graft copolymer which can be safely and stably produced with simple operation, while maintaining the characteristics of an amine, and which is lower in the introduction cost than conventional graft copolymers; and a method for producing the graft copolymer. A polyamine graft polymer that is obtained by polymerizing a polyamine derivative, which is obtained by reacting a polymer compound (a) having at least one amino group with a compound (b) having at least one epoxy group, with an ethylenically unsaturated monomer (c). A method for producing a polyamine graft polymer, which comprises a step for adding, for polymerization, an ethylenically unsaturated monomer (c) and a radical polymerization initiator to a polyamine derivative, which is obtained by reacting a polymer compound (a) having at least one amino group with a compound (b) having at least one epoxy group, in a polar solvent.