Detergent composition comprising a polymer

A detergent composition comprising a detersive surfactant and a water soluble polymer, wherein the water soluble polymer comprises:

• (a) one or more of structure unit (I),
• (b) one or more of structure unit (II),
• (c) one or more of a structure unit selected from (III-a), (III-b), (III-c), or a combination thereof, wherein the structure units are:
• wherein:
• R1 is H or SO3M, in which M is a counter ion;
• R2 is one or more linear or branched alkylene group represented by formula (CmH2m), with m being a number from about 2 to about 10;
• R3 and R4 are independently selected from a linear or branched alkylene group represented by formula (CnH2n), with n being about 2, about 3 or about 4;
• R5 is selected from the group consisting of —(CjH2jO)k—R98,
• wherein k is, based on molar average, a number selected from about 0 to about 10,
• j is about 2, about 3 or about 4,
• R98 is selected from alkyl, alkenyl, hydroxyalkyl, hydroxyalkenyl, alkyl phenyl, alkenyl phenyl, phenyl alkyl and phenyl alkenyl, wherein the alkyl and alkenyl groups comprise at least about 6 carbon atoms,
• R6 is selected from the group consisting of —(CjH2jO)k—R99,
• wherein k is, based on molar average, a number selected from about 0 to about 10,
• j is about 2, about 3 or about 4,
• R99 is selected from hydrogen, alkyl, alkenyl, hydroxyalkyl, hydroxyalkenyl, alkyl phenyl, alkenyl phenyl, phenyl alkyl and phenyl alkenyl,
• a and b are from about 1 to about 200, based on molar average and independently selected from one another.