A laundry detergent or cleaning composition which comprises a copolymer containing sulfonate groups containing from 1 to 50 mass percent of structural units derived from 1 or more kinds of monomers selected from {HEAD ~ ether bond} containing monomers represented by Formulas and , 50 mass % or more and less than 98 {TAIL ~ mass %} of structural units derived from a carboxyl group containing monomer , and 1 mass % or more and less than 50 mass % of structural units de rived from a sulfonate group containing monomer  
A laundry detergent or cleaning composition which comprises a copolymer containing sulfonate groups containing from 1 to 50 mass percent of structural units derived from 1 or more kinds of monomers selected from { HEAD ~ ether bond } containing monomers represented by Formulas and , 50 mass % or more and less than 98 { TAIL ~ mass % } of structural units derived from a carboxyl group containing monomer , and 1 mass % or more and less than 50 mass % of structural units de rived from a sulfonate group containing monomer
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