A solution including an antimicrobial polymer having the structure of Formula(I) in which R1 is aC2-C7 alkyl； R2 is a C8-C15 alkyl； R5a is a or OH and R5b is OR6, or R5b is aor OH and R5a is OR6,R3, R4 and R6 are each independently a C1-C4 alkyl； Hal- is a halide anionselected from the groupconsisting of bromide (Br-), chloride (CI-) and iodide (I-)； f, i, j, k and Iare each independently aninteger from 1 to 100； g is an integer from 0 to 100； the ratio of j:1 is fromabout 1:1 to 19:1； and0.1 <； j/(g + j + I) <； 1.0； in a polar solvent； and a method of producing thesolution； are provided.The quaternary ammonium salt moieties in the polymer provides it withantimicrobial activity. Theantimicrobial coating solution may be coated onto a substrate such as atextile and cured toprovide an antimicrobial substrate in which the polymer is covalently bondedto the substrate sothat it cannot leach from the substrate.(see formula I)
