Method of manufacturing anti-soiling carpet, and anti-soiling carpet

A method of manufacturing an anti-soiling carpet comprising:

• a step of treating a carpet with a liquid solution comprising an anti-soiling agent;
• the anti-soiling agent containing a non-fluorinated polymer (α) and a non-fluorinated polymer (β);
• the non-fluorinated polymer (α) containing a constituent unit derived from a monomer (A1) represented by formula (A-1) and a constituent unit derived from at least one monomer selected from the group consisting of a monomer (A2) represented by formula (A-2) and a monomer (A3) represented by formula (A-3), with a mixing ratio of the monomer (A1) of 60 mass % or more relative to the total amount of the monomer components constituting the non-fluorinated polymer (α);
• the non-fluorinated polymer (β) containing a constituent unit derived from at least one monomer (A4) of methyl methacrylate and ethyl methacrylate and a constituent unit derived from a monomer (A5) represented by formula (A-5), with a mixing ratio of the monomer (A4) of 60 mass % or more relative to the total amount of the monomer components constituting the non-fluorinated polymer (β):
• wherein R represents a hydrogen atom or a methyl group, and R2 represents a monovalent hydrocarbon group having 12 to 30 carbon atoms, optionally having a substituent;
• wherein R3 represents a hydrogen atom or a methyl group, and R4 represents a monovalent cyclic hydrocarbon group having 4 to 11 carbon atoms, optionally having a substituent, or a monovalent unsubstituted chain hydrocarbon group having 1 to 4 carbon atoms;
• wherein R5 represents a hydrogen atom or a methyl group, X represents a hydroxyl group or a methoxy group, Y represents a linear or branched alkylene group having 2 to 4 carbon atoms, optionally having a hydroxyl group, Z represents a ketone group or a linear or branched alkylene group having 1 to 6 carbon atoms, n is an integer of 1 to 80, and in the case of n being 2 or more, the plurality of Y's may be the same or different from each other;
• wherein R6 represents a hydrogen atom or a methyl group, and R7 represents a monovalent hydrocarbon group having 4 to 30 carbon atoms, optionally having a substituent.