Patent ID: 9040625
Filing Date: 2015-05-26
Classification: C08F,C08K,C09D,D06M

Abstract:
1. A method for treating an article, which comprises steps 1 and 2: Step 1: a step of preparing a water/oil repellent composition comprising a copolymer (A) and an aqueous medium (B), wherein the aqueous medium (B) contains water and at least one film-forming assistant selected from a film-forming assistant (x) and a film-forming assistant (y) wherein (y) has a boiling point of at least 250° C., and Step 2: a step of treating an article with the water/oil repellent composition prepared in Step 1 wherein the copolymer (A) has structural units based on the following monomer (a), structural units based on the following monomer (b), and at least one type of structural units selected from structural units based on the following monomer (c) and structural units based on the following monomer (d), wherein  wherein Z is a C  wherein i is an integer of from 1 to 6, j is an integer of from 0 to 10, and each of X  wherein R is a hydrogen atom, a methyl group or a halogen atom, and φ is a phenylene group;  where R is a hydrogen atom, a methyl group or a halogen atom, and m is an integer of from 0 to 4; wherein the film-forming assistant (x) is a compound represented by the following formula (5): wherein r is an integer of from 0 to 3, s is 0 or 1, R each of R R and wherein the film-forming assistant (y) is a compound represented by the following formula (6): wherein t is 3 or 4, each of R