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AssigneeAsahi Glass Company, Limited
InventorsTakao HIRONO, Yuuichi Oomori, Minako Shimada, Shuichiro Sugimoto
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To provide a water/oil repellent composition which is capable of imparting sufficient dynamic water repellency to the surface of an article, has high stability of the particles of the copolymer, and presents a low environmental impact, a method for its production, and a method for treating an article. A water/oil repellent composition comprising a copolymer (A) having structural units based on a monomer (a) having a C1-6 polyfluoroalkyl group, structural units based on a (meth)acrylate (b) having a C20-30 alkyl group and structural units based on a halogenated olefin (c), a surfactant (B), and a medium (C), wherein the medium (C) comprises water and a propylene glycol type solvent, and the amount of the propylene glycol type solvent is from 35 to 80 parts by mass per 100 parts by mass of the copolymer (A).
A water/oil repellent composition comprising a copolymer (A) having structural units based on the following monomer (a), structural units based on the following monomer (b) and structural units based on the following monomer (c), a surfactant (B), and a medium (C), wherein the medium (C) comprises water and a propylene glycol type solvent, and the amount of the propylene glycol type solvent is from 35 to 80 parts by mass per 100 parts by mass of the copolymer (A):
A method for producing a water/oil repellent composition, which comprises polymerizing a monomer mixture comprising the following monomer (a), the following monomer (b) and the following monomer (c) in a medium (C) in the presence of a surfactant (B) and a polymerization initiator to obtain a copolymer (A), wherein the medium (C) comprises water and a propylene glycol type solvent, and the amount of the propylene glycol type solvent is from 35 to 80 parts by mass per 100 parts by mass of the monomer mixture:
Dependencies are inferred from the claim text.