Patent ID: 11970651
Assignee: DAIKIN INDUSTRIES, LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  D | IPC C

Claim 18:
19. A method for producing the surface treatment agent according to claim 1, the method comprising:
(i) preparing an aqueous dispersion of a water- and oil-repellent polymer (A) by polymerizing in the presence of a liquid medium a monomer containing at least one water- and oil-repellent monomer selected from
(A1) a fluorine-containing monomer and
(A2) a fluorine-free monomer having a hydrocarbon group having 7 to 40 carbon atoms, the water- and oil-repellent polymer (A) having a repeating unit derived from the water- and oil-repellent monomer in an amount of 30 to 100 wt % based on the amount of the water- and oil-repellent polymer; and
(ii) adding a silicone polymer (B) to the aqueous dispersion of the water- and oil-repellent polymer.