	US 11,912,888 B2
	Fluoropolyether group-containing compound
Tsuneo Yamashita, Osaka (JP); Hisashi Mitsuhashi, Osaka (JP); Kenichi Katsukawa, Osaka (JP); Takeshi Maehira, Osaka (JP); and Yoshimi Motonari, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Sep. 20, 2021, as Appl. No. 17/448,133.
Application 17/448,133 is a continuation of application No. PCT/JP2020/013771, filed on Mar. 26, 2020.
Claims priority of application No. 2019-066333 (JP), filed on Mar. 29, 2019.
Prior Publication US 2022/0002587 A1, Jan. 6, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C09D 171/02 (2006.01); C08G 65/00 (2006.01); C08G 65/336 (2006.01); C08G 77/46 (2006.01); C09D 5/00 (2006.01); C09D 183/12 (2006.01); C09D 171/00 (2006.01)

CPC C09D 171/02 (2013.01) [C08G 65/007 (2013.01); C08G 65/336 (2013.01); C08G 77/46 (2013.01); C09D 5/00 (2013.01); C09D 171/00 (2013.01); C09D 183/12 (2013.01)]

7 Claims

1. A surface-treating agent comprising a fluoropolyether group-containing compound represented by formula (1) and a fluoropolyether group-containing compound represented by formula (2) below:

wherein

R^F1is R^f1—R^F—O_q—;

R^F2is —R^f2_p—R^F—O_q—;

R^f1is a C_1-16alkyl group optionally substituted with one or more fluorine atoms;

R^f2is a C_1-6alkylene group optionally substituted with one or more fluorine atoms;

R^Fis each independently at each occurrence a group represented by formula:

—(OC₆F₁₂)_a—(OC₅F₁₀)_b—(OC₄F₈)_c—(OC₃R^Fa₆)_d—(OC₂F₄)_e—(OCF₂)_f—

a, b, c, and d are each independently an integer of 0 or more and 30 or less, e and f are each independently an integer of 1 or more and 200 or less, the sum of a, b, c, d, e, and f is at least 5, the occurrence order of each repeating unit enclosed in parentheses provided with a subscript a, b, c, d, e, or f is not limited in the formula, and the ratio of e to f is less than 0.9;

R^Fais each independently at each occurrence a hydrogen atom, a fluorine atom, or a chlorine atom;

p is 0 or 1;

q is independently 0 or 1;

R^Siis each independently at each occurrence represented by formula (S1) below:

—X¹—SiR^a1_p1R^b1_q1R^c1_r1 (S1)

X¹is each independently at each occurrence a single bond, an oxygen atom, or a divalent organic group;

R^a1is each independently at each occurrence —Z^1′—SiR^a1′_p1′R^b1′_q1′R^d1′_r1′;

Z^1′ is each independently at each occurrence a single bond, an oxygen atom, or a divalent organic group;

R^a1′is each independently at each occurrence —Z^1″—SiR^a1″_p1″R^b1″_q1″R^c1″_r1″;

Z^1″is each independently at each occurrence a single bond, an oxygen atom, or a divalent organic group;

R^a1″is each independently at each occurrence —Z^1′″—SiR^b1′″_q1′″R^c1′″_r1′″;

Z^1′″ is each independently at each occurrence a single bond, an oxygen atom, or a divalent organic group;

R^b41′″ is each independently at each occurrence a hydroxyl group or a hydrolyzable group;

R^c1′″ is each independently at each occurrence a hydrogen atom or a monovalent organic group;

q1′″ is each independently at each occurrence an integer of 0 to 3;

r1′″ is each independently at each occurrence an integer of 0 to 3;

R^b1″ is each independently at each occurrence a hydroxyl group or a hydrolyzable group;

R^c1″ is each independently at each occurrence a hydrogen atom or a monovalent organic group;

p1″ is each independently at each occurrence an integer of 0 to 3;

q1″ is each independently at each occurrence an integer of 0 to 3;

r1″ is each independently at each occurrence an integer of 0 to 3;

R^b1′ is each independently at each occurrence a hydroxyl group or a hydrolyzable group;

R^c1′ is each independently at each occurrence a hydrogen atom or a monovalent organic group;

p1′ is each independently at each occurrence an integer of 0 to 3;

q1′ is each independently at each occurrence an integer of 0 to 3;

r1′ is each independently at each occurrence an integer of 0 to 3;

R^b1is each independently at each occurrence a hydroxyl group or a hydrolyzable group;

R^c1is each independently at each occurrence a hydrogen atom or a monovalent organic group;

p1 is each independently at each occurrence an integer of 0 to 3;

q1 is each independently at each occurrence an integer of 0 to 3; and

r1 is each independently at each occurrence an integer of 0 to 3;

provided that at least one R^b1, R^b1′, R^b1″, or R^b1′″ is present for each group represented by R^Si.