Polyether group-containing compound

A polyether group-containing compound of the formula (I):

• wherein
• one or two R— groups are represented by (Rf-Xf1-PE-Xf2)α—X1—, and one or two R— groups are represented by RSi—;
• the total number of (Rf-Xf1-PE-Xf2)α—X1— and RSi— is 3;
• α is an integer of 1 to 9;
• Rf is independently at each occurrence an alkyl group having 1 to 16 carbon atoms, optionally substituted with one or more fluorine atoms;
• PE is each independently at each occurrence a group represented by formula:
• —(OC6F12)a—(OC5F10)b—(OC4F8)c—(OC3X106)d—(OC2F4)e—(OCF2)f—
• wherein a, b, c, d, e, and f are each independently an integer of 0 or more and 200 or less, the sum of a, b, c, d, e, and f is at least 1, the occurrence order of the respective repeating units enclosed in parentheses provided with a, b, c, d, e, or f is not limited in the formula, and X10 is each independently at each occurrence a hydrogen atom, a fluorine atom, or a chlorine atom;
• Xf1 is represented by (Xf11)z;
• Xf11 is an alkylene group having 1 to 6 carbon atoms wherein a hydrogen atom is optionally replaced with a fluorine atom;
• z is each independently at each occurrence 0 or 1;
• Xf2 is represented by (O)y or (NH)y;
• y is each independently at each occurrence 0 or 1;
• X1 is each independently at each occurrence (—(R11)n16—)2N—(R12)n17—, —(R11)n16—X11—, or —R13—,
• R11 each independently at each occurrence represents —(CH2)n11—, an o-, m-, or p-phenylene group which may be substituted with one or more fluorine atoms;
• n11 is an integer of 1 to 20;
• R12 each independently at each occurrence represents —(CH2)n12—, an o-, m-, or p-phenylene group which may be substituted with one or more fluorine atoms;
• n12 is an integer of 1 to 20;
• X11 is each independently at each occurrence —O—, —(OR61)n14—, —S—, —C(═O)—, —C(═O)O—, —O—C(═O)—, —O—C(═O)—O—, —Si(R62)2—, —(Si(R62)2O)n15—Si(R62)2—, —NR3C(═O)—, —C(═O)NR3—, —NR3C(═O)NR3—, —NR3C(═O)O—, —O—C(═O)NR3—, —NR3_, —SO2NR3—, or —SO2—;
• R61 is each independently at each occurrence a C1-6 alkylene group;
• n14 is each independently at each occurrence an integer of 1 to 5;
• R62 is each independently at each occurrence a phenyl group, a C1-6 alkyl group, or a C1-6 alkoxy group;
• n15 is each independently at each occurrence an integer of 1 to 100;
• R3 is each independently at each occurrence a hydrogen atom, a phenyl group, or an alkyl group having 1 to 6 carbon atoms;
• n16 each independently at each occurrence is 0 or 1;
• n17 is 0 or 1;
• R13 is each independently at each occurrence —(CH2)n13—;
• n13 is an integer of 1 to 20;
• RSi— is each independently at each occurrence represented by any of the following formulae (A1) to (A4):
• (Ram1Rb3-m1Si)β2—Xa3— (A2)
• (Rf3p3Rf2p2Rf1p1Si)β3—Xa4— (A3)
• (Rg3q3Rg2q2Rg1q1C)β4—Xa5— (A4)
• Ra is each independently at each occurrence a hydroxyl group or a hydrolyzable group;
• Rb is each independently at each occurrence a hydrogen atom or an alkyl group having 1 to 20 carbon atoms;
• m1 is each independently at each occurrence an integer of 0 to 3;
• Xa1, Xa3, Xa4, and Xa5 are each independently at each occurrence (—(R71)n21—)2N—(R72)n22—, —(R71)n21—X3—(R72)n22—, —R73—, or —Y—O—;
• R71 is each independently at each occurrence —(CH2)n23—, an o-, m-, or p-phenylene group, which may be substituted with one or more fluorine atoms;
• n23 is each independently at each occurrence an integer of 1 to 20;
• R72 is each independently at each occurrence —(CH2)n24—, an o-, m-, or p-phenylene group, which may be substituted with one or more fluorine atoms;
• n24 is each independently at each occurrence an integer of 1 to 20;
• n21 is each independently at each occurrence 0 or 1;
• n22 is each independently at each occurrence 0 or 1;
• the sum of n21 and n22 is 1 or more;
• X3 is each independently at each occurrence —O—, —(OR74)n25—, —S—, —C(═O)—, —C(═O)O—, —O—C(═O)—, —O—C(═O)—O—, —Si(R75)2—, —(Si(R75)2O)n26—Si(R75)2—, —NR3C(═O)—, —C(═O)NR3—, —NR3C(═O)NR3—, —NR3C(═O)O—, —O—C(═O)NR3—, —NR3—, —SO2NR3—, or —SO2—;
• R74 is each independently at each occurrence a C1-6 alkylene group;
• n25 is each independently at each occurrence an integer of 1 to 5;
• R75 is each independently at each occurrence a phenyl group, a C1-6 alkyl group, or a C1-6 alkoxy group;
• n26 is each independently at each occurrence an integer of 1 to 100;
• R3 is each independently at each occurrence a hydrogen atom, a phenyl group, or an alkyl group having 1 to 6 carbon atoms;
• R73 is each independently at each occurrence —(CH2)n27—;
• n27 is an integer of 1 to 20;
• and
• Y is a di- to hexavalent hydrocarbon group and has a silicon atom and/or a siloxane bond;
• Xa2 is a single bond or a divalent organic group;
• β1, β2, β3, and β4 are each independently at each occurrence an integer of 1 to 9;
• t is each independently at each occurrence an integer of 2 to 10;
• R31 is each independently at each occurrence a hydrogen atom or a halogen atom;
• R32 is each independently at each occurrence a hydrogen atom or a monovalent organic group;
• in formula (A1), there is at least one Ram1Rb3-m1Si— wherein m1 is 1 to 3, and in formula (A2), there is at least one Ram1Rb3-m1Si— wherein m1 is 1 to 3;
• Rf1 is each independently at each occurrence R41r1R42r2R43r3Si-Z1—;
• Z1 is each independently at each occurrence an oxygen atom or a divalent organic group;
• R41 is each independently at each occurrence Rf1′;
• Rf1′ has the same definition as that of Rf1;
• in Rf1, the number of Si atoms linearly connected via the group Z1 is up to 5;
• R42 is each independently at each occurrence a hydroxyl group or a hydrolyzable group;
• R43 is each independently at each occurrence a hydrogen atom or a monovalent organic group;
• r1 is each independently at each occurrence an integer of 0 to 3;
• r2 is each independently at each occurrence an integer of 0 to 3;
• r3 is each independently at each occurrence an integer of 0 to 3;
• in each R41f1R42f2R43f3Si-Z1—, the sum of r1, r2, and r3 is 3;
• Rf2 is each independently at each occurrence a hydroxyl group or a hydrolyzable group;
• Rf3 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;
• p2 is each independently at each occurrence an integer of 0 to 3;
• p3 is each independently at each occurrence an integer of 0 to 3;
• in each Rf3p3Rf2p2Rf1p1Si—, the sum of p1, p2, and p3 is 3, and in formula (A3), there are at least two Si atoms to which a hydroxyl group or a hydrolyzable group binds;
• Rg1 is each independently at each occurrence R51s1R52s2R53s3C-Z2—;
• Z2 is each independently at each occurrence an oxygen atom or a divalent organic group;
• R51 is each independently at each occurrence Rg1′;
• Rg1′ has the same definition as that of Rg1;
• in Rg1, the number of C atoms linearly connected via the group Z2 is up to 5;
• R52 is each independently at each occurrence Ram1Rb3-m1Si-Z3—;
• Z3 is each independently at each occurrence an oxygen atom or a divalent organic group;
• R53 is each independently at each occurrence a hydrogen atom, a hydroxyl group, or a monovalent organic group;
• s1 is each independently at each occurrence an integer of 0 to 3;
• s2 is each independently at each occurrence an integer of 0 to 3;
• s3 is each independently at each occurrence an integer of 0 to 3;
• in each R51s1R52s2R53s3C-Z2—, the sum of s1, s2, and s3 is 3;
• Rg2 is each independently at each occurrence Ram1Rb3-m1Si-Z4—;
• Z4 is each independently at each occurrence an oxygen atom or a divalent organic group;
• Rg3 is each independently at each occurrence a hydrogen atom, a hydroxyl group, or a monovalent organic group;
• q1 is each independently at each occurrence an integer of 0 to 3;
• q2 is each independently at each occurrence an integer of 0 to 3;
• and
• q3 is each independently at each occurrence an integer of 0 to 3;
• in each Rg3q3Rg2q2Rg1q1C—, the sum of q1, q2, and q3 is 3, and in formula (A4), there are at least two Ram1Rb3-m1Si— wherein m1 is 1 to 3.