Patent ID: 11866548
Assignee: MORESCO CORPORATION
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 3:
4. A perfluoropolyether compound represented by the following formula (3):, where:
a is an integer of 1 to 5 and x is a real number of 1 to 5;
R1 is a hydrogen atom, a hydrocarbon group, or a polar group;
R2 and R3 are each independently —F, —CH2OH, —CH2OCH2CH(OH)CH2OH, —CH2OCH2CH(OH)CH2OCH2CH(OH)CH2OH, —CH2O(CH2)gOH, —CH2OCH2CH(OH)CH2OC12H9O, —CH2OCH2CH(OH)CH2OC10H7, or CH2OCH2CH(OH)CH2OC6H4—R4, where g is a real number of 1 to 10, and R4 is a hydrogen atom, a hydroxyl group, a C1-C4 alkoxy group, an amino group, or an amido group; and
Rf is represented by the following formula (2):

Rf;(OCF2)b(OCF2CF2)c(OCF2CF2CF2)d(OCF2CF2CF2CF2)e(OCF2CF(CF3))fO  (2)

where:
b and c are each a real number of 0 to 50;
d, e, and f are each a real number of 0 to 30; and
at least one of b, c, d, e, and f is a real number of 1 or more.