Patent ID: 11913175
Assignee: AGC INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  D | IPC C  D

Claim 0:
1. A polymer comprising the following units a, and at least the following units b selected the following units b and the following units c,
wherein the ratio of units a to all the units in the polymer is from 28 to 70 mol %, the total ratio of units b and units c to all the units in the polymer is from 30 to 72 mol %, and
the ratio of units b to the sum of units b and units c is at least 45 mol %:
units a: units represented by the following formula 1

—(CH2—CHRf)—  formula 1

wherein Rf is a C1-8 perfluoroalkyl group,
units b: units represented by the following formula 2

—(CH2—CH(OH))—  formula 2

units c: units represented by the following formula 3

—(CH2—CH(OC(═O)R))—  formula 3

wherein R is a C1-4 alkyl group.