公开(公告)号：US20210261705A1

公开(公告)日：2021-08-26

申请号：US17319667

申请日：2021-05-13

Applicant: AGC Inc.

Inventor： Hiroyuki HARA ,  Motohiro TAKEMURA ,  Yujiro TOMIZUKA

IPC: C08F218/08 ,  C08F214/18 ,  C09D127/12 ,  C09D131/04

Abstract: To provide a fluorinated copolymer capable of obtaining an article excellent in water and oil repellency, and friction durability of water and oil repellency. A fluorinated copolymer having units based on the following monomer a and units based on the following monomer b, wherein the proportion of the units based on the monomer a is from 20 to 50 mol % based on the total number of moles of units constituting the fluorinated copolymer, the mass average molecular weight is from 20,000 to 100,000, and the ratio of the half-width W1 of the peak of the fluorinated copolymer to the peak width W2 in a chromatogram obtainable by high performance liquid chromatography measurement is from 0.35 to 0.55: Monomer a: a compound represented by CH2═CH—Rf (Rf: a C1-8 perfluoroalkyl group; Monomer b: a monomer copolymerizable with the monomer a.

公开(公告)号：US20210404119A1

公开(公告)日：2021-12-30

申请号：US17474097

申请日：2021-09-14

Applicant: AGC Inc.

Inventor： Yuzuka YOSHIOKA ,  Motohiro TAKEMURA ,  Hiroyuki HARA

IPC: D21H21/16 ,  C08F216/06 ,  C08F218/08 ,  D21H19/12

Abstract: To provide a polymer which can provide a water- and oil-proof paper with excellent water and oil resistance. A polymer comprising the following units a, and at least the following units b among 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 —(CH2—CHRf)— (wherein Rf is a C1-s perfluoroalkyl group), units b: units represented by —(CH2—CH(OH))—, units c: units represented by —(CH2—CH(OC(═O)R))— (wherein R is a C1-4 alkyl group).

公开(公告)号：US20190016840A1

公开(公告)日：2019-01-17

申请号：US16133839

申请日：2018-09-18

Applicant: AGC Inc.

Inventor： Junsuke KAWANA ,  Motohiro TAKEMURA ,  Eiji MORIMOTO ,  Hiroyuki HARA

IPC: C08F220/24 ,  C09D7/40 ,  C09D133/16 ,  D21H19/20 ,  D21H17/37 ,  D21H21/16

Abstract: To provide a liquid repellent composition whereby a treated article excellent in liquid repellency is obtainable, which is excellent in stability and does not have such a problem as an odor attributable to ammonia or an organic amine; a method for its production; and a method for producing oil resistant paper. The liquid repellent composition comprises a copolymer (A) having structural units derived from a monomer (a) represented by the formula RF-Q-X—C(O)C(R)═CH2 (RF is a C4-6 perfluoroalkyl group, Q is a divalent hydrocarbon group that does not contain a fluorine atom; X is —O— or NH—, and R is a hydrogen atom, a methyl group or a chlorine atom) and structural units derived from a monomer (b) having an anionic group, alkali metal ions and an aqueous medium; wherein the mass average molecular weight of the copolymer (A) is at most 84,000; at least some of counterions to the anionic groups are alkali metal ions; and the molar ratio of alkali metal ions to anionic groups in the liquid repellent composition is from 0.6 to 1.29.

公开(公告)号：US20220204803A1

公开(公告)日：2022-06-30

申请号：US17655301

申请日：2022-03-17

Applicant: AGC Inc.

Inventor： Hiroyuki HARA ,  Motohiro TAKEMURA ,  Yuzuka KAMIJO

IPC: C09D127/12 ,  C08F214/18 ,  C09D5/02 ,  C09D7/45

Abstract: A liquid repellent composition which can provide an article with good alcohol repellency is provided. A liquid repellent composition comprising a fluorinated polymer and an aqueous medium, wherein the fluorinated polymer comprises units based on a monomer a, units based on a monomer b and units based on a monomer c. Monomer a: a compound represented by CH2═CH—Rf (wherein Rf is a C1-8 perfluoroalkyl group). Monomer b: a fluorine-free nonionic surfactant having a polymerizable carbon-carbon double bond. Monomer c: another monomer copolymerizable with the monomer a and the monomer b.

公开(公告)号：US20220204667A1

公开(公告)日：2022-06-30

申请号：US17655396

申请日：2022-03-18

Applicant: AGC Inc.

Inventor： Yuzuka KAMIJO ,  Hiroyuki HARA ,  Motohiro TAKEMURA

IPC: C08F214/26 ,  C08F2/28

Abstract: A water- and oil-proofing composition stable under highly alkaline conditions is provided. A water- and oil-proofing composition comprising a fluorinated polymer and an aqueous medium, wherein the fluorinated polymer comprises units based on a monomer a and units based on a monomer b. Monomer a: a compound represented by CH2═CH—Rf (wherein Rf is a C1-8 perfluoroalkyl group). Monomer b: a compound having a polymerizable unsaturated group and a cationic group.