公开(公告)号：US20210355256A1

公开(公告)日：2021-11-18

申请号：US17386059

申请日：2021-07-27

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Shinichi MINAMI ,  Takashi ENOMOTO ,  Ikuo YAMAMOTO ,  Xin ZENG

IPC: C08F214/18 ,  C08F220/18 ,  C08F220/20 ,  C08F220/06 ,  C08G18/73 ,  C09D127/12 ,  C09D5/16

Abstract: A fluorine-containing polymer having repeating units derived from (a) a fluorine-containing monomer, (b) a fluorine-free non-crosslinkable monomer, and (c) a fluorine-free crosslinkable monomer. The fluorine-containing monomer (a) is a compound represented by formula: CH2═C(-X)—C(═O)—Y—Z—Rf . . . (a-I), wherein X is a hydrogen atom, a monovalent organic group or a halogen atom, Y is —O— or —NH—, Z is a direct bond or a divalent organic group, and Rf is a fluoroalkyl group having 1 to 20 carbon atoms. The fluorine-free non-crosslinkable monomer (b) includes (b1) a cyclic hydrocarbon group-containing monomer and (b2) a low Tg monomer, a homopolymer of which has a glass transition temperature (Tg) of lower than 0° C. Also disclosed is a coating composition including the fluorine-containing polymer and a liquid medium, a method for producing a coated article which includes coating an article with the coating composition and a coated article.

公开(公告)号：US20220275132A1

公开(公告)日：2022-09-01

申请号：US17696350

申请日：2022-03-16

Applicant: DAIKIN FLUOROCHEMICALS (CHINA) CO., LTD. ,  DAIKIN INDUSTRIES, LTD.

Inventor： Wenbin LI ,  Xin ZENG ,  Hideto NAKAGAWA

IPC: C08F259/08 ,  C09D151/00

Abstract: A modified polymer including (a) a main chain containing a fluorine-containing polymer and (b) a side chain represented by the following formula (b1′) and/or a side chain represented by the following formula (b2′). The formula (b1′) is —CH2—CRb1(—X)—C(═O)—Y—Z—Rf, wherein X is a hydrogen atom, a methyl group, or a halogen atom; Y is —O— or —NH—; Z is a direct bond or a divalent organic group; Rf is a C1-C20 fluoroalkyl group; and Rb1 is a hydrogen atom or a monovalent organic group. The formula (b2′) is —CH2—CRb2(—R1)—C(═O)—O—Si(—CH3)2—[O—Si(—CH3)2]n—O—Si(—CH3)2—R2, wherein R1 is a hydrogen atom or a methyl group; R2 is a hydrogen atom or a methyl group; Rb2 is a hydrogen atom or a monovalent organic group; and n is 3 to 200.