公开(公告)号：US20190322873A1

公开(公告)日：2019-10-24

申请号：US16502375

申请日：2019-07-03

Applicant: AGC Inc.

Inventor： Yui HASEGAWA ,  Yuji Hara ,  Naoko Sumi ,  Shun Saito

IPC: C09D5/03 ,  C08F214/24 ,  C09D127/12 ,  C08F218/04 ,  C09D131/02

Abstract: To provide a powder coating material capable of forming a coating film excellent in impact resistance, flexibility and adhesion to substrate and excellent in surface smoothness even when formed under low temperature film-forming conditions.The powder coating material of the present invention is a powder coating material comprising a fluorinated polymer having units based on a fluoroolefin, units based on a monomer represented by the formula X—Z and units based on a monomer represented by the formula CHR21═CR22 (CH2)nCOOH, wherein the content of the units based on a monomer represented by the formula X—Z is from 5 to 20 mol % to all units in the fluorinated polymer, and the fluorinated polymer has a melt viscosity at 170° C. of from 20 to 100 Pa·s (in the formulae, X is a specific monovalent polymerizable group, Z is a specific alkyl group, a specific cycloalkyl group or a specific aryl group, R21 and R22 are each independently a hydrogen atom or a specific alkyl group, and n is an integer of from 0 to 12.

公开(公告)号：US11130870B2

公开(公告)日：2021-09-28

申请号：US16502375

申请日：2019-07-03

Applicant: AGC Inc.

Inventor： Yui Hasegawa ,  Yuji Hara ,  Naoko Sumi ,  Shun Saito

IPC: C08F218/04 ,  C09D127/12 ,  C09D131/02 ,  C09D5/03 ,  C08F214/24

Abstract: To provide a powder coating material capable of forming a coating film excellent in impact resistance, flexibility and adhesion to substrate and excellent in surface smoothness even when formed under low temperature film-forming conditions.
The powder coating material of the present invention is a powder coating material comprising a fluorinated polymer having units based on a fluoroolefin, units based on a monomer represented by the formula X—Z and units based on a monomer represented by the formula CHR21═CR22 (CH2)nCOOH, wherein the content of the units based on a monomer represented by the formula X—Z is from 5 to 20 mol % to all units in the fluorinated polymer, and the fluorinated polymer has a melt viscosity at 170° C. of from 20 to 100 Pa·s (in the formulae, X is a specific monovalent polymerizable group, Z is a specific alkyl group, a specific cycloalkyl group or a specific aryl group, R21 and R22 are each independently a hydrogen atom or a specific alkyl group, and n is an integer of from 0 to 12.