公开(公告)号：US20210171793A1

公开(公告)日：2021-06-10

申请号：US17052285

申请日：2019-05-07

Applicant: Arkema Inc.

Inventor： David A. SEILER ,  James T. GOLDBACH ,  George FISHER

IPC: C09D127/16

Abstract: A fluoropolymer-based powdered composition is disclosed. The fluoropolymer has a very low melt viscosity, of less than 2 kilopoise (kP) at 230° C. and 100 s−1 and molecular weights of from 15 kDa to 200 kDa. The composition can be used for powder coating or rotolining processes. The coatings or interior surfaces of the coated or rotolined parts exhibit roughness values, Ra, of less than 25 μin (0.64 μm) corresponding to very smooth surfaces. The coating exhibit very good adhesion to substrates with and without surface preparation as well as very good adhesion to substrates with and without primer.