公开(公告)号：US20230191450A1

公开(公告)日：2023-06-22

申请号：US18068587

申请日：2022-12-20

Applicant: AXALTA COATING SYSTEMS IP CO., LLC

Inventor： Shih-wa Wang ,  Cameron Stevens ,  James Neal ,  Carmen Flosbach ,  Michael S. Wolfe ,  John R. Moore

IPC: B05D5/02 ,  C09D167/02 ,  B05D3/04

CPC classification number: B05D5/02 ,  C09D167/02 ,  B05D3/0406

Abstract: Methods of coating a substrate are provided. In an exemplary embodiment, a coating composition is applied to the substrate with a high transfer efficiency applicator to produce a coating layer, where the high transfer efficiency applicator and the substrate remain spatially separate while the coating composition is applied. A droplet of the coating composition expelled from the high transfer efficiency applicator has a particle size of about 10 microns or greater. The coating composition has a viscosity of from about 1,000 to about 1,000,000 centipoise when the coating composition is subject to a shear rate of about 0.1 reciprocal seconds (s−1). However, the coating composition is non-Newtonian such that a coating composition viscosity decreases when the shear rate is increased to the coating composition. The coating layer is impinged with a gas such that a coating layer surface moves upon impingement with the gas.

公开(公告)号：US20220332134A1

公开(公告)日：2022-10-20

申请号：US17658847

申请日：2022-04-12

Applicant: AXALTA COATING SYSTEMS IP CO., LLC

Inventor： Michael S. Wolfe ,  Cameron Stevens ,  James Neal ,  Petra Stoffel ,  Matthias Baltrusch

IPC: B41M5/00 ,  C09D11/324 ,  C09D11/54 ,  C09D11/104

Abstract: A method includes applying a coating composition to a substrate through a high transfer efficiency applicator to form the coating layer on the substrate wherein a loss of volatiles is less than about 0.5 weight, and wherein the coating composition comprises: A. a resin comprising an acrylic, a polyester, or combinations thereof; B. a melamine cross-linker; C. an optional pigment; D. an organic solvent; and E. at least one polyurea crystal sag control agent that is the reaction product of an amine and an isocyanate, that has a melting point of from about 50° C. to about 150° C., and that is present in an amount of from about 0.1 to about 4 weight percent based on a total weight of the coating composition; and wherein the coating composition has a wet film thickness of at least about 30 microns measured at about 45 degrees without visible sag.

公开(公告)号：US20250128286A1

公开(公告)日：2025-04-24

申请号：US18687458

申请日：2022-08-26

Applicant: AXALTA COATING SYSTEMS IP CO., LLC

Inventor： Michael S. Wolfe ,  Cameron Stevens ,  James Neal ,  Petra Stoffel ,  Matthias Baltrusch

IPC: B05D1/02

Abstract: A method includes applying a coating composition to a substrate through a high transfer efficiency applicator, wherein the coating composition comprises a polyamide wax; wherein the coating composition has a wet film thickness of at least about 30 microns measured at about 45 degrees without visible sag after cure, wherein the viscosity measured at a shear rate of about 1 s-1 recovers, after a high shear rate of about 10000 s-1 is applied for about 20 seconds, to within about 95% of a steady state viscosity achieved at greater than about 100 seconds of continuous shearing at about 1 s-1, in less than about 5 seconds; and wherein the coating composition has a complex viscosity measured at a temperature of about 60° C. that is reduced to from about 60 to about 500 mPa-s when the complex viscosity measured at about 30° C. is from about 800 to about 8000 mPa-s.