摘要:
A multilayer paint system wherein each layer of paint uses the same activator and the same mixing ratio of film-forming binder to activator. The paint system herein is particularly useful for automotive refinishing applications.
摘要:
A process for making coating compositions with adjustable properties by blending two or more coating compositions of distinctly different attributes to achieve custom properties. The coating compositions formed herein are particularly useful in automotive refinish applications where customized properties are desired depending on the needs of the job.
摘要:
An acrylic oligomer useful in a two stage curing coating composition having a weight average molecular weight of 100 to 3000, a polydispersity of 1.01 to 1.7 and one or more reactive functionalities reactive with isocyanate groups and having 7.0 to 40.0 weight percent, based on the weight of the acrylic oligomer, of hydroxyl moieties wherein at least 40.0 to 70.0 weight percent of the hydroxyl moieties are provided by hydroxy butyl acrylate and the remaining hydroxyl moieties are provided by fast reacting hydroxyl constituents of hydroxy ethyl acrylate, hydroxy ethyl methacrylate or any mixtures thereof and by slow reacting hydroxyl constituents of secondary hydroxyl containing hydroxy propyl acrylate and secondary hydroxyl containing hydroxy propyl methacrylate and any mixtures thereof.
摘要:
The invention is directed to a two-stage cure coating composition comprising a two component composition of a binder and a crosslinking component; the binder comprises an acrylic polymer having a weight average molecular weight of 3,000 to 50,000 and hydroxyl moieties in the range of 7.0 to 40.0 weight percent, based on the weight of the acrylic polymer; wherein at least 40.0 weight percent of the hydroxyl moieties are provided by hydroxy butyl acrylate; and the crosslinking component comprises an organic polyisocyanate; and the first stage curing of a finish of the composition on a substrate forms a water spot free finish within 90 minutes of application and the composition has a pot life of less than a 2 second rise in Zahn cup viscosity in 150 minutes; and the invention also is directed to a method of producing a finish on a substrate utilizing the two component coating composition which comprises forming a two stage cure coating composition by mixing together the above described binder component and a cross-linking component; applying a layer of the coating composition over the substrate; first stage curing the layer on the substrate to a water spot free finish; and second stage curing the first stage cured layer on the substrate into a finish having excellent appearance and excellent physical properties.