Composition and methods for providing coatings; materials; application techniques; and, resulting coated substrates

摘要

Techniques and compositions for applying films to a variety of substrates, from water-borne coating compositions, are provided. The techniques involve providing desiccant and applying the desiccant with water-borne film-forming composition, in application to a substrate. The desiccant composition provides for take up of free water in of the film-forming composition, without total reliance on ambient conditions, to advantage. Compositions, methods, techniques and resulting constructions are described. The techniques can be applied in wet thick film applications, but are not limited to such applications.

主权项

1. A method of forming a film on a substrate; the method including a step of:
(a) applying, by spray coating, a wet, water-borne, film to the substrate; the wet film comprising:
(i) water-borne film forming composition; and,(ii) desiccant that is at least partially active, in an amount adequate to at least partially take up free water in the wet, water-borne, film;(iii) the step of applying comprises mixing by impingement mixing, before application on the substrate, two component streams: a first comprising the water-borne film forming composition; and, a second comprising the desiccant.