Coating processes – Vacuum utilized prior to or during coating – Organic base
Patent
1996-09-18
1998-03-24
Cameron, Erma
Coating processes
Vacuum utilized prior to or during coating
Organic base
4273935, B05D 312
Patent
active
057310351
ABSTRACT:
A process for making a paintable polymer article is described which comprises impregnating a polymeric substrate having a plurality of pores, the pores having a number average pore cross-section of less than 50 square microns, with a liquid sealant having a viscosity less than 25 kPa.s and heating the impregnated polymeric substrate to cure the sealant. The paintable polymer article may be coated with a paint to form a painted polymer article. The inventors have found that this invention helps prevent paint popping due to the expansion of solvents trapped in voids in the polymer article during paint drying or curing operations, particularly paint popping caused by voids in the polymer article which are exposed by cutting or trimming the polymer article after compression molding.
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Cameron Erma
Cook Composites and Polymers
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