Coating system for a porous substrate using an...

Details Coating system for a porous substrate using an... Coating system for a porous substrate using an...

2005-02-01

2005-02-01

Ahmed, Sheeba (Department: 1773)

Stock material or miscellaneous articles

Composite

Of epoxy ether

C428S423100, C428S424200, C428S448000, C428S500000

Reexamination Certificate

active

06849338

ABSTRACT:
A coating system comprises a basecoat of an thermosetting asphalt extended, chemically cross linked-urethane/epoxy hybrid basecoat resting on a substrate, preferably a porous substrate such as concrete or wood that off-gas when coated with a thermoplastic material; and a thermoplastic powder coating topcoat overlying at least the base coat. The thermosetting basecoat composition consisting essentially of, in weight percent based on final formulation, and between 10 and 90% of a petroleum asphalt; between 10 and 90%, of a hydroxy-terminated homopolymer; and between 0.1 and 30% of a functional epoxy reactive diluent for reducing the viscosity of the composition; and further up to 5% of a surfactant for improving surface imperfections, up to 5% of an anti-oxidant; and up to 25% of a thickening agent.

REFERENCES:
patent: 4582889 (1986-04-01), Yamaguchi et al.
patent: 4818367 (1989-04-01), Winkler
patent: 6231967 (2001-05-01), Neukirchen
patent: 6544596 (2003-04-01), Clemens et al.

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