High performance composite coating

Details High performance composite coating High performance composite coating

1992-10-13

1994-04-05

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 369, 428 3691, 138137, 138139, 138143, 138145, 138146, F17L 914

Patent

active

053003365

ABSTRACT:
The invention provides a composite protective coating applied to a steel pipe, the coating comprising an epoxy resin primer bonded to the outer surface of the pipe, a polyolefin outer sheath, and an interlayer consisting of a mixture of epoxy resin and polyolefin. The composition of the mixture forming the interlayer is graded throughout its thickness, being substantially all epoxy resin adjacent to the primer coating and substantially all polyolefin adjacent to the sheath.

REFERENCES:
patent: Re30006 (1979-05-01), Sakayori et al.
patent: T973015 (1978-08-01), Chadwick et al.
patent: 4062997 (1977-12-01), Hotta et al.
patent: 4213486 (1980-07-01), Samour et al.
patent: 4287034 (1981-09-01), Pieslak et al.
patent: 4319610 (1982-03-01), Eckner
patent: 4606953 (1986-08-01), Suzuki et al.
patent: 4685985 (1987-08-01), Stueke
patent: 4853297 (1989-08-01), Takahashi et al.

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