Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1984-06-15
1986-08-19
Kittle, John E.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428418, 428461, 138143, 138146, F16L 914
Patent
active
046069534
ABSTRACT:
A polypropylene coated steel pipe comprising a steel pipe, an adhesive layer coated on the external surface of the steel pipe, which has been subjected to a pretreatment, and a polypropylene layer coated on the adhesive layer. The outermost polypropylene layer comprises, as a main constituent, a crystalline ethylene-propylene block copolymer and the adhesive layer comprises a modified polyolefin adhesive.
REFERENCES:
patent: Re31354 (1983-08-01), Eckner
patent: T473015 (1978-08-01), Chadwick et al.
patent: 3877490 (1975-04-01), Tsubouchi et al.
patent: 4091134 (1978-05-01), Uemura et al.
patent: 4142555 (1979-03-01), Satake et al.
patent: 4213486 (1980-07-01), Samour et al.
Internal & External Protection of Pipes, BHRA Fluid Engineering, Sep. 15-17, 1981, pp. 307-316.
Hinenoya Saburo
Inuizawa Yoshihiro
Ishida Masami
Ohtsuki Fuyuhiko
Shindou Yoshio
Kittle John E.
Nippon Steel Corporation
Seidleck James J.
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