C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
117/113, 117/183
C08L 81/02 (2006.01) B05D 7/14 (2006.01) C09D 181/02 (2006.01) F16L 58/10 (2006.01)
Patent
CA 1233287
POLYMER ALLOY COATING FOR METAL SUBSTRATE ABSTRACT A novel polymer alloy coating is provided consisting essentially of polyphenylene sulfide and an amount of polyimide. The polyimide is produced by the crosslinking and curing of an acetylene terminated aromatic polyimide oligomer resin. The amount of polyimide utilized is sufficent to enhance the adhesiveness of the polyphenylene sulfide to a metal substrate without substantially changing the melt flow properties, chemical resistance and thermal stability of the polyphenylene sulfide. A polymer alloy resin composition is also provided for application to the metal substrate to produce the polymer alloy coating. The novel polymer alloy coating is particularly suitable for coating pipes, particularly pipe couplings for oil and gas well production pipes which are exposed to extreme temperatures, pressures and corrosive environments.
419450
Goodman Barnard P.e.
Mettes Hall J.
Amf Incorporated
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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