Syntactic polyolefin composition for pipe coating

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

Reexamination Certificate

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C524S474000, C523S218000, C523S219000, C428S036500

Reexamination Certificate

active

07091277

ABSTRACT:
The invention relates to a syntactic polyolefin composition for pipe coating, wherein the composition comprises a β-nucleated propylene polymer and microspheres. The invention also relates to a method for the preparation of the composition for pipe coating and to an off-shore pipe coated with the syntactic polyolefin composition.

REFERENCES:
patent: 5218016 (1993-06-01), Jarrin et al.
patent: 6251995 (2001-06-01), Hesse et al.
patent: 2003/0157286 (2003-08-01), Hesse et al.
patent: 0 473 215 (1992-03-01), None
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patent: 0 575 012 (1993-12-01), None
patent: WO 93/19927 (1993-10-01), None
patent: WO 97/28213 (1997-08-01), None
patent: WO 99/05447 (1999-12-01), None
“New Ways of influencing the toughness of isotactic polypropylene”, Baran, Norbert et al, ISSN: 0322-7340. POLENG, 2000.

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