Fluoroelastomers

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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Details

C525S200000, C525S199000, C525S231000, C526S242000, C526S266000, C526S247000, C526S253000, C526S250000, C526S252000, C526S249000

Reexamination Certificate

active

07834097

ABSTRACT:
VDF-based curable fluorelastomers, having a glass transition temperature from −10° C. to −35° C., comprising: B) monomer of formula: CF2═CFOCF2OCF3(a), C) one or more comonomers selected from: tetrafluoroethylene (TFE), per-fluoromethylvinylether (PMVE), perfluoropropene (HFP), and an amount of —COF end groups in the polymer lower than the sensitivity limit of the method which uses the FT-IR spectroscopy described in the present application.

REFERENCES:
patent: 2003/0004273 (2003-01-01), Apostolo et al.
patent: 2003/0088040 (2003-05-01), Arrigoni et al.
patent: 2005/0245691 (2005-11-01), Stanga et al.
patent: 2007/0093625 (2007-04-01), Arrigoni et al.
patent: 1 621 557 (2006-02-01), None
patent: 2004-163927 (2004-06-01), None
patent: 2004-219579 (2004-08-01), None
patent: 2004-163927 (2004-10-01), None

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