Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From ketone or ketene reactant
Reexamination Certificate
2005-04-19
2005-04-19
Truong, Duc (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From ketone or ketene reactant
C528S487000, C528S491000, C528S499000
Reexamination Certificate
active
06881816
ABSTRACT:
A melt processible Polyether Ether Ketone (PEEK) polymer with novel end-group structure is synthesized electrophilically using Methane Sulfonic Acid containing Methane Sulfonic Anhydride or Phosphorous Pentoxide. The product so obtained shows controlled structure with elimination of reactive end group like —COOH and is therefore melt processible by conventional techniques and exhibits high thermal and mechanical properties making it useful high temperature engineering and specialty plastics. It can be extruded into a rod, film and can also be molded into commercially useful products.
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Gharda Keki Hormusji
Iyer Venkat Srinivasan
Limaye Sanjav Chintaman
Trivedi Prakash Druman
Vakil Utpal Mahendra
Gharda Chemicals Ltd.
Goldberg Joshua B.
Nath & Associates PLLC
Novick Harold L.
Truong Duc
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