Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From heterocyclic reactant containing as ring atoms oxygen,...
Reexamination Certificate
2008-07-15
2008-07-15
Buttner, David (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From heterocyclic reactant containing as ring atoms oxygen,...
C528S421000, C502S150000, C502S171000
Reexamination Certificate
active
07399822
ABSTRACT:
(Salph or methoxy salph) Co (initiating ligand) catalyze homopolymerizing rac-PO to produce pure highly isotactic PPO and rac-1-butylene oxide to produce pure isotactic poly(butylene oxide). A product is unfractionated isotactic PPO of m-dyad content >81%, normally at least 99%.
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Ajiro Hiroharu
Allen Scott D.
Coates Geoffrey W.
Cohen Claire
Peretti Kathryn
Bacon & Thomas PLLC
Buttner David
Cornell Research Foundation Inc.
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