Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2005-05-03
2005-05-03
Wood, Elizabeth D. (Department: 1755)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S092000, C526S093000, C526S144000, C526S335000, C526S171000, C526S138000, C526S153000, C526S340400, C502S152000, C502S103000, C502S150000, C502S117000, C502S153000, C502S118000, C502S154000, C502S129000, C502S132000
Reexamination Certificate
active
06887956
ABSTRACT:
A catalyst system suitable for use in the production of high cis polybutadiene is disclosed. The catalyst system includes a cobalt salt of the formulaimg id="CUSTOM-CHARACTER-00001" he="2.46mm" wi="1.44mm" file="US06887956-20050503-P00900.TIF" alt="custom character" img-content="character" img-format="tif" ?CoAx?, where A is a monovalent or divalent anion and x is 1 or 2; an alkyl aluminum chloride compound of the structure R2AlCl, where R is an alkyl group containing 2-8 carbon atoms; a trialkyl aluminum compound of the formula R3Al, where R is an alkyl group containing 2-8 carbon atoms; and a catalytic amount of water.
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Le Roy Patrick
Potlet Jean-Marc
Sabatier Alain
van der Huizen Adriaan A.
Dow Global Technologies Inc.
Wood Elizabeth D.
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