Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2006-01-24
2006-01-24
Solola, Taofiq (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C549S233000, C549S326000, C549S295000, C568S564000, C568S884000
Reexamination Certificate
active
06989455
ABSTRACT:
In the process for the conversion of maleic acid to gamma-butyrolactone, 1.4-butanediol and/or tetrahydrofuran, a feedstream comprising maleic acid is hydrogenated in a first hydrogenation zone to produce a reaction product comprising succinic acid and unreacted hydrogen which is then supplied to a second hydrogenation zone, where succinic acid is converted to 1,4-butanediol, the temperatures of the feedstream comprising maleic acid and the first hydrogenation zone are controlled such that the temperature of maleic acid in the feedstream and the first hydrogenation zone does not exceed about 130° C., thereby minimizing the corrosive effects of the maleic acid and prolonging reactor life and improving overall process economics.
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Knovel.com/knovel2Searchresults.jsp“Process/Industrial Instruments And Control Handbook”.
“Bonding E-glass to Wood Using a Modified Polyester Resin”, Bogner et al., COMPOSITES 2001 Convention and Trade Show; Composites Fabricators Association (CFA); Oct. 4, 2001.
Attig Thomas G.
Budge John R.
Hepfer Robert P.
Miller Craig T.
Norenberg Gregory A.
Davis William J.
ISP Investments Inc.
Sackey Ebenezer
Solola Taofiq
Yusko David P.
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