Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate
2006-12-19
2006-12-19
McKane, Joseph K. (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C560S232000, C549S513000
Reexamination Certificate
active
07151192
ABSTRACT:
A manufacturing process for the preparation of α,α-branched alkane carboxylic acids, by reacting a mono-olefin or a precursor thereof, with carbon monoxide in the presence of a strong acid catalyst characterized in that the starting olefin is a dimmer C8 or trimer C12 derived from n-butene, which predominantly comprise 2-butene, that the acid catalyst is composed of BF3/H3PO4in a molar ratio of BF3:H3PO4in the range of from 0.5:1.0 to 5.0:1.0, or of CF3SO3H, that the weight ratio of the catalyst relative to the mono-olefin is in the range of from 1:1 to 10:1, that the reaction is carried out at a temperature in the range of from 60 to 140° C., and with an initial water content in the catalyst system in the range of from 8 to 25 wt %; and vinyl esters and glycidyl esters derived from said carboxylic acids.
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Toho Chemical Industry Co., Ltd., 1983, CAS: 98: 139012.
Petrus Leonardus
Stichter Hendrik
Stil Hans Arie
Hexion Specialty Chemicals, Inc.
Jones Lisa Kimes
McKane Joseph K.
Shiao Robert
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