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US 7,842,843 B2Granted
Mixture containing 1,3-butadiene and process for producing the same
AssigneeKuraray Co., Ltd.
InventorsJin Tokuyasu, Hideharu Iwasaki
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Abstract
To provide a C4 fraction that contains significantly reduced amounts of butynes and methylallene and to provide a process for low-cost and effective production of ethers in which the C4 fraction is used as the starting material for a telomerization process. A mixture containing 25 to 80 mass % 1,3-butadiene, 13 to 68 mass % butenes and 2 to 15 mass % butanes with butynes and methylallene being contained in amounts of 50 ppm or less and 5 to 800 ppm, respectively.
Claims1
A process for producing an ether represented by the following general formula (II):
- wherein Ra is a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group, comprising:
- providing a mixture comprising 25 to 80 mass % 1,3-butadiene, 13 to 68 mass % butenes, 2 to 15 mass % butanes, 10 ppm or less butynes and 5 to 100 ppm methylallene;
- providing a catalyst solution comprising a hydroxyl compound represented by the following general formula (I):
- RaOH (I),
- wherein Ra is a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group, a palladium catalyst, a nitrogen-containing heterocyclic aromatic compound, an isocyanide compound, and a base;
- and
- feeding to a reactor the mixture and the catalyst solution to carry out a telomerization process.
4 more elements
Dependencies are inferred from the claim text.