Aqueous epoxidation process using modified titanium zeolite

Patent 6194591 Issued on February 27, 2001. Estimated Expiration Date:

April 27, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3351635

Olefin epoxidation
Patent #: 4367342
Issued on: 01/04/1983
Inventor: Wulff , et al.

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Catalyst preparation and epoxidation process Patent #: 6063942
Issued on: 05/16/2000
Inventor: Grey

Inventors

Application

No. 559287 filed on 04/27/2000

US Classes:

549/533, Heavy metal containing catalyst utilized502/66, And Group VIII (Iron Group or Platinum Group) metal containing502/262, Platinum or palladium549/523, Epoxidation at site of ethylenic unsaturation549/531Hydrogen peroxide utilized

Examiners

Primary: Aulakh, Charanjit S.

Attorney, Agent or Firm

Carroll; Kevin M.

Foreign Patent References

1001038A7 BE. 06/13/1989
4-352771 JP. 12/13/1992
WO 98/00413 WO. 01/13/1998

International Classes

C01D 301/12
B01J 021/16

Abstract

An olefin epoxidation process is described. The process comprises epoxidizing an olefin with hydrogen peroxide in the presence of a modified titanium zeolite catalyst in water solvent. The titanium zeolite catalyst is modified with a platinum, palladium or copper compound. The modified catalyst unexpectedly increases olefin epoxidation activity.