IP Library Granted Patent US 7,049,474
Granted Patent B1
US 7,049,474 · App. 09/660,099 · Granted May 23, 2006

Water diluted cumene hydroperoxide solutions

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Quick Facts
Patent No.
US 7,049,474
App. No.
09/660,099
Granted
May 23, 2006
Kind
B1
Abstract

The present invention provides for the use of water, rather than cumene, as a more environmentally acceptable diluent for purified cumene hydroperoxide (CHP) solutions. From 1 to about 6 weight percent water can be used to dilute purified CHP solutions, thus reducing or eliminating the use of a hazardous compound, cumene, as a diluent. The method and CHP-water solutions of the present invention should significantly reduce or eliminate the hazardous emissions problems encountered with the use of cumene as a diluent and make CHP solutions more environmentally acceptable to produce, transport and use. Water as a diluent also depresses the freezing point of the resultant solution, thereby permitting year-round use of higher concentration CHP solutions. Water diluted CHP solutions will also reduce cumene-related impurities in finished products made therefrom.

Claims (16)

1. A method of reducing hazardous emissions from a purified cumene hydroperoxide (CHP) solution, said method comprising diluting said purified CHP solution with x weight percent water to produce a mixture;

wherein 1≦x≦6.

2. The method of claim 1 further including mixing said CHP-water mixture.

3. The method of claim 1 further including transporting said CHP-water mixture.

4. The method of claim 1 , wherein 2≦x≦3.

5. The method of claim 1 , wherein said purified CHP solution is at least 80% CHP.

6. The method of claim 1 , wherein said purified CHP solution is at least 88% CHP.

7. The method of claim 1 , wherein said purified CHP solution is at least 90% CHP.

8. A method of depressing the freezing point of a purified cumene hydroperoxide (CHP) solution, said method comprising diluting said purified CHP solution with x weight percent water to produce a CHP mixture;

wherein 1≦x≦4.

9. The method of claim 8 further including mixing said CHP-water mixture.

10. The method of claim 8 further including transporting said CHP-water mixture.

11. The method of claim 1 , wherein 2≦x≦3.

12. The method of claim 1 , wherein said purified CHP solution is at least 80% CHP.

13. The method of claim 1 , wherein said purified CHP solution is at least 88% CHP.

14. The method of claim 1 , wherein said purified CHP solution is at least 90% CHP.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 19, 2011
From: SUNOCO, INC. (R&M)
To: HONEYWELL INTERNATIONAL INC.
Reel/Frame 026795/0045 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 5, 2002
From: ARISTECH CHEMICAL CORPORATION
To: SUNOCO, INC. (R&M)
Reel/Frame 012665/0008 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 12, 2000
From: HENRY, KEITH E.; AIKEN, JOHN E.
To: ARISTECH CHEMICAL CORPORATION
Reel/Frame 011101/0538 →