IP Library › Granted Patent US 7,655,816
Granted Patent B2
US 7,655,816 · App. 12/079,824 · Granted Feb 2, 2010

Method for stabilizing menthyl lactate

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Quick Facts
Patent No.
US 7,655,816
App. No.
12/079,824
Granted
Feb 2, 2010
Kind
B2
Abstract

A method for stabilizing menthyl lactate is disclosed. The method comprises combining water with a solution comprising menthyl lactate and a water-miscible organic solvent in amounts effective to precipitate menthyl lactate from the resulting aqueous mixture. The aqueous precipitation method is simple to practice, and it provides menthyl lactate having remarkably improved storage stability.

Claims (6)

1. Menthyl lactate solid composition obtained by a method which consists of combining water with a solution consisting of menthyl lactate and a water-miscible organic solvent in amounts effective to precipitate menthyl lactate from the resulting aqueous mixture, wherein the precipitation provides menthyl lactate having improved stability compared with that of an unprecipitated sample.

2. Menthyl lactate of claim 1 that retains a melting point greater than 43.5° C. after storage for at least one week.

3. Menthyl lactate of claim 1 that retains a GC purity greater than 99.5% after storage for at least one week.

4. Menthyl lactate of claim 1 that retains an acid number less than 0.2 mg KOH/g after storage for at least one week.

5. Menthyl lactate of claim 1 that retains a faint, minty odor after storage for at least one week.

6. Menthyl lactate of claim 1 that is isolated from the aqueous mixture as a powder or crystals.

Assignments (12)
RELEASE OF SECURITY INTEREST Recorded Feb 1, 2016
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: PINOVA HOLDINGS, INC; RENESSENZ LLC
Reel/Frame 037631/0376 →
CHANGE OF NAME Recorded May 9, 2011
From: LYONDELLBASELL FLAVORS & FRAGRANCES, LLC
To: RENESSENZ, LLC
Reel/Frame 026246/0863 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 11, 2011
From: MILLENNIUM SPECIALTY CHEMICALS INC.
To: LYONDELLBASELL FLAVORS & FRAGRANCES, LLC
Reel/Frame 025619/0024 →
SECURITY AGREEMENT Recorded Dec 23, 2010
From: LYONDELLBASELL FLAVORS & FRAGRANCES, LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
Reel/Frame 025562/0245 →
RELEASE OF SECURITY INTEREST Recorded Dec 23, 2010
From: CITIBANK, N.A., AS ADMINISTRATIVE AGENT
To: LYONDELLBASELL FLAVORS & FRAGRANCES, LLC
Reel/Frame 025563/0717 →
RELEASE OF SECURITY INTEREST Recorded Dec 23, 2010
From: UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT
To: LYONDELLBASELL FLAVORS & FRAGRANCES, LLC
Reel/Frame 025563/0777 →
RELEASE OF SECURITY INTEREST Recorded Dec 23, 2010
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
To: LYONDELLBASELL FLAVORS & FRAGRANCES, LLC
Reel/Frame 025563/0798 →
RELEASE OF SECURITY INTEREST Recorded Dec 23, 2010
From: DEUTSCHE BANK TRUST COMPANY AMERICAS, AS COLLATERAL AGENT
To: LYONDELLBASELL FLAVORS & FRAGRANCES, LLC
Reel/Frame 025563/0397 →
SECURITY AGREEMENT Recorded May 19, 2010
From: LYONDELLBASELL FLAVORS & FRAGRANCES, LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 024402/0727 →
SECURITY AGREEMENT Recorded May 18, 2010
From: LYONDELLBASELL FLAVORS & FRAGRANCES, LLC
To: CITIBANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 024397/0898 →
SECURITY AGREEMENT Recorded May 7, 2010
From: LYONDELLBASELL FLAVORS & FRAGRANCES, LLC
To: UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT
Reel/Frame 024351/0040 →
SECURITY AGREEMENT Recorded May 6, 2010
From: LYONDELLBASELL FLAVORS & FRAGRANCES, LLC
To: DEUTSCHE BANK TRUST COMPANY AMERICAS, AS COLLATERAL AGENT
Reel/Frame 024342/0135 →