IP Library Granted Patent US 8,431,721
Granted Patent B2
US 8,431,721 · App. 13/164,477 · Granted Apr 30, 2013

Oxygen scavenging molecules, articles containing same, and methods of their use

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Quick Facts
Patent No.
US 8,431,721
App. No.
13/164,477
Granted
Apr 30, 2013
Kind
B2
Abstract

The invention relates to compounds of the structure of formula I and II: where X is selected from the group consisting of O, S and NH; Y, A and B are independently selected from the group consisting of N and CH; D, E and F are independently selected from the group consisting of CH, N, O and S; the symbol represents a single or a double bond; and R 1 , R 2 and R 3 are independently selected from the group consisting of H, electron withdrawing groups and electron releasing groups. In other embodiments, the compounds are used as oxygen scavengers and in barrier compositions and articles.

Claims (6)

1. A compound having the Formula:

2. The compound according to claim 1 , having the formula

3. The compound according to claim 1 , having the formula

4. The compound according to claim 1 , having the formula

5. The compound according to claim 1 , having the formula

6. The compound according to claim 1 , having the formula

Assignments (5)
SECURITY INTEREST Recorded Oct 12, 2017
From: PLASTIPAK PACKAGING, INC.
To: WELLS FARGO BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 044204/0547 →
RELEASE OF SECURITY INTEREST Recorded Oct 6, 2017
From: BLACK DIAMOND COMMERCIAL FINANCE, L.L.C.
To: CONSTAR INTERNATIONAL HOLDINGS LLC; CONSTAR GROUP HOLDINGS, INC.; CONSTAR GROUP, INC.; CONSTAR, INC.; CONSTAR FOREIGN HOLDINGS, INC.; CONSTAR INTERNATIONAL LLC; DT, INC.; BFF INC.
Reel/Frame 044142/0202 →
RELEASE OF SECURITY INTEREST Recorded Oct 6, 2017
From: WELLS FARGO CAPITAL FINANCE, LLC
To: CONSTAR INTERNATIONAL LLC; CONSTAR GROUP HOLDINGS, INC.; CONSTAR INTERNATIONAL HOLDINGS LLC; CONSTAR FOREIGN HOLDINGS, INC.; CONSTAR GROUP, INC.; BFF INC.; DT, INC.
Reel/Frame 044142/0428 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 5, 2014
From: CONSTAR INTERNATIONAL HOLDINS LLC; CONSTAR INTERNATIONAL LLC; CONSTAR INTERNATIONAL INC.; CONSTAR GROUP, INC.; CONSTAR GROUP HOLDINGS, INC.; CONSTAR INC.; CONSTAR INTERMEDIATE HOLDINGS, INC.; BFF INC.; DT INC.
To: PLASTIPAK PACKAGING, INC.
Reel/Frame 032389/0135 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 17, 2011
From: DESHPANDE, GIRISH NILKANTH; WEIPERT, PAUL DAVID; ENSLEY, MICHAEL W.
To: CONSTAR INTERNATIONAL LLC
Reel/Frame 026766/0227 →