IP Library › Granted Patent US 9,181,414
Granted Patent B2
US 9,181,414 · App. 12/945,351 · Granted Nov 10, 2015

Oxygen scavengers, compositions comprising the scavengers, and articles made from the compositions

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Quick Facts
Patent No.
US 9,181,414
App. No.
12/945,351
Granted
Nov 10, 2015
Kind
B2
Abstract

The present disclosure relates to oxygen scavenging molecules, compositions comprising the molecules, and articles made from the compositions.

Claims (16)

1. A melt-blended polymer composition comprising:

a) a thermoplastic polymer;

b) a transition metal in a positive oxidation state, the metal present in an amount of from about 10 ppm to about 400 ppm; and

c) a compound having the formula:

wherein R 1 is chosen from:

i) —CH 3 ;

ii) —CHO; or

iii) a combination thereof; and

the index n is equal to 1 or 2.

2. The polymer composition according to claim 1 , comprising from about 30 ppm to about 150 ppm of a transition metal.

3. The polymer composition according to claim 1 , wherein the thermoplastic polymer is a polyester homopolymer or polyester copolymer.

4. The polymer composition according to claim 1 , wherein the thermoplastic polymer comprises polyethylene terephthalate or a copolymer thereof.

5. The polymer composition according to claim 1 , wherein the compound comprises from about 1% to about 10% by weight of the composition.

6. The polymer composition according to claim 1 , wherein the compound comprises from about 1% to about 5% by weight of the composition.

7. The polymer composition according to claim 1 , wherein the compound comprises from about 1% to about 3% by weight of the composition.

8. The polymer composition according to claim 1 , further comprising a colorant.

Assignments (14)
SECURITY INTEREST Recorded Dec 22, 2025
From: PLASTIPAK PACKAGING, INC.
To: WELLS FARGO BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 074028/0732 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 20, 2017
From: DESHPANDE, GIRISH N.
To: PLASTIPAK PACKAGING, INC.
Reel/Frame 044917/0382 →
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: 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 →
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 →
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 →
CORRECTIVE ASSIGNMENT TO CORRECT THE NAME OF THE RECEIVING PARTY FROM "CONSTAR INTERNATIONAL L.L.C." TO "CONSTAR INTERNATIONAL LLC" PREVIOUSLY RECORDED ON REEL 026479 FRAME 0078. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME. Recorded Jun 28, 2011
From: CONSTAR INTERNATIONAL INC.
To: CONSTAR INTERNATIONAL LLC
Reel/Frame 026515/0141 →
ROLL-OVER PATENT SECURITY AGREEMENT Recorded Jun 23, 2011
From: CONSTAR GROUP, INC.; CONSTAR INTERNATIONAL LLC; CONSTAR, INC.; BFF INC.; DT INC.; CONSTAR FOREIGN HOLDINGS, INC.
To: BLACK DIAMOND COMMERCIAL FINANCE L.L.C.
Reel/Frame 026498/0338 →
SECURITY AGREEMENT Recorded Jun 23, 2011
From: CONSTAR INTERNATIONAL LLC
To: WELLS FARGO CAPITAL FINANCE, LLC
Reel/Frame 026481/0858 →
SHAREHOLDER PATENT SECURITY AGREEMENT Recorded Jun 23, 2011
From: CONSTAR GROUP, INC.; CONSTAR INTERNATIONAL LLC; CONSTAR, INC.; BFF INC.; DT, INC.; CONSTAR FOREIGN HOLDINGS, INC.
To: BLACK DIAMOND COMMERCIAL FINANCE, L.L.C.
Reel/Frame 026498/0368 →
CHANGE OF NAME Recorded Jun 22, 2011
From: CONSTAR INTERNATIONAL INC.
To: CONSTAR INTERNATIONAL L.L.C.
Reel/Frame 026479/0078 →
RELEASE OF SECURITY INTEREST Recorded Jun 22, 2011
From: BLACK DIAMOND COMMERCIAL FINANCE, L.L.C.
To: CONSTAR INTERNATIONAL, INC.
Reel/Frame 026478/0545 →
SECURITY AGREEMENT Recorded Feb 17, 2011
From: CONSTAR INTERNATIONAL, INC.
To: BLACK DIAMOND COMMERCIAL FINANCE, L.L.C.
Reel/Frame 025824/0114 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 26, 2011
From: DESHPANDE, GIRISH N.
To: CONSTAR INTERNATIONAL, INC.
Reel/Frame 025702/0495 →