US2013285277A1PendingUtilityA1

Oxygen Scavenging Compositions, Articles Containing Same, and Methods of Their Use

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Assignee: CONSTAR INT INCPriority: Apr 30, 2012Filed: Apr 30, 2013Published: Oct 31, 2013
Est. expiryApr 30, 2032(~5.8 yrs left)· nominal 20-yr term from priority
Inventors:Kirk BehrendtMatthew J. DauzvardisRichard Hoch
B29B 9/06C08J 3/226C08K 5/3417C08K 5/098C08J 3/203C08J 2367/02C08K 3/08B29B 9/12B65D 81/24C08L 67/03C08K 5/20C08K 3/22C08K 5/0008C08L 67/02B65D 81/266C08J 2467/02C08K 5/005B29B 9/16
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Claims

Abstract

The disclosure relates to transition metal compositions, methods of making the compositions, articles prepared from the compositions, and methods of making the articles. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A transition metal master batch composition comprising:
 (a) a polymer carrier; and   (b) a transition metal composition dispersed in the solid polymer carrier;   wherein the transition metal in the transition metal composition is present in an amount greater than about 30,000 ppm (by metal) based on the weight of the transition metal master batch composition.   
     
     
         2 . The composition of  claim 1 , wherein the polymer carrier comprises a polyester polymer. 
     
     
         3 . The composition of  claim 2 , wherein the polyester polymer is a polyalkyl terephthalate, or a copolymer thereof. 
     
     
         4 . The composition of  claim 2 , wherein the polyester polymer is polyethylene terephthalate, or a copolymer thereof. 
     
     
         5 . The composition of  claim 2 , wherein the polyester polymer is selected from polyethylene terephthalate, poly(dimethyl cyclohexane terephthalate), polytrimethylene terephthalate, polynaphthalate, or a copolymer thereof. 
     
     
         6 . The composition of  claim 1 , wherein the amount of the polymer carrier present in the transition metal master batch composition is from about 75 weight percent to about 85 weight percent. 
     
     
         7 . The composition of  claim 1 , wherein the transition metal comprises cobalt. 
     
     
         8 . The composition of  claim 7 , wherein the source of cobalt comprises a cobalt carboxylate or cobalt neodecanoate, or mixtures thereof. 
     
     
         9 . The composition of  claim 1 , wherein the transition metal composition is present in an amount greater than about 40,000 ppm (by metal) based on the weight of the transition metal master batch composition. 
     
     
         10 . A transition metal compact composition comprising:
 (a) an oxygen scavenger composition; and   (b) a transition metal master batch composition dispersed in the oxygen scavenger composition;   wherein the oxygen scavenger composition is present in an amount greater than about 85 weigh percent;   wherein the transition metal master batch composition comprises:
 (i) a polymer carrier; and 
 (ii) a transition metal composition dispersed in the solid polymer carrier;
 wherein the transition metal composition is present in an amount greater than about 30,000 ppm (by metal) based on the weight of the transition metal master batch composition. 
 
   
     
     
         11 . The composition of  claim 10 , wherein the oxygen scavenger composition comprises a compound represented by a formula: 
       
         
           
           
               
               
           
         
       
     
     
         12 . The composition of  claim 10 , wherein the oxygen scavenger composition comprises a compound represented by a formula: 
       
         
           
           
               
               
           
         
       
     
     
         13 . A method of making a transition metal master batch composition comprising the step of extruding a transition metal master batch composition, the composition comprising:
 (a) a polymer carrier; and   (b) a transition metal composition;   wherein the transition metal composition is present in an amount greater than about 30,000 ppm (by metal) based on the weight of the transition metal master batch composition.   
     
     
         14 . The method of  claim 13 , further comprising the step of milling the transition metal master batch composition following the step of extrusion. 
     
     
         15 . The method of  claim 14 , wherein the transition metal master batch composition is milled to a size less than about 1.0 mm screen size. 
     
     
         16 . The method of  claim 13 , wherein the polymer carrier comprises a polyester polymer. 
     
     
         17 . The method of  claim 16 , wherein the polyester polymer is polyethylene terephthalate, or a copolymer thereof. 
     
     
         18 . The method of  claim 13 , wherein the transition metal composition is present in an amount greater than about 40,000 ppm (by metal) based on the weight of the transition metal master batch composition. 
     
     
         19 . A method of making transition metal compacted pellets comprising the steps of:
 (1) extruding a transition metal master batch composition, the composition comprising:
 (a) a solid polymer carrier; and 
 (b) a transition metal composition; 
 wherein the transition metal composition is present in an amount greater than about 30,000 ppm (by metal) based on the weight of the transition metal master batch composition; 
   (2) processing the extrudate comprising the transition metal master batch composition to particulate form by milling or pulverization, wherein the particle size is less than about 5.0 mm screen size;   (3) preparing a homogeneous mixture comprising the particulate transition metal master batch composition and a powdered oxygen scavenger composition, wherein the powdered oxygen scavenger composition is present in an amount greater than about 85 weigh percent based on the combined weight of the particulate transition metal master batch composition and the powdered oxygen scavenger composition; and   (4) forming compacted single pellets from the homogeneous mixture comprising the particulate transition metal master batch composition and a powdered oxygen scavenger composition, thereby producing transition metal compacted pellets.   
     
     
         20 . The method of  claim 19 , wherein the oxygen scavenger composition comprises a compound represented by a formula: 
       
         
           
           
               
               
           
         
       
     
     
         21 . The method of  claim 19 , wherein the oxygen scavenger composition comprises a compound represented by a formula:

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