US2006116456A1PendingUtilityA1

Composition with enhanced heat resistance property

47
Assignee: LIN THOMAS SPriority: Nov 30, 2004Filed: Nov 30, 2004Published: Jun 1, 2006
Est. expiryNov 30, 2024(expired)· nominal 20-yr term from priority
Inventors:Thomas S. LinJeffrey M. Cogen
C08K 5/25C08K 5/005C08K 5/20
47
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Claims

Abstract

Compositions including a polymer, a primary antioxidant, a secondary antioxidant, and a metal deactivator selected from at least one of 2,2′-oxamido bis[ethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and oxalyl bis(benzylidenehydrazide), are disclosed. The compositions can also include a light stabilizer. The compositions can be used to manufacture insulations for wire and cable. The compositions have improved long-term heat aging and also retain their color when exposed to heat. A method of making an insulation for a conductor, such as a wire or a cable, made from a composition is also provided.

Claims

exact text as granted — not AI-modified
1 . A composition comprising: 
 a. a polymer;    b. a metal deactivator selected from at least one of 2,2′-oxamido bis[ethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and oxalyl bis(benzylidenehydrazide);    c. a primary antioxidant; and    d. a secondary antioxidant.    
     
     
         2 . The composition of  claim 1 , wherein the primary antioxidant comprises a hindered phenol antioxidant.  
     
     
         3 . The composition of  claim 2 , wherein the hindered phenol antioxidant comprises pentaerythrityl-tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate].  
     
     
         4 . The composition of  claim 1 , wherein the secondary antioxidant comprises a thiosynergist.  
     
     
         5 . The composition of  claim 4 , wherein the thiosynergist comprises pentaerythritol tetrakis (B-laurylthiopropionate).  
     
     
         6 . The composition of  claim 1 , wherein the polymer comprises a polyolefin, a thermoplastic elastomer, a thermoplastic olefin, a thermoplastic vulcanizate, or a combination thereof.  
     
     
         7 . The composition of  claim 6 , wherein the polyolefin comprises polypropylene, polyethylene, polyisoprene, polybutadiene, ethylene vinyl acetate, ethylene ethyl acrylate and combinations thereof.  
     
     
         8 . The composition of  claim 1 , wherein the metal deactivator is included at about 0.05 to about 10 parts by weight per about 100 parts by weight of the polymer.  
     
     
         9 . The composition of  claim 1 , wherein the hindered phenol is included at about 0.05 to about 10 parts by weight per about 100 parts by weight of the polymer.  
     
     
         10 . The composition of  claim 1 , wherein the thiosynergist is included at about 0.05 to about 30 parts by weight per about 100 parts by weight of the polymer.  
     
     
         11 . The composition of  claim 1 , further comprising a light stabilizer that is included at about 0.05 to about 10 parts by weigh per about 100 parts by weight of the polymer.  
     
     
         12 . The composition of  claim 1 , further comprising a hindered amine light stabilizer.  
     
     
         13 . The composition of  claim 12 , wherein the light stabilizer comprises reaction products of 1,6-hexanediamine, N,N′-bis(2,2,6,6-tetramethyl-4-piperidinyl)-polymer with 2,4,6-trichloro-1,3,5-triazine with N-butyl-1-butanamine and N-butyl-2,2,6,6-tetramethyl-4-piperidinamine.  
     
     
         14 . The composition of  claim 1 , wherein the composition has improved heat aging when compared to compositions not including the metal deactivator when assessed by at least one of ISO 6722 or LV-112 heat aging method.  
     
     
         15 . The composition of  claim 14 , further comprising a cross-linking agent.  
     
     
         16 . A composition comprising: 
 a. a polymer;    b. a metal deactivator selected from at least one of 2,2′-oxamido bis[ethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and oxalyl bis(benzylidenehydrazide);    c. a primary antioxidant comprising a hindered phenol antioxidant; and    d. a secondary antioxidant comprising a thiosynergist.    
     
     
         17 . The composition of  claim 16 , further comprising a hindered amine light stabilizer.  
     
     
         18 . An insulation for a wire or a cable, the insulation comprising a composition comprising: 
 a. a polymer;    b. a metal deactivator selected from at least one of 2,2′-oxamido bis[ethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and oxalyl bis(benzylidenehydrazide);    c. a primary antioxidant; and    d. a secondary antioxidant.    
     
     
         19 . The insulation of  claim 18 , wherein the primary antioxidant comprises a hindered phenol antioxidant.  
     
     
         20 . The insulation of  claim 18 , wherein the hindered phenol comprises pentaerythrityl-tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate].  
     
     
         21 . The insulation of  claim 18 , wherein the secondary antioxidant comprises a thiosynergist.  
     
     
         22 . The insulation of  claim 21 , wherein the thiosynergist comprises pentaerythritol tetrakis (B-laurylthiopropionate).  
     
     
         23 . The insulation of  claim 18 , wherein the polymer comprises a polyolefin, a thermoplastic elastomer, a thermoplastic olefin, a thermoplastic vulcanizate, or a combination thereof.  
     
     
         24 . The insulation of  claim 23 , wherein the polyolefin comprises polypropylene, polyethylene, polyisoprene, polybutadiene, ethylene vinyl acetate, ethylene ethyl acrylate and combinations thereof.  
     
     
         25 . The insulation of  claim 18 , wherein the metal deactivator is included at about 0.05 to about 10 parts by weight per about 100 parts by weight of the polymer.  
     
     
         26 . The insulation of  claim 18 , wherein the hindered phenol is included at about 0.05 to about 10 parts by weight per about 100 parts by weight of the polymer.  
     
     
         27 . The insulation of  claim 18 , wherein the thiosynergist is included at about 0.05 to about 30 parts by weight per about 100 parts by weight of the polymer.  
     
     
         28 . The insulation of  claim 18 , further comprising a light stabilizer that is included at about 0.05 to about 10 parts by weight per about 100 parts by weight of the polymer.  
     
     
         29 . The insulation of  claim 18 , further comprising a hindered amine light stabilizer.  
     
     
         30 . The insulation of  claim 29 , wherein the light stabilizer comprises reaction products of 1,6-hexanediamine, N,N′-bis(2,2,6,6-tetramethyl-4-piperidinyl)-polymer with 2,4,6-trichloro-1,3,5-triazine with N-butyl-1-butanamine and N-butyl-2,2,6,6-tetramethyl-4-piperidinamine.  
     
     
         31 . The insulation of  claim 18 , wherein the polymer is crosslinked.  
     
     
         32 . The insulation of  claim 18 , wherein the composition has an improved property when subjected to heat aging when compared to compositions not including the metal deactivator when assessed by at least one of ISO 6722 or LV-112 heat aging method.  
     
     
         33 . The insulation of  claim 32 , further comprising a cross-linking agent.  
     
     
         34 . An insulation for a wire or a cable, the insulation comprising a composition comprising: 
 a. a polymer;    b. a metal deactivator selected from at least one of 2,2′-oxamido bis[ethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and oxalyl bis(benzylidenehydrazide);    c. a primary antioxidant comprising a hindered phenol antioxidant; and    d. a secondary antioxidant comprising a thiosynergist.    
     
     
         35 . The insulation of  claim 34 , further comprising a hindered amine light stabilizer.  
     
     
         36 . A method of making an insulation, the method comprising: 
 a. blending a polymer, a primary antioxidant, a secondary antioxidant, and a metal deactivator selected from at least one of 2,2′-oxamido bis[ethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and oxalyl bis(benzylidenehydrazide) to form a composition; and    b. forming the composition into a desired shape around a conductor.    
     
     
         37 . The method of  claim 36 , wherein the conductor comprises a wire or a cable.  
     
     
         38 . The method of  claim 36 , wherein the forming comprises extruding the composition.  
     
     
         39 . The method of  claim 36 , wherein the forming comprises molding the composition.  
     
     
         40 . The method of  claim 36 , further comprising crosslinking the composition.

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