US2005268925A1PendingUtilityA1

Application of mesoporous molecular sieves as selective smoke filtration additives

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Assignee: BROWN & WILLIAMSON TOBACCO CORPPriority: Jun 3, 2004Filed: Jun 3, 2004Published: Dec 8, 2005
Est. expiryJun 3, 2024(expired)· nominal 20-yr term from priority
Inventors:Rodney D. SchluterLamar Perry
A24D 3/166
38
PatentIndex Score
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Cited by
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Claims

Abstract

A smoking article includes a filter element having MCM-41 as a mesoporous molecular sieve. Also, a smokable article includes a smokable material and a wrapping paper having MCM-41 as the mesoporous molecular sieve. The mesoporous molecular sieve may be used in combination with charcoal or impregnated with copper oxide to further enhance filtration.

Claims

exact text as granted — not AI-modified
1 . A smoking article, comprising: 
 a smokable material circumscribed with a wrapping material to form a smokable rod; and,    an axially aligned filter element, wherein said filter element includes a mesoporous molecular sieve.    
     
     
         2 . The article of  claim 1 , wherein said mesoporous molecular sieve is disposed within said filter element.  
     
     
         3 . The article of  claim 1 , wherein said filter element includes a plurality of filter cavities, wherein one or more of said filter cavities includes a mesoporous molecular sieve.  
     
     
         4 . The article of  claim 1 , wherein said mesoporous molecular sieve is MCM-41.  
     
     
         5 . The article of  claim 1 , wherein said mesoporous molecular sieve is a surfactant templated silica gel having an organized hexagonal array of uniform pores.  
     
     
         6 . The article of  claim 5 , wherein said uniform pores have diameters of from about 15 Å to about 100 Å.  
     
     
         7 . A smoking article, comprising: 
 a smokable material circumscribed with a wrapping material to form a smokable rod; and,    an axially aligned filter element, wherein said smokable material includes a mesoporous molecular sieve, said mesoporous molecular sieve being disposed within said smokable rod.    
     
     
         8 . The article of  claim 7 , wherein said wrapping material is coated with said mesoporous molecular sieve.  
     
     
         9 . The article of  claim 7 , wherein said mesoporous molecular sieve is MCM-41.  
     
     
         10 . The article of  claim 7 , wherein said mesoporous molecular sieve is a surfactant templated silica gel having an organized hexagonal array of uniform pores.  
     
     
         11 . The article of  claim 10 , wherein said uniform pores have diameters of from about 15 Å to about 100 Å.  
     
     
         12 . A smoking article, comprising: 
 a smokable material circumscribed with a wrapping material to form a smokable rod; and,    an axially aligned filter element, wherein said smokable material, said wrapping material, and    said filter element include a mesoporous molecular sieve, said mesoporous molecular sieve being disposed within said smokable material and said filter element and coated on said wrapping material.    
     
     
         13 . The article of  claim 12 , wherein said mesoporous molecular sieve is MCM-41.  
     
     
         14 . The article of  claim 12 , wherein said mesoporous molecular sieve is a surfactant templated silica gel having an organized hexagonal array of uniform pores  
     
     
         15 . The article of  claim 14 , wherein said uniform pores have diameters of from about 15 Å to about 100 Å.  
     
     
         16 . A cigarette, comprising: 
 a tobacco rod with a filter element attached thereto; and    a mesoporous molecular sieve.    
     
     
         17 . The cigarette of  claim 16 , wherein said mesoporous molecular sieve is disposed within said filter element.  
     
     
         18 . The cigarette of  claim 16 , wherein said filter element includes a plurality of filter cavities.  
     
     
         19 . The cigarette of  claim 18 , wherein one or more of said filter cavities includes said mesoporous molecular sieve.  
     
     
         20 . The cigarette of  claim 16 , wherein said filter element is attached in axial alignment with a tobacco-filled smokable rod, said smokable rod including said mesoporous molecular sieve disposed therein.  
     
     
         21 . The cigarette of  claim 20 , wherein said filter element and said smokable rod are circumscribed with a wrapping paper, said wrapping paper coated with said mesoporous molecular sieve.  
     
     
         22 . The cigarette of  claim 16 , wherein said mesoporous molecular sieve is MCM- 41 .  
     
     
         23 . The cigarette of  claim 16 , wherein said mesoporous molecular sieve is a surfactant templated silica gel having an organized hexagonal array of uniform pores.  
     
     
         24 . The cigarette of  claim 23 , wherein said uniform pores have diameters from about 15 Å to about 100 Å.  
     
     
         25 . A smoking article, comprising: 
 a smokable material circumscribed with a wrapping material to form a smokable rod; and,    an axially aligned filter element,    wherein said smoking article includes a mesoporous molecular sieve and a plurality of additives.    
     
     
         26 . The article of  claim 25 , wherein said mesoporous molecular sieve and said additives are disposed within said smokable material.  
     
     
         27 . The article of  claim 25 , wherein said mesoporous molecular sieve and said additives are disposed within said filter element.  
     
     
         28 . The article of  claim 25 , wherein said mesoporous molecular sieve and said additives are disposed within said smokable material and said filter element.  
     
     
         29 . The article of  claim 25 , wherein said filter element includes a plurality of filter cavities, and wherein one or more of said filter cavities includes said mesoporous molecular sieve and said additives.  
     
     
         30 . The article of  claim 25 , wherein said mesoporous molecular sieve is MCM-41.  
     
     
         31 . The article of  claim 25 , wherein said mesoporous molecular sieve is a surfactant templated silica gel having an organized array of uniform pores.  
     
     
         32 . The article of  claim 31 , wherein said uniform pores have diameters from about 15 Å to about 100 Å.  
     
     
         33 . The article of  claim 25 , wherein one of said additives is an activated carbon.  
     
     
         34 . The article of  claim 33 , wherein said activated carbon is a Sorbite.  
     
     
         35 . The article of  claim 25 , wherein one of said additives is an ion-exchange resin.  
     
     
         36 . A smoking article, comprising: 
 a smokable material circumscribed with a wrapping material to form a smokable rod; and,    an axially aligned filter element, wherein said smoking article includes a mesoporous molecular sieve impregnated with copper oxide.    
     
     
         37 . The article of  claim 36 , wherein said mesoporous molecular sieve impregnated with copper oxide is disposed within said smokable material.  
     
     
         38 . The article of  claim 36 , wherein said filter element includes said mesoporous molecular sieve impregnated with copper oxide disposed therein.  
     
     
         39 . The article of  claim 36 , wherein said filter element is comprised of a plurality of filter cavities, and wherein one or more of said filter cavities includes said mesoporous molecular sieve impregnated with copper oxide.  
     
     
         40 . The article of  claim 36 , wherein said mesoporous molecular sieve impregnated with copper oxide is disposed within said smokable material and said filter element.  
     
     
         41 . The article of  claim 36 , wherein said mesoporous molecular sieve is MCM-41.  
     
     
         42 . The article of  claim 36 , wherein said mesoporous molecular sieve is a surfactant templated silica gel having an organized array of uniform pores.  
     
     
         43 . The article of  claim 42 , wherein said uniform pores have diameters from about 15 Å to about 100 Å.  
     
     
         44 . A filter for a smoking article, comprising: 
 a filter element with a mesoporous molecular sieve; and    a plurality of additives disposed within said filter element.    
     
     
         45 . The filter of  claim 44 , wherein said mesoporous molecular sieve and said additives are disposed within said filter element.  
     
     
         46 . The filter of claim of  44 , including a plurality of filter cavities.  
     
     
         47 . The filter of  claim 46 , wherein at least one of said filter cavities includes a mesoporous molecular sieve and at least one of said filter cavities includes said additives.  
     
     
         48 . The filter of  claim 44 , wherein said mesoporous molecular sieve is MCM-41.  
     
     
         49 . The filter of  claim 44 , wherein said mesoporous molecular sieve is a surfactant templated silica gel having an organized array of uniform pores.  
     
     
         50 . The filter of  claim 49 , wherein said uniform pores have diameters from about 15 Å to about 100 Å 
     
     
         51 . The filter of  claim 44 , wherein one of said additives is an activated carbon.  
     
     
         52 . The filter of  claim 51 , wherein said activated carbon is a Sorbite.  
     
     
         53 . The filter of  claim 44 , wherein one of said additives is an ion-exchange resin.  
     
     
         54 . The filter of  claim 44 , wherein said mesoporous molecular sieve is impregnated with copper oxide.

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