Surface modified adsorbents and use thereof
First Claim
1. A smoking article comprising a surface-modified adsorbent comprising a reagent incorporated in a porous carrier, wherein the reagent comprises an analogue of 2-hydroxymethylpiperidine selected from the group consisting of 2-(2-piperidine)ethanol (2-PE), N-piperidineethanol (N-PE), 2-(4-piperidine)ethanol (4-PE), 3-hydroxypiperidine hydrochloride (3-HPH), 4-hydroxypiperidine (4-HP), 3-N-piperidinyl-1,2-propanediol (3-PDP), 2-amino-1-phenylethanol (2-APE), 2-(N-anilino)ethanol (2-AE), and S-(−
- )2-phenylglycinol (2-PG), in an amount effective to reduce constituents of mainstream tobacco smoke and ranging from 1 to 80% by weight of the adsorbent.
1 Assignment
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Accused Products
Abstract
A surface-modified adsorbent comprises a reagent on a porous carrier. Preferred porous carriers are adsorbent carbons such as activated carbon, silica gels, aluminas, polyester resins, zeolites or zeolite-like materials, and mixtures thereof. Preferred reagents are 2-hydroxymethylpiperidine (2-HMP) or a 2-HMP analogue. Surface modified adsorbents can be incorporated into cigarettes, preferably in an amount effective to reduce the concentration of one or more constituents of cigarette smoke.
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Citations
20 Claims
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1. A smoking article comprising a surface-modified adsorbent comprising a reagent incorporated in a porous carrier, wherein the reagent comprises an analogue of 2-hydroxymethylpiperidine selected from the group consisting of 2-(2-piperidine)ethanol (2-PE), N-piperidineethanol (N-PE), 2-(4-piperidine)ethanol (4-PE), 3-hydroxypiperidine hydrochloride (3-HPH), 4-hydroxypiperidine (4-HP), 3-N-piperidinyl-1,2-propanediol (3-PDP), 2-amino-1-phenylethanol (2-APE), 2-(N-anilino)ethanol (2-AE), and S-(−
- )2-phenylglycinol (2-PG), in an amount effective to reduce constituents of mainstream tobacco smoke and ranging from 1 to 80% by weight of the adsorbent.
- View Dependent Claims (2, 3, 4, 5, 6)
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7. A cigarette comprising a reagent incorporated in a porous carrier, wherein the reagent comprises an analogue of 2-hydroxymethylpiperidine (2-HMP) selected from the group consisting of 2-(2-piperidine)ethanol (2-PE), N-peridineethanol (N-PE), 2-(4-N-piperidine)ethanol (4-PE), 3-hydroxypiperidine hydrochloride (3-HPH), 4-hydroxyeridine (4-HP), 3-N-piperidinyl-1,2-propanediol (3-PDP), 2-amino-1-phenylethanol (2-APE), 2-(N-anilino)ethanol (2-AE), and S-(−
- )2-phenylqlycinol (2-PG), in an amount effective to reduce constituents of mainstream tobacco smoke and ranging from 1 to 80% by weight of the adsorbent.
- View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A cigarette filter including a surface-modified adsorbent, the surface modified adsorbent comprising a reagent incorporated in a porous carrier, wherein the reagent comprises an analogue of 2-hydroxymethylpiperidine selected from the group consisting of 2-(2-piperidine)ethanol (2-PE), N-piperidineethanol (N-PE), 2-(4-piperidine)ethanol (4-PE), 3-hydroxypiperidine hydrochloride (3-HPH), 4-hydroxypiperidine (4-HP), 3-N-piperidinyl-1,2-propanediol (3-PDP), 2-amino-1-phenlethanol (2-APE), 2-(N-anilino)ethanol (2-AE), and S-(−
- )2-phenylglycinol (2-PG), in an amount effective to reduce constituents of mainstream tobacco smoke and ranging from 1 to 80% by weight of the adsorbent.
- View Dependent Claims (15, 16, 17, 18, 19, 20)
Specification