CN101043826A - Selective filtration of cigarette smoke using chitosan derivatives - Google Patents
Selective filtration of cigarette smoke using chitosan derivatives Download PDFInfo
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- CN101043826A CN101043826A CNA2005800208649A CN200580020864A CN101043826A CN 101043826 A CN101043826 A CN 101043826A CN A2005800208649 A CNA2005800208649 A CN A2005800208649A CN 200580020864 A CN200580020864 A CN 200580020864A CN 101043826 A CN101043826 A CN 101043826A
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- filter
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Filtering Materials (AREA)
Abstract
A smoking article filter having a porous resin with a high surface area to mass ratio comprised of a chitosan derivative. PreferedPreferred embodiments include chitosan cross-linked with glutaraldehyde and chitosan cross-linked with glyoxal. The chitosan derivative provides for the selective filtration of cigarette smoke, particularly for the removal of aldehydes, hydrogen cyanide, heavy metals and carbonyls.
Description
Cross reference to related application
This international patent application is the priority that a Paris Convention application and requirement apply on May 10th, 2004 and at present uncertain U.S. Patent Application Serial Number 10/842,165.
Invention field
The present invention relates to improvement about tobacco smog filte r.More specifically, the present invention relates to a kind ofly can from tobacco smoke, optionally remove the cigarette filter of undesirable component.
Background of invention
Material miscellaneous has been proposed in the prior art as tobacco smog filte r.The example of such filter material comprises cotton, paper, cellulose acetate and some composite.But many these filter materials are removing effectively the particulate in the tobacco smoke, tar and condensable component only.This area has been full of countless being used for and has removed the filtering technique of undesirable component and material and be used to cause the filtering technique and the material of other reactions during by filter bed or other reaction-ability mediums when described smog from smog.Have in the problem that filter ran into formerly along with using and the obstruction or the obstruction of consumption or cause the invalid of reactive filtering surface and material.
By effective a little to removing of particle phase component in the tobacco smoke such as the thread of acetate tow or paper or filter that fibrous material is made.Yet they are to some gas component in the vapor phase of tobacco smoke, and for example hydrogen cyanide, aldehyde, carbonyls (carbonyls), metal and removing of sulfide have seldom or do not have effect.Can and be absorbed on the suitable surface or by absorption and remove these volatile components by chemical reaction.
Some known materials as adsorbent and absorbent comprise activated carbon, porous mineral and ion exchange resin.The ion exchange resin that has been found that open structure is effective a little, but their diminishing efficiency during being fuming, the efficient of carbon and porous mineral also is the same.This may be because described material becomes saturated and, therefore lost efficacy gradually or may be owing to keep the release of the sorbing material that the thermal desorption of material causes.
Have been found that the uncle's amino that contains main ratio or the resin of quaternary ammonium group are not suitable for removing aldehyde from tobacco smoke.The shitosan that has been found that shitosan and have maximum number amino is not effective.In the problem that these materials ran into, there are them that the filter medium of the continuous smog stream of permission under low pressure difference or gradient is not provided.Have been found that the other problems that uses the selective filter media.For example, have been found that and use certain seed amino acid that for example glycine is effective to the aldehyde of removing in the tobacco smoke.Yet, can reduce the content of formaldehyde in the tobacco smoke though have been found that glycine, it is unsettled in the cigarette filter manufacture process.In addition, amino acid whose application causes the release at memory period ammonia stink.
Summary of the invention
Have been found that shitosan can be to have the physical attribute of filter medium and have the chemical constituent that can adsorb and absorb undesirable smoke components effectively by chemical modification, obtains superior performance during as cigarette filter.
Therefore, an object of the present invention is to provide the tobacco smoke filter element apparatus and, and more specifically, can optionally remove undesirable component for example hydrogen cyanide, aldehyde, metal and sulfide and the not relevant defective or the cigarette filter of shortcoming in the vapor phase of tobacco smoke with the prior art of formerly describing.
A further purpose provides a kind of cigarette and smoke filter that comprises the novelty of cross-linked chitosan porous resin.
An other purpose provides the cross-linked chitosan reactive explosive that has high surface/volume and have the reactive amino quantity of minimizing of the selectivity smog filtration that is used for the smog goods.
According to the present invention, one grow tobacco-smoke filter comprises a kind of undesirable volatility tobacco-smoke components that is used for, for example the adsorbent absorber of removing of hydrogen cyanide, aldehyde, carbonyls, metal and sulfide.Particularly, the present invention relates to filter compound with the mutually crosslinked shitosan of glutaraldehyde and with the especially effectively tobacco smoke of the mutually crosslinked shitosan of glyoxal.
Shitosan is by mutually crosslinked with glutaraldehyde and glyoxal, thereby be formed for the selective filter of smoke from cigarette, especially for undesirable smoke components for example aldehyde, hydrogen cyanide, carbonyls, sulfide and metal remove have the porous resin of high surface area to mass ratio.
Shitosan is from chitin, and a kind of a kind of linearity of deacetylated acquisition of the glycan of finding in the shell of shellfish is gathered glucosamine polymer.Chitin also is present in the insect and with less amount and is present in many other animal and plant tissues.Chitin is the 2-deoxidation, and the linear polymer of 2-acetyl-Glucosamine is similar on chemical constitution to cellulose.It is not dissolved in nearly all medium except that strong inorganic acid and this is a relative inertness because of described acetylizad amino.
Handled when deacetylated with highly basic when chitin, described product is the shitosan that each the glucose construction unit in described polymer contains a free amino group.It remains a kind of long-chain linear polymer but is the poly-many electrolytes of a kind of high response cationic at present.Its meeting and simple organic acid, for example formic acid, acetate, tartaric acid, citric acid etc. form salt, and dissolve in the dilute aqueous solution of these materials.Shitosan is nontoxic and biodegradable, and has been found that it is effective in many application, comprises chromatography, medicine conveying and cosmetics.
Can form the chitosan resin of porous by phase-inversion technologies.This is by being dissolved in a kind of The suitable solvent with sheet or powdery shitosan, for example in the aqueous acid, thereby then in moisture aqueous slkali cohesion form water-soluble bloated chitosan gel rubber bead and realize.This bead can be used glutaraldehyde cross-linking, and mutually crosslinked with glyoxal individually, thereby improves the mechanical strength of this bead and reduce the solubility of this bead.Thereby this moistening bead of freeze drying obtains a kind of crosslinked resin of porous then.Also can realize drying by vacuum or air drying.
Also can use the thermic phase detachment technique to prepare porous resin.This is by being dissolved in a kind of The suitable solvent with sheet or powdery shitosan, in for example moisture acetate, then this solution is joined a kind of non-solvent, for example in the methyl alcohol, and resulting solution is cooled to produce the below freezing of chitosan solution that freezes bead realizes.These beads can be by with alkali neutralization then, thereby and by with glutaraldehyde and individually with the mutually crosslinked final character that changes described chitosan resin of glyoxal.Thereby resulting bead freeze drying can be obtained a kind of crosslinked chitosan resin of porous then.Also can be by vacuum and by the dry drying that realizes of air.
The reactive amino that has the quantity of minimizing by the crosslinked resin of described two kinds of methods preparation.The reactive amino of the quantity of this minimizing is the result with glutaraldehyde or glyoxal cross-linking reaction.Be surprised to find that described invention, had the reactive amino of the quantity of minimizing, removed hydrogen cyanide and formaldehyde is optionally from tobacco smoke.The crosslinked chitosan resin that also has been surprised to find that the reactive amino of described quantity with minimizing shows the bigger deactivation that optionally removes, and compares with the prior art of the reactive amino of wherein using maximum quantity.
Porous resin of the present invention can be incorporated in the cigarette in many ways.Described resin can be positioned between the filtrate section, and wherein these filtrate sections can be made up of fibrous, thread and paper shape material.It is intrafascicular that described resin can also be dispersed in whole filtrate.Alternatively, described resin can be assigned within the filtering layer in the filtrate section and described resin by along described filtering layer packing.The part that described resin also can be incorporated into described cigarette filter for example filter tip paper, shaping paper insert, plug, space or and even flow freely sleeve pipe.In addition, described resin can be incorporated in the cigarette filter paper, is used filter tip paper to be connected to that described cigarette props up or even is incorporated in the cavity in described filter.
Detailed description of preferred embodiments
Non-limiting mode provides embodiments of the invention in the mode of example descending.These embodiment comprise two kinds of distinct methods of preparation shitosan bead and several distinct methods of crosslinked described shitosan bead.Below all embodiment obtain having the cross linked porous chitosan resin bead of the reactive amino quantity of minimizing.
Embodiment
Example I
Synthesized the porous chitosan resin according to phase-inversion technologies.This prepares 7% chitosan solution and realizes by about 20 gram shitosan fragments (utility grade) are dissolved in 3.5% acetate.When the interpolation of described shitosan was finished, the viscosity of described mixture and degree of gelation increased.Further dilute with acetate, obtain having the solution of about 3% shitosan flocculus.This provides a kind of chitosan solution with viscosity more easy to control.The total amount that is used to dissolve the acetate of described shitosan fragment is approximately 665 milliliters.Filter described solution then, thereby separate all undissolved materials.Thereby the precipitating bath that then this chitosan solution is added dropwise to 2M NaOH obtains water-soluble bloated gel bead.Filter described gel bead then and spend deionised water to neutral, the pH value of described washings is approximately 7.
Realize the heterogeneous crosslinked of described shitosan bead by the described bead a few hours of in 2.5% about 1 liter glutaraldehyde aqueous solution, suspending then.After crosslinked, thereby filter described bead then and remove all unnecessary glutaraldehydes with warm deionized water washing.Then, the described bead of freeze drying and obtain the glutaraldehyde cross-linking chitosan resin bead of porous.The measurement result of the BET specific area of described resin is approximately 120m
2/ g.Thereby mill then and screen described bead reservation and have about 16-70 purpose particle.The surface area of the resin of being milled the analysis showed that aspect surface area and does not significantly change.The measurement result of the BET specific area of described screened sample is approximately 117m
2/ g.
Example II:
Synthesized the porous chitosan resin according to the phase-inversion technologies among the embodiment 1.In the present embodiment, realize the heterogeneous crosslinked of described shitosan bead by the described bead a few hours of in 2.5% glyoxal aqueous solution, suspending.After crosslinked, thereby filter described bead and remove all unnecessary glyoxals with warm deionized water washing.The described bead of freeze drying then obtains the crosslinked chitosan resin bead of glyoxal of porous.
EXAMPLE III: prepare the porous chitosan resin according to the thermic phase disengagement method.By shitosan powder (Vansen chemicals; 92% takes off acetyl) dissolving in 3.5% acetate prepares 4% chitosan solution.Preparation in 20: 80 methanol/water solution NaOH (2 moles of molar) precipitating bath and it is cooled to 0 ℃.Under gentle agitation, described chitosan solution is added dropwise to described precipitating bath then.Soon, shitosan precipitates after described solution is added into described precipitating bath.The precipitating bath that allows then to have described shitosan precipitation is returned to room temperature.Filter resulting bead and spend deionised water and become neutrality, have and be approximately 7 pH value up to described washings.
Realize the heterogeneous crosslinked of described shitosan bead by about 396 grams that in 2.5% about 1980 milliliters aqueous glutaraldehyde, suspend moistening bead a few hours then.After crosslinked, thereby filter described bead and remove all unnecessary glutaraldehydes with cold two kinds of deionized water washings with warm.With the described bead of postlyophilization, obtain the glutaraldehyde cross-linking chitosan resin bead of porous.Mill then and screen bead to about 16-70 order.The measurement result of the BET specific area of described resin is approximately 210m
2/ g.
EXAMPLE IV: prepare the porous chitosan resin according to the thermic phase disengagement method in the EXAMPLE III.In the present embodiment, realize the heterogeneous crosslinked of described shitosan bead by about 261 grams that in about 1300 milliliter of 2.5% aqueous glyoxal solution, suspend moistening bead a few hours.After crosslinked, thereby filter described bead and remove all unnecessary glyoxals with cold two kinds of deionized water washings with warm.With postlyophilization, obtain the glyoxal crosslinked chitosan resin bead of porous.Mill then and screen described bead to about 16-70 order.The measurement result of the BET specific area of described crosslinked resin is approximately 145m
2/ g.
EXAMPLE IV: prepare the porous chitosan resin according to the thermic phase disengagement method in the EXAMPLE III.In the present embodiment, realize the heterogeneous crosslinked of described shitosan bead by the described bead a few hours of in the solution of glutaraldehyde and ethanol, suspending.After crosslinked, thereby filter described bead and remove all unnecessary glutaraldehydes with the ethanol washing.Vacuum drying subsequently obtains the glutaraldehyde cross-linking chitosan resin bead of porous.
Example VI:
Prepare the porous chitosan resin according to the thermic phase disengagement method in the EXAMPLE III.In the present embodiment, realize the heterogeneous crosslinked of described shitosan bead by the described bead a few hours of in the solution of glutaraldehyde and water, suspending.After crosslinked, thereby filter described bead and remove all unnecessary glutaraldehydes with the ethanol washing.Vacuum drying subsequently obtains the glutaraldehyde cross-linking chitosan resin bead of porous.
Although these embodiment have stipulated the amount or the concentration of the raw material that uses in the process of implementing several embodiments of the present invention, can use large-scale material concentration and amount to implement the present invention.For example, described cross-linking agent solution can be in the concentration range of about 0.1%-about 50%, described chitosan solution can be in the concentration range of about 0.1%-about 20%, described acetic acid solution can be in the scope of about 0.1%-about 10%, and described aqueous slkali can be in the scope of the about about 5M NaOH of 1-.In addition, the time range that is used for cross-linking reaction can be from about 1 hour to about 24 hours at the most.
Application Example
Cigarette generally comprises two parts, contains the part of tobacco (tobacco-containing), and it is called as cigarette sometimes or cigarette props up, and the filter part that can be called as filter tip.By removing the filter tip that on cigarette, exists, thereby and replace the cigarette sample that preparation has cavity filters with the filter tip that has the middle cavity that stays in the cellulose acetate segment of the tobacco end of described filter tip and cellulose acetate segment at the mouth end of described filter tip by the manufacturing of standard production technology.Prepare semolina (semolina by using the 50mg sample to be loaded in the middle cavity of described filter tip, a kind of inert fill material), by phase-inversion technologies and the chitosan resin (example I) mutually crosslinked and synthetic with glutaraldehyde, by thermic phase disengagement method and the chitosan resin (EXAMPLE III) mutually crosslinked and synthetic with glutaraldehyde, by thermic phase disengagement method and the chitosan resin (EXAMPLE IV) mutually crosslinked and synthetic with glyoxal, by thermic phase disengagement method and mutually crosslinked with glutaraldehyde in ethanol, wash also vacuum drying and synthetic chitosan resin (EXAMPLE V) with ethanol, and by thermic phase disengagement method and mutually crosslinked with glutaraldehyde in water, with ethanol washing and vacuum drying and the sample sets of synthetic chitosan resin (example VI).For each sample, thereby this useful load is the consistent comparable result that provides.Resin carrying capacity in the filter of the present invention can be at about 10mg to the scope of about 200mg.Thereby select the pressure of each sample to descend with the minimize variations of smoke delivery.
Several tests are implemented cigarette filter of the present invention is removed undesirable component from tobacco smoke the ability of measuring, and compare with conventional equipment.Described experimental measurement in be fuming the fully amount of undesirable component of from described mainstream smoke, being removed of back of cigarette.Following data group profile and described contrast raw material, semolina is compared, for each preferred embodiment, the effect that in the filter process of the volatile component of tobacco smoke, is obtained.Analysis result for described vapor phase and full smog analysis report is as shown in the table.Percentage reduce the amount be meant the analyte that in the vapor phase of cigarette or full mainstream smoke, records and the vapor phase of cigarette with the filter that contains chitosan resin with the filter that contains semolina or the amount of the analyte that records in the mainstream smoke entirely between poor, represent with %.
Vapor phase smog to the chitosan resin by phase-inversion technologies [example I] preparation is analyzed
Percentage reduces (%)
With the mutually crosslinked shitosan of glutaraldehyde
The analyte example I
Hydrogen cyanide 49
Acetaldehyde 10
Acetonitrile 11
Methacrylaldehyde 15
Propionic aldehyde 11
Acetone 7
Butanone+butyraldehyde 16
Crotonaldehyde 13
Full smog hydrogen cyanide to the chitosan resin by phase-inversion technologies [embodiment 1] preparation is analyzed
Percentage reduces (%)
With the mutually crosslinked shitosan of glutaraldehyde
The analyte example I
Hydrogen cyanide 41
Full smog carbonyls to the chitosan resin by phase-inversion technologies [embodiment 1] preparation is analyzed
Percentage reduces (%)
With the mutually crosslinked shitosan of glutaraldehyde
Example I
Formaldehyde 36
Acetaldehyde 13
Acetone 5
Methacrylaldehyde 11
Propionic aldehyde 16
Crotonaldehyde 9
Butyraldehyde 17
Vapor phase smog to the chitosan resin of [EXAMPLE III-IV] preparation that is separated by thermic is analyzed
Percentage reduces (%)
With mutually crosslinked shitosan and the mutually crosslinked shitosan of glyoxal of glutaraldehyde
The EXAMPLE III EXAMPLE IV
Acetaldehyde 13 31
Acetone 21 30
Acetonitrile 18 26
Methacrylaldehyde 29 36
Acrylonitrile 21 29
Crotonaldehyde 7 42
Hydrogen cyanide 60 45
Butanone 21 29
Propionic aldehyde 23 36
Isobutylaldehyde 27 35
Hutanal 27 40
Full smog hydrogen cyanide to the chitosan resin of [EXAMPLE III-IV] preparation that is separated by thermic is analyzed
Percentage reduces (%)
With mutually crosslinked shitosan and the mutually crosslinked shitosan of glyoxal of glutaraldehyde
The EXAMPLE III EXAMPLE IV
Hydrogen cyanide 54 29
Full smog carbonyls to the chitosan resin of [EXAMPLE III-IV] preparation that is separated by thermic is analyzed
Percentage reduces (%)
With mutually crosslinked shitosan and the mutually crosslinked shitosan of glyoxal of glutaraldehyde
The EXAMPLE III EXAMPLE IV
Acetaldehyde 12
Acetone 50
Methacrylaldehyde 10 3
Butyraldehyde 14 8
Crotonaldehyde 20 9
Formaldehyde 50 46
Propionic aldehyde 17 19
The full smog trace metal analysis of chitosan resin to [EXAMPLE III-IV] preparation that is separated by thermic
Percentage reduces (%)
With mutually crosslinked shitosan and the mutually crosslinked shitosan of glyoxal of glutaraldehyde
The EXAMPLE III EXAMPLE IV
Cadmium 32 38
Vapor phase smog to the chitosan resin of [EXAMPLE V] preparation that is separated by thermic is analyzed
Percentage reduces (%)
With the mutually crosslinked shitosan of glutaraldehyde
EXAMPLE V
Acetaldehyde 9
Acetone 6
Acetonitrile 3
Methacrylaldehyde 13
Crotonaldehyde 7
Hydrogen cyanide 36
Butanone 6
Propionic aldehyde 11
Isobutylaldehyde 9
Hutanal 10
Full smog hydrogen cyanide to the chitosan resin of [EXAMPLE V] preparation that is separated by thermic is analyzed
Percentage reduces (%)
With the mutually crosslinked shitosan of glutaraldehyde
EXAMPLE V
Hydrogen cyanide 27
Full smog carbonyls to the chitosan resin of [EXAMPLE V] preparation that is separated by thermic is analyzed
Percentage reduces (%)
With the mutually crosslinked shitosan of glutaraldehyde
EXAMPLE V
Acetonitrile 3
Acetaldehyde 27
Acetone 24
Methacrylaldehyde 32
Butyraldehyde 41
Crotonaldehyde 30
Formaldehyde 58
Propionic aldehyde 33
The full smog trace metal analysis of chitosan resin to [EXAMPLE V] preparation that is separated by thermic
Percentage reduces (%)
With the mutually crosslinked shitosan of glutaraldehyde
EXAMPLE V
Cadmium 38
Vapor phase smog to the chitosan resin of [example VI] preparation that is separated by thermic is analyzed
Percentage reduces (%)
With the mutually crosslinked shitosan of glutaraldehyde
Example VI
Acetaldehyde 3
Acetone 4
Methacrylaldehyde 9
Crotonaldehyde 11
Hydrogen cyanide 30
Butanone 11
Propionic aldehyde 6
Isobutylaldehyde 7
Hutanal 11
Full smog hydrogen cyanide to the chitosan resin of [example VI] preparation that is separated by thermic is analyzed
Percentage reduces (%)
With the mutually crosslinked shitosan of glutaraldehyde
Example VI
Hydrogen cyanide 30
Full smog carbonyls to the chitosan resin of [example VI] preparation that is separated by thermic is analyzed
Percentage reduces (%)
With the mutually crosslinked shitosan of glutaraldehyde
Example VI
Acetaldehyde 0
Acetone 0
Methacrylaldehyde 0
Butanone 1
Butyraldehyde 14
Crotonaldehyde 36
Formaldehyde 37
Propionic aldehyde 0
The full smog trace metal analysis of chitosan resin to [example VI] preparation that is separated by thermic
Percentage reduces (%)
With the mutually crosslinked shitosan of glutaraldehyde
Example VI
Cadmium 26
Described data show surprisingly, and it is optionally that the crosslinked chitosan resin described in the present invention is compared with inertia semolina tester aspect aldehyde in removing smoke from cigarette and the hydrogen cyanide.The chitosan resin of described glutaraldehyde cross-linking comparison product has in the same old way reduced the vapor phase conveying (EXAMPLE III) of 60% hydrogen cyanide.In independent test, the chitosan particle of noncrosslinking grinding shows carries the nothing influence to described vapor phase hydrogen cyanide.The chitosan resin of described glutaraldehyde cross-linking reduced also that whole smog hydrogen cyanide carry 54%, and the whole smog formaldehyde of main flow carry and have reduced 50%, compare (EXAMPLE III) with described control sample.
Although described the present invention with reference to preferred embodiment, will be understood that adoptable variation and revise is conspicuous for those skilled in the art.Such variation and modification are considered to be within the field of the invention and the scope, limit as the claims that invest this.
Claims (34)
1. tobacco smoke filter, it comprises the chitosan resin that has with the mutually crosslinked shitosan of the component that is selected from glutaraldehyde and glyoxal.
2. filter according to claim 1, wherein said resin is mutually crosslinked with glutaraldehyde.
3. filter according to claim 1, wherein said resin is mutually crosslinked with glyoxal.
4. it is that about 17 orders are to about 70 purpose particle form that filter according to claim 1, wherein said resin are particle size range.
5. cigarette filter according to claim 1, wherein said resin contain the particle of having milled.
6. filter according to claim 1, wherein said tobacco smog filte r have the described resin that exists with the about 200mg scope of about 10mg-.
7. filter according to claim 1, wherein said resin are particle form and are positioned between the filtrate section, and described filtrate section has the material that is selected from fiber, silk, paper and combination thereof.
8. it is intrafascicular that filter according to claim 1, wherein said resin are particle form and are dispersed in filtrate.
9. smog filter method, it comprises provides a kind of smoking article filter, it has and the mutually crosslinked chitosan resin of the component that is selected from glutaraldehyde and glyoxal, and with smog by described filter.
10. the method for a fluid flow filtration, it comprises that providing a kind of has the filter course of crosslinked chitosan resin and will contain fluid with the component of described resin reaction by described filter course in described layer.
11., wherein saidly provide step to comprise described chitosan resin is packaged in the described layer as desired method in claims 10.
12. as claims 10 desired methods, wherein said resin is the particle form with about 16 purpose sizes.
13. as claims 10 desired methods, the wherein said step that provides further comprises along the described crosslinked chitosan resin of described layer packing.
14. as the desired method of claim 10, wherein said fluid is the thermal decomposition product that smoke from cigarette and described component contain cigarette ingredient.
15. a method of removing the smoke from cigarette thermal decomposition product of cigarette ingredient, it comprises provides a kind of filtration zone with crosslinked chitosan resin, and described resin is positioned in whole described zone, and described thermal decomposition product is passed through described filtration zone.
16. a tobacco smoke filter medium, it obtains by following steps:
Shitosan is dissolved in has about 0.1% to first solution of the acetate of about 10% scope, form and have about 0.1% second solution to the shitosan of about 20% scope;
Filter described second solution;
Described second drips of solution is added to precipitating bath, and wherein said precipitating bath has about 1 mole of NaOH to about 5 molar range, forms the gel bead;
Towards Xian Suoshu gel bead;
Described gel bead is suspended in the crosslinker solution about 1 hour to about 24 hours and forms crosslinked bead, wherein said crosslinker solution has about 0.1% to about 50% the cross-linking compounds that is selected from glutaraldehyde and glyoxal;
Towards the crosslinked bead of Xian Suoshu; And
Dry described crosslinked bead and form the chitosan crosslinked resin bead of porous.
17. the described smog filter medium of claim 16, wherein said cross-linking compounds is a glutaraldehyde.
18. the described smog filter medium of claim 16, wherein said cross-linking compounds is a glyoxal.
19. a tobacco smoke filter medium, it obtains by following steps:
Shitosan is dissolved in has about 0.1% to the acetic acid solution of about 10% scope acetate, form and have about 0.1% chitosan solution to about 20% scope shitosan;
Precipitating bath is cooled to below the surrounding room temperature, and wherein said precipitating bath has NaOH, water and methyl alcohol;
Described shitosan is dropped to described precipitating bath and forms the gel bead;
Described precipitating bath with described gel bead is warmed to about surrounding room temperature;
Towards Xian Suoshu gel bead;
Described gel bead is suspended in the crosslinker solution about 1 hour to about 24 hours and forms crosslinked bead, wherein said crosslinker solution has about 0.1% to about 50% the cross-linking compounds that is selected from glutaraldehyde and glyoxal;
Towards the crosslinked bead of Xian Suoshu; And
Dry described crosslinked bead and form the chitosan crosslinked resin bead of porous.
20. the described smog filter medium of claim 19, wherein said cross-linking compounds is a glutaraldehyde.
21. the described smog filter medium of claim 19, wherein said cross-linking compounds is a glyoxal.
22. a cigarette smoke filter, it comprises the crosslinked chitosan resin of about 10mg to about 200mg scope, and described resin has the size of 16 order to 70 order scopes.
23. cigarette filter according to claim 22, wherein said filter is connected to cigarette by filter and props up.
24. cigarette filter according to claim 22, wherein said resin are incorporated into and one or morely are selected from paper insert, plug, the space of filter tip paper, shaping and flow freely in the cigarette filter parts of sleeve pipe.
25. cigarette filter according to claim 22, wherein said resin is incorporated into cigarette filter paper.
26. a manufacturing is for the method for removing the useful filter of gas component in the admixture of gas, it may further comprise the steps:
Preparation has the filter medium of the cross-linking compounds that is selected from glutaraldehyde and glyoxal, and wherein said cross-linking compounds is crosslinked to shitosan; And
Described filter medium is incorporated in the filter, and wherein said filter medium is removed the described gas component in the described admixture of gas.
27. method according to claim 26 comprises that further with filter tip paper described filter being connected to cigarette props up.
28. method according to claim 26, wherein said filter medium are incorporated into and one or morely are selected from paper insert, plug, the space of filter tip paper, shaping and flow freely in the cigarette filter parts of sleeve pipe.
29. method according to claim 26, wherein said cross-linking compounds is a glutaraldehyde.
30. method according to claim 26, wherein said cross-linking compounds is a glyoxal.
31. method according to claim 26, wherein said cross-linking compounds is incorporated in the cavity of described filter.
32. method of removing the gas component in the admixture of gas, it comprises described admixture of gas contacted with filter and passes through, wherein said filter has the reagent of being made up of at least a reactive functional groups that is crosslinked to shitosan basically, thereby make the described gas component chemically reactive of described reagent and described admixture of gas and remove described gas component from described admixture of gas, wherein said functional group is selected from glutaraldehyde and glyoxal.
33. the described method according to claim 32 further may further comprise the steps: cross described filter and make the described component of the described admixture of gas that will be removed with described reagent chemically reactive and stop it to enter described gas again to flow thereby generate gas communication that described admixture of gas and guiding contain described admixture of gas.
34. a tobacco smoke filter, it contains the chitosan resin of the reactive amino of the quantity with minimizing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/842,165 | 2004-05-10 | ||
| US10/842,165 US20050247323A1 (en) | 2004-05-10 | 2004-05-10 | Selective filtration of cigarette smoke using chitosan derivatives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101043826A true CN101043826A (en) | 2007-09-26 |
Family
ID=34967401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800208649A Pending CN101043826A (en) | 2004-05-10 | 2005-04-27 | Selective filtration of cigarette smoke using chitosan derivatives |
Country Status (12)
| Country | Link |
|---|---|
| US (2) | US20050247323A1 (en) |
| EP (2) | EP1746906A1 (en) |
| JP (1) | JP4547422B2 (en) |
| CN (1) | CN101043826A (en) |
| AR (1) | AR049048A1 (en) |
| AU (1) | AU2005244774B2 (en) |
| BR (1) | BRPI0510809A (en) |
| CA (1) | CA2565112C (en) |
| MY (1) | MY139894A (en) |
| RU (1) | RU2336790C2 (en) |
| WO (1) | WO2005112671A1 (en) |
| ZA (1) | ZA200609182B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102740946A (en) * | 2009-03-16 | 2012-10-17 | 原生生物国际股份公司 | Cold-sensitive hydrogels and their use as filters |
| CN102793271A (en) * | 2012-08-31 | 2012-11-28 | 福建中烟工业有限责任公司 | Application of cross-linked chitosan porous microspheres in cigarette filter tips |
| CN103300477A (en) * | 2013-06-18 | 2013-09-18 | 云南烟草科学研究院 | Novel filter tip material, and preparation method and application thereof |
| CN108576924A (en) * | 2018-05-17 | 2018-09-28 | 江苏工程职业技术学院 | A kind of load molecular sieve cigarette filter and preparation method thereof |
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| US9226524B2 (en) | 2010-03-26 | 2016-01-05 | Philip Morris Usa Inc. | Biopolymer foams as filters for smoking articles |
| US9192193B2 (en) | 2011-05-19 | 2015-11-24 | R.J. Reynolds Tobacco Company | Molecularly imprinted polymers for treating tobacco material and filtering smoke from smoking articles |
| CN102336921B (en) * | 2011-06-30 | 2012-09-05 | 哈尔滨工业大学 | Preparation method of vapor-phase crosslinked chitosan/polyoxyethylene composite film |
| GB201112539D0 (en) | 2011-07-21 | 2011-08-31 | British American Tobacco Co | Porous carbon and methods of production thereof |
| WO2013036164A2 (en) * | 2011-09-05 | 2013-03-14 | Общество С Ограниченной Ответственностью "Эфтэк" | Cigarette filter segment |
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| GB201412752D0 (en) | 2014-07-17 | 2014-09-03 | Nicoventures Holdings Ltd | Electronic vapour provision system |
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| CN110179155A (en) * | 2019-05-30 | 2019-08-30 | 华侨大学 | A kind of application of polyamino chitosan material in cigarette filter |
| CN113786815A (en) * | 2021-09-26 | 2021-12-14 | 桂林清研皓隆复合材料研究院有限公司 | Adsorbing material for water pollution treatment and preparation method thereof |
| CN117510855B (en) * | 2023-11-09 | 2024-04-23 | 广州雷斯曼新材料科技有限公司 | High-purity dimethyl silicone oil and preparation method and application thereof |
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| US3176004A (en) * | 1961-03-22 | 1965-03-30 | Meiji Seika Kaisha | 6-deoxy-6-mercapto-d-glucosamine and a process for the preparation of this compound |
| GB1509197A (en) * | 1974-06-17 | 1978-05-04 | British American Tobacco Co | Tobacco-smoke filters |
| US4018678A (en) * | 1974-08-09 | 1977-04-19 | Peniston Quintin P | Method of and apparatus for fluid filtration and the like with the aid of chitosan |
| US4038992A (en) * | 1975-09-29 | 1977-08-02 | The Japan Tobacco & Salt Public Corporation | Granular composition for tobacco filter |
| US4125708A (en) * | 1977-02-15 | 1978-11-14 | The United States Of America As Represented By The Secretary Of Agriculture | Chitosan modified with anionic agent and glutaraldehyde |
| JPS624702A (en) * | 1985-06-28 | 1987-01-10 | Lion Corp | Production of water-soluble acrylated chitosan |
| US5021207A (en) * | 1986-12-16 | 1991-06-04 | E. I. Du Pont De Nemours And Company | High strength fibers from chitin derivatives |
| JPH01104305A (en) * | 1987-10-15 | 1989-04-21 | Tadashi Uragami | Membrane for separating liquid |
| JP3576292B2 (en) * | 1995-10-05 | 2004-10-13 | ダイセル化学工業株式会社 | Tobacco filter and method for producing the same |
| US5993661A (en) * | 1997-04-14 | 1999-11-30 | The Research Foundation Of State University Of New York | Macroporous or microporous filtration membrane, method of preparation and use |
| US6209547B1 (en) * | 1998-10-29 | 2001-04-03 | Philip Morris Incorporated | Cigarette filter |
| US20020179106A1 (en) * | 2001-03-28 | 2002-12-05 | Zawadzki Michael A. | Reduced ignition propensity smoking article with a polysaccharide treated wrapper |
| US20030159703A1 (en) * | 2002-02-22 | 2003-08-28 | Zuyin Yang | Flavored carbon useful as filtering material of smoking article |
| US6814786B1 (en) * | 2003-04-02 | 2004-11-09 | Philip Morris Usa Inc. | Filters including segmented monolithic sorbent for gas-phase filtration |
-
2004
- 2004-05-10 US US10/842,165 patent/US20050247323A1/en not_active Abandoned
-
2005
- 2005-04-27 WO PCT/US2005/014476 patent/WO2005112671A1/en active Application Filing
- 2005-04-27 EP EP05740341A patent/EP1746906A1/en not_active Withdrawn
- 2005-04-27 EP EP12176082.1A patent/EP2510815A3/en not_active Withdrawn
- 2005-04-27 CN CNA2005800208649A patent/CN101043826A/en active Pending
- 2005-04-27 BR BRPI0510809-8A patent/BRPI0510809A/en not_active IP Right Cessation
- 2005-04-27 RU RU2006143635/12A patent/RU2336790C2/en not_active IP Right Cessation
- 2005-04-27 JP JP2007511421A patent/JP4547422B2/en not_active Expired - Fee Related
- 2005-04-27 AU AU2005244774A patent/AU2005244774B2/en not_active Ceased
- 2005-04-27 CA CA2565112A patent/CA2565112C/en not_active Expired - Fee Related
- 2005-05-05 MY MYPI20052013A patent/MY139894A/en unknown
- 2005-05-10 AR ARP050101891A patent/AR049048A1/en active IP Right Grant
-
2006
- 2006-11-03 ZA ZA200609182A patent/ZA200609182B/en unknown
-
2007
- 2007-09-12 US US11/854,142 patent/US20070295345A1/en not_active Abandoned
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102740946A (en) * | 2009-03-16 | 2012-10-17 | 原生生物国际股份公司 | Cold-sensitive hydrogels and their use as filters |
| CN102793271A (en) * | 2012-08-31 | 2012-11-28 | 福建中烟工业有限责任公司 | Application of cross-linked chitosan porous microspheres in cigarette filter tips |
| CN102793271B (en) * | 2012-08-31 | 2015-04-22 | 福建中烟工业有限责任公司 | Application of cross-linked chitosan porous microspheres in cigarette filter tips |
| CN103300477A (en) * | 2013-06-18 | 2013-09-18 | 云南烟草科学研究院 | Novel filter tip material, and preparation method and application thereof |
| CN103300477B (en) * | 2013-06-18 | 2015-12-09 | 云南烟草科学研究院 | A kind of novel filter tip material and preparation method thereof and application |
| CN108576924A (en) * | 2018-05-17 | 2018-09-28 | 江苏工程职业技术学院 | A kind of load molecular sieve cigarette filter and preparation method thereof |
| CN108576924B (en) * | 2018-05-17 | 2020-08-11 | 江苏工程职业技术学院 | Cigarette filter tip loaded with molecular sieve and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| MY139894A (en) | 2009-11-30 |
| EP1746906A1 (en) | 2007-01-31 |
| EP2510815A2 (en) | 2012-10-17 |
| CA2565112A1 (en) | 2005-12-01 |
| AU2005244774B2 (en) | 2009-01-29 |
| JP4547422B2 (en) | 2010-09-22 |
| RU2336790C2 (en) | 2008-10-27 |
| EP2510815A3 (en) | 2013-10-30 |
| AU2005244774A1 (en) | 2005-12-01 |
| JP2007535929A (en) | 2007-12-13 |
| BRPI0510809A (en) | 2007-11-06 |
| CA2565112C (en) | 2011-11-01 |
| AR049048A1 (en) | 2006-06-21 |
| RU2006143635A (en) | 2008-06-20 |
| US20050247323A1 (en) | 2005-11-10 |
| US20070295345A1 (en) | 2007-12-27 |
| ZA200609182B (en) | 2008-06-25 |
| WO2005112671A1 (en) | 2005-12-01 |
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Application publication date: 20070926 |