CN104738814B - Micro-nano structure additives of filter tip of phenol and its preparation method and application in a kind of reduction cigarette smoke - Google Patents
Micro-nano structure additives of filter tip of phenol and its preparation method and application in a kind of reduction cigarette smoke Download PDFInfo
- Publication number
- CN104738814B CN104738814B CN201510071043.3A CN201510071043A CN104738814B CN 104738814 B CN104738814 B CN 104738814B CN 201510071043 A CN201510071043 A CN 201510071043A CN 104738814 B CN104738814 B CN 104738814B
- Authority
- CN
- China
- Prior art keywords
- filter tip
- additives
- cigarette
- filter
- phenol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- A24D3/061—Use of materials for tobacco smoke filters containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking
-
- 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
- A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
- A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
-
- 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
- A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
Abstract
The present invention relates to a kind of micro-nano structure additives of filter tip for reducing phenol in cigarette smoke, described additives of filter tip loads polyelectrolyte nanoparticle using cigarette coconut husk charcoal as carrier in carrier surface；Described polyelectrolyte nanoparticle is the self-assembly of amphoteric ion polymer, and described amphoteric ion polymer is the amphoteric ion copolymer containing hydroxyl；Weight/mass percentage composition of the polyelectrolyte nanoparticle in additives of filter tip is 0.1 ~ 5.0%.For the present invention compared with the control cigarette of same specification, the cigarette filter containing additive of the present invention can make the burst size of phenol in cigarette mainstream flue gas reduce by 10~20%.The additives of filter tip preparation technology of the present invention is simple, has good industrial applicibility.
Description
Technical field
The present invention relates to Harm reduction techniques technical field, and in particular to a kind of micro-nano structure filter for reducing phenol in cigarette smoke
Mouth additive and its preparation method and application.
Background technology
As society has caused to smoking and the continuous enhancing of health problem concern, the harm reduction technical research of cigarette product
The great attention of tobacco business.For various harmful components in cigarette smoke, researcher has developed a variety of harm reduction technologies, if any multiple
Close filter tip, using filter tip ventilation dilution technology, using the fast cigarette paper of high-air-permeability and Burning velocity, mix expanded cut tobacco and swollen
The methods of swollen stem.Modification wherein to cigarette filter is one of conventional harm reduction means, by into cigarette filter add or
Composite biological material, high polymer material and nano material etc., reach the effect for effectively reducing harmful constituents in cigarette flue gas.
Phenolic compounds in cigarette smoke has kind more than 40, wherein most important including phenol, benzenediol and methylphenol etc..Cigarette
Gas phenolic compound is mainly derived from polyphenol compound in tobacco leaf（Chlorogenic acid and rutin sophorin）Cracking, to the fragrance product of cigarette
Matter plays a very important role.But some aldehydes matters have a tumor promotion, phenol, m-cresol, p-cresol, o-cresol,
Resorcinol etc. is included by Hoffman lists, is included in the recommendatory control composition for reducing cigarette harmfulness.Chinese patent CN
Disclosed in 101664228 B p- [1- (4- hydroxy phenyls) -1- Methylethyls] cup [8] aromatic hydrocarbons is straight as cigarette additive
Connect and be added in cigarette filter, reduce the content of phenol in flue gas.Chinese patent ZL201010278343.6 is disclosed with porous
Material is carrier, and alternate load polyanion and polycationic material, reach phenol decomposition effect in a manner of LBL self-assembly.But this
A little materials either prepare higher cost or complex process in actual production process, are not suitable for large-scale industrial production.Cause
This, it is necessary to develop a kind of new additives of filter tip.
The content of the invention
For more than prior art deficiency, first purpose of the invention is to provide phenol in a kind of reduction cigarette smoke
Micro-nano structure additives of filter tip, the additives of filter tip can effectively reduce the burst size of phenol in flue gas.Second of the present invention
Purpose is to provide the preparation method of above-mentioned additives of filter tip, and this method is simply controllable, suitable for industrialized production.The of the present invention
Three purposes are to provide the application of above-mentioned additives of filter tip.
In order to realize first above-mentioned purpose, present invention employs following technical scheme：
The micro-nano structure additives of filter tip of phenol in a kind of reduction cigarette smoke, described additives of filter tip is with cigarette coconut husk
Charcoal is carrier, and loads polyelectrolyte nanoparticle in carrier surface；Described polyelectrolyte nanoparticle is that amphion gathers
The self-assembly of compound, described amphoteric ion polymer are the amphoteric ion copolymer containing hydroxyl；The polyelectrolyte is received
Weight/mass percentage composition of the rice corpuscles in additives of filter tip is 0.1 ~ 5.0%.
The polyelectrolyte nanoparticle of cigarette coconut husk charcoal area load of the present invention can both increase flue gas and material
Contact, the hole of coconut husk charcoal will not be blocked again；Hydroxy functional group therein, quaternary ammonium salt group etc. are advantageous to adsorbing phenol, increase
Reduce the effect of phenol.
Weight/mass percentage composition of the polyelectrolyte nanoparticle in additives of filter tip is 0.1 ~ 5.0%.Can save into
The burst size of phenol in flue gas is effectively reduced on the premise of this.Preferably, the polyelectrolyte nanoparticle adds in filter tip
Weight/mass percentage composition in agent is 0.2 ~ 2.0%.
Preferably, described amphoteric ion copolymer includes MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, acrylic acid
The copolymer of ester and N, N- dimethyl N- (2- methylacryoyloxyethyls) N- (3- sulfopropyls) ammonium salt.It is described as further preferably
Acrylate be acrylic acid -2- hydroxyl ethyl esters, 2-hydroxypropyl acrylate and glycidyl acrylate in one kind.
In order to realize second above-mentioned purpose, present invention employs following technical scheme：
A kind of to prepare the above-mentioned method for reducing the micro-nano structure additives of filter tip of phenol in cigarette smoke, this method includes
Following step：
1）Monomer containing quaternary ammonium salt group, acrylate monomer and zwitterionic monomer are added to the water, are passed through nitrogen,
The oxidation-reduction initiator that mass percent concentration is 1~3% is added, solution/emulsion polymerization is carried out at 35~50 DEG C, is gathered
It is 8~24 hours to close the time, obtains the dispersion liquid of polyelectrolyte nanoparticle；
2）Using cigarette coconut husk charcoal as carrier, it is dipped into the dispersion liquid of above-mentioned polyelectrolyte nanoparticle, by quiet
The mode of electric drive growth in situ, after a certain amount of polyelectrolyte nanoparticle of its area load, filtered, washing and drying
Obtain the additives of filter tip of micro-nano structure.
Preferably, step 1）Described in the monomer containing quaternary ammonium salt group, acrylate monomer and amphion list
Mass concentration of the body in water is respectively 0.1~5%, 0.1~5% and 1~15%.
Preferably, step 2）Described in electrostatic drive growth in situ condition be at 25~35 DEG C, stand 0.5~
3.5 hour.
In order to realize the 3rd above-mentioned purpose, present invention employs following technical scheme：
Application of the above-mentioned additives of filter tip in the cigarette filter of phenol in preparing reduction cigarette smoke.
The cigarette filter of phenol in a kind of reduction cigarette smoke, above-mentioned additives of filter tip is with the addition of in the cigarette filter,
Addition of the additives of filter tip in every filter tip is 10 ~ 60 mg.
Preferably, described cigarette filter is binary combined filter tip, including the common filter stick at nearly mouth end and vertically
The charge bar at the nearly pipe tobacco end of superposition；Described charge bar is made up of described additives of filter tip and common filter stick material；It is or described
Cigarette filter be ternary composite filter tip, including two sections of common filter sticks and the charge bar that is superimposed vertically, described charge bar are located at
Between two sections of common filter sticks；Described charge bar is by described additives of filter tip or by described additives of filter tip and common filter stick material
Material composition.
Common filter stick of the present invention preferably uses the vinegar fibre rod and papery mouth rod of this area.
Compared with prior art, the invention has the advantages that：Micro-nano structure additives of filter tip of the present invention, with cigarette coconut husk
The functional group of the special construction of carbon surface load nano particle and the polyelectrolyte nanoparticle of load realizes effective reduction
The burst size of phenol in cigarette smoke.Compared with the control cigarette of same specification, the cigarette filter containing additive of the present invention can make
The burst size of phenol reduces by 10~20% in cigarette mainstream flue gas.The additives of filter tip preparation technology of the present invention is simple, has good
Industrial applicibility.
Embodiment
Embodiment 1：
By the MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride of 1 mass parts, the acrylic acid -2- hydroxyl ethyl esters and 25 of 1 mass parts
The N of mass parts, N- dimethyl N- (2- methylacryoyloxyethyls) N- (3- sulfopropyls) ammonium salt is added to the water, and being made into concentration is
10wt% mixed liquor, nitrogen is passed through, adds the oxidation-reduction initiator K that concentration is 3wt%2S2O8And NaHSO3(1：1), exist
Solution/emulsion polymerization is carried out at 35 DEG C, polymerization time is 24 hours, obtains the dispersion liquid of polyelectrolyte nanoparticle.Cigarette is used
Coconut husk charcoal is impregnated into the dispersion liquid of polyelectrolyte nanoparticle, and 0.5 h is stood at 25 DEG C, in situ raw by electrostatic drive
Long mode, the addition of micro-nano structure filter tip is obtained after its area load polyelectrolyte nanoparticle, filtered, washing and drying
Agent.Wherein, weight/mass percentage composition of the polyelectrolyte nanoparticle in additive is about 0.1%.
It is about 20 mg by addition of the above-mentioned additive application in cigarette filter, every cigarette filter, determines cigarette master
The burst size of phenol in flue gas is flowed, so that the same specification cigarette of additive is not used as control sample.As a result shown in table 1.
Influence of the additives of filter tip of the present invention of table 1. to phenol release amount in main flume
Embodiment 2：
By the MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride of 5 mass parts, the 2-hydroxypropyl acrylate of 5 mass parts and 10
The N of mass parts, N- dimethyl N- (2- methylacryoyloxyethyls) N- (3- sulfopropyls) ammonium salt is added to the water, and being made into concentration is
10wt% mixed liquor, nitrogen is passed through, adds the oxidation-reduction initiator K that concentration is 1wt%2S2O8And NaHSO3 (1：1), exist
Solution/emulsion polymerization is carried out at 35 DEG C, polymerization time is 24 hours, obtains the dispersion liquid of polyelectrolyte nanoparticle.Cigarette is used
Coconut husk charcoal is impregnated into the dispersion liquid of polyelectrolyte nanoparticle, and 3.5 h are stood at 35 DEG C, in situ raw by electrostatic drive
Long mode, the addition of micro-nano structure filter tip is obtained after its area load polyelectrolyte nanoparticle, filtered, washing and drying
Agent.Wherein, weight/mass percentage composition of the polyelectrolyte nanoparticle in additive is about 5%.
It is about 30 mg by addition of the above-mentioned additive application in cigarette filter, every cigarette filter.Determine cigarette master
The burst size of phenol in flue gas is flowed, so that the same specification cigarette of additive is not used as control sample.As a result shown in table 2.
Influence of the additives of filter tip of the present invention of table 2. to phenol release amount in main flume
Embodiment 3：
By the MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride of 2 mass parts, the glycidyl acrylate of 1 mass parts and 20
The N of mass parts, N- dimethyl N- (2- methylacryoyloxyethyls) N- (3- sulfopropyls) ammonium salt is added to the water, and is made into quality percentage
Specific concentration is 10wt% mixed liquor, is passed through nitrogen, adds the oxidation-reduction initiator that mass percent concentration is 1.5wt%
K2S2O8And NaHSO3 (1：1) solution/emulsion polymerization, is carried out at 35 DEG C, polymerization time is 24 hours, obtains polyelectrolyte and receives
The dispersion liquid of rice corpuscles.Cigarette is impregnated into the dispersion liquid of polyelectrolyte nanoparticle with coconut husk charcoal, 1.5 are stood at 25 DEG C
H, by electrostatic drive growth in situ mode, obtained after its area load polyelectrolyte nanoparticle, filtered, washing and drying
To micro-nano structure additives of filter tip.Wherein, weight/mass percentage composition of the polyelectrolyte nanoparticle in additive is about 1.5%.
It is about 45 mg by addition of the above-mentioned additive application in cigarette filter, every cigarette filter.Determine cigarette master
The burst size of phenol in flue gas is flowed, so that the same specification cigarette of additive is not used as control sample.As a result shown in table 3.
Influence of the additives of filter tip of the of table 3 present invention to phenol release amount in main flume
。
Claims (9)
- A kind of 1. micro-nano structure additives of filter tip for reducing phenol in cigarette smoke, it is characterised in that：Described additives of filter tip Using cigarette coconut husk charcoal as carrier, and polyelectrolyte nanoparticle is loaded in carrier surface；Described polyelectrolyte nanoparticle is The self-assembly of amphoteric ion polymer, described amphoteric ion polymer are the amphoteric ion copolymer containing hydroxyl；It is described Weight/mass percentage composition of the polyelectrolyte nanoparticle in additives of filter tip is 0.1 ~ 5.0%;Described amphoteric ion copolymer is MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, acrylate and N, N- dimethyl N- (2- methylacryoyloxyethyls) N- (3- Sulfopropyl) ammonium salt copolymer.
- 2. the micro-nano structure additives of filter tip according to claim 1 for reducing phenol in cigarette smoke, it is characterised in that：Institute Weight/mass percentage composition of the polyelectrolyte nanoparticle stated in additives of filter tip is 0.2 ~ 2.0%.
- 3. the micro-nano structure additives of filter tip according to claim 1 for reducing phenol in cigarette smoke, it is characterised in that：Institute The acrylate stated is one kind in acrylic acid -2- hydroxyl ethyl esters, 2-hydroxypropyl acrylate and glycidyl acrylate.
- 4. one kind prepares the micro-nano structure for reducing phenol in the cigarette smoke filter described in claim 1 ~ 3 any one claim The method of mouth additive, it is characterised in that this method comprises the following steps：1）MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, acrylate and N, N- dimethyl N- (2- methacryls will be contained Oxygen ethyl) N- (3- sulfopropyls) ammonium salt is added to the water, and is passed through nitrogen, add oxidation that mass percent concentration is 1~3%-also Former initiator, solution/emulsion polymerization is carried out at 35~50 DEG C, polymerization time is 8~24 hours, obtains polyelectrolyte nanoparticle The dispersion liquid of son；2）Using cigarette coconut husk charcoal as carrier, it is dipped into the dispersion liquid of above-mentioned polyelectrolyte nanoparticle, is driven by electrostatic The mode of dynamic growth in situ, obtained after a certain amount of polyelectrolyte nanoparticle of its area load, filtered, washing and drying The additives of filter tip of micro-nano structure.
- 5. the preparation method of additives of filter tip according to claim 4, it is characterised in that：Step 1）Described in methyl-prop Alkene acyloxyethyl trimethyl ammonium chloride, acrylate and N, N- dimethyl N- (2- methylacryoyloxyethyls) N- (3- sulfopropyls) Mass concentration of the ammonium salt in water is respectively 0.1~5%, 0.1~5% and 1~15%.
- 6. the preparation method of additives of filter tip according to claim 4, it is characterised in that：Step 2）Described in electrostatic drive The condition of dynamic growth in situ is at 25~35 DEG C, stands 0.5~3.5 hour.
- 7. the cigarette filter of additives of filter tip phenol in reduction cigarette smoke is prepared according to any one of claim 1 ~ 3 In application.
- A kind of 8. cigarette filter for reducing phenol in cigarette smoke, it is characterised in that：It is any containing claim 1 ~ 3 in the filter tip Additives of filter tip described in, addition of the additives of filter tip in every filter tip is 10 ~ 60 mg.
- A kind of 9. cigarette filter for reducing phenol in cigarette smoke according to claim 8, it is characterised in that：Described volume Cigarette filter tip is binary combined filter tip, including the common filter stick at nearly mouth end and the charge bar at the nearly pipe tobacco end being superimposed vertically；It is described Charge bar be made up of described additives of filter tip and common filter stick；Or described cigarette filter is ternary composite filter tip, including Two sections of common filter sticks and the charge bar being superimposed vertically, described charge bar is between two sections of common filter sticks；Described charge bar by Described additives of filter tip is made up of described additives of filter tip and common filter stick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071043.3A CN104738814B (en) | 2015-02-11 | 2015-02-11 | Micro-nano structure additives of filter tip of phenol and its preparation method and application in a kind of reduction cigarette smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071043.3A CN104738814B (en) | 2015-02-11 | 2015-02-11 | Micro-nano structure additives of filter tip of phenol and its preparation method and application in a kind of reduction cigarette smoke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104738814A CN104738814A (en) | 2015-07-01 |
| CN104738814B true CN104738814B (en) | 2018-01-30 |
Family
ID=53579511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510071043.3A Active CN104738814B (en) | 2015-02-11 | 2015-02-11 | Micro-nano structure additives of filter tip of phenol and its preparation method and application in a kind of reduction cigarette smoke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104738814B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108077994B (en) * | 2017-12-21 | 2021-02-26 | 中国烟草总公司郑州烟草研究院 | Coating liquid for reducing phenol release amount in mainstream smoke of paper filter stick type cigarette |
| CN110959908A (en) * | 2019-11-18 | 2020-04-07 | 湖北中烟工业有限责任公司 | Adsorbing material for cigarette filter stick |
| CN111019041B (en) * | 2019-12-24 | 2021-05-25 | 齐鲁工业大学 | High-conductivity, stretchable, compressible and repairable zwitterionic gel polymer electrolyte and preparation and application thereof |
| CN113115980B (en) * | 2021-04-01 | 2023-06-30 | 中国烟草总公司郑州烟草研究院 | Method for reducing phenol content in waste gas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101919591A (en) * | 2010-09-10 | 2010-12-22 | 浙江中烟工业有限责任公司 | Poly glucosamine hexanedioic acid vinyl ester material for reducing content of phenol type substances |
| CN101919589A (en) * | 2010-09-10 | 2010-12-22 | 浙江中烟工业有限责任公司 | Chitosan polycation composite material reducing phenols materials in cigarette smoke |
| CN102443093A (en) * | 2010-09-30 | 2012-05-09 | 北京市光明化工科技开发中心 | Absorbent polymer, composite fiber and composite fiber cigarette filter tip |
| EP2792410A1 (en) * | 2013-04-15 | 2014-10-22 | Goldemar Solutions, S.L. | Method of manufacturing a catalyst comprising gold nanoparticles, the catalyst and its use |
-
2015
- 2015-02-11 CN CN201510071043.3A patent/CN104738814B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101919591A (en) * | 2010-09-10 | 2010-12-22 | 浙江中烟工业有限责任公司 | Poly glucosamine hexanedioic acid vinyl ester material for reducing content of phenol type substances |
| CN101919589A (en) * | 2010-09-10 | 2010-12-22 | 浙江中烟工业有限责任公司 | Chitosan polycation composite material reducing phenols materials in cigarette smoke |
| CN102443093A (en) * | 2010-09-30 | 2012-05-09 | 北京市光明化工科技开发中心 | Absorbent polymer, composite fiber and composite fiber cigarette filter tip |
| EP2792410A1 (en) * | 2013-04-15 | 2014-10-22 | Goldemar Solutions, S.L. | Method of manufacturing a catalyst comprising gold nanoparticles, the catalyst and its use |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104738814A (en) | 2015-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104738814B (en) | Micro-nano structure additives of filter tip of phenol and its preparation method and application in a kind of reduction cigarette smoke | |
| CN104785177B (en) | A kind of preparation method of alginate Graphene composite double network gel ball | |
| CN102617782B (en) | Preparation method and application of polymethyl methacrylate (polyMMA) intercommunicated porous material | |
| CN101947435B (en) | Chitosan polycation additive for reducing phenols in cigarette smoke | |
| CN103005712A (en) | Grapheme type fiber cigarette filter and preparation method thereof | |
| CN104389234A (en) | Cigarette filter tip added with chitosan-graphene oxide composite material | |
| CN104720104B (en) | Additives of filter tip of crotonaldehyde and its preparation method and application in a kind of selectivity reducing cigarette fume | |
| CN102266123A (en) | Beta-cyclodextrin composite particles capable of selectively reducing phenolic compounds in smoke gas and application of beta-cyclodextrin composite particles | |
| CN102715655A (en) | Cigarette filter stick capable of reducing phenol and crotonaldehyde ingredients in cigarette smoke | |
| CN105621412A (en) | Preparation method of carbon material with three-stage pores | |
| CN104738815B (en) | Nanometer cyclodextrin compound additive of phenol and its preparation method and application in a kind of reduction cigarette smoke | |
| CN205106377U (en) | Add aerobic fossil china ink alkene - mesoporous silica combined material's cigarette filter rod | |
| CN103611505B (en) | Preparation method, product and application of copper ion functionalized porous cellulose composite microsphere | |
| CN110860134A (en) | Micro-nano fiber filter disc with adsorption and catalytic harm reduction mechanisms and preparation method and application thereof | |
| CN101919591A (en) | Poly glucosamine hexanedioic acid vinyl ester material for reducing content of phenol type substances | |
| CN104525126A (en) | Bio-polyamines-modified graphene adsorption material as well as preparation method and application thereof | |
| CN109174004A (en) | A kind of active carbon that improves is to the method and application of essence sustained release performance | |
| CN103561824A (en) | Use of a reticulated dextran polymer as a filter against the inhalation of substances injurious to the health | |
| CN104473324B (en) | Application of cyclodextrin polymer for selectively reducing phenol content in cigarette smoke | |
| CN105621383A (en) | Preparation method of macroporous carbon | |
| JP6325009B2 (en) | Method for producing nano colloidal particle carrier and carrier | |
| CN102613704B (en) | Application of polyvinyl acetate adsorption resin on cigarettes | |
| CN110813252A (en) | Porous mineral clay loaded polyacrylamide liquid phase adsorption material and application thereof | |
| CN105621386A (en) | Method for preparing carbon material | |
| CN107934983A (en) | Micro- mesoporous yolk shell composite molecular sieve of a kind of carried metal and preparation method thereof and a kind of cigarette |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |