CN102977820B - Water base type sealing rubber for tobacco and method for preparing water base type sealing rubber for tobacco - Google Patents
Water base type sealing rubber for tobacco and method for preparing water base type sealing rubber for tobacco Download PDFInfo
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Abstract
The invention discloses a water base type sealing rubber for tobacco and a method for preparing the water base type sealing rubber for tobacco, which belong to the field of adhesives. The sealing rubber consists of water-based acrylic emulsion, vinyl acetate-dibutyl maleate emulsion, water-based rosin emulsion, water-based assistant and deionized water; and the usages of the components in parts by weight are as follows: 200-400 parts of the water-based acrylic emulsion, 300-500 parts of the vinyl acetate-dibutyl maleate emulsion, 100-200 parts of the water-based rosin emulsion, 2-5 parts of the water-based assistant and the 50-100 parts of the deionized water. The sealing rubber has the characteristics of high initial adhesion, quick drying speed, excellent freezing resistance, small smell and low use cost, and is completely in accordance with the new standard requirements on the sealing rubber for tobacco.
Description
Technical field
The present invention relates to adhesive field, particularly relate to a kind of cigarette aq. type sealing compound and preparation method thereof.
Background technology
In cigarette pack process, parcel box and barrel all need box limit or base to seal, and between inner box and outer box, also need to fix, and this all needs to use a kind of sealing compound or edge sealing adhesive, and its effect is sealed or styling exactly.This bonding be to occur in paper and upper mistake between paper, paper and the liner paper of gloss oil, therefore need to require to select suitable tackiness agent according to the difference at these interfaces, tobacco industry sticks with glue agent to cigarette all executable standard, only has standard compliant tackiness agent just can classify the category of selection as.
China is cigarette production and consumption big country, produces every year cigarette and is about 3,400 ten thousand large casees, and related capsule bag is that more than 1,500,000,000 bags bar bag is more than 100,000,000, and this sealing compound of wherein using exceedes 15000 tons, and market is very large.The cigarette that used in the market sticks with glue agent kind and mainly contains hot melt adhesive and water-base cement, and they all belong to the category of environment-friendly adhesive.But the use of hot melt adhesive needs more heat, use inconvenience, initial bonding strength is not high yet, the seam broken of easily coming unstuck.Water-base cement becomes the first-selection of Ge great cigar mill, and the accessibility of its operation and the packaging that initial bonding strength is cigar mill have preferably improved efficiency.But along with the issue of the up-to-date smoke aqueous gel standard of China Tobacco Corporation in 2011, the control of VOC is required to improve constantly, especially benzene series material and formaldehyde content are had higher requirement, cause some smoke aqueous gels to reach a standard.Also there is defect in all kinds of aq. type sealing compounds in the market, the control of benzene series material can not be completely up to standard in this respect, and formaldehyde content also easily exceeds standard, and this will certainly affect the production of cigar mill, even causes stopping production.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of cigarette aq. type sealing compound and preparation method thereof, its initial bonding strength is high, rate of drying is fast, frost resistance is excellent, smell is little and use cost is low, thereby solves the various cigarettes problems such as the feature of environmental protection of aq. type sealing compound is bad and initial bonding strength is not high in the market.
The technical scheme solving the problems of the technologies described above is as follows:
The invention provides a kind of cigarette aq. type sealing compound, this sealing compound is made up of aqueous acrylic emulsion, vinyl acetate between to for plastic-n-butyl maleate emulsion, water-based rosin milk, aqueous promoter and deionized water; The consumption of each composition is as follows by weight:
200～400 parts of aqueous acrylic emulsions;
300～500 parts of vinyl acetate between to for plastic-n-butyl maleate emulsions;
100～200 parts of water-based rosin milks;
2～5 parts of aqueous promoters;
50～100 parts of deionized waters.
Above-mentioned cigarette is with in aq. type sealing compound, and the theoretical second-order transition temperature (Tg) of described aqueous acrylic emulsion is-10～-30 DEG C, and solid content is 45～55%, and viscosity is 200～1000cps, and particle diameter is 200～300nm.
Above-mentioned cigarette is with in aq. type sealing compound, described aqueous acrylic emulsion is that Acrylic Acid Monomer taking 30～40% methyl methacrylate by mass percentage, 30～40% butyl acrylate ester, 20～30% Isooctyl acrylate monomer and 1～5% is as raw material, taking the anionic emulsifier that accounts for whole total monomer weights 0.5～2% as emulsifying agent, the ammonium persulphate that accounts for whole total monomer weights 0.4～0.8% as initiator, account for whole total monomer weight 0.1～0.5% sodium bicarbonates as buffer reagent, the polymer emulsion that adopts pre-emulsification seeded emulsion polymerization to make.
Above-mentioned cigarette is with in aq. type sealing compound, described vinyl acetate between to for plastic-n-butyl maleate emulsion is the polymer emulsion being obtained by vinyl acetate between to for plastic and n-butyl maleate copolymerization, its second-order transition temperature is-5～+ 5 DEG C, particle diameter is 300～1000nm, and viscosity is that 10000～30000cps, solid content are 50～60%.Produce as adopted by Clariant chemical company, product grade has DS5, DS6, DS125 etc.
Above-mentioned cigarette is with in aq. type sealing compound, and the fusing point of described water-based rosin milk is 60～100 DEG C, and solid content is 50～55%, and viscosity is 100～500cps, and particle diameter is 150～300nm.Described water-based rosin milk can adopt any one or two kinds of mixture in the Gum Rosin, staybelite resin, ester gum resin of emulsification, be a kind of by mixtures any one or two kinds of in Gum Rosin, staybelite resin, ester gum resin emulsifying agent exist under carry out the emulsion that outer emulsification obtains, as a kind of aqueous tackifier, play the effect that improves initial bonding strength.This emulsion is a kind of conventional Tackified emulsion, and domestic production producer is a lot, as Wuzhou, Guangxi day become, Wuxi De meter Sheng, Deqing, Guangdong flies swallow etc., they all provide rosin and rosin milk product, model is a lot.
Above-mentioned cigarette is with in aq. type sealing compound, and described aqueous promoter is made up of water-based defoamer and water-borne preservative; Wherein, water-based defoamer adopts mineral oil defoaming agent, and its consumption is 0.1～0.3% of whole raw material weights except aqueous promoter weight; Water-borne preservative adopts isothiazole ketone, and its consumption is 0.1～0.2% of whole raw material weights except aqueous promoter weight.
The present invention also provides a kind of preparation method of aq. type sealing compound, comprises the following steps:
Get each raw material by sealing compound formula of the present invention;
The mixing of composite emulsion: at 65 DEG C～75 DEG C temperature, vinyl acetate between to for plastic-n-butyl maleate emulsion is put in aqueous acrylic emulsion, stirred 25min～35min and form mixed emulsion; Water-based rosin milk is joined in mixed emulsion, continue to stir 25min～35min;
Aftertreatment: by described polymerization kettle temperature raising to 75 DEG C～85 DEG C, vacuumize, vacuum tightness is-0.02～-0.04MPa, keeps 60min under whipped state; Cool to below 50 DEG C, add aqueous promoter, adding deionized water to regulate solid content is 45～55%, and viscosity is 1000～2000cps, uses 100 order filtering nets to filter discharging, obtains aq. type sealing compound.
In above-mentioned preparation method, described aqueous acrylic emulsion makes in the following manner, comprising:
Adopt pre-emulsification seed emulsion polymerization, the deionized water of 40～50wt%, emulsifying agent and whole monomer are put in pre-emulsification still, stirring and emulsifying obtains pre-emulsion; The deionized water, the sodium bicarbonate buffer agent that in polymeric kettle, drop into 45～50wt%, be warming up to 70 DEG C～90 DEG C, adds the ammonium persulfate initiator solution that the pre-emulsion of 5～10wt% and the mass concentration of 20～30wt% are 10%, carries out seed reaction; Then drip the ammonium persulfate initiator solution that remaining pre-emulsion and remaining mass concentration are 10%, 3～4h drips off follow-up continuous insulation reaction 1～2h; Be cooled to 65 DEG C～75 DEG C, add tertbutyl peroxide and ferrous sulfate, carry out rear elimination reaction, remove residual Acrylic Acid Monomer, 65 DEG C～75 DEG C are continued insulation reaction 60min, and the polymer emulsion obtaining is aqueous acrylic emulsion.
Aq. type sealing compound of the present invention combines the excellent adhesiveproperties of aqueous acrylic emulsion, ensures that tackiness agent all has higher bonding strength to paper, gloss oil face; Utilize the good cohesive strength of vinyl acetate between to for plastic-n-butyl maleate emulsion, increase the viscosity of holding of tackiness agent, ensured that the carton after sealing seam broken can not occur, collapses and hold; , by adding water-based rosin milk to improve drying property and initial bonding strength, reduce costs meanwhile, make tackiness agent there is more rational operability and economy.And these three kinds of emulsions have good composite intermiscibility, stability in storage is good, and size distribution, between 100～1000nm, all shows good bonding strength to various materials, and subject range is extensive, and the material of each cigar mill is all had to good adaptability; By the method vacuumizing, remove residual Vinyl Acetate Monomer, benzene homologues and formaldehyde, vinyl acetate residual quantity is controlled in 400ppm, benzene homologues does not detect, formaldehyde content is no more than 20ppm, there is high initial bonding strength, rate of drying is fast, frost resistance is excellent, smell is little, use cost is low feature, meet the standard-required of up-to-date smoke aqueous gel completely.
Embodiment
Below the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to protection scope of the present invention.
Below in conjunction with specific embodiment, the present invention is further described:
Embodiment 1
The present embodiment provides a kind of cigarette aq. type sealing compound, and its formula is as follows:
(1) the raw materials formula of aqueous acrylic emulsion (parts by weight, lower same):
(2) emulsion:
Vinyl acetate between to for plastic-n-butyl maleate emulsion DS6(Clariant product) 450
Water-based rosin milk RE802(Wuxi De meter Sheng product) 144
(4) aqueous promoter:
Defoamer 8034A(Cognis product) 1.8
Sanitas Kathon(ROHM AND HAAS product) 1.2
(5) deionized water 70.
Preparation process:
(1) preparation of aqueous acrylic emulsion: adopt conventional pre-emulsification seed emulsion polymerization, first 40wt% deionized water, emulsifying agent are put in pre-emulsification still together with whole monomers, stirring and emulsifying obtains pre-emulsion; Then in polymeric kettle, drop into 50wt% deionized water, buffer reagent, be warmed up to 80 DEG C of left and right, add the ammonium persulfate initiator of pre-emulsion and the 25wt% of 5wt%, carry out seed reaction; Then drip remaining pre-emulsion and remaining initiator solution, 3～4h drips off follow-up continuous insulation reaction 1～2h; Finally, cool to 70 DEG C of left and right, add tertbutyl peroxide and ferrous sulfate, carry out rear elimination reaction, remove residual Acrylic Acid Monomer, 70 DEG C of left and right insulation reaction 60min;
(2) mixing of composite emulsion: under 70 DEG C of left and right conditions, load weighted vinyl acetate between to for plastic-n-butyl maleate emulsion is put in the aqueous acrylic emulsion that step (1) prepares, continued to stir 30min left and right; Then, according to the charging capacity of design, water-based rosin milk is joined in mixed emulsion, continue to stir 30min left and right;
(3) aftertreatment: by polymerization kettle temperature raising to 80 DEG C left and right, vacuumize, vacuum tightness is-0.02～-0.04MPa, keeps 60min, and keeps stirring; Cool to below 50 DEG C again, add aqueous promoter, the deionized water of adding surplus regulates admittedly containing being 45～55%, and viscosity is 1000～2000cps, uses 100 order filtering nets to filter dischargings.
Embodiment 2
The present embodiment provides a kind of cigarette aq. type sealing compound, and its formula is as follows:
(1) the raw materials formula of aqueous acrylic emulsion (parts by weight, lower same):
(2) copolymer emulsion:
Vinyl acetate between to for plastic-n-butyl maleate emulsion DS5(Clariant product) 400
Water-based rosin milk ER110(Guangxi Wuzhou day becomes product) 180
(3) aqueous promoter:
Defoamer 8034A(Cognis product) 1.4
Sanitas Kathon(ROHM AND HAAS product) 1.8
(4) deionized water 88;
Preparation process:
(1) preparation of aqueous acrylic emulsion: adopt conventional pre-emulsification seed emulsion polymerization, first 42wt% deionized water, emulsifying agent are put in pre-emulsification still together with whole monomers, stirring and emulsifying obtains pre-emulsion; Then in polymeric kettle, drop into 48wt% deionized water, buffer reagent, be warmed up to 80 DEG C of left and right, add the ammonium persulfate initiator of pre-emulsion and the 28wt% of 7wt%, carry out seed reaction; Then drip remaining pre-emulsion and remaining initiator solution, 3～4h drips off follow-up continuous insulation reaction 1～2h; Finally, cool to 70 DEG C of left and right, add tertbutyl peroxide and ferrous sulfate, carry out rear elimination reaction, remove residual Acrylic Acid Monomer, 70 DEG C of left and right insulation reaction 60min;
(2) mixing of composite emulsion: under 70 DEG C of left and right conditions, load weighted vinyl acetate between to for plastic-n-butyl maleate emulsion is put in the aqueous acrylic emulsion that step (1) prepares, continued to stir 30min left and right; Then, according to the charging capacity of design, water-based rosin milk is joined in mixed emulsion, continue to stir 30min left and right;
(3) aftertreatment: by polymerization kettle temperature raising to 80 DEG C left and right, vacuumize, vacuum tightness is-0.02～-0.04MPa, keeps 60min, and keeps stirring.Cool to below 50 DEG C again, add aqueous promoter, the deionized water of adding surplus regulates admittedly containing being 45～55%, and viscosity is 1000～2000cps, uses 100 order filtering nets to filter dischargings.
Embodiment 3
The present embodiment provides a kind of cigarette aq. type sealing compound, and its formula is as follows:
(1) the raw materials formula of aqueous acrylic emulsion (parts by weight, lower same):
(2) composite emulsion
Vinyl acetate between to for plastic-n-butyl maleate emulsion DS125(Clariant product) 330
Water-based rosin milk HBR509(Wuxi De meter Sheng product) 172
(3) aqueous promoter:
Defoamer 8034A(Cognis product) 2.0
Sanitas Kathon(ROHM AND HAAS product) 1.5
(4) deionized water 65;
Preparation process:
(1) preparation of aqueous acrylic emulsion: adopt conventional pre-emulsification seed emulsion polymerization, first 45wt% deionized water, emulsifying agent are put in pre-emulsification still together with whole monomers, stirring and emulsifying obtains pre-emulsion; Then in polymeric kettle, drop into 45wt% deionized water, buffer reagent, be warmed up to 80 DEG C of left and right, add the ammonium persulfate initiator of pre-emulsion and the 20wt% of 5wt%, carry out seed reaction; Then drip remaining pre-emulsion and remaining initiator solution, 3～4h drips off follow-up continuous insulation reaction 1～2h; Finally, cool to 70 DEG C of left and right, add tertbutyl peroxide and ferrous sulfate, carry out rear elimination reaction, remove residual Acrylic Acid Monomer, 70 DEG C of left and right insulation reaction 60min;
(2) mixing of composite emulsion: under 70 DEG C of left and right conditions, load weighted acrylate-vinyl acetate between to for plastic-n-butyl maleate copolymer emulsion is put in the aqueous acrylic emulsion that step (1) prepares, continued to stir 30min left and right; Then, according to the charging capacity of design, water-based rosin milk is joined in mixed emulsion, continue to stir 30min left and right;
(3) aftertreatment: by polymerization kettle temperature raising to 80 DEG C left and right, vacuumize, vacuum tightness is-0.02～-0.04MPa, keeps 60min, and keeps stirring; Cool to below 50 DEG C again, add aqueous promoter, the deionized water of adding surplus regulates admittedly containing being 45～55%, and viscosity is 1000～2000cps, uses 100 order filtering nets to filter dischargings.
Embodiment 4
The present embodiment provides a kind of cigarette aq. type sealing compound, and it is prepared by following steps, comprising:
(1) the raw materials formula of aqueous acrylic emulsion (parts by weight, lower same):
(2) composite emulsion:
Vinyl acetate between to for plastic-n-butyl maleate emulsion DS6(Clariant company product) 380
Deqing, water-based rosin milk Tac3008(Guangdong flies swallow product) 190
(3) aqueous promoter:
Defoamer 8034A(Cognis product) 1.5
Sanitas Kathon(ROHM AND HAAS product) 1.6
(4) deionized water 60;
Preparation process:
(1) preparation of aqueous acrylic emulsion: adopt conventional pre-emulsification seed emulsion polymerization, first 43wt% deionized water, emulsifying agent are put in pre-emulsification still together with whole monomers, stirring and emulsifying obtains pre-emulsion; Then in polymeric kettle, drop into 47wt% deionized water, buffer reagent, be warmed up to 80 DEG C of left and right, add the ammonium persulfate initiator of pre-emulsion and the 28wt% of 8wt%, carry out seed reaction; Then drip remaining pre-emulsion and remaining initiator solution, 3～4h drips off follow-up continuous insulation reaction 1～2h; Finally, cool to 70 DEG C of left and right, add tertbutyl peroxide and ferrous sulfate, carry out rear elimination reaction, remove residual Acrylic Acid Monomer, 70 DEG C of left and right insulation reaction 60min;
(2) mixing of composite emulsion: under 70 DEG C of left and right conditions, load weighted vinyl acetate between to for plastic-n-butyl maleate copolymer emulsion is put in the aqueous acrylic emulsion that step (1) prepares, continued to stir 30min left and right; Then, according to the charging capacity of design, water-based rosin milk is joined in mixed emulsion, continue to stir 30min left and right;
(3) aftertreatment: by polymerization kettle temperature raising to 80 DEG C left and right, vacuumize, vacuum tightness is-0.02～-0.04MPa, keeps 60min, and keeps stirring; Cool to below 50 DEG C again, add aqueous promoter, the deionized water of adding surplus regulates admittedly containing being 45～55%, and viscosity is 1000～2000cps, uses 100 order filtering nets to filter dischargings.
Effect
The aq. type sealing compound detected result that the embodiment of the present invention 1～4 makes is as follows:
Table 1 embodiment of the present invention makes aq. type sealing compound detected result
Note: " ND " representative " does not detect ", lower same
As can be seen from Table 1, the aq. type sealing compound that embodiment 1～4 makes is to meet up-to-date tobacco bale completely to require in residual monomer, benzene series material and formaldehyde examination project.
The aq. type sealing compound that embodiment 1～4 makes, through upper machine practical application, is made parcel box and barrel, and detected result is as follows:
Table 2 makes by the embodiment of the present invention parcel box and the barrel detected result that aq. type sealing compound is made
As can be seen from Table 2, initial strength and the lasting intensity of the aq. type sealing compound that embodiment 1～4 makes are all done well, and the benzene homologues test item of box bag and bar bag also can be up to standard, meets the actual requirement of cigar mill completely.
In sum, aq. type sealing compound provided by the invention combines the excellent adhesiveproperties of aqueous acrylic emulsion, ensures that tackiness agent all has higher bonding strength to paper, gloss oil face; Utilize the good cohesive strength of vinyl acetate between to for plastic-n-butyl maleate emulsion, increase the viscosity of holding of tackiness agent, ensured that the carton after sealing seam broken can not occur, collapses and hold; , by adding water-based rosin milk to improve drying property and initial bonding strength, reduce costs meanwhile, make tackiness agent there is more rational operability and economy.And these three kinds of emulsions have good intermiscibility, stability in storage is good, and size distribution is wider, and various materials are all shown to good bonding strength, and subject range is extensive, and all there is to good adaptability in each cigar mill.By the method vacuumizing, remove residual Vinyl Acetate Monomer, benzene homologues and formaldehyde, vinyl acetate residual quantity is controlled in 400ppm, benzene homologues does not detect, formaldehyde content is no more than 20ppm, meets the standard-required of up-to-date smoke aqueous gel completely.
The above; only for preferably embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (8)
1. a cigarette aq. type sealing compound, is characterized in that, this sealing compound is made up of aqueous acrylic emulsion, vinyl acetate between to for plastic-n-butyl maleate emulsion, water-based rosin milk, aqueous promoter and deionized water; The consumption of each composition is as follows by weight:
Described aqueous acrylic emulsion is that Acrylic Acid Monomer taking 30～40% methyl methacrylate by mass percentage, 30～40% butyl acrylate ester, 20～30% Isooctyl acrylate monomer and 1～5% is as raw material, taking the anionic emulsifier that accounts for whole total monomer weights 0.5～2% as emulsifying agent, the ammonium persulphate that accounts for whole total monomer weights 0.4～0.8% as initiator, account for whole total monomer weight 0.1～0.5% sodium bicarbonates as buffer reagent, the polymer emulsion that adopts pre-emulsification seeded emulsion polymerization to make.
2. cigarette as claimed in claim 1 aq. type sealing compound, is characterized in that, the theoretical second-order transition temperature (Tg) of described aqueous acrylic emulsion is-10～-30 DEG C, and solid content is 45～55%, and viscosity is 200～1000cps, and particle diameter is 200～300nm.
3. cigarette as claimed in claim 1 aq. type sealing compound, it is characterized in that, described vinyl acetate between to for plastic-n-butyl maleate emulsion is the polymer emulsion being obtained by vinyl acetate between to for plastic and n-butyl maleate copolymerization, its second-order transition temperature is-5～+ 5 DEG C, particle diameter is 300～1000nm, and viscosity is that 10000～30000cps, solid content are 50～60%.
4. cigarette as claimed in claim 1 aq. type sealing compound, is characterized in that, the fusing point of described water-based rosin milk is 60～100 DEG C, and solid content is 50～55%, and viscosity is 100～500cps, and particle diameter is 150～300nm.
5. the aq. type sealing compound of the cigarette as described in claim 1 or 4, is characterized in that, described water-based rosin milk adopts any one or two kinds of mixture in Gum Rosin, staybelite resin, ester gum resin.
6. cigarette as claimed in claim 1 aq. type sealing compound, is characterized in that, described aqueous promoter is made up of water-based defoamer and water-borne preservative; Wherein, water-based defoamer adopts mineral oil defoaming agent, and its consumption is 0.1～0.3% of whole raw material weights except aqueous promoter weight; Water-borne preservative adopts isothiazole ketone, and its consumption is 0.1～0.2% of whole raw material weights except aqueous promoter weight.
7. a preparation method for aq. type sealing compound, is characterized in that, comprises the following steps:
Get each raw material by the sealing compound formula of claim 1 to 6 any one;
The mixing of composite emulsion: at 65 DEG C～75 DEG C temperature, vinyl acetate between to for plastic-n-butyl maleate emulsion is put in aqueous acrylic emulsion, stirred 25min～35min and form mixed emulsion; Water-based rosin milk is joined in mixed emulsion, continue to stir 25min～35min;
Aftertreatment: by described polymerization kettle temperature raising to 75 DEG C～85 DEG C, vacuumize, vacuum tightness is-0.02～-0.04MPa, keeps 60min under whipped state; Cool to below 50 DEG C, add aqueous promoter, adding deionized water to regulate solid content is 45～55%, and viscosity is 1000～2000cps, uses 100 order filtering nets to filter discharging, obtains aq. type sealing compound.
8. method as claimed in claim 7, is characterized in that, described aqueous acrylic emulsion makes in the following manner, comprising:
Adopt pre-emulsification seed emulsion polymerization, the deionized water of 40～50wt%, emulsifying agent and whole monomer are put in pre-emulsification still, stirring and emulsifying obtains pre-emulsion; The deionized water, the sodium bicarbonate buffer agent that in polymeric kettle, drop into 45～50wt%, be warming up to 70 DEG C～90 DEG C, adds the ammonium persulfate initiator solution that the pre-emulsion of 5～10wt% and the mass concentration of 20～30wt% are 10%, carries out seed reaction; Then drip the ammonium persulfate initiator solution that remaining pre-emulsion and remaining mass concentration are 10%, 3～4h drips off follow-up continuous insulation reaction 1～2h; Be cooled to 65 DEG C～75 DEG C, add tertbutyl peroxide and ferrous sulfate, carry out rear elimination reaction, remove residual Acrylic Acid Monomer, 65 DEG C～75 DEG C are continued insulation reaction 60min, and the polymer emulsion obtaining is aqueous acrylic emulsion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210568062.3A CN102977820B (en) | 2012-12-24 | 2012-12-24 | Water base type sealing rubber for tobacco and method for preparing water base type sealing rubber for tobacco |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210568062.3A CN102977820B (en) | 2012-12-24 | 2012-12-24 | Water base type sealing rubber for tobacco and method for preparing water base type sealing rubber for tobacco |
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| CN102977820B true CN102977820B (en) | 2014-07-09 |
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| CN106566458B (en) * | 2016-10-26 | 2019-10-29 | 上海乘鹰新材料有限公司 | Aqueous heat-seal adhesive composition of reversible thermochromic and preparation method thereof |
| CN106833452A (en) * | 2017-03-14 | 2017-06-13 | 韩志龙 | Aqueous environment protection cohesive force sealing compound high and preparation method thereof |
| CN113583597A (en) * | 2021-08-05 | 2021-11-02 | 嵊州市铭盛胶粘制品有限公司 | Preparation process of water-based sealing adhesive |
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| EP1721731A1 (en) * | 2005-05-13 | 2006-11-15 | Celanese Emulsions GmbH | Layered structure, method of its preparation and use |
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