CN102899963A - Latex composition and paper applying same - Google Patents
Latex composition and paper applying same Download PDFInfo
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- CN102899963A CN102899963A CN2012103987675A CN201210398767A CN102899963A CN 102899963 A CN102899963 A CN 102899963A CN 2012103987675 A CN2012103987675 A CN 2012103987675A CN 201210398767 A CN201210398767 A CN 201210398767A CN 102899963 A CN102899963 A CN 102899963A
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Abstract
The invention provides a latex composition which comprises an epoxy-based functional polymer, an epoxy-based reactive polymer and a proper amount of water, wherein the mass of the epoxy-based reactive polymer is 5-100 percent of the mass of the epoxy-based reactive polymer; the epoxy-based reactive polymer comprises an epoxy-based polymer and specifically comprises water-soluble polyfunctional epoxy resin, epoxy-based-modified organic reactive silicone, glycidol epoxy resin, aliphatic non-glycidyl epoxy resin and cycloaliphatic non-glycidyl epoxy resin; and the epoxy-based reactive polymer is a polymer containing at least one functional group of carboxyl, hydroxyl, hydrosulphonyl, anhydride, amine, amide, cyano group and ester group. The invention further provides paper applying the latex composition. The paper disclosed by the invention has high wet strength and wet press resistance; and after the paper is cured at low temperature, the ratio of wetness to dryness can be improved over 45 percent.
Description
Technical field
The present invention relates to a kind of latex composition and use the paper of this latex composition.
Background technology
Usually paper for daily use must make paper for daily use produce suitable pliability, thickness and percentage elongation through wrinkling processing, thereby meets consumer's instructions for use.The paper for daily use that uses in a humid environment needs paper for daily use to have enough moisture-resistant intensity and wet toughness usually, and so paper is difficult for being torn or poking.Paper for daily use is generally take wood fibre as basic material, but the easy moisture absorption of wood fibre causes paper strength to descend.Usually can adopt in paper and to add wet strength agent such as kymene increases its humidity-proof ability; It is wet strong also can to adopt the constituent that changes paper to increase, such as increasing the ratio of long fiber wood pulp in paper.But the limiting value that generally can improve wet-dry ratio is about 35%.
Except the said method increase is wet by force, under identical sheet basis weight, also available following two kinds of specific process further improve wet strong: (1) is by water-fast macromolecular compound handling of paper, latexes such as polyvinyl acetate, acrylate copolymer of water-fast macromolecular compound is sprayed or coats on the dried paper, behind hot setting latex macromolecule, promote paper wet strength and wet-dry ratio; (2) by adding water-insoluble long fiber (synthetic fiber, meldable fibre) in the batching of wood fibre, after the paper moulding, it is wet strong to reinforce the increase paper with high temperature.Yet above two kinds of specific process must rely on the special chemical drug of hot setting, technique, equipment, and not only investment is high, and consumes energy is large, complicated operation; And the easily generation qualitative change under high-temperature situation of the unstable component in the high molecular polymer, may produce peculiar smell, reduced the function of product, limited its range of application.
Summary of the invention
In view of this, be necessary that the latex composition that provides a kind of, this latex composition can significantly promote the wet strong of paper, and the low-temperature curable power consumption is little.
In addition, also be necessary to provide a kind of paper of using above-mentioned latex composition.
A kind of latex composition, it is in order to be formed on the base material body paper to improve the wet strong of base material body paper, this latex composition contains epoxy functional polymer, epoxy reaction polymer and an amount of water, and wherein the quality of epoxy functional polymer is 5% ~ 100% of epoxy reaction polymer quality; This epoxy functional polymer refers to contain the polymer of epoxy radicals, specifically comprises water-soluble poly official energy epoxy resin, the organic reaction silicone of epoxy radicals-modification, glycidyl epoxies, the non-glycidyl epoxies of aliphatic, the non-glycidyl epoxies of cycloaliphatic; This epoxy reaction polymer is the polymer that contains at least a functional group in carboxyl, hydroxyl, sulfydryl, acid anhydride, amine, acid amides, cyano group, the ester group.
A kind of paper of using above-mentioned latex composition, it comprises the base material body paper and is formed at least one lip-deep latex composition of base material body paper that this base material body paper is wrinkling paper for daily use.
Paper of the present invention has high humidity by force and wet crushing resistance, solidifies through low temperature (＜40 ° of C), and the wet-dry ratio of paper can be promoted to more than 45% by 25%.The latex composition that the present invention is used is because low-temperature curable, not only can save the crosslinked energy consumption of a large amount of latexes, avoided simultaneously the generation of side reaction under the high-temperature cross-linking (such as the generation of peculiar smell), and increase the thickness of paper, crushing resistance, wet toughness is done wet strong and wet-dry ratio, promote the quality of product, enlarged the Application Areas of product.
The specific embodiment
Latex composition of the present invention, it is formed on the base material body paper to improve the wet strong of base material body paper in order to the mode by dipping, coating or spraying.This latex composition contains epoxy functional polymer, epoxy reaction polymer and an amount of water, wherein the quality of epoxy functional polymer be the epoxy reaction polymer quality 5% ~ 100%.The addition of water can add according to desired concn on the production technology.
This epoxy functional polymer refers to contain the polymer of epoxy radicals, specifically comprises water-soluble poly official energy epoxy resin, the organic reaction silicone of epoxy radicals-modification, glycidyl epoxies, the non-glycidyl epoxies of aliphatic, the non-glycidyl epoxies of cycloaliphatic.Wherein this water-soluble poly official energy epoxy resin comprises the wet-strength resins of polyamine-chloropropylene oxide condensation under alkali condition.This glycidyl epoxies comprises glycidyl ether, glycidyl esters and glycidyl polyimide resin.
The epoxy radicals number of epoxy functional polymer is more many more to strengthen crosslinked degree, but viscosity also increases thereupon, therefore the number of epoxy radicals needs to adjust by the final products demand in the epoxy functional polymer, the epoxy functional polymer that is specially adapted to wrinkling paper for daily use comprises daiamid epoxy chloropropane class wet strength agent, the epichlorohydrin resins of the Kymene series of producing such as Hercules Inc..
This epoxy reaction polymer is the polymer that contains at least a functional group in carboxyl, hydroxyl, sulfydryl, acid anhydride, amine, acid amides, cyano group, the ester group, and preferred functional group is carboxyl and alcohol radical.These functional groups and epoxy radicals have high reaction activity.
This epoxy reaction polymer is mixed by different proportion by two kinds and above single monomer polymer, or forming multiple copolymer by two kinds and above monomer copolymerization forms.Preferably, this multiple copolymer is formed by two kinds of copolymerization in acrylic acid, vinyl acetate, the styrene three class monomers at least, can adjust the percentage of these three kinds of monomers by reactive and hydrophilic needs and make different copolymers, Henkel Adhensin 3020R for example, BASF Basonal 1000ap, Celanese X-LINK 2819.
Consist of carboxylic epoxy reaction polymer monomer whose and comprise the dicarboxylic acids that acrylic acid, methacrylic acid, fumaric acid, maleic acid and carboxyl link to each other with unsaturated carbon, and acrylic acid and methacrylic acid monomer comprise acrylic acid and methacrylic acid and lower alkyl esters and aromatic derivant.The monomer that consists of carboxylic epoxy reaction polymer is preferably acrylic acid and methacrylic acid.And the quality that consists of the monomer of carboxylic epoxy reaction polymer accounts for greatly 1% ~ 50% of latex composition quality.Aforesaid propylene acid and methacrylic acid monomer comprise acrylic acid and methacrylic acid and lower alkyl esters and aromatic derivant.
Further, optionally be added with other functional aids in this latex composition, such as wetting agent, thickener, dispersant, filler etc.; These functional aids are the habitual of conventional field of papermaking latex, and its concrete composition will not describe in detail in present patent application.
Prepare this latex composition of the present invention, can first the epoxy functional polymer be transferred to pH〉7, then with epoxy functional polymer and the reaction of epoxy reaction mixed with polymers, optionally add again other functional aids, wetting agent for example, thickener, dispersant, then fillers etc. stir the preparation that can finish latex composition more than the 30min.Also can not regulate the pH of epoxy functional polymer directly with epoxy functional polymer and epoxy reaction mixed with polymers, do not regulate also can increase wet strong, but regulate epoxy radicals functional polymer's pH to increase effects more remarkable for 7 rear wet strengths.
Paper of the present invention comprises the base material body paper and makes an addition at least one lip-deep latex composition of base material body paper.Latex composition can adopt different addition manners to add base material body paper surface, and single or double, addition manner comprise dipping, coating, spraying etc.In this paper the quality of dried latex composition be the base material body paper quality 3% ~ 30%.
Base material body paper after latex composition is processed places under the room temperature (＜40 ℃) and dries, and wet strength can reach latex composition and solidify 85%～100% of rear paper wet strength fully in 48 hours.After drying at room temperature was solidified, the paper wet strength can be increased to 2 ~ 4 times of base material body paper, and the wet-dry ratio that wet-dry ratio can be promoted to 45%～50%(base material body paper is about 25%).Such as product needed, reach product requirement for guaranteeing final Paper Moisture, the paper after the processing adopts the drying processes such as gas is dried, electricity is done.
Base material body paper of the present invention is wrinkling paper for daily use, and it is take string as main raw material.Preferably, the basic weight of this base material body paper is 10～75gsm, preferred basis weights is 12～50gsm, need not contain at high proportion long fine (long fine ratio＜30%) in the base material raw paper pulp, this base material raw paper pulp optionally adds with respect to base material body paper weight ratio and is 1%～5% conventional wet strength agent (such as kymene) or does not add wet strength agent, make through overmolding, drying and techniques such as wrinkling (doing wrinkling or wet wrinkling), the wet-dry ratio of base material body paper is less than 35%.
Paper of the present invention has high humidity by force and wet crushing resistance, solidifies through low temperature (＜40 ° of C), and the wet-dry ratio of paper is promoted to more than 45%.The latex composition that the present invention is used is because low-temperature curable, not only can save the crosslinked energy consumption of a large amount of latexes, avoided simultaneously the generation of side reaction under the high-temperature cross-linking (such as the generation of peculiar smell), and increase the thickness of paper, crushing resistance, wet toughness is done wet strong and wet-dry ratio, promote the quality of product, enlarged the Application Areas of product.
Come the present invention is specifically described below by embodiment.
Embodiment 1
(1) selecting daiamid epoxy chloropropane base polymer Kymene 557H(solid content is 12.5%) as the epoxy functional polymer, esters of acrylic acid mixture Henkel Adhesin 3020R(is moisture, solid content is 50%) as the epoxy reaction polymer, pH with Kymene 557H transfers to 7 first, then in the solid content ratio of 1:3 the two is mixed, add deionized water, be made into solid content and be 10% latex composition after, stir 30min and make its abundant mixing.
(2) selecting basic weight is 30g/cm
2, wet-dry ratio is that 25% wrinkling paper for daily use is the base material body paper, this base material body paper is manufactured paper with pulp and has been added 1.9% daiamid epoxy chloropropane class wet strength agent in the process.
(3) adopt infusion process to add the latex composition for preparing to the base material body paper, latex composition adds than being 12% with respect to the quality of base material body paper, and paper places under the room temperature and dries after processing, and places 48 hours or curing 5 seconds under 120 ℃ of conditions.Experiment is learnt that this latex composition solidifies and can be reached more than 85% of final paper wet strength in 5 seconds under 120 ℃ of conditions.
Comparative Examples 1
In addition will apply the epoxy reaction polymer (esters of acrylic acid mixture Henkel Adhesin 3020R) that embodiment 1 uses with same base material body paper among the embodiment 1, as a comparison case 1.
Embodiment 1 and Comparative Examples 1 prepared paper after base material body paper, the curing are cut into 3 inches sizes of 1 inch *, adopt the Zwick/Roell tensiometer to measure the dried wet strength of paper.Test result as shown in Table 1.
Table one
As shown in Table 1: compare with the paper that Comparative Examples 1 applies conventional Adhesin 3020R, the dry strength of paper under room temperature and high temperature that applies the latex composition among the embodiment 1 all has small size lifting, wet strength under room temperature and high temperature all has significantly lifting, and the CD wet-dry ratio under room temperature and high temperature all significantly promotes.
And from table one as can be known: the final wet strength of paper is near (1121 vs 1100) after room temperature treatment and the 120 ℃ of processing, show that latex composition used in the present invention can reduce latex composition and solidify required heat energy on technique, reduce the cost of producing upper energy, also can bring into play function in carbon reduction.
Embodiment 1 prepared paper and base material body paper carry out compression test.The compression test step is that the test paper is cut into the 10cm*10cm size, take 20 as one group, adopt the dried wet thickness of vernier caliper measurement quires, the contained emulsion of individual l Water Paper heavily is heavy 2.5 times of dried paper, under 0.01psi pressure, measure quires initial thickness (step 1), then remove pressure after it being applied 0.1psi pressure 30s, to measure quires thickness (step 2) under the 0.01psi pressure, again under 0.01psi pressure, measure quires thickness (step 3) behind the release of pressure 5min again.The result is as shown in Table 2:
Table two
As shown in Table 2: compare with the base material body paper, the wet toughness of paper that applies the latex composition among the embodiment 1 strengthens, and is difficult for being crushed, and improves paper possibility of wiping repeatedly under Humid Status.
Embodiment 2-4
(1) selecting daiamid epoxy chloropropane base polymer Kymene 557H(solid content is 12.5%) as the epoxy functional polymer, esters of acrylic acid mixture Henkel Adhesin 3020R(is moisture, solid content is 50%) as the epoxy reaction polymer, pH with Kymene 557H transfers to 7 first, then respectively by the quality of epoxy functional polymer be the epoxy reaction polymer quality 20%, 50%, 100% ratio is mixed the two, add deionized water, after being made into solid content and being 10% latex composition, stir 30min and make its abundant mixing make three kinds of latex compositions, these three kinds of latex compositions are corresponding embodiment 2 respectively, embodiment 3 and embodiment 4 latex compositions.
(2) selecting basic weight is 30g/cm
2, wet-dry ratio is that 25% wrinkling paper for daily use is the base material body paper, this base material body paper is manufactured paper with pulp and has been added 1.9% daiamid epoxy chloropropane class wet strength agent in the process.
(3) adopt infusion process to add respectively the latex composition of the embodiment 2-4 for preparing to the base material body paper, latex composition adds than being 15% with respect to the quality of base material body paper, processes afterwards paper and places under the room temperature and dry, and places 48 hours.
3 groups of paper after solidifying are cut into 3 inches sizes of 1 inch *, adopt the Zwick/Roell tensiometer to measure the dried wet strength of paper.Test result as shown in Table 3.
Table three
As shown in Table 3: the base material body paper among the embodiment 2-4 after latex composition is processed places under the room temperature (＜40 ℃) and dries, and wet strength can be increased to more than 3 times of base material body paper in 48 hours, wet-dry ratio can be promoted to 45% and more than.
In addition, those skilled in the art also can make various modifications, interpolation and the replacement on other form and the details in claim of the present invention scope of disclosure and spirit.Certainly, these all should be included within the present invention's scope required for protection according to the variations such as various modifications, interpolation and replacement that spirit of the present invention is made.
Claims (11)
1. latex composition, it is in order to be formed on the base material body paper to improve the wet strong of base material body paper, it is characterized in that: this latex composition contains epoxy functional polymer, epoxy reaction polymer and an amount of water, wherein the quality of epoxy functional polymer be the epoxy reaction polymer quality 5% ~ 100%; This epoxy functional polymer refers to contain the polymer of epoxy radicals, specifically comprises water-soluble poly official energy epoxy resin, the organic reaction silicone of epoxy radicals-modification, glycidyl epoxies, the non-glycidyl epoxies of aliphatic, the non-glycidyl epoxies of cycloaliphatic; This epoxy reaction polymer is the polymer that contains at least a functional group in carboxyl, hydroxyl, sulfydryl, acid anhydride, amine, acid amides, cyano group, the ester group.
2. latex composition as claimed in claim 1 is characterized in that: this water-soluble poly official can epoxy resin comprises the wet-strength resins of polyamine-chloropropylene oxide condensation under alkali condition; This glycidyl epoxies comprises glycidyl ether, glycidyl esters and glycidyl polyimide resin.
3. latex composition as claimed in claim 1 is characterized in that: this epoxy reaction polymer is mixed by different proportion by two kinds and above single monomer polymer, or forming multiple copolymer by two kinds and above monomer copolymerization forms.
4. latex composition as claimed in claim 3, it is characterized in that: this multiple copolymer is formed by two kinds of copolymerization in acrylic acid, vinyl acetate, the styrene three class monomers at least.
5. latex composition as claimed in claim 3, it is characterized in that: consist of carboxylic epoxy reaction polymer monomer whose and comprise the dicarboxylic acids that acrylic acid, methacrylic acid, fumaric acid, maleic acid and carboxyl link to each other with unsaturated carbon, and acrylic acid and methacrylic acid monomer comprise acrylic acid and methacrylic acid and lower alkyl esters and aromatic derivant.
6. latex composition as claimed in claim 1 is characterized in that: also optionally be added with at least a in other functional aids in this latex composition, other functional aids comprise wetting agent, thickener, dispersant, filler.
7. latex composition as claimed in claim 1, it is characterized in that: the preparation of this latex composition transfers to pH with the epoxy functional polymer in advance〉7, then with epoxy functional polymer and epoxy reaction mixed with polymers.
8. an application rights requires the paper of the described latex composition of any one among the 1-7, and it comprises the base material body paper and be formed at least one lip-deep latex composition of base material body paper that this base material body paper is wrinkling paper for daily use.
9. paper as claimed in claim 8 is characterized in that: in this paper the quality of dried latex composition be the base material body paper quality 3% ~ 30%.
10. paper as claimed in claim 8, it is characterized in that: this base material body paper is take string as main raw material.
11. paper as claimed in claim 10, it is characterized in that: the basic weight of this base material body paper is between 10～75gsm, long fine mass content percentage＜30% in the base material raw paper pulp, and to be added with base material body paper weight ratio in the base material raw paper pulp be 1%～5% wet strength agent or do not add wet strength agent, make through overmolding, drying and creping, the wet-dry ratio of base material body paper is less than 35%.
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| CN2012103987675A CN102899963A (en) | 2012-10-18 | 2012-10-18 | Latex composition and paper applying same |
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| CN2012103987675A CN102899963A (en) | 2012-10-18 | 2012-10-18 | Latex composition and paper applying same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114045702A (en) * | 2021-11-18 | 2022-02-15 | 广东科力德新材料有限公司 | Recyclable degradable high-molecular emulsion capable of replacing PE paper lamination |
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| CN1510094A (en) * | 2002-12-26 | 2004-07-07 | 梅 孙 | Adhesive agent preparing method |
| CN1845966A (en) * | 2003-09-02 | 2006-10-11 | 金伯利-克拉克环球公司 | Low odor binders curable at room temperature |
| CN101225624A (en) * | 2008-01-29 | 2008-07-23 | 陕西科技大学 | Method for preparing corrugated medium circling pressure strengthening agent by employing cation epoxy resin |
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- 2012-10-18 CN CN2012103987675A patent/CN102899963A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1510094A (en) * | 2002-12-26 | 2004-07-07 | 梅 孙 | Adhesive agent preparing method |
| CN1845966A (en) * | 2003-09-02 | 2006-10-11 | 金伯利-克拉克环球公司 | Low odor binders curable at room temperature |
| CN101225624A (en) * | 2008-01-29 | 2008-07-23 | 陕西科技大学 | Method for preparing corrugated medium circling pressure strengthening agent by employing cation epoxy resin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114045702A (en) * | 2021-11-18 | 2022-02-15 | 广东科力德新材料有限公司 | Recyclable degradable high-molecular emulsion capable of replacing PE paper lamination |
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Application publication date: 20130130 |