Essentially anhydrous sizing composition, aqueous sizing composition, methods for its preparing and applying

FIELD: gluing and sizing compositions.

SUBSTANCE: invention relates to the essentially anhydrous sizing composition and an aqueous sizing composition used in sizing paper and cardboard. Essentially anhydrous and an aqueous sizing compositions comprise gluing substance, non-ionogenic surface-active substance, an anionic surface-active substance and a monohydric alcohol. Method for preparing an aqueous composition involves homogenization of gluing substance in the presence of surface-active substances and monohydric alcohol. Invention provides preparing sizing compositions that can be homogenized easily, i. e. they represent dispersions or emulsions formed by application of insignificant shearing forces, for example, such as stirring and provides preparing sizing compositions that are stable in storage.

EFFECT: improved preparing method, improved and valuable properties of compositions.

15 cl, 6 tbl, 3 ex

 

DESCRIPTION

The present invention relates to an essentially anhydrous composition and the aqueous sizing composition comprising an adhesive substance, a nonionic surfactant, anionic surfactant and a monohydroxy alcohol. In addition, the invention encompasses the use of such compositions for sizing in the mass or surface sizing of paper or paperboard and method for producing a water dispersion.

BACKGROUND of INVENTION

An adhesive substance used in the manufacture of paper and cardboard to obtain products which have improved resistance to penetration of aqueous solutions. Adhesive is not added as such to the pulp suspension, but add in the form of emulsions or dispersions. Because adhesives are typically hydrophobic, when homogenization are compounds that facilitate the formation of the dispersion. Homogenization carried out by mixing adhesives, dispersing vehicle or vehicles at high effort shift, which is applied when using the homogenization of high-pressure equipment.

There are a large number of different adhesives, which can be divided into two groups, namely an adhesive substance, not reacts with cellulose, and an adhesive substance that reacts with a what Ulusoy, moreover, suppose that the latter forms a covalent bond with the cellulose fibers.

Adhesive that reacts with cellulose, however, does not only react with the cellulose fiber suspension, but also interact with aqueous solutions, i.e. with a water content of the dispersion, thus being subject to hydrolysis, which ultimately leads to a decrease in the number of active adhesive that reacts with cellulose. Accordingly, the stability of aqueous dispersions or emulsions comprising an adhesive substance that reacts with the cellulose, thus limited.

GB 2122656 discloses a sizing composition comprising a carboxylic acid anhydride and polyoxyalkylene nonionic surfactant blocked by groups of lower alkyl, acyl or carbamoyl and/or alkaline earth metal of the anionic surfactant containing sulfur.

US 4376177 refers to the sizing of the woven product with the use of adhesive compounds.

EP 984101 relates to sizing compositions containing an adhesive substance and organic complexing agents.

WO 9749865 reveals ASA sizing emulsions containing cationic polymer mixture of a water-soluble cation of yogena with low molecular weight and high-molecular Katie the aqueous polyethylene, in addition, the emulsion also contains a surfactant.

US 5059675 relates to compositions for sizing the surface containing the reaction product of melamine formaldehyde compounds with long-chain saturated or unsaturated alcohol and polyethoxylated alcohol.

One purpose of the present invention is thus the provision of a sizing composition, which would be easy gomogeniziruetsya, i.e. dispersion or emulsion formed by only applications minor shear forces, such as smooth mixing.

Another objective of the present invention is to provide stable during storage sizing compositions.

Further goals mentioned below in the description.

DETAILED description of the INVENTION

In accordance with the present invention discovered that essentially anhydrous sizing composition and the aqueous sizing composition include an adhesive substance, a nonionic surfactant, anionic surfactant and a monohydroxy alcohol. Additionally, the present invention also relates to the use of a composition for sizing in the mass or surface sizing of paper or paperboard and method for producing a water dispersion comprising homogenization of adhesive in the presence of nonionic is Evernote-active substances, anionic surfactants and monohydroxy alcohol.

An adhesive substance that is present in the sizing composition may represent reacts with cellulose tools including resin, i.e. disproportionately resin, gidrirovannoe resin, the cured resin, the resin is treated with formaldehyde, etherified resin, utverzhdennuyu resin and mixtures of such treatments and thus processed resins; fatty acids and their derivatives, for example esters and amides of fatty acids as bacteremic, resin and its derivatives, such as hydrocarbon resins, acid resins, esters and amides of resins, waxes, such as raw and refined paraffin waxes, synthetic waxes, natural waxes, etc. and/or reacts with cellulose funds. Preferably, the adhesive is an adhesive that reacts with cellulose. Reacts with cellulose adhesive included in the sizing dispersion can be selected from any medium that reacts with cellulose, known in the technical field. Accordingly, an adhesive substance selected from the group consisting of hydrophobic ketene dimer, multimers of ketene, acid anhydrides, organic isocyanates, carbamoylation and mixtures thereof, preferably di the development of ketene and anhydrides of the acids, most preferably the ketene dimer. Preferred ketene dimers have the General formula (I)below, where R1and R2represent a saturated or unsaturated unbranched or branched hydrocarbon groups, hydrocarbon groups have from 8 to 36 carbon atoms, usually representing an alkyl group having from 12 to 20 carbon atoms, such as hexadecyne and octadecyl group. In a preferred variant embodiment of the dimer Ketanov are liquid at ambient temperature, i.e. at 25°acceptable, at 20°while R1and/or R2respectively are unsaturated alkyl group having 12-20 carbon atoms, for example, oleic group or shorter alkyl group with 8-18 carbon atoms.

Suitable anhydrides of acids may be characterized by the General formula (II)below, where R3and R4may be identical or different and represent saturated or unsaturated hydrocarbon group, respectively, contain from 8 to 30 carbon atoms, or R3and R4together with-C-O-C fragment can form a 5-6-membered ring, optionally further substituted hydrocarbon groups containing up to 30 carbon atoms. Examples of anhydrides of acids for commercial use of the project include alkyl and alkeneamine succinic anhydrides and especially isooctylphenyl anhydride.

Suitable dimer katenov, acid anhydrides, organic isocyanates include compounds disclosed in U.S. patent No. 4522686, which thus included in this description by reference. Examples of suitable carbamoylation include compounds disclosed in U.S. patent No. 3887427, which is also included in this description by reference.

Nonionic surfactant included in the composition or dispersion is preferably polyoxyalkylene connection, which may include a hydrophobic fragment having at least 8 carbon atoms, especially 8 to 36 carbon atoms. The hydrophobic part may contain other atoms other than carbon and hydrogen, because the fragment has an overall hydrophobic character. The hydrophobic part may be branched, unbranched saturated or unsaturated hydrocarbon, containing suitable aromatic functionality, such as an aromatic ring system or condensed aromatic ring system, and these aromatic systems are part of the main hydrocarbon structure or are side groups linked to a branched or unbranched main hydrocarbon structure. Before occhialino, hydrophobic fragment is an unbranched saturated hydrocarbon chain, which may contain from 8 to 36 carbon atoms, suitable from 10 to 20 carbon atoms and most preferably from 10 to 15 carbon atoms. Polyoxyalkylene compound may contain only one type of repeating unit accelerated or different unit types accelerated represented by the formula (1) R1Oh, where R1is a hydrocarbon group having 2-4 carbon atoms. Polyoxyalkylene connection can have from 2 to 30 units of alkalinized of the same type or of different types, usually from 5 to 10 units of accelerated and preferably from 5 to 8 units accelerated. Most preferably, polyoxyalkylene compound contains units of ethylene oxide and/or propylene oxide, respectively, only units of ethylene oxide in an amount of 5 to 10 units of ethylene oxide, preferably from 5 to 7 units of ethylene oxide. The mass-average molecular mass polyoxyalkylene connection can be up to 4000, preferably from 200 to 2300. Polyoxyalkylene the connection can be represented by the formula (2) R2-[-(R3O)n-]-H, where R2represents a hydrophobic fragment, as defined above, respectively, an unbranched alkyl group containing from 8 to 36 carbon atoms, R3/sub> represents an ethylene group and n is a number from 2 to 30. Preferably, polyoxyalkylene compound selected from the group including undecyloxy ether, Tetra(ethylene glycol), undecyloxy ether Penta(ethylene glycol), undecyloxy ether hexa(ethylene glycol), undecyloxy ether hepta(ethylene glycol) and undecylenic ester DECA(ethylene glycol).

The present composition also includes a monohydroxy alcohol. Monohydroxy alcohol is considered alcohol containing one alcohol group. Preferably, the monohydroxy alcohol is a fatty alcohol that acts as an amphiphilic compound, to facilitate homogenization. Can be used any fat group associated with alcohol function because monohydroxy alcohol has a weak surface-active character or is surface-active. Monohydroxy alcohol may contain at least 4 carbon atoms, suitable from 4 to 20 carbon atoms, and the carbon atoms can form an unbranched, branched or ring hydrocarbon group. The hydrocarbon group may be saturated or unsaturated, optionally containing aromatic system. Preferably, the monohydroxy alcohol is a fatty alcohol having the formula (3) R4-OH, where R4represents a saturated or unsaturated carbohydrate is native group, containing suitable from 4 to 20 carbon atoms, preferably from 8 to 16 carbon atoms, most preferably from 10 to 14 carbon atoms. More preferably R4represents a saturated hydrocarbon group such as an alkyl group having from 4 to 20 carbon atoms. Monohydroxy alcohol can be selected from the group comprising 1-butanol, 2-methyl-1-propanol, 2-butanol, 2-methyl-2-propanol, 1-pentanol, 2-pentanol, 3-pentanol, 2-methyl-1-butanol, 3-methyl-1-butanol, 2-methyl-2-butanol, 3-methyl-2-butanol, 2,2-dimethyl-1-propanol, 1-hexanol, 2-methyl-1-pentanol, 4-methyl-1-pentanol, 4-methyl-2-pentanol, 2-ethyl-1-butanol, 1-heptanol, 2-heptanol, 3-heptanol, 4-heptanol, 2,4-dimethyl-3-pentanol, 1-octanol, 2-octanol, 2-ethyl-1-hexanol, 3,5-dimethyl-1-hexanol, 2,2,4-trimethyl-1-pentanol, 1-nonanol, 5-nonanol, 3,5-dimethyl-4-heptanol, 2,6-dimethyl-4-heptanol, 3,5,5-trimethyl-1-hexanol, 1-decanol, 1-undecanol, 1-dodecanol, 2,6,8-trimethyl-4-nonanol, 1-tridecanol, 1-tetradecanol, 1-pentadecanol, 1-hexanol, 1-heptadecanol, 1-octadecanol, 1-nonadienal, 1-eicosanol, 1-hexacosanol.

In accordance with the present invention, the composition also includes an anionic surfactant. Suitable for anionic surfactant represented a sulfur-containing anionic surfactant, which may be in the form of salts saloon the earth metals, such as type, sulfonic acid type or sulfate esters. The anionic surfactant may constitute, for example, alkylbenzenesulfonic acid having at least one branched or remotemachine alkyl group indicated an alkyl group typically contains from 6 to 22 carbon atoms, suitable from 10 to 18 carbon atoms, such as dodecylbenzenesulfonic acid and undeliberately acid. In addition, anionic surfactants can include alpha-olefinchemie acid, usually containing from 8 to 20 carbon atoms, preferably from 10 to 18 carbon atoms and more preferably 12 to 16 carbon atoms; sulfosuccinate esters, i.e. esters sulfonterol acids and alcohols, typically alcohols, containing from 6 to 20 carbon atoms, represented by diallylmalonate, such as di-2-ethylhexylphthalate and dicyclohexylcarbodiimide, such as dicyclohexylphosphino; naphthalenesulfonate acid and alkylnaphthalene acid having at least one alkyl group containing 1-18 atoms carbon, as diisopropylnaphthalene acid, as well as condensation products of these compounds with formaldehyde with a suitable degree of polycondensation, equal to from 1 to 20, prepact the tion from 1 to 8; alkanesulphonic acid, generally comprising from 8 to 20 carbon atoms represented tetradecylammonium acid; and sulfonic acid amide of the fatty acid, usually containing from 10 to 20 carbon atoms, such as N-methyl-realamateurtube acid, petroleum sulfonic acid, ligninsulfonate acid, mentioned just a few.

Suitable sulfate esters include alkyl sulphates, such as sulfate esters remotemachine and/or branched saturated and/or unsaturated alcohols suitable containing from 6 to 20 carbon atoms, preferably 12-18 carbon atoms, represented by decylsulfate, dodecyl sulfate, sulfates of ketaspire having 11 to 12 carbon atoms, with the content of the side chain of 50% or more sulfated alpha-olefins, usually having from 12 to 18 carbon atoms. Polyoxyethyleneglycol, i.e. sulfate esters of alkylenediamines remotemachine and/or branched saturated and/or unsaturated alcohols, generally having from 6 to 20 carbon atoms, containing usually 2 to 50 moles, preferably 2 to 20 moles of alkylenediamines per mole of alcohol, such as sulfates delovogo alcohol-EO(1), lauric alcohol-EO(4) and cetyl alcohol-EO(8); sulfates polyoxyethylenesorbitan esters, i.e. sulfate esters of alkylene is adductive ALKYLPHENOLS, having at least one alkyl group, suitable containing from 8 to 12 carbon atoms, containing usually 2 to 50 moles, preferably 2 to 20 moles of alkylene per mole of phenol, such as ester sulfate Nonylphenol-EO(2). Sulfates of fatty esters, i.e. sulfates of saturated and/or unsaturated esters of fatty acids having from 10 to 20 carbon atoms, such as mono-, di - and triglycerides, and lower and higher alkyl esters represented by the sulfates of monoglycerides, i.e. sulfate monoglycerides of fatty acids of coconut oil, sulfated oils such as bright red oil, sulfated esters of fatty acids, as sulfated methyl oleate. Preferably, anionic surfactants are alcylaryl sulfonic acid or alcantarilla sulfonic acid, such as alkylbenzenesulfonate acid, where the alkyl group can be linear or branched, preferably branched, containing from 6 to 20 carbon atoms, more preferably from 8 to 14 carbon atoms. The mass-average molecular weight of the anionic surfactant is usually from 200 to 2000, suitable from 200 to 600, preferably from 200 to 400.

The present invention related to a sizing composition comprising an adhesive in the society, non-ionic surfactant, anionic surfactant and a monohydroxy alcohol, may also include additional compounds, such as synthetic and/or natural polymers, i.e. polyelectrolytes having a net anionic or cationic charge. Such polymers are, for example, polysaccharides, such as starch, condensation polymers, such as polyamine and polymers chain reaction, similar to the polymers of the vinyl connection.

The amount of adhesive that is included in essentially anhydrous composition can vary from 70 to 99 wt.% of the total weight of the composition, suitable from 75 to 90 wt.% and, most preferably, from 80 to 90 wt.%. The definition of "essentially anhydrous composition" means that there may be a slight amount of water or any other aqueous solution, because the stability of the sizing composition does not deteriorate significantly, preferably less than 5 wt.%, more preferably, less than about 1 wt.%. The storage stability will naturally increase with decreasing water content in the composition, thus, most preferably, the composition was anhydrous. The amount of adhesive in the aqueous composition can vary from 1 to 50 wt.% by weight of the total composition, preferably from 3 to 45 wt is.% and, most preferably, from 25 to 45 wt.% of the total weight of the composition.

The amount of nonionic surfactant present in the composition, i.e. essentially anhydrous and aqueous compositions may be from 0.5 to 20 wt.% per (dry) adhesive, preferably, from 5 to 15 wt.% and, most preferably, from 5 to 10 wt.%.

The amount of anionic surface-active substances in anhydrous and aqueous composition ranges from 0.5 to 10 wt.% in the calculation of the adhesive, suitable from 2 to 5 wt.%.

The amount of monohydroxy alcohol contained in the compositions may vary from 0.5 to 20 wt.% in the calculation of the adhesive, suitable, from 5 to 10 wt.%.

In General, the amount of non-ionic surfactants, anionic surfactants and monohydroxy alcohol, respectively, included in the composition is chosen in such a way as to give the composition of the optimal properties in terms of their ability to emulsification and sizing action for suspension of the pulp.

In accordance with one preferred embodiment of the present invention, the mass ratio of nonionic surfactant to anionic surfactant in a substantially anhydrous and aqueous composition is in the interval for the Les from 10:1 to 1:10, more preferably, in the range of from 7:1 to 1:3 and most preferably in the range 5:1 to 1:2.

Dispersion of the present invention can be used as adhesives according to the standard technique in the production of paper using any type of cellulose fibers, and the composition can be used for sizing the surface and internal sizing. Assume that the term "paper"as used herein includes not only paper, but also all types of products based on cellulose in the form of a sheet and cloth, including, for example, cardboard and managementon. A sizing composition can be added to any material containing cellulose fibers, optionally, in combination with mineral fillers, and, usually, the content of the cellulose fibers is at least 50 wt.%, in the calculation of dry weight. Examples of mineral fillers common types include kaolin, China clay, titanium dioxide, gypsum, talc, natural and synthetic calcium carbonates such as chalk, crushed marble and precipitated calcium carbonate.

The amount of adhesive added to the mass, may be from 0.01 to 5 wt.%, suitable from 0.05 to 1.0 wt.% calculated on dry weight of cellulosic fibres and optional fillers, and the dosage depends mainly on the quality of the pulp or paper sizing, the applied adhesive and the desired level sizing.

The invention is further illustrated by the following examples, which, however, are not limiting.

Example 1

The emulsion in this example, get by adding the essentially anhydrous composition of the dimer of alkylbetaine (AKD), non-ionic surfactants, anionic surfactants and monohydroxy alcohol to water having a temperature of 60°C. the resulting aqueous mixture was stirred at 60°C for approximately 30 minutes (magnetic stirrer at approximately 400 rpm). In all compositions (emulsions) used AKD standard purity, obtained from Eka Chemicals AB. Specific surfactants and alcohol, as well as the ratio of (number)present in the compositions shown in table 1.

Measure the stability and particle size of the emulsions. Stability is assessed by measuring the height of a layer of the cream poured emulsions after storage at 60°within one hour after emulsification in flat-bottomed test tube. In table 1 the stability is indicated by a number from 1 to 5, where 1 indicates poor stability of the emulsion, and 5 - on a good emulsion stability.

The particle size of the emulsions is measured by the instrument Malvern Mastersizer Microplus to determine laser diffraction with misciagna dispersion. Before measuring the emulsion is diluted by addition of one volume part emulsion to 100 parts of water, and the temperature of the emulsion and water is 60°C. the Results of measurement of particle size is represented as D(50%) and D(90%), showing the maximum diameters of 50% and 90% of the particles, respectively (table 2).

Table 1
Test No.the mass ratio of AKD:alcoholAndmonohydroxy alcoholthe mass ratio of surfactant:oilInnonionic surfactantanionic surfactantthe mass ratio of the nonionic surfactant:anionic surfactant
190:10dodecyloxy alcohol5:95undecylenic ester DECA(ethylene glycol)extensive dodecylbenzenesulfonate calcium5:1
290:10dodecyloxy alcohol10:90undecylenic ester DECA(ethylene glycol)extensive dodecylbenzenesulfonate calcium5:1
390:10dodecyloxy alcohol10:90 undecyloxy ether Penta(ethylene glycol)extensive dodecylbenzenesulfonate calcium5:1
490:10dodecyloxy alcohol10:90undecyloxy ether hexa(ethylene glycol)extensive dodecylbenzenesulfonate calcium3:1
590:10dodecyloxy alcohol10:90undecyloxy ether hexa(ethylene glycol)extensive dodecylbenzenesulfonate calcium5:1
690:10dodecyloxy alcohol10:90undecyloxy ether hepta(ethylene glycol)extensive dodecylbenzenesulfonate calcium3:1
790:10dodecyloxy alcohol10:90undecyloxy ether hepta(ethylene glycol)extensive dodecylbenzenesulfonate calcium5:1
890:10dodecyloxy alcohol10:90undecyloxy ether hexa(ethylene glycol)extensive dodecylbenzenesulfonate calcium1:1
990:10dodecyloxy alcohol10:90undecyloxy the IDF hexa(ethylene glycol) extensive dodecylbenzenesulfonate calcium2:1
A)in this case, the alcohol means monohydroxy alcohol

C)in this case, the oil includes AKD and monohydroxy alcohol, and the surfactant includes anionic and non-ionic surface-active agent.

Table 2

The particle size and stability
Test No.StabilityParticle size, microns
D(v, 0,5)D(v, 0,9)
14948
24852
34527
45522
54629
65522
74629
84730
95522

Example 2

The particle size and stability

Receive, as described in example 1, the ve emulsion, containing equal amounts by weight of 7.23 g of the dimer of alkylbetaine, 0,67 g manongarivo ether hexa(ethylene glycol) (C11E6) and 0.34 g of dodecylbenzenesulfonate calcium (Ca-DBS, 65% active ingredient). However, one emulsion, designated herein as emulsion 1 (in accordance with the invention, also contains 0,80 g dolezelova alcohol. Emulsion 1, in addition, contains 16,04 g of water, while the emulsion 2 (not containing dodecyloxy alcohol) contains at 16.84 g of water. Stability and particle size of the emulsions was measured as described in example 1. The results are shown in tables 3 and 4.

Table 3

Particle size*
EmulsionD(v, 0,5) mmD(v, 0,9) mm
117,8437,39
236,8378,89
*Borodulina for measuring particle size is identical to the equipment used in example 1.

Table 4

The stability of the emulsion
EmulsionThe height of the emulsion (mm)The height of the transparent phase (mm)Ratio (height emulsion/total height)
131 20,94
218150,55

Apart from particle size and stability, internal sizing action further evaluate the bonding of a standard mixture of 80 wt.% pulp birch/pine (60/40, 200 CSF), 20 wt.% calcium carbonate and having a pH 8,44. Apply retention system includes a cationic starch and colloidal solution of silicon dioxide. The results of the bonding emulsions 1 and 2 can be seen from table 5. The emulsion is added to the mass of 3 kg AKD/ton of dry pulp.

Table 5

Sizing properties
EmulsionCobb 60
without adding a sizing emulsion104
Emulsion 121
Emulsion 235

Example 3

Get two sizing emulsion (emulsion 1 and 2), both containing 0.15 g AKD, 0.0075 g of the acetate of alcohol Ziegler (C12-14EO(8)), 0.0075 g of acetate Christianizing phenol PO(10)EO(25)PO(3) and 0.0075 g of dodecylbenzenesulfonate calcium (Ca-DBS, 65% active ingredient). To emulsion 2 (in accordance with the invention) also add, separately from the above-mentioned components, 0,0167 g dolezelova alcohol and 29,81 g of water, while to the emulsion, add 1 t is like 29,83 g of water, separately from the above-mentioned components. Two emulsion receive, as described in example 1. Assess the distribution of particle sizes (table 6), and the effectiveness of sizing (table 7) emulsions 1 and 2. The particle size measured according to the method of example 1. To measure the size effect using the method Cobb 60 using paper pulp as in example 2 and identical retention system with the same added amount.

Table 6

Particle size
EmulsionD(v, 0,5) mmD(v, 0,9) mm
119,1038,22
28,5420,61

Table 7

Sizing properties
EmulsionThe added amount of AKD, kg adhesive per ton of dry fiberCobb 60
without adding the emulsion-117
1245
1326
2226
2320

1. There is actually, anhydrous sizing composition containing less than 5 wt.% water system, including adhesive, non-ionic surfactant, anionic surfactant and a monohydroxy alcohol.

2. The aqueous sizing composition, in which the dispersion comprises an adhesive substance, a nonionic surfactant, anionic surfactant and a monohydroxy alcohol.

3. A sizing composition according to any one of the preceding paragraphs, where the monohydroxy alcohol is a fatty alcohol.

4. A sizing composition according to claim 3, where monohydroxy alcohol includes at least 4 carbon atoms.

5. A sizing composition according to claim 3, where monohydroxy alcohol comprises an alkyl group having from 4 to 20 carbon atoms.

6. A sizing composition according to any one of the preceding paragraphs, where the nonionic surfactant is polyoxyalkylene connection.

7. A sizing composition according to claim 6, where polyoxyalkylene connection includes a hydrophobic fragment having at least 8 carbon atoms.

8. A sizing composition according to any one of the preceding paragraphs, where the mass-average molecular weight non-ionic surfactant is up to 4000.

9. A sizing composition according to any one of the preceding paragraphs, where the mass-average molecular is th weight of anionic surfactant is up to 2000.

10. A sizing composition according to any one of the preceding paragraphs, where the ratio of nonionic surfactant and anionic surfactant is from 10:1 to 1:10.

11. A sizing composition according to any one of the preceding paragraphs, where the adhesive is a reacts with cellulose adhesive.

12. A sizing composition according to claim 11, where clausee substance is a dimer of ketene or the anhydride of the acid.

13. A sizing composition according to claim 11, where the adhesive is a dimer of ketene.

14. The method of obtaining water composition, including homogenization of adhesive in the presence of nonionic surfactants, anionic surfactants and monohydroxy alcohol.

15. The use of aqueous sizing composition as defined in claim 2, as the sizing in the mass or surface sizing in the production of paper or cardboard.



 

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Sizing composition // 2258727

FIELD: stabilized dispersions.

SUBSTANCE: invention relates to emulsification and colloidal stabilization of emulsions and dispersions of hydrophobic phases in aqueous phases using a coacervate. In particular, stable emulsified or dispersed composition of invention, including hydrophobic and aqueous phases, is stabilized by cationic colloidal coacervate stabilizer including anionic and cationic components in a proportion ensuring zeta potential of the composition to be at least 20 mV. Preferred hydrophobic phase is non-colophony reactive or non-reactive sizing substance, although employment of coacervate allows stable emulsions or dispersions of mixtures of colophony and non-colophony sizing substances to be obtained. Furthermore, methods of obtaining and using stable emulsions or dispersions as well as sized paper made using emulsified or dispersed coacervate-stabilized sizing substance are described.

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139 cl, 1 dwg, 3 tbl, 16 ex

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41 cl, 6 tbl, 6 ex

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FIELD: stabilized dispersions.

SUBSTANCE: invention relates to emulsification and colloidal stabilization of emulsions and dispersions of hydrophobic phases in aqueous phases using a coacervate. In particular, stable emulsified or dispersed composition of invention, including hydrophobic and aqueous phases, is stabilized by cationic colloidal coacervate stabilizer including anionic and cationic components in a proportion ensuring zeta potential of the composition to be at least 20 mV. Preferred hydrophobic phase is non-colophony reactive or non-reactive sizing substance, although employment of coacervate allows stable emulsions or dispersions of mixtures of colophony and non-colophony sizing substances to be obtained. Furthermore, methods of obtaining and using stable emulsions or dispersions as well as sized paper made using emulsified or dispersed coacervate-stabilized sizing substance are described.

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139 cl, 1 dwg, 3 tbl, 16 ex

The invention relates to polymers useful in the adhesive compositions, in particular to polymer dispersions and glue, made with its application

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3 ex, 1 tbl

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