NO154313B - PROCEDURE FOR DISPERSING TALK. - Google Patents
PROCEDURE FOR DISPERSING TALK. Download PDFInfo
- Publication number
- NO154313B NO154313B NO791425A NO791425A NO154313B NO 154313 B NO154313 B NO 154313B NO 791425 A NO791425 A NO 791425A NO 791425 A NO791425 A NO 791425A NO 154313 B NO154313 B NO 154313B
- Authority
- NO
- Norway
- Prior art keywords
- talc
- dispersion
- wetting agent
- dispersant
- average molecular
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 18
- 239000000454 talc Substances 0.000 claims description 39
- 229910052623 talc Inorganic materials 0.000 claims description 39
- 239000006185 dispersion Substances 0.000 claims description 32
- 239000002270 dispersing agent Substances 0.000 claims description 17
- 239000000080 wetting agent Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- -1 alkyl ether sulfate Chemical class 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 125000000217 alkyl group Chemical group 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- 150000002191 fatty alcohols Chemical class 0.000 claims description 5
- 125000000129 anionic group Chemical group 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- 229960000878 docusate sodium Drugs 0.000 claims description 3
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical compound [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 claims description 3
- 229920002125 Sokalan® Polymers 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 150000004665 fatty acids Chemical class 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 2
- 239000004584 polyacrylic acid Substances 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 150000008051 alkyl sulfates Chemical class 0.000 claims 1
- LRMHFDNWKCSEQU-UHFFFAOYSA-N ethoxyethane;phenol Chemical compound CCOCC.OC1=CC=CC=C1 LRMHFDNWKCSEQU-UHFFFAOYSA-N 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000000243 solution Substances 0.000 description 7
- 229920000867 polyelectrolyte Polymers 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 235000019830 sodium polyphosphate Nutrition 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- FXNDIJDIPNCZQJ-UHFFFAOYSA-N 2,4,4-trimethylpent-1-ene Chemical group CC(=C)CC(C)(C)C FXNDIJDIPNCZQJ-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001253 acrylic acids Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001449 anionic compounds Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000003906 humectant Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000008040 ionic compounds Chemical class 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 235000019828 potassium polyphosphate Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
- C09K23/017—Mixtures of compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Paints Or Removers (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Description
Foreliggende oppfinnelse angår fremgangsmåte for disperge- The present invention relates to a method for dispersing
ring av talk, f.eks. av den type som brukes som påstryknings-materiale i papirindustrien. Ved fremstillingen av slike dispersjoner er det ønskelig at man innen relativt kort tid, call off talk, e.g. of the type used as coating material in the paper industry. When producing such dispersions, it is desirable that within a relatively short time,
dvs. fra 1 til 2 timer, kan dispergere så mye talk som mulig i en stabil, pumpbar dispersjon. Jo mindre partikkelstørrelse talken har, jo vanskeligere er dette å oppnå. ie from 1 to 2 hours, can disperse as much talc as possible into a stable, pumpable dispersion. The smaller the particle size of the talc, the more difficult this is to achieve.
Et kjent dispergeringsmiddelsystem som er i stand til å danne A known dispersant system capable of forming
en dispersjon bestående av 68,5% talk basert på dispersjonens totale vekt, og hvor størsteparten av partiklene er større enn 5,5^um (egnet for papirpåstrykning), har følgende sammen- a dispersion consisting of 68.5% talc based on the dispersion's total weight, and where the majority of particles are larger than 5.5 µm (suitable for paper coating), has the following
setning : sentence :
For påstrykning av papir er det imidlertid nødvendig med en For ironing on paper, however, one is required
talk hvor mesteparten av partiklene er mindre enn 2,5^um. talc where most of the particles are smaller than 2.5 µm.
Kjente dispergeringsmidler tillater ikke at dispersjonen Known dispersants do not allow the dispersion
inneholder mer enn 60 vekt-% av slike partikler. contains more than 60% by weight of such particles.
Gjennom foreliggende oppfinnelse er det nå mulig å oppnå Through the present invention it is now possible to achieve
en tilfredsstillende dispersjon av talk av påstryknings- a satisfactory dispersion of talc from the application
kvalitet. Ifølge foreliggende oppfinnelse er det således tilveiebragt en fremgangsmåte for dispergering av talk hvor størstedelen av partiklene er mindre enn 2,5 millimikron, quality. According to the present invention, there is thus provided a method for dispersing talc where the majority of the particles are smaller than 2.5 millimicrons,
for bruk ved belegging av papir, innbefattende dispergering av talken i en vandig oppløsning inneholdende en effektiv mengde av et polyakrylsyre-dispergeringsmiddel som har en vektmidlere molekylvekt på mindre enn 100.000 ved en pH-verdi fra 7 til 11, og denne fremgangsmåten er kjennetegnet ved at man i dispersjonen anvender et ikke-ionisk eller anionisk fuktemiddel. for use in coating paper, comprising dispersing the talc in an aqueous solution containing an effective amount of a polyacrylic acid dispersant having a weight average molecular weight of less than 100,000 at a pH of from 7 to 11, said method being characterized in that a non-ionic or anionic wetting agent is used in the dispersion.
Dispergeringsmidler kan f.eks. være et alkalimetallsalt av en polykarboksylsyre, f.eks. en kopolymer av maleinsyre-anhydrid og diisobutylen, eller fortrinnsvis en homo- eller kopolymer av akrylsyrer. Andre dispergeringsmidler innbefatter karboksymetylcellulose og naftalensulfonat/- formaldehydkondensater. Dispersants can e.g. be an alkali metal salt of a polycarboxylic acid, e.g. a copolymer of maleic anhydride and diisobutylene, or preferably a homo- or copolymer of acrylic acids. Other dispersants include carboxymethyl cellulose and naphthalene sulfonate/formaldehyde condensates.
Dispergeringsmiddelet har fortrinnsvis en gjennomsnittlig molekylvekt på mindre enn 100.000 og en antallsmidlere molekylvekt på mer enn 1.000, f.eks. 1.000-10.000. The dispersant preferably has an average molecular weight of less than 100,000 and a number average molecular weight of more than 1,000, e.g. 1,000-10,000.
Fuktemiddelet kan være ethvert kjent anionisk eller ikke-ionisk overflateaktivt middel, f.eks. ikke-ioniske forbindelser som oksyetylerte og/eller oksypropylerte fett-alkoholer, fettsyrer, alkylfenoler eller fettaminer, eller anioniske forbindelser som alkyletersulfater, olefin-sulfonater, alkylbenzensulfonater, alkylfenoletersulfat-alkylsulfater eller aminetersulfater. Spersielt foretrukne er dialkylsulfosuksinater. The wetting agent can be any known anionic or nonionic surfactant, e.g. non-ionic compounds such as oxyethylated and/or oxypropylated fatty alcohols, fatty acids, alkylphenols or fatty amines, or anionic compounds such as alkyl ether sulphates, olefin sulphonates, alkylbenzene sulphonates, alkylphenol ether sulphate-alkyl sulphates or amine ether sulphates. Particularly preferred are dialkyl sulfosuccinates.
Fuktemiddelet har fortrinnvis én eller to alkylgrupper med 6-14 karbonatomer, f.eks. 8-10 karbonatomer. Et typisk eksempel er dioktylsulfosuksinat, og man kan enten bruke rette eller grenede alkylgrupper. The humectant preferably has one or two alkyl groups with 6-14 carbon atoms, e.g. 8-10 carbon atoms. A typical example is dioctyl sulfosuccinate, and one can either use straight or branched alkyl groups.
Det kan videre eventuelt anvendes uorganiske dispersjons-midler slik som natrium- eller kaliumpolyfosfater, -silikater eller -heksametafosfater. Inorganic dispersants such as sodium or potassium polyphosphates, silicates or hexametaphosphates may also be used.
Det er ønskelig å unngå eller å redusere skumdannelsen, og dette kan ifølge foretrukne utførelser av foreliggende oppfinnelse oppnås på én av de tre følgende måter: 1. Ved valg av et fuktemiddel (f.eks. et dialkylsulfo-suksinat) som har relativt lavt skummende karakter. 2. Ved tilsetning av et antiskummemiddel såsom en fettalkohol eller et silikon-antiskummiddel. It is desirable to avoid or reduce the formation of foam, and this can be achieved according to preferred embodiments of the present invention in one of the following three ways: 1. By choosing a wetting agent (e.g. a dialkyl sulfosuccinate) which has relatively low foaming character. 2. By adding an antifoam agent such as a fatty alcohol or a silicone antifoam agent.
3. Ved å bruke en blandeteknikk som ikke innbefatter 3. By using a mixing technique that does not include
en vesentlig væske-/gass-grenseflate. a substantial liquid/gas interface.
En utførelse av foreliggende oppfinnelse gir en stabil, pumpbar dispersjon i vann bestående av minst 60 vekt-% talk (i forhold til dispersjonens totalvekt) hvor størstedelen av partiklene er mindre enn 2,5^um, ved at dispersjonen inneholder 0,1-2 vekt-%, basert på vekten av nevnte talk, An embodiment of the present invention provides a stable, pumpable dispersion in water consisting of at least 60% by weight talc (in relation to the total weight of the dispersion) where the majority of the particles are smaller than 2.5 µm, in that the dispersion contains 0.1-2 % by weight, based on the weight of said talc,
av et organisk polyelektrolytt-dispergeringsmiddel med en antallsmidlere molekylvekt på mer enn 1.000 og en vektmidlere molekylvekt på mindre enn 100.000 og 0,1-2,5 vekt-%, basert på vekten av nevnte talk, av et ikke-ionisk eller anionisk fuktemiddel, og hvor nevnte dispersjon har en pH mellom 7 og 11. of an organic polyelectrolyte dispersant having a number average molecular weight of more than 1,000 and a weight average molecular weight of less than 100,000 and 0.1-2.5% by weight, based on the weight of said talc, of a nonionic or anionic wetting agent, and where said dispersion has a pH between 7 and 11.
Dispersjonen inneholder fortrinnsvis minst 65 vekt-% talk, dvs. 65-75%. Den foretrukne konsentrasjonen av dispergeringsmiddelet er fra 0,3-1%, basert på talkens vekt. The dispersion preferably contains at least 65% by weight of talc, i.e. 65-75%. The preferred concentration of the dispersant is from 0.3-1%, based on the weight of the talc.
Den foretrukne konsentrasjon av fuktemiddelet er 0,5-2%, basert på vekten av talken. Den foretrukne pH ligger i området 8-10,5. The preferred concentration of the wetting agent is 0.5-2%, based on the weight of the talc. The preferred pH lies in the range 8-10.5.
Dispergeringsmiddelsystemet i foreliggende oppfinnelse kan fremstilles som et vandig konsentrat inneholdende 20-80% dispergeringsmiddel og fuktemiddel. Kjøperen av dette konsentrat kan så tilsette en base for å justere den endelige pH og så vann til den ønskede fortynning før han tilsetter og The dispersant system in the present invention can be prepared as an aqueous concentrate containing 20-80% dispersant and wetting agent. The purchaser of this concentrate can then add a base to adjust the final pH and then water to the desired dilution before adding and
iblander nevnte talk. includes said talk.
Oppfinnelsen er illustrert ved hjelp av følgende eksempler: The invention is illustrated by means of the following examples:
Eksempel 1 Example 1
Det talk som skulle dispergeres, og som er kjent under The talc which was to be dispersed, and which is known under
navnet "Lohjatalc PV10" hadde følgende sammensetning: the name "Lohjatalc PV10" had the following composition:
9 9,9% mindre enn 20^,um 9 9.9% less than 20 µm
99 % mindre enn lO^um 99% less than lO^um
85 % mindre enn 5^um 85% less than 5 µm
6 0 % mindre enn 2^um 6 0% less than 2^um
35 % mindre enn l^um 35% less than l^um
Dispersjonen hadde følgende sammensetning: The dispersion had the following composition:
"Lohjatalc PV10": 65% (tørrvekt) "Lohjatalc PV10": 65% (dry weight)
"Empicryl APD" (natriumsalt av diisobutylen-maleinsyreanhydridkopolymer, 25% faste stoffer): "Empicryl APD" (sodium salt of diisobutylene-maleic anhydride copolymer, 25% solids):
0,49% (0,75% baset på talken) 0.49% (0.75% based on talc)
"Empilan KA10/80", en blanding av C,n ,_ fettalkohol, 10 mol etoksylat, 80%, vann 26%; 0,81% (1,25% av talken). "Empilan KA10/80", a mixture of C,n ,_ fatty alcohol, 10 moles of ethoxylate, 80%, water 26%; 0.81% (1.25% of talc).
Molar natriumhydroksydoppløsning: 0,73% (1,13% av Molar sodium hydroxide solution: 0.73% (1.13% of
talken). the talk).
Vann: Resten til 100% Water: The rest to 100%
Dispersjonen kan fremstilles ved å oppløse alle de vann-oppløselige komponentene av dispersjonen i det vann som er nødvendig, og så lette talken til oppløsningen ved hjelp av en hurtigblander i løpet av 45-50 min. The dispersion can be prepared by dissolving all the water-soluble components of the dispersion in the water required, and then lightening the talc into the solution with the aid of a rapid mixer within 45-50 min.
Dispersjonens viskositet ble målt ved hjelp av et Brookfield-viskometer ved romtemperatur umiddelbart etter fremstillingen, og etter 3 døgns lagring. Suspensjonen hadde en tendens til å fortykke seg og sedimentere seg ved henstand, men kunne lett opparbeides igjen ved svak omrøring. The viscosity of the dispersion was measured using a Brookfield viscometer at room temperature immediately after preparation, and after 3 days of storage. The suspension tended to thicken and settle on standing, but could easily be worked up again with gentle stirring.
Resultater Results
Eksempel 2 Example 2
En dispersjon ble fremstilt som beskrevet i eksempel 1. Dispersjonen hadde følgende sammensetning: A dispersion was prepared as described in example 1. The dispersion had the following composition:
"Lohjatalc PV10": 65% (tørrvekt) "Lohjatalc PV10": 65% (dry weight)
Dispex N40" (natriumpolyakrylat, 40% faste stoffer): Dispex N40" (sodium polyacrylate, 40% solids):
0,325% (0,5% av talken) 0.325% (0.5% of talc)
"Epimin OT" (60% aktiv dioktylsulfosuksinat): 0,975% "Epimin OT" (60% active dioctyl sulfosuccinate): 0.975%
(1,5% av talken) (1.5% of talc)
1 molar natriumhydroksydoppløsning: 0,73% (1,13% av talken) 1 molar sodium hydroxide solution: 0.73% (1.13% of talc)
Vann: Resten til 100% Water: The rest to 100%
Viskositeten ble målt som beskrevet i eksempel 1 med følgende resultat: The viscosity was measured as described in example 1 with the following result:
Resultater: Results:
Eksempel 3 Example 3
En dispersjon ble fremstilt som beskrevet i eksempel 1. Dispersjonen hadde følgende sammensetning: A dispersion was prepared as described in example 1. The dispersion had the following composition:
"Lohjatalc PV10": 65% (tørrvekt) "Lohjatalc PV10": 65% (dry weight)
"Dispex N40": 0,2 (0,3% av talken) "Dispex N40": 0.2 (0.3% of talc)
"Epimin KSN70" (natrium C,~ ,R-alkyl-3-mol-eter-sulfat): 1,17% (l,8%av talken) "Epimin KSN70" (sodium C,~,R-alkyl-3-mol ether sulfate): 1.17% (1.8% of talc)
1 molar natriumhydroksydoppløsning: 0,73% (1,13% av talken) 1 molar sodium hydroxide solution: 0.73% (1.13% of talc)
Vann: Resten til 100% Water: The rest to 100%
Viskositeten ble målt som i eksempel 1 med følgende resultater : The viscosity was measured as in example 1 with the following results:
Resultater Results
Eksempel 4 Example 4
En dispersjon ble fremstilt som beskrevet i eksempel 1, bortsett fra at man istedenfor "Lohjatalc PV10" brukte en talk som er kjent under navnet "Finntalc CIO", som hadde følgende sammensetning: A dispersion was prepared as described in example 1, except that instead of "Lohjatalc PV10" a talc known under the name "Finntalc CIO" was used, which had the following composition:
99% mindre enn 12^um 99% smaller than 12 µm
74% mindre enn 4^um 74% less than 4 µm
50% mindre enn 2,3^,um 50% smaller than 2.3 µm
25% mindre enn l,2^um 25% less than 1.2 µm
Natriumpolyfosfat ble brukt som deflokkuleringsmiddel. Sodium polyphosphate was used as a deflocculating agent.
Dispersjonen hadde følgende sammensetning: The dispersion had the following composition:
"Finntalc CIO": 65% (tørrvekt) "Finntalc CIO": 65% (dry weight)
"Empicryl APD": 0,49% (0,75% av talken) "Empicryl APD": 0.49% (0.75% of talc)
"Empilan KA10/80": 0,81% (1,25% av talken) Natriumpolyfosfat: 0,06 5% (0,1% av talken) "Empilan KA10/80": 0.81% (1.25% of talc) Sodium polyphosphate: 0.06 5% (0.1% of talc)
1 molat natriumhydroksydoppløsning: 0,75% (1,13% av talken) 1 mole of sodium hydroxide solution: 0.75% (1.13% of talc)
Vann: Resten til 100% Water: The rest to 100%
Resultater Results
Eksempel 5 Example 5
En dispersjon ble fremstilt som beskrevet i eksempel 4, bortsett fra at. "Empicryl APD" ble erstattet med en til-svarende vekt av "Dispex N40". A dispersion was prepared as described in Example 4, except that. "Empicryl APD" was replaced with an equivalent weight of "Dispex N40".
Resultater Results
Eksempel 6 Example 6
Det ble fremstilt en dispersjon som beskrevet i eksempel 1. Den talk som ble brukt, var "Finntalc CIO". Man brukte også natriumsilikat som selges under varemerket "Pyramid Grade No. 84" (Crosfields) som en eventuell ekstra ingredi-ens . A dispersion was prepared as described in example 1. The talc used was "Finntalc CIO". Sodium silicate sold under the trademark "Pyramid Grade No. 84" (Crosfields) was also used as an additional ingredient.
Dispersjonen hadde følgende sammensetning: The dispersion had the following composition:
"Finntalc CIO": 65% (tørrvekt) "Finntalc CIO": 65% (dry weight)
"Empicryl APD": 0,4 9 (0,75% av talken) "Empicryl APD": 0.4 9 (0.75% of talc)
"Empilan KA10/80": 0 (1% (1,25% av talken) "Empilan KA10/80": 0 (1% (1.25% of talc)
1 molar natriumhydroksydoppløsning: 0,73% (1,13% 1 molar sodium hydroxide solution: 0.73% (1.13%
av talken) of the talc)
Vann: Resten til 100% Water: The rest to 100%
Resultater Results
Eksempel 7 Example 7
De følgende sammenlignende eksperimenter ble utført med dispersjonssystemet som er angitt på side 1. Dette er for en talkdispersjon med 65% faste stoffer. The following comparative experiments were carried out with the dispersion system indicated on page 1. This is for a talc dispersion with 65% solids.
Polyelektrolytt-dispergeringsmiddel: 0,65% (1% av talk) Karboksymetylcellulose: 0,65% (1% av talk) Polyelectrolyte dispersant: 0.65% (1% of talc) Carboxymethyl cellulose: 0.65% (1% of talc)
1 molar natriumhydroksydoppløsning: 0,73% (1,13% av talk) 1 molar sodium hydroxide solution: 0.73% (1.13% of talc)
Dette dispersjonssystemet ble brukt for å forsøke å fremstille 65% talkdispersjoner av både "Finntalc CIO" og Lohjatalc PV10" ved å bruke "Empicryl APD" som polyelektrolytt-dispergeringsmiddel. This dispersion system was used to attempt to prepare 65% talc dispersions of both "Finntalc CIO" and Lohjatalc PV10" using "Empicryl APD" as the polyelectrolyte dispersant.
I begge eksperimenter var det umulig å dispergere all. talk. In both experiments it was impossible to disperse everything. talk.
E ksempel 8 Example 8
Eksperimentet fra eksempel 7 ble gjentatt ved å bruke "Lohjatalc PV10" med "Dispex N40" som polyelektrolytt-dispersjonsmiddel. Det var ikke mulig å dispergere all talk. The experiment of Example 7 was repeated using "Lohjatalc PV10" with "Dispex N40" as the polyelectrolyte dispersant. It was not possible to disperse all the talk.
Claims (13)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1693178 | 1978-04-28 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO791425L NO791425L (en) | 1979-10-30 |
| NO154313B true NO154313B (en) | 1986-05-20 |
| NO154313C NO154313C (en) | 1986-08-27 |
Family
ID=10086254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO791425A NO154313C (en) | 1978-04-28 | 1979-04-27 | PROCEDURE FOR DISPERSING TALK. |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA1117845A (en) |
| FI (1) | FI74215C (en) |
| GB (1) | GB2019822B (en) |
| NO (1) | NO154313C (en) |
| SE (1) | SE442171B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2948015A1 (en) * | 1979-11-29 | 1981-06-11 | Basf Ag, 6700 Ludwigshafen | METHOD FOR PRODUCING AQUEOUS PARAFFIN DISPERSIONS IN THE PRESENCE OF CATIONIC POLYELECTROLYTES AS DISPERSING AGENTS |
| EP0050936A1 (en) * | 1980-10-23 | 1982-05-05 | ENGLISH CLAYS LOVERING POCHIN & COMPANY LIMITED | Improvements in or relating to the preparation of aqueous suspensions of talc |
| US4505754A (en) * | 1983-09-19 | 1985-03-19 | Westvaco Corporation | Process for foam lowering and improvement of alum sensitivity of dispersed size |
| FR2581323B1 (en) * | 1985-05-06 | 1987-05-29 | Rhone Poulenc Spec Chim | NOVEL SURFACTANT COMPOSITION, PROCESS FOR OBTAINING SAME AND APPLICATIONS THEREOF |
| DE3712206A1 (en) * | 1987-04-10 | 1988-10-20 | Benckiser Knapsack Gmbh | ALKALINE DISPERGATOR |
| SE8800660L (en) * | 1988-02-26 | 1989-08-27 | Bilsom Ab | SEAT AND AGENTS FOR SURFACE TREATMENT OF FIBER CONTAINING, ESSENTIAL INORGANIC MATERIAL |
| DE3815239A1 (en) * | 1988-05-05 | 1989-11-16 | Bayer Ag | AQUEOUS DISPERSIONS WITH A SYNERGISTIC DISPERSING AGENT COMBINATION |
| US5266622A (en) * | 1988-05-05 | 1993-11-30 | Bayer Aktiengesellschaft | Aqueous dispersions containing a synergistic dispersant combination |
| GB9405275D0 (en) * | 1994-03-17 | 1994-04-27 | Ecc Int Ltd | Aqueous suspensions of inorganic materials |
| FI102401B (en) | 1997-05-28 | 1998-11-30 | Raisio Chem Oy | Method for providing a transparent and permeability-reducing coating on paper or paperboard and a coating agent used in the method |
| FI980086A (en) * | 1997-05-28 | 1998-11-29 | Enso Oyj | Coated paperboard, its method of manufacture and containers and packaging made from it |
| FI104502B (en) | 1997-09-16 | 2000-02-15 | Metsae Serla Oyj | A method of making a paper web |
| FI108950B (en) | 1998-03-13 | 2002-04-30 | M Real Oyj | A process for making coated wood-free paper |
| CA2329771A1 (en) * | 1998-05-01 | 1999-11-11 | George A. Smith | Adsorbed surfactants and uses therefor |
| FI111649B (en) | 1998-05-11 | 2003-08-29 | M Real Oyj | The use of calcium carbonate is made from calcium oxalate as pigment |
| FI117717B (en) * | 1999-07-09 | 2007-01-31 | Ciba Sc Holding Ag | Surface Adhesive Composition |
| US7495042B2 (en) * | 2003-10-28 | 2009-02-24 | Cabot Corporation | Non-aqueous coating compositions |
| FR2981939B1 (en) | 2011-10-26 | 2015-02-20 | Coatex Sas | METHOD FOR MANUFACTURING AQUEOUS TALC SUSPENSIONS FROM AN ACRYLIC POLYMER WITH GRAY TENSIO-ACTIVE FUNCTION, SUSPENSIONS OBTAINED AND USES THEREOF |
-
1979
- 1979-04-24 GB GB7914268A patent/GB2019822B/en not_active Expired
- 1979-04-27 FI FI791379A patent/FI74215C/en not_active IP Right Cessation
- 1979-04-27 CA CA000326507A patent/CA1117845A/en not_active Expired
- 1979-04-27 NO NO791425A patent/NO154313C/en unknown
- 1979-04-27 SE SE7903753A patent/SE442171B/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| NO154313C (en) | 1986-08-27 |
| NO791425L (en) | 1979-10-30 |
| FI791379A (en) | 1979-10-29 |
| FI74215C (en) | 1988-01-11 |
| GB2019822B (en) | 1982-07-28 |
| FI74215B (en) | 1987-09-30 |
| GB2019822A (en) | 1979-11-07 |
| SE7903753L (en) | 1979-10-29 |
| CA1117845A (en) | 1982-02-09 |
| SE442171B (en) | 1985-12-09 |
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