MXPA96005757A - Filling material doubly treated on its surface, method for its preparation and use in pa manufacturing - Google Patents

Filling material doubly treated on its surface, method for its preparation and use in pa manufacturing

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Publication number
MXPA96005757A
MXPA96005757A MXPA/A/1996/005757A MX9605757A MXPA96005757A MX PA96005757 A MXPA96005757 A MX PA96005757A MX 9605757 A MX9605757 A MX 9605757A MX PA96005757 A MXPA96005757 A MX PA96005757A
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MX
Mexico
Prior art keywords
acid
weight
filler
oil
further characterized
Prior art date
Application number
MXPA/A/1996/005757A
Other languages
Spanish (es)
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MX9605757A (en
Inventor
A Gill Robert
Original Assignee
Minerals Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minerals Technologies Inc filed Critical Minerals Technologies Inc
Priority claimed from PCT/US1995/006013 external-priority patent/WO1995032335A1/en
Publication of MXPA96005757A publication Critical patent/MXPA96005757A/en
Publication of MX9605757A publication Critical patent/MX9605757A/en

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Abstract

An inorganic filler composition and method for the use thereof in which the inorganic filler has been pretreated with an anionic treatment agent and a cationic polymer to produce a doubly treated inorganic filler, the inorganic filler materials treated on its surface of the present invention are particularly suitable for use in papermaking processes where sizing and other properties such as strength and optical performance are important.

Description

MATERIAL 1 WOODEN WOOD DOUBLE TROTTED ON ITS SURFACE. METHOD FOR PREPARATION AND USE IN THE MANUFACTURE OF PAPFI CQMPO OF THE INVENTION The present invention relates to a composition and a method for using said composition to improve the papermaking process and the quality of paper products produced therefrom. Very particularly, the present invention relates to the use of paper. of Sizing Agents, Even More Specifically, the present invention relates to inorganic fillers and surface-treated epals that are particularly suitable in papermaking processes where sizing and other properties such as strength and optical performance are important BACKGROUND OF THE INVENTION Sizing agents are typically used in the papermaking process to slow or resist the passage of liquids through paper. Sizing agents are generally used in the papermaking process either as internal sizing agents or surface treatment sizing agents. An internal sizing agent is added to the wet end of the papermaking process, while the surface sizing agents are added to the sizing press and effect surface sizing properties of the sheet. In the early development of cellulose reactive sizing agents, excessive amounts of the sizing agent are required to control sizing. The synthetic sizing materials currently in use are alkyl ketene diringer (AKD) and alkenyl succinic anhydride (ASA). Both impart to the paper by means of a reaction or * arnica (covalent bond) with the hydroxyl groups of cellulose fiber. However, excessive use of the cellulose reagent type sizing agents results in increased wet end deposits, chopping of the press, and problems of coefficient of friction with the paper surface. These problems have an adverse impact on paper production and the quality of the final paper product. Therefore, the excessive use of sizing materials < s5 »*. It is a problem for paper manufacturers from an economic or technical point of view. Equally important for sizing control in the papermaking process is the type of filler material that is used. Inorganic base fillers such as, for example, clay, titanium dioxide and calcium carbonate are known to have a detrimental defect on sizing. The filler and the fine particles present in the wet end papermaking process, absorb the sizing agent, thus rendering it ineffective to control the Studies of alkaline papers filled with various types of calcium carbonate reveal an inverse relationship between the specific surface area (ssa) of the filler and the sizing values of the product, sizing problems can occur which adversely affect the quality of the sheet, machine performance and production efficiency. What is required is a base and flow filler material that can be employed in the papermaking process without detrimentally affecting the papermaking process or the physical properties of the end sheet. Therefore, an object of the present invention is to provide a method for improving paper sizing. Another object of the present invention is to provide an inorganic base filler composition that is capable of being used in the process ** papermaking to improve sizing. A further object of the present invention is to provide an inorganic base filler composition which improves the quality of the product of pap > the end without adversely affecting the sizing.
These and other objects will become apparent as provided in the following detailed specification.
PREVIOUS RELATED TECHNIQUE German patent application 2,316,097 discloses a filler for use in papermaking which comprises a calcium carbonate coated with an ammonium synthetic polymer resin such that the coated filler has a charge of "0" (zero). Coated filler is suggested to minimize the loss of normal resistance seen due to the use of a filler in papermaking. l ** ~. Preferred ammonium resins are water-based polymers, such as for example styrene-butadiene copolymer. The patent of E.U.A. No. 4,610,801 follows the preparation of a mineral suspension that continues to be bearable by the addition of cationic materials to the mineral suspension in such a way that the treated suspension does not feed or exceed its viscosity of 500 c.p.s. and when diluted, exert a fluctuating action. The suspension treated ^ * «Believes that it is useful as a coagulant in waste or papermaking .. In the patent of E.U.A. No. 5,147,507 discloses a method for improving papermaking by reducing the sizing required, keeping the sizing content over time, improving the handling properties of a formed web by adding to the papermaking product and about 5 to about 50% by weight of a filler material that has been treated on its surface with an amount of from about 0.1 to about 10.0% by weight of a cationic polymer that has been made cationic by treating it with at least one polyalpha-amide and a polyarnide polymer that has been reacted with an epoxidized hydrin halogen compound to form tertiary and quaternary amine groups on the cationic polymer.
BRIEF DESCRIPTION OF THE INVENTION What has been discovered is an inorganic filler composition and a method for the use thereof wherein the inorganic filler has previously been treated with an anionic treatment agent and a cationic polymer to produce a doubly treated inorganic filler which is particularly useful in papermaking processes where sizing, strength and optical performance are important.
DETAILED DESCRIPTION OF THE INVENTION In one aspect of the invention, what has been found to be novel and not anticipated by the prior art is a dually treated inorganic filler, such as, for example, calcium carbonate, either ground limestone or synthetically produced as carbonate of Precipitated calcium, the doubly treated inorganic filler is particularly useful in papermaking processes where apr-s-sto, strength and optical performance are important. Another aspect of the invention provides a method for producing a dually treated inorganic filler by treating the inorganic filler surface first with an ammonium chemical agent and then with a cationic polymer. When the inorganic filler doubly treated on its surface of the present invention is subsequently used in a papermaking process, the sizing properties are improved to adversely affect the strength and optical performance.
CHEMICALS ANIQNICQS The ammonium chemical agents that were found to be effective for treating the inorganic filler first are selected from the group consisting of vitreous sodium phosphate, / • rhoxymethyl cellulose, silicates, polyacrylates, sodium pol alkyl acid or other organic and inorganic dispersing agents. Vitreous sodium phosphates include but are not limited to sodium tetraphosphate, pyrophosphate or tetrasodium, sodium hexametaphosphate and long chain arnidopolyphosphate. Of these, phosphate of teraodium tea is preferred. Polyacrylic sodium acids, including polyacrylates with a molecular weight less than about 4,000, are especially preferred. A suitable polyacrylate is manufactured by Rhone-Poulenc, Mariettta, Georgia, under the tradename Collids-211"Vitreous sodium phosphates are preferred and tetrasodium phosphate is especially preferred. The level of anionic chemical agent required to improve the optical and physical performance of the paper made in accordance with the present invention is from about 0.1 wt% to about 1.0 wt% based on the weight of the inorganic filler. The preferred level of anionic chemical agent is from about 0.1% by weight to about 0.5% € / -p © so.
PQLH1ERQS CATIQNICQS The second component necessary to produce the doubly treated inorganic filler of the present invention is a cationic polymer. The use of from about 0.1% to about 10.0%, preferably from about 0.25% to about 2% by weight the cationic polymer, based on the weight of the inorganic filler, improved the sizing performance without adversely affecting the optical and physical properties, particularly opacity, and tensile strength of the resulting paper in which the filler is used. The cationic polymers in which they were found to be effective in treating the surface of the inorganic filler are dirners of the general formula: R - CH = C - CH - R wherein R is a hydrocarbon group selected from the group consisting of alkyl with at least 8 carbon atoms, cycloalkyl with at least carbon, aryl, aralkyl and alkaryl atoms. The specific dimers are octyl, decyl, dodecyl, tetradecyl, hexadecyl, octadecyl, eicosyl, docosyl, tetracosyl, femyl, benzyl-beta-naphthyl and cyclohexyl. Other useful dies produced from recycled miners, acid naphtho, acid delta-9, 10 ~ dec? Lén? coconut oil, oleic acid, oleic acid, lmoleate, linoleic acid, acetic acid and the like, as well as dimers manufactured from mixtures of natural fatty acid, such as obtained from coconut oil, babassu oil, oil of palm tree seed, palm oil, olive oil, peanut oil, bait of fat and lard and the like, including mixtures of the above. The polymer becomes cationic by treating the dimer with a polyamino ida and / or polyane polymer which is reacted with an epoxidized halogenohylan compound, such as epichlorohydrin, thereby forming tertiary and quaternary amine groups on the surface of the dimer. It is preferred that the cationic charge on the dimer be derived primarily from quaternary amine groups. A suitable polymer of this type is manufactured by Hercules, Inc., Uil ington, Delaware, under the commercial name Hercon.
INORGANIC BASE FILLERS The inorganic fillers suitable for use in the present invention are selected from the group consisting of calcium carbonate, whether ground natural limestone or synthetically produced as precipitated calcium carbonate (PCC), titanium dioxide, talc and silica / silicate fillers. . The aforementioned fillers, if used untreated, have a detrimental effect on the size, fT ** 0 when first treated with an anionic treatment agent and then with a cationic polymeric material according to the present invention they become easily usable and in fact they improve the papermaking process and the resulting paper product. For all types of fillers, it has been found that the amount of cationic polymer required to be added to the suspension containing filler material is / - "Correctly correlated with the surface area of ... material filler. In order to produce the dually treated inorganic filler on its surface of the present invention, the inorganic filler is first treated with an anionic chemical people and then a cationic polymer to produce the doubly treated inorganic filler on its surface of the present invention. Anionic and cationic treatment agents are typically added to a suspension containing the inorganic filler by any means known in the art. The a fc * < The anionic chemical may be added in wet or dry form, although the cationic treatment agent is typically added as a solution. Effective means of filler surface treatment consist of adding the treatment agents while stirring the suspension, at room temperature of 25 ° C. When the inorganic filler doubly treated on its surface of the present invention is subsequently used in a papermaking process, (^ "" "" - sizing performance is improved. When the present invention is practiced using clay as the inorganic base filler, it has been found that the surface treatment of the clay with a level of about 1.0 to about 2.0 % by weight of a cationic polymeric material of the aforementioned type, is effect to produce a filler clay having a substantially reduced sizing demand.The sizing was tested by Hercules sizing test (HST) to measure the penetration of liquid to Through the sheets, the HST is the test method used to determine the degree of paper sizing in the present invention.The test was performed on a Hercules sizing meter model KA or KC and the test method employed is the TAPPI method. T-530 PM-89 (revised in 1989) The following examples are intended to further illustrate the novel and non-obvious aspects of the inorganic base filler treated on its surface and the all for the same of the present invention. However, it should not be considered nor intended to limit the scope of the present invention in any aspect except as defined in the appended claims.
EXAMPLE I A suspension of CaCOa at 17.5% solids and pH 8.0 was treated with the catimic or ammonic and felonic materials described above. The treatment levels were calculated on a dry weight basis of the calcium carbonate present (% dry weight based on the filler). For the double treatment, to the calcium carbonate suspension, while stirring, the ammonia treatment agent was first added. After stirring for 5 minutes the catiomco material was added and continuously stirred for another 5 minutes. The treated CaCOa fillers were then incorporated into the * 8- < > of paper for further evaluation of the following?: A sheet of turbulent pulse paper (72 g / m52) was prepared from a material of 75% kraft pulp of bleached hardwood and 25% of wood kraft pulp soft bleached at 400 CSF (Canadian normal degree of freedom) at pH 7.0 distilled water. The shear rate on the turbulent pulse formed was fixed at 1250 RPM using a pulp material having a consistency of 0.12%. Hercon-85, synthetic sizing agent (aluite dimer) was added to the pulp at levels of 0.25 to 0.75 percent. The 11- / riter was added to the feed material to give a scale of filler content of about 15 to about 25% on the finished sheets. A retention of high molecular weight anionic polyacrylamide (accurac-171) was added in an amount corresponding to 0.05 percent. Distilled water was used through the process of preparing the leaves. The sheets were pressed using a grip at a pressure of 1.75 kg per square centimeter and dried on a rotating drum at a temperature of 125 ° C. All the leaves were conditioned at 50% relative humidity and at 23 ° C. The sizing values obtained on the sheets filled with CaCOa of double anionic / cationic treatment were found to improve the sizing to exceed values obtained on sheets produced using a single cationic treatment.
CTBDBQ i Coesparation by BST of individual treatment Vs using two different anionic agents at varying levels 16% filler HST 24% filler HST OBJ] Type of treatment% filler% filler% "3 No treatment 16.9 48 25.8 (anionic) cationic 72 15.8 348 24.5 0 (zero) - 0.5% Hercon.-85 182 15.6 421 23.7 0.1% colloids -211 + 0.5% Herson-85 15.2 424 23.8 303 0.3% colloids -211 + 0.5% Eercon-B5 15.0 397 23.3 294 0.3% colloids -211 + 0.5% Kßrcon-85? 15.6 357 23.4 120 0.1% TSPP + 0.5% Horcón- 85 0 15.2 389 24.2 17 Q.5% TSPP + 0.5% Hercon-B5 EXAMPLE II In the same manner as described in Example I, a suspension of CaCOa at about 17-18% solids and a pH of -8 was treated with the materials mentioned below (treatment levels calculated based on dry weight). allowing 5 minutes of mixing time for each addition. The paper sheets were then produced using the resulting surface treated CaC03 suspensions with 16% and 24% objective filler lenses and 0.6g objective dry leaf weights (74 g / m2). It was found that by increasing the anionic treatment while keeping the cationic treatment constant, higher sizing was obtained. v V CO &DRO II Comparison by HST of individual treatment Vs double using variable anionic adjustment levels and variable AKD levels. 16% HST filler 24% HST filler Type of treatment% of target filler% of target filler No treatment 3.2 3 (anionic) 15.1 38 2 (cationic) 0 (Zero) 0.5% Hercon-85 15.0 100 22.9 7 0 (Zero) 0.75% Hercon-85 14.9 159 22.2 21 0. 2% colloids -211 + 0.25% Hercon- B5 15.3 100 22.8 10 0. 2% colloids -211 * 0.5% Hercon-85 15.4 309 23.1 62? I 15.0 154 23.3 13 0.3% colloids -211 + 0.25% Hercon-85 EXAMPLE III In the same manner as described in Example I, a suspension of CaCOa a about 17-18% solids and pH of -8 was treated with the materials mentioned below (treatment levels calculated based on dry weight) allowing 5 minutes of mixing time for each addition. Then sheets of paper were produced using the treated CaCO: 3 suspensions on their resulting surface for a period of two days and again after 10 days of filler storage. The objective filler level was 16% and the weights from dry to dry were 0.6g (74 g / m2). The sizing values obtained on leaves filled with CaC03 of double amomco / catiomco treatment, it was found that they exceeded the values obtained on leaves produced using a single catiomco traffic after 2 days and 10 days of filler storage time. In addition, the double treatment showed less loss of sizing (% lower HST reduction) than the individual treatment.
Table III Comparison by HST of individual treatment Vs double after storage of filler suspension and prolonged (16% of target filler) Treated filler age (days)% reduction 2 10% filler HST filler HST Treatment type 41 No treatment 17.0 17 16.7 10 (anionic) cationic) 0 (Zero) 0.5% AKD 17.0 176 16.3 75 57 0. 3% colloids -211 + 0.5% AKD 16.5 307 16.0 223

Claims (15)

NOVED D OF THE INVENTION REIVIN ICATIONS
1. - A method for improving sizing comprising adding to a papermaking system a surface of filler material treated with from about 0.1% by weight to about 1.0% by weight of an anionic agent and from about 0.1% to about 10% by weight. %, based on the weight of the filler, of a cationic polymer.
2. A method according to claim 1, further characterized in that the anionic agent is selected from the group consisting of vitreous sodium phosphates, carboxymethylcellulose, silicates, polyacrylates and sodium polyacryl acid including mixtures of any of the foregoing.
3. A method according to claim 1, wherein said cationic polymer is a dimer of the general formula R-CH = C-CH-R wherein R is a hydrocarbyl group selected from the group consisting of alkyl with at least 8 carbon atoms, cycloalkyl with at least 6 carbon atoms, aryl, aralkyl and alkaryl
4. A method according to claim 3, further characterized in that the dimer is selected from octyl diamonds. , decyl, dodecyl, tetradecyl, hexadecyl, octadecyl, eicosyl, docosyl, tetracosyl, phenyl, benzyl-beta-naphthyl, cyclohexyl, naphthenic acid, delta-9,10-decylnic acid, palmitolinic acid, oleic acid, resinoléic acid, linoleate, linoleic acid, oleostearic acid and fatty acids obtained from coconut oil, babassu oil, palm kernel oil, palm oil, olive oil, peanut oil, rape seed oil, r ~ "~ * bait: or mantec a pig
5. A method according to claim 1, 2, 3 or 4, further characterized by the system from about 0.1% by weight to about 1.0% by weight of an anionic agent and from about 0.1% to about 10%, based on the weight of the filler material, of a polymer cationic
6. A method according to claim 1, 2, 3 or 4, further characterized in that the organic filler material is finely divided calcium carbonate.
7. A doubly treated mineral filler comprising a mineral filler surface first treated with an anionic treatment agent and subsequently a cationic polymer. 8.- The product in accordance with the claim 7, further characterized in that the filler material is a treated surface of from about 0.1% by weight to about 1.0% by weight of an anionic agent and from about 0.1% to about 10%, based on the weight of the filler material, of a cationic polymer. 9. The product according to claim 7 or 8, further characterized in that the mineral filler is calcium carbonate. 10. The product according to claim 7 or 8, further characterized in that the mineral filler is precipitated calcium carbonate. 11.- The product in accordance with the claim? - "8", further characterized in that the anionic agent is selected from the group consisting of sodium phosphates vitrios, carboxymethylcellulose, silicates, polyacrylates and sodium polyacryl acid 12. The product according to claim 7 or 8, further characterized because the cationic polymer is a dimer of the general formula R-CH = C-CH-R wherein R is a hydrocarbon group selected from the group consisting of alkyl with at least 8 carbon atoms, cycloalkyl with at least 6 atoms carbon, aryl, aralkyl, alkaryl 13. - The product according to claim 12, further characterized in that said dimer is selected from dimers of octyl, decyl, dodecyl, tetradecyl, hexadecyl, octadecyl, eicosyl, docosyl, tetracosyl, phenyl , benzyl-beta-naphthyl, cyclohexyl, naphthenic acid, delta-9,10-decjlenic acid, palmitolinic acid, oleic acid, resinoléic acid, linoleate, linoleic acid, olic acid Stearic and fatty acids obtained from coconut oil, babassu oil, palm kernel oil, palm oil, olive oil, peanut oil, rape seed oil, beef bait or lard. 14. An improved paper comprising cellulose fibers and a mineral filler first treated with an anionic bonding agent and subsequently a cationic polymer. 15. An improved paper comprising cellulose fibers and a calcium carbonate filler surface treated with from about 0.1% by weight to about 1.0% by weight of an anionic agent and from about 0.1% to about 10%, based on the weight of the filler material, of a cationic polymer.
MX9605757A 1995-05-16 1995-05-16 Dual surface treated filler material, method for its preparation and use in papermaking. MX9605757A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US246448 1994-05-20
PCT/US1995/006013 WO1995032335A1 (en) 1994-05-20 1995-05-16 Dual surface treated filler material, method for its preparation and use in papermaking

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MXPA96005757A true MXPA96005757A (en) 1998-02-01
MX9605757A MX9605757A (en) 1998-02-28

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