WO2005090677A1 - Use of betuline as a filler in paper and board - Google Patents

Use of betuline as a filler in paper and board Download PDF

Info

Publication number
WO2005090677A1
WO2005090677A1 PCT/FI2005/050093 FI2005050093W WO2005090677A1 WO 2005090677 A1 WO2005090677 A1 WO 2005090677A1 FI 2005050093 W FI2005050093 W FI 2005050093W WO 2005090677 A1 WO2005090677 A1 WO 2005090677A1
Authority
WO
WIPO (PCT)
Prior art keywords
betuline
paper
board
filler
weight
Prior art date
Application number
PCT/FI2005/050093
Other languages
Finnish (fi)
French (fr)
Inventor
Petri Silenius
Pirita Suortamo
Original Assignee
M-Real Oyj
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 M-Real Oyj filed Critical M-Real Oyj
Priority to US10/591,444 priority Critical patent/US20070131370A1/en
Priority to CA002560210A priority patent/CA2560210A1/en
Publication of WO2005090677A1 publication Critical patent/WO2005090677A1/en
Priority to SE0601907A priority patent/SE530918C2/en

Links

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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/02—Material of vegetable origin
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals

Definitions

  • the present invention relates to the use of betuline as a filler in paper and board, to a method for producing paper and board wherein betuline is used as a filler, and further, to paper and board comprising betuline as a filler.
  • Mainly inorganic fillers such as kaolins, talc, silica, silicates, titanium dioxide, and calcium carbonates are used as fillers in paper and board, and moreover, to some extent fillers comprising organic polymer pigments which may also be hol- low.
  • organic polymer pigments which may also be hol- low.
  • polymer pigments based on urea/formaldehyde resins may be mentioned.
  • the filler lowers the light scattering coefficient and tensile index of paper as little as possible.
  • expensive titanium dioxide has an excellent light scattering coefficient.
  • Betuline is found in birch bark, the content thereof in outer birch rind being about 20 - 40 %. Betuline may be isolated from birch, such as from the outer rind of the birch species Betula verrucosa common in Scandinavia by extracting with organic solvents using methods known as such.
  • Betuline has a pentacyclic triterpene alcohol structure and it is also known by the trivial name betulinol and by the systematc name lup-20(29)ene-3,28-diole.
  • the structure of betuline is shown by the following formula I:
  • Betuline is a white crystalline powder with a low density having a strongly hydro- phobic nature, and it is hardly soluble in water.
  • betuline in paper industry has been studied to some extent, particularly its effect on the yellowing of paper, brightness reversion of pulp, and its odour.
  • a coating paste was made of betuline by slurrying it together with excipients in water in a similar manner as with talc and by stabilizing the slurry with a stabilizer. Coating pastes were prepared from the slurry thus obtained using excipients known in the art, either with or without other coating pigments such as kaolin, calcium carbonate or talc.
  • coated base papers having an improved light scattering could be made because of the fact that in the structure of betuline, there are, among others, hydroxyl groups necessary for the carriers of optical brighteners.
  • the invention is directed to the use of betuline as a filler in paper and board.
  • the invention also relates to a method for producing paper and board, comprising the use of betuline as a filler.
  • the invention relates to papers and boards containing betuline as a filler.
  • betuline as a filler in paper and board.
  • betuline slurried in water is added to the pulp, preferably after the addition of retention aids, that is, as an aqueous slurry preferably containing betuline no more than 60 % by weight, par- ticularly preferably from 5 to 35 % by weight.
  • retention aids that is, as an aqueous slurry preferably containing betuline no more than 60 % by weight, par- ticularly preferably from 5 to 35 % by weight.
  • betuline may be used as a filler in paper and board, particularly as a filler in uncoated paper and board, preferably alone, but also together with known inorganic and/or organic fillers.
  • An aqueous slurry is prepared from betuline and then, this slurry is added to the pulp after the addition of reten- tion aids during the production of paper or board.
  • no more than 60 % by weight, particularly preferably from 5 to 35 % by weight of betuline is dispersed in water with one or more excipients.
  • One or more conventional agents used for dispersion of hydrophobic compounds may be used as excipients.
  • Said adjuvants are preferably selected from a group consisting of dispersing agents, surface active agents and stabilizers that stabilize the dispersion and prevent the formation of agglomerates.
  • Dispersing agent may be used in an amount ranging from 0 to 1 % by weight, preferably from 0.01 to 0.4 % by weight, the amount of the surface active agent being 0 to 6 % by weight, preferably from 2.5 to 5 % by weight, and that of the stabilizer being from 0 to 1 % by weight, preferably from 0.1 to 0.3 % by weight.
  • Useful dispersing agents include dispersing agents suitable for hydrophilic fillers such as salts of the acrylic acid polymers, examples of suitable surface active agents include polyethylene glycols, and suitable stabilizers include polyvinyl alcohols. Percentages by weight are calculated relative to the slurry.
  • the pH of the slurry is adjusted with a base to a value of at least 8.5, preferably between 8.5 and 10.
  • suitable bases include inorganic bases such as NaOH, KOH and the like.
  • Betuline is preferably used as a fine powder having a mean particle size of no more than 30 ⁇ m, the particle size being preferably between 0.3 and 10 ⁇ m, particularly preferably between 0.5 and 2.5 ⁇ m.
  • a SEM image of milled betuline particles is presented in the appended figure 1.
  • Betuline may be betuline prepared from birch, that is betuline isolated for instance by extraction from birch bark, from bark waste produced by pulp plants or industrial sawmills, or it may be synthetically produced betuline. Betuline having a purity of at least 85 % by weight, preferably at least 95 % by weight, is preferably used.
  • the method of the invention for producing paper or board comprises steps wherein an aqueous slurry is prepared containing preferably no more than 60 % by weight, particularly from 5 to 35 % by weight of fine betuline that is adjusted to a desirable particle size for instance by milling, if necessary, and then said slurry is added to the pulp used for paper or board production, particularly to fine paper pulp, preferably after the addition of retention aids. Then water is removed from the paper web followed by drying and calendering the paper or board if necessary, that is, the production of paper or board is continued in a conventional manner known as such to those skilled in the art.
  • Pulp used in the production of paper or board comprises chemical pulp or mechanical pulp or a mixture thereof, preferably pulp for fine papers including softwood and hardwood pulps. Different pulps may be freely mixed depending on the product to be produced.
  • the paper or board of the invention comprises betuline as the filler, the amount of betuline in the paper or board ranging between 0.1 and 60 %, preferably between 5 and 35 % by weight.
  • Betuline may be used as a filler in fine papers, in papers containing chemical and mechanical pulps, in uncoated and coated fine papers, in coated papers containing mechanical pulp, and moreover in the surface layers of boards, for instance in folding boxboard and linerboard.
  • betuline is used in fine papers con- taining at present high amounts of inorganic fillers in conventional manner.
  • the present invention has considerable advantages compared to prior art. Retention of betuline is clearly higher than that of traditional inorganic fillers. Due to this high retention of betuline, the quality of recycled water is improved and purer recycled water is obtained and thus, lower amounts of fixing agents and retention aids are necessary. Formation is improved due to the reduction of retention aids.
  • the examples show that in paper types containing betuline as a filler, the combination of tensile index and light scattering is clearly improved, and the tensile index may be increased in comparison to precipitated calcium carbonate by about 40 % without lowering the light scattering coefficient. This is illustrated by figure 2. Interlaminar strength of paper and board represented by Scott bond value is also somewhat increased.
  • betuline Compared to the known precipitated calcium carbonate (PCC) filler providing high bulk, betuline surprisingly renders high bulk but low porosity. Due to this low porosity, an impervious paper for coating having a superior surface is obtained, and accordingly during the coating step of the paper, clearly less coating paste is needed for high coating power. Moreover, betuline prevents the pulp from yellowing as shown by the results of Example 3.
  • PCC precipitated calcium carbonate
  • betuline The density of betuline being low, it is a light-weight substance, whereas traditional inorganic pigments are heavy causing clearly higher logistic costs than light-weight substances. With this light betuline, lighter printing and news quality papers may be produced, thus reducing mailing and other logistic costs and costs due to waste paper, and accordingly, less waste detrimental to the environment is produced. Unlike betuline, inorganic pigments do not belong to renewable resources. Betuline is an organic compound having a high heat value when burned, and further, it does not produce ash. In addition, betuline has antiviral, antifungal and antimicro- bial activities, and thus the amounts of antimicrobial agents used in the production of paper and board may be reduced, which clearly lowers the environmental burden caused by said agents.
  • Example 1 Dispersion of betuline to give a slurry
  • Betuline was milled to give a fine powder having a mean particle size of about 1 ⁇ m.
  • Figure 1 shows the SEM image of the milled betuline. Then, 0.15 parts by weight of a dispersing agent (Fennodispo A41), 3.5 parts by weight of a surface active agent (Lutesol T07), and 0.02 parts by weight of a 10 % NaOH solution were added to water and mixed, followed by the addition of 100 parts by weight of the milled betuline and 0.15 parts by weight of a stabilizer (Celvol 103) to the mixture thus obtained. Then, the mixture was slurried for 40 minutes using a Diaf dispersing apparatus.
  • SR 21 birch pulp 70 % by weight of SR 21 birch pulp and 30 % by weight of SR 27 softwood pulp were used.
  • Laboratory sheets having a surface weight of 60 g/m were prepared from chemical pulps containing respectively 10 and 20 % by weight of betuline, and for comparison purposes, 3 and 8 % by weight of PCC filler (Alcabar LO), the composi- tion of the pulp being 70 % by weight of birch and 30 % by weight of tall.
  • PCC filler Alcabar LO
  • Figures 3 and 4 show the results of the ISO brightness test and absorption coefficient test.
  • the sheets containing betuline turned yellow clearly slower than sheets containing PCC filler, and further, the sheets containing betuline were whitened more readily by light than other sheets. With respect to optical properties, the sheets containing betuline corresponded to sheets containing the PCC filler.

Landscapes

  • Paper (AREA)

Abstract

The invention relates to the use of betuline as a filler in paper or board, and to a method for producing paper or board. According to the invention, an aqueous slurry is made of betuline, followed by the addition of said slurry to the pulp during the production of paper or board, and removal of water from the paper web, and then the production of paper or board is continued in a conventional manner.

Description

Use of betuline as a filler in paper and board
Field of the invention
The present invention relates to the use of betuline as a filler in paper and board, to a method for producing paper and board wherein betuline is used as a filler, and further, to paper and board comprising betuline as a filler.
Prior art
Mainly inorganic fillers such as kaolins, talc, silica, silicates, titanium dioxide, and calcium carbonates are used as fillers in paper and board, and moreover, to some extent fillers comprising organic polymer pigments which may also be hol- low. As examples thereof, polymer pigments based on urea/formaldehyde resins may be mentioned.
It is desired that the filler lowers the light scattering coefficient and tensile index of paper as little as possible. Among the inorganic fillers most commonly used, expensive titanium dioxide has an excellent light scattering coefficient.
Within the European Union is under consideration that in the future, it will be prohibited to dump compostable material to landfills. Then, the only economically realistic alternative for the disposal of compostable waste material will be incin- eration thereof. Inorganic pigments won't, however, burn, but produce ash residues as waste, whereas organic compounds may be disposed of by incineration without waste residues. Moreover, within the EU, goals set concerning the proportion of bioenergy in total energy production should be reached by 2010, and thus, combustible organic pigments are also desirable in this respect. Great amounts of birch bark waste is produced annually by chemical forest and sawmill industries, this waste being mainly disposed of by incineration. Betuline is found in birch bark, the content thereof in outer birch rind being about 20 - 40 %. Betuline may be isolated from birch, such as from the outer rind of the birch species Betula verrucosa common in Scandinavia by extracting with organic solvents using methods known as such.
Betuline has a pentacyclic triterpene alcohol structure and it is also known by the trivial name betulinol and by the systematc name lup-20(29)ene-3,28-diole. The structure of betuline is shown by the following formula I:
Figure imgf000003_0001
Betuline is a white crystalline powder with a low density having a strongly hydro- phobic nature, and it is hardly soluble in water.
Use of betuline in paper industry has been studied to some extent, particularly its effect on the yellowing of paper, brightness reversion of pulp, and its odour. In FI 10402, use of betuline as a coating pigment of paper and board either alone or together with other pigments is discussed. A coating paste was made of betuline by slurrying it together with excipients in water in a similar manner as with talc and by stabilizing the slurry with a stabilizer. Coating pastes were prepared from the slurry thus obtained using excipients known in the art, either with or without other coating pigments such as kaolin, calcium carbonate or talc. With this coating paste containing betuline, coated base papers having an improved light scattering could be made because of the fact that in the structure of betuline, there are, among others, hydroxyl groups necessary for the carriers of optical brighteners.
On the basis of the above discussion, it may be seen that there is a need for papers and boards made from combustible raw materials, the properties thereof, however, corresponding to those of papers and boards prepared with conventional fillers, as well as for a method for producing said papers and boards.
Disclosure of the invention
The invention is directed to the use of betuline as a filler in paper and board.
The invention also relates to a method for producing paper and board, comprising the use of betuline as a filler.
Moreover, the invention relates to papers and boards containing betuline as a filler.
Characteristic features of the use of betuline in the production of paper and board, the method for producing paper and board, and papers and boards containing betuline as a filler according to the invention are presented in the claims.
Brief description of the invention
It was surprisingly found that problems and drawbacks of known solutions of prior art may be solved or at least essentially avoided by using betuline as a filler in paper and board. In the production of paper or board, betuline slurried in water is added to the pulp, preferably after the addition of retention aids, that is, as an aqueous slurry preferably containing betuline no more than 60 % by weight, par- ticularly preferably from 5 to 35 % by weight. Thus, paper and board that may be incinerated and having properties corresponding to those of papers and boards yet produced with conventional fillers may be obtained.
Detailed description of the invention
According to the invention, betuline may be used as a filler in paper and board, particularly as a filler in uncoated paper and board, preferably alone, but also together with known inorganic and/or organic fillers. An aqueous slurry is prepared from betuline and then, this slurry is added to the pulp after the addition of reten- tion aids during the production of paper or board. Preferably, no more than 60 % by weight, particularly preferably from 5 to 35 % by weight of betuline is dispersed in water with one or more excipients. One or more conventional agents used for dispersion of hydrophobic compounds may be used as excipients. Said adjuvants are preferably selected from a group consisting of dispersing agents, surface active agents and stabilizers that stabilize the dispersion and prevent the formation of agglomerates.
Dispersing agent may be used in an amount ranging from 0 to 1 % by weight, preferably from 0.01 to 0.4 % by weight, the amount of the surface active agent being 0 to 6 % by weight, preferably from 2.5 to 5 % by weight, and that of the stabilizer being from 0 to 1 % by weight, preferably from 0.1 to 0.3 % by weight. Useful dispersing agents include dispersing agents suitable for hydrophilic fillers such as salts of the acrylic acid polymers, examples of suitable surface active agents include polyethylene glycols, and suitable stabilizers include polyvinyl alcohols. Percentages by weight are calculated relative to the slurry.
If necessary, the pH of the slurry is adjusted with a base to a value of at least 8.5, preferably between 8.5 and 10. Examples of suitable bases include inorganic bases such as NaOH, KOH and the like. Betuline is preferably used as a fine powder having a mean particle size of no more than 30 μm, the particle size being preferably between 0.3 and 10 μm, particularly preferably between 0.5 and 2.5 μm. A SEM image of milled betuline particles is presented in the appended figure 1.
Betuline may be betuline prepared from birch, that is betuline isolated for instance by extraction from birch bark, from bark waste produced by pulp plants or industrial sawmills, or it may be synthetically produced betuline. Betuline having a purity of at least 85 % by weight, preferably at least 95 % by weight, is preferably used.
The method of the invention for producing paper or board comprises steps wherein an aqueous slurry is prepared containing preferably no more than 60 % by weight, particularly from 5 to 35 % by weight of fine betuline that is adjusted to a desirable particle size for instance by milling, if necessary, and then said slurry is added to the pulp used for paper or board production, particularly to fine paper pulp, preferably after the addition of retention aids. Then water is removed from the paper web followed by drying and calendering the paper or board if necessary, that is, the production of paper or board is continued in a conventional manner known as such to those skilled in the art.
Pulp used in the production of paper or board comprises chemical pulp or mechanical pulp or a mixture thereof, preferably pulp for fine papers including softwood and hardwood pulps. Different pulps may be freely mixed depending on the product to be produced.
The paper or board of the invention comprises betuline as the filler, the amount of betuline in the paper or board ranging between 0.1 and 60 %, preferably between 5 and 35 % by weight. Betuline may be used as a filler in fine papers, in papers containing chemical and mechanical pulps, in uncoated and coated fine papers, in coated papers containing mechanical pulp, and moreover in the surface layers of boards, for instance in folding boxboard and linerboard. Preferably betuline is used in fine papers con- taining at present high amounts of inorganic fillers in conventional manner.
The present invention has considerable advantages compared to prior art. Retention of betuline is clearly higher than that of traditional inorganic fillers. Due to this high retention of betuline, the quality of recycled water is improved and purer recycled water is obtained and thus, lower amounts of fixing agents and retention aids are necessary. Formation is improved due to the reduction of retention aids. In addition, the examples show that in paper types containing betuline as a filler, the combination of tensile index and light scattering is clearly improved, and the tensile index may be increased in comparison to precipitated calcium carbonate by about 40 % without lowering the light scattering coefficient. This is illustrated by figure 2. Interlaminar strength of paper and board represented by Scott bond value is also somewhat increased.
Compared to the known precipitated calcium carbonate (PCC) filler providing high bulk, betuline surprisingly renders high bulk but low porosity. Due to this low porosity, an impervious paper for coating having a superior surface is obtained, and accordingly during the coating step of the paper, clearly less coating paste is needed for high coating power. Moreover, betuline prevents the pulp from yellowing as shown by the results of Example 3.
The density of betuline being low, it is a light-weight substance, whereas traditional inorganic pigments are heavy causing clearly higher logistic costs than light-weight substances. With this light betuline, lighter printing and news quality papers may be produced, thus reducing mailing and other logistic costs and costs due to waste paper, and accordingly, less waste detrimental to the environment is produced. Unlike betuline, inorganic pigments do not belong to renewable resources. Betuline is an organic compound having a high heat value when burned, and further, it does not produce ash. In addition, betuline has antiviral, antifungal and antimicro- bial activities, and thus the amounts of antimicrobial agents used in the production of paper and board may be reduced, which clearly lowers the environmental burden caused by said agents.
The invention is now illustrated with the following examples without limiting the scope of the invention thereto.
Examples
Example 1 Dispersion of betuline to give a slurry
Betuline was milled to give a fine powder having a mean particle size of about 1 μm. Figure 1 shows the SEM image of the milled betuline. Then, 0.15 parts by weight of a dispersing agent (Fennodispo A41), 3.5 parts by weight of a surface active agent (Lutesol T07), and 0.02 parts by weight of a 10 % NaOH solution were added to water and mixed, followed by the addition of 100 parts by weight of the milled betuline and 0.15 parts by weight of a stabilizer (Celvol 103) to the mixture thus obtained. Then, the mixture was slurried for 40 minutes using a Diaf dispersing apparatus.
Example 2
Preparation and testing of sheets containing betuline
For producing the sheets, 70 % by weight of SR 21 birch pulp and 30 % by weight of SR 27 softwood pulp were used. 0.3 mg/g of the retention aid Percol 47, relative to the absolute dry weight of the pulp, and from 5 to 30 % by weight of the betuline dispersion prepared in Example 1 were added to the pulp mixture. From the pulp thus obtained, normal laboratory sheets having a surface weight of 60 g/m2 were made, compressed in conventional manner, dried and tested.
The sheets were extracted with acetone, followed by the determination of the amount of betuline by gas chromatography using an internal standard. Retention of betuline was rather high, the filler contents being 10 % and 20 %. Control sheet 1 contained no filler, precipitated calcium carbonate (PCC) in scalenohedron form was used in other control sheets. The retention of PCC was lower, and at best, filler contents were 8 % and 3 %. When comparing sheets containing 10 % of betuline and 8 % of PCC, it was found that betuline gave better strenght results, particularly the tensile index being clearly higher. Moreover, the porosity was better with betuline compared to control agents. The results are shown in Tables 1 and 2 below, and in the appended Figure 2, the tensile index is presented as the function of the light scattering coefficient.
Table 1
Figure imgf000009_0001
Table 2
Figure imgf000010_0001
Example 3 Preparation and testing of sheets containing betuline
Laboratory sheets having a surface weight of 60 g/m were prepared from chemical pulps containing respectively 10 and 20 % by weight of betuline, and for comparison purposes, 3 and 8 % by weight of PCC filler (Alcabar LO), the composi- tion of the pulp being 70 % by weight of birch and 30 % by weight of tall.
Figures 3 and 4 show the results of the ISO brightness test and absorption coefficient test. The sheets containing betuline turned yellow clearly slower than sheets containing PCC filler, and further, the sheets containing betuline were whitened more readily by light than other sheets. With respect to optical properties, the sheets containing betuline corresponded to sheets containing the PCC filler.

Claims

Claims
1. Use of betuline as a filler in paper or board.
2. Use according to Claim 1, characterized in that betuline is added to the pulp during the production of paper or board.
3. Use according to Claim 1 or 2, characterized in that betuline is used in combination with organic and/or inorganic fillers.
4. Method for producing paper or board, characterized in that an aqueous slurry is made of betuline, followed by the addition of said slurry to the pulp during the production of paper or board, and removal of water from the paper web, and then the production of paper or board is continued in a conventional manner.
5. Method for producing paper or board according to Claim 4, characterized in that betuline is slurried in water together with one or more excipients selected from the group consisting of dispersing agents, surface active agents, and stabilizers.
6. Method for producing paper or board according to Claim 4 or 5, characterized in that an aqueous slurry containing betuline is added to the pulp during the production of paper or board, after the addition of retention aids.
7. Method according to any of the Claims 4 - 6, characterized in that the aqueous slurry contains no more than 60 % by weight of betuline.
8. Method according to any of the Claims 4 - 7, characterized in that the aqueous slurry contains from 5 to 35 % by weight of fine betuline.
9. Method according to any of the Claims 4 - 8, characterized in that the aqueous slurry contains betuline having a mean particle size of no more than 30 μm.
10. Method according to any of the Claims 4 - 9, characterized in that the aque- ous slurry contains betuline having a mean particle size between 0.3 and 10 μm.
11. Method according to any of the Claims 4 - 10, characterized in that the aqueous slurry contains betuline having a mean particle size between 0.5 and 2.5 μm.
12. Paper or board, characterized in that it contains betuline as the filler.
13. Paper or board according to Claim 12, characterized in that it contains betuline in combination with inorganic and/or organic fillers as the filler.
PCT/FI2005/050093 2004-03-19 2005-03-18 Use of betuline as a filler in paper and board WO2005090677A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/591,444 US20070131370A1 (en) 2004-03-19 2005-03-18 Use of betuline as a filler in paper and board
CA002560210A CA2560210A1 (en) 2004-03-19 2005-03-18 Use of betuline as a filler in paper and board
SE0601907A SE530918C2 (en) 2004-03-19 2006-09-15 Use of betulin as filler in paper and paperboard, process for making paper or paperboard and paper or paperboard containing betulin as filler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20040428A FI20040428A (en) 2004-03-19 2004-03-19 Use of betulin as a filler for paper or cardboard
FI20040428 2004-03-19

Publications (1)

Publication Number Publication Date
WO2005090677A1 true WO2005090677A1 (en) 2005-09-29

Family

ID=32039447

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2005/050093 WO2005090677A1 (en) 2004-03-19 2005-03-18 Use of betuline as a filler in paper and board

Country Status (6)

Country Link
US (1) US20070131370A1 (en)
CA (1) CA2560210A1 (en)
FI (1) FI20040428A (en)
RU (1) RU2359077C2 (en)
SE (1) SE530918C2 (en)
WO (1) WO2005090677A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015025083A1 (en) * 2013-08-19 2015-02-26 Oy Separation Research Ab Hydrophobisation composition, method for hydrophobisation and substrate
EP2443283B1 (en) * 2009-06-18 2017-05-24 UPM Paper ENA Oy Paper product and process for making same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1079717A1 (en) * 1982-07-19 1984-03-15 Ленинградская лесотехническая академия им.С.М.Кирова Light fastness stabilizer for wood pulp and cellulose
FI102402B (en) * 1997-04-07 1998-11-30 Upm Kymmene Oyj Use of betulin as a coating pigment for paper and board

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6429240B1 (en) * 2000-02-29 2002-08-06 Michelman, Inc. Water-borne resin treatment for fibrous materials, process of treating, and product produced thereby having improved strength under both ambient and wet/humid conditions

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1079717A1 (en) * 1982-07-19 1984-03-15 Ленинградская лесотехническая академия им.С.М.Кирова Light fastness stabilizer for wood pulp and cellulose
FI102402B (en) * 1997-04-07 1998-11-30 Upm Kymmene Oyj Use of betulin as a coating pigment for paper and board

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DATABASE STN INTERNATIONAL ZAKAZOV A. ET AL: "Additives and lightfastness of wood pulp.", XP002988872 *
DATABASE WPI Derwent World Patents Index; AN 1984-275178, XP002988871 *
MATTSSON R. ET AL: "Influence of Abietic Acid, Betulinol, Sodium Oleate and Tripalmitine on the Migration of AKD in Paper.", JOURNAL OF PULP AND PAPER SCIENCE, vol. 29, no. 8, August 2003 (2003-08-01), pages 281 - 285, XP002988873, Retrieved from the Internet <URL:http://www.tappi-org/print.asp?rc=1&pid=27599&ch=1&ip=&det=1> *
ZAKAZOV A. ET AL: "Addirives and lightfastness of wood pulp.", BUMAZHNAYA PROMYSHLENNOST, vol. 11, 1984, pages 20 - 1, XP002988872 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2443283B1 (en) * 2009-06-18 2017-05-24 UPM Paper ENA Oy Paper product and process for making same
WO2015025083A1 (en) * 2013-08-19 2015-02-26 Oy Separation Research Ab Hydrophobisation composition, method for hydrophobisation and substrate
US9963600B2 (en) 2013-08-19 2018-05-08 Oy Separation Research Ab Hydrophobisation composition, method for hydrophobisation and substrate

Also Published As

Publication number Publication date
RU2006136924A (en) 2008-04-27
CA2560210A1 (en) 2005-09-29
SE0601907L (en) 2006-09-15
SE530918C2 (en) 2008-10-21
RU2359077C2 (en) 2009-06-20
FI20040428A0 (en) 2004-03-19
US20070131370A1 (en) 2007-06-14
FI20040428A (en) 2005-09-20

Similar Documents

Publication Publication Date Title
US20240240400A1 (en) Paper filler composition
CN111501400B (en) Paper and paperboard products
AU2016339066B2 (en) 3D-formable sheet material
AU2017205656B2 (en) In-line coated wood-based boards
CA2096738C (en) Paper and a method of paper manufacture
EP2505615B9 (en) Self-binding pigment hybrid
US5227024A (en) Low density material containing a vegetable filler
RU2606433C2 (en) Manufacture and use of composite structure containing precipitated carbonate
US9458570B2 (en) Filler composition and method of producing composite materials
EP2505614B1 (en) Process for preparing self-binding pigment particles
BRPI0706456A2 (en) cardboard packaging material and coating composition
NO173561B (en) PROCEDURE FOR MANUFACTURING PAPER AND COATED PAPER
CN114934406A (en) Preparation process of paper barrier material
US20070131370A1 (en) Use of betuline as a filler in paper and board
US7413601B2 (en) Kaolin products and their use
CN115748298B (en) Cultural paper and preparation method thereof
US6939609B1 (en) Filler and pigment
AU2016363349A1 (en) Calcium carbonate for particle boards
US20180179707A1 (en) Fibrous substrate for producing a porous coating base paper or prepreg, and method for the production thereof
WO2024133371A1 (en) Repulpable, paper-based backing layer
CA2402971A1 (en) Aqueous suspension providing a high degree of opacity paper
EP3026175A1 (en) Paper with high opacity

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DPEN Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2560210

Country of ref document: CA

Ref document number: 06019079

Country of ref document: SE

WWP Wipo information: published in national office

Ref document number: 06019079

Country of ref document: SE

NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

WWE Wipo information: entry into national phase

Ref document number: 2006136924

Country of ref document: RU

WWE Wipo information: entry into national phase

Ref document number: 2007131370

Country of ref document: US

Ref document number: 10591444

Country of ref document: US

122 Ep: pct application non-entry in european phase
WWP Wipo information: published in national office

Ref document number: 10591444

Country of ref document: US