US20140128521A1 - Anti-soiling agent composition - Google Patents
Anti-soiling agent composition Download PDFInfo
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- US20140128521A1 US20140128521A1 US13/497,581 US201113497581A US2014128521A1 US 20140128521 A1 US20140128521 A1 US 20140128521A1 US 201113497581 A US201113497581 A US 201113497581A US 2014128521 A1 US2014128521 A1 US 2014128521A1
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- polysiloxane compound
- molecular polysiloxane
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- 0 [1*][Si](C)(OC[SiH](C)C)O[Si](C)(C)C.[2*][Si](C)(OC[SiH](C)C)O[Si](C)(C)C Chemical compound [1*][Si](C)(OC[SiH](C)C)O[Si](C)(C)C.[2*][Si](C)(OC[SiH](C)C)O[Si](C)(C)C 0.000 description 9
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- 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
- C09K3/00—Materials not provided for elsewhere
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- 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
- D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
- D21H17/72—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
- C09D5/1675—Polyorganosiloxane-containing compositions
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
- D21C9/083—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching with inorganic compounds
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
- D21C9/086—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching with organic compounds or compositions comprising organic compounds
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
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- 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
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- 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
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/59—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon
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- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/02—Agents for preventing deposition on the paper mill equipment, e.g. pitch or slime control
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- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/02—Agents for preventing deposition on the paper mill equipment, e.g. pitch or slime control
- D21H21/04—Slime-control agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/045—Polysiloxanes containing less than 25 silicon atoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/38—Polysiloxanes modified by chemical after-treatment
- C08G77/382—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon
- C08G77/388—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/46—Block-or graft-polymers containing polysiloxane sequences containing polyether sequences
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/80—Siloxanes having aromatic substituents, e.g. phenyl side groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/06—Polysiloxanes containing silicon bound to oxygen-containing groups
Definitions
- the present invention relates to an anti-soiling agent composition, and more specifically concerns such an anti-soiling agent composition as to sufficiently prevent pitch contamination in a dry part.
- a paper-making process for producing paper is generally provided with a wire part in which a liquid prepared by dispersing pulp fibers in water is mounted on a net (wire) so that excessive water is allowed to naturally drop down so as to prepare wet paper, a press part that allows the wet paper to pass between paired press rolls so that by pressing it between the pressing rolls with a felt being interpolated therebetween so as to transfer moisture in the wet paper onto the felt so that the wet paper is dehydrated, a dry part that makes the wet paper that has passed through the pressing device in contact with a heated cylinder to be dried to form paper, and a reel part that winds and takes up the paper onto a rod referred to as a spool.
- a stain adhesion preventive agent for preventing the pitch adhesion has been known (for example, see Patent Document 1).
- a stain adhesion preventive agent has a composition containing a silicone oil and a fluorine-based surfactant whose viscosities are different from each other.
- an anti-soiling agent composition for a paper-making machine which is supplied and applied to a paper-making machine, and mainly composed of a side-chain type modified silicone oil or a side-chain/two-terminal type modified silicone oil, has been known (see Patent Document 2).
- the side-chain type modified silicone oil has its side chains substituted with an amino group or an epoxy group.
- the anti-soiling agent composition described in Patent Document 2 exerts a high fixability to the roll or the like of a paper-making machine, it is possible to give mold-releasing and water-repellant properties to a roll or the like immediately after the application thereto; however, this composition is not sufficient from the viewpoint of preventing the pitch adhesion.
- the present invention has been devised, and its object is to provide an anti-soiling agent composition that can sufficiently prevent pitch from adhering to the dry part regions.
- the present invention relates to (1) an anti-soiling agent compound having a low molecular polysiloxane compound represented by the following formula (1) and a high molecular polysiloxane compound represented by the following formula (2), and is characterized in that the number of modified groups per low molecular polysiloxane compound is in a range from 0.1 to 3, the number of modified groups per high molecular polysiloxane compound is in a range from 1.0 to 10, and the number m of repeating polysiloxane units in the low molecular polysiloxane compound and the number n of repeating polysiloxane units in the high molecular polysiloxane compound are allowed to satisfy the following relationship: 2m ⁇ n,
- substituent R 1 represents a methyl group or a modified group, with the repeating number m being set to an integer from 20 to 200], and
- substituent R 2 represents a methyl group or a modified group, with the repeating number n representing an integer].
- the present invention relates to (2) the anti-soiling agent composition described in the (1) in which the modified group in the low molecular polysiloxane compound is at least one member selected from the group consisting of an amino-modified group, an epoxy-modified group, a polyether-modified group, a carboxyl-modified group and a phenyl-modified group.
- the present invention relates to (3) the anti-soiling agent composition described in the (1) in which the modified group in the low molecular polysiloxane compound is represented by the following formula (3):
- each of substituent R 3 and substituent R 4 represents an alkylene group having 1 to 6 carbon atoms independently].
- the present invention relates to (4) the anti-soiling agent composition described in the (3) in which each of substituent R 3 and substituent R 4 represents an ethylene group or a propylene group.
- the present invention relates to (5) the anti-soiling agent composition described in the (3) in which a substituent R 3 represents a propylene group and a substituent R 4 represents an ethylene group.
- the present invention relates to (6) the anti-soiling agent composition described in the (1) in which the modified group in the low molecular polysiloxane compound is represented by the following formula (4):
- a substituent R 5 represents an alkylene group having 1 to 6 carbon atoms.
- the present invention relates to (7) the anti-soiling agent composition described in any one of the (1) to (6) in which the modified group in the high molecular polysiloxane compound is at least one member selected from the group consisting of an amino-modified group, an epoxy-modified group, a polyether-modified group, a carboxyl-modified group and a phenyl-modified group.
- the present invention relates to (8) the anti-soiling agent composition described in any one of the (1) to (6) in which the modified group in the high molecular polysiloxane compound is represented by the following formula (5):
- each of substituent R 6 and substituent R 7 represents an alkylene group having 1 to 6 carbon atoms independently].
- the present invention relates to (9) the anti-soiling agent composition described in the (8) in which each of substituent R 6 and substituent R 7 represents an ethylene group or a propylene group independently.
- the present invention relates to (10) the anti-soiling agent composition described in the (8) in which a substituent R 6 represents a propylene group and a substituent R 7 represents an ethylene group independently.
- the present invention relates to (11) the anti-soiling agent composition described in any one of the (1) to (6) in which the modified group in the high molecular polysiloxane compound is represented by the following formula (6):
- a substituent R 8 represents an alkylene group having 1 to 6 carbon atoms.
- the present invention relates to (12) the anti-soiling agent composition described in any one of the (1) to (11) in which in the high molecular polysiloxane compound, the number n of repeating polysiloxane units is an integer of less than 1430.
- the present invention relates to (13) the anti-soiling agent composition described in any one of the (1) to (12) which prevents pitch contamination in a dry part in a paper-making process.
- the present invention relates to (14) the anti-soiling agent composition described in any one of the (1) to (12) which is applied to a canvas of a dry part for use therein, and in which the number m of repeating polysiloxane units in the low molecular polysiloxane compound is an integer in a range from 20 to 50, and the number n of repeating polysiloxane units in the high molecular polysiloxane compound is an integer in a range from 40 to 280.
- the present invention relates to (15) the anti-soiling agent composition described in any one of the (1) to (12) which is applied to a cylinder of a dry part for use therein, and in which the number m of repeating polysiloxane units in the low molecular polysiloxane compound is an integer in a range from 20 to 50, and the number n of repeating polysiloxane units in the high molecular polysiloxane compound is an integer of 280 or more.
- the present invention relates to (16) the anti-soiling agent composition described in any one of the (1) to (15) in which the low molecular polysiloxane compound has a compounding ratio in a range from 0.25 to 10 parts by weight relative to 1 part by weight of the high molecular polysiloxane compound.
- An anti-soiling agent composition of the present invention includes a low molecular polysiloxane compound represented by formula (1) and a high molecular polysiloxane compound represented by formula (2), and in this structure, the number of modified groups per molecule of low molecular polysiloxane compound and high molecular polysiloxane compound is set in the above-mentioned range, and the number m and number n of repeating polysiloxane units in the two compounds are designed to satisfy the following relationship: 2 m n so that by applying the resultant anti-soiling agent composition to a dry part region, the high molecular polysiloxane compound exerts an effect for preventing pitch adhesion thereto, while the low molecular polysiloxane compound exerts an effect for dispersing the pitch. With this arrangement, the pitch adhesion to the dry part region can be sufficiently prevented. Additionally, in the present specification, the pitch includes adhesive solid matters, aggregates of paper powder, etc, generated in the paper-making
- the modified group in the low molecular polysiloxane is preferably an amino-modified group, an epoxy-modified group, a polyether-modified group, a carboxyl-modified group, or a phenyl-modified group
- the modified group in the high molecular polysiloxane is preferably an amino-modified group, an epoxy-modified group, a polyether-modified group, a carboxyl-modified group, or a phenyl-modified group.
- the anti-soiling agent compound of the present invention exerts an improved pitch dispersing effect.
- the anti-soiling agent compound of the present invention positively exerts an improved fixability of the coat film.
- the flowability of the anti-soiling agent composition is improved so that easy handling is achieved.
- the anti-soiling agent composition of the present invention is desirably used for preventing pitch contamination in the dry part in a paper-making process.
- the effect of pitch contamination prevention is positively exerted even when the application subject is a fibrous matter from which pitch is hardly separated. For this reason, the resultant composition becomes more effective when applied to be used for the canvas of the dry part.
- the effect of pitch contamination prevention is positively exerted even when the application subject has a high temperature. For this reason, the resultant composition becomes more effective when applied to be used for the cylinder of the dry part having a high temperature.
- the anti-soiling agent composition of the present invention makes it possible to effectively prevent pitch adhesion onto the dry part region.
- FIG. 1 is a schematic view that illustrates a dry part region of a dry part to which the anti-soiling agent composition of the present invention is applied.
- the anti-soiling agent composition in accordance with the present embodiment contains a low molecular polysiloxane compound, a high molecular polysiloxane compound, an emulsifier that emulsifies the low molecular polysiloxane compound and the high molecular polysiloxane compound, and water.
- the high molecular polysiloxane compound forms a coat film on the dry part region to prevent pitch from adhering thereto, and the low molecular polysiloxane compound exerts such a function as to disperse the pitch so as not to produce pitch lumps.
- the low molecular polysiloxane compound is represented by the following formula (1)
- a substituent R 1 represents a methyl group or a modified group. Additionally, the modified group does not include a methyl group.
- the methyl group and the modified group may be mixed in one molecule of the low molecular polysiloxane compound.
- a low molecular polysiloxane compound in which all the substituents R 1 are methyl groups and a low molecular polysiloxane compound in which all the substituents R 1 are modified groups may be used in a mixed manner.
- modified group in the low molecular polysiloxane compound an amino-modified group, an epoxy-modified group, a polyether-modified group, a carboxyl-modified group or a phenyl-modified group is proposed. Additionally, these modified groups may be mutually combined with one another.
- the modified group in the low molecular polysiloxane compound is preferably an amino-modified group, and the modified group is more preferably a modified group represented by the following formula (3) or a modified group represented by the following formula (4), and most preferably, the modified group is a modified group represented by the formula (3).
- the amino-alkylene group exerts an effect for dispersing pitch so that the pitch adhesion onto the dry part region is positively prevented.
- each of substituent R 3 and substituent R 4 represents an alkylene group having 1 to 6 carbon atoms. That is, the substituent R 2 and substituent R 3 may be the same as or different from each other as long as they have 1 to 6 carbon atoms.
- each of substituent R 3 and substituent R 4 is preferably an ethylene group or a propylene group independently, and more preferably, the substituent R 3 is a propylene group and the substituent R 4 is an ethylene group.
- substituent R 5 represents an alkylene group having 1 to 6 carbon atoms.
- the substituent R 5 is preferably a propylene group.
- the number of modified groups per molecule of the low molecular polysiloxane is preferably in a range from 0.1 to 3.0, and preferably from 0.5 to 2.0.
- the number of amino-modified groups per molecule refers to an average number of amino-modified groups contained in one molecule, which more specifically represents a value obtained by dividing the total number of amino-modified groups by the number of the molecules. That is, in the case when the number of amino-modified groups per molecule is 0.1, this means that the total number of amino-modified groups contained in 10 molecules is one.
- the repeating number m of polysiloxane units is an integer of from 20 to 200, preferably, from 20 to 100, and more preferably, from 20 to 50.
- the kinematic viscosity at 25° C. of the low molecular polysiloxane compound is preferably from 10 to 300 mm 2 /s
- the kinematic viscosity is less than 10 mm 2 /s, a disadvantage that the applied low molecular polysiloxane compound does not stay on the dry part region is caused in comparison with the structure in which the kinematic viscosity is set within the above-mentioned range, and when the kinematic viscosity exceeds 300 mm 2 /s, it becomes difficult to sufficiently disperse pitch in comparison with the structure in which the kinematic viscosity is set within the above-mentioned range.
- the high molecular polysiloxane compound is represented by the following formula (2)
- a substituent R 2 represents a methyl group or a modified group. Additionally, the modified group does not include a methyl group.
- the methyl group and the modified group may be mixed in one molecule of the high molecular polysiloxane compound.
- a high molecular polysiloxane compound in which all the substituents R 2 are methyl groups and a high molecular polysiloxane compound in which all the substituents R 2 are modified groups may be used in a mixed manner.
- modified group in the high molecular polysiloxane compound an amino-modified group, an epoxy-modified group, a polyether-modified group, a carboxyl-modified group or a phenyl-modified group is proposed. Additionally, these modified groups may be mutually combined with one another.
- the modified group in the high molecular polysiloxane compound is preferably an amino-modified group, and the modified group is more preferably a modified group represented by the following formula (5) or a modified group represented by the following formula (6).
- the compatibility to a low molecular polysiloxane compound having a similar modified group is improved so that the high molecular polysiloxane compound and low molecular polysiloxane compound exert an improved fixability of the coat film onto dry part region.
- each of substituent R 6 and substituent R 7 represents an alkylene group having 1 to 6 carbon atoms. That is, the substituent R 6 and substituent R 7 may be the same as or different from each other as long as they are alkylene groups having 1 to 6 carbon atoms.
- each of substituent R 6 and substituent R 7 is preferably an ethylene group or a propylene group independently, and more preferably, the substituent R 6 is a propylene group and the substituent R 7 is an ethylene group.
- substituent R 8 represents an alkylene group having 1 to 6 carbon atoms.
- the substituent R 8 is preferably a propylene group.
- the number of modified groups per molecule of the high molecular polysiloxane is preferably in a range from 1.0 to 10.0, and preferably from 1.0 to 6.0.
- the repeating number n of polysiloxane units is an integer of 1430 or less, and preferably, an integer of from 40 or more to less than 1430.
- the repeating number n of the polysiloxane units is 1430 or more
- a high molecular polysiloxane compound having a high viscosity becomes sticky and adheres to the surface of the dry part region, resulting in a defect that more pitch tends to easily adhere thereto.
- the number n of repeating polysiloxane units in the high molecular polysiloxane compound is an integer of 1430 or less, the flowability of the anti-soiling agent composition is improved so that easy handling is achieved.
- the kinematic viscosity at 25° C. of the high molecular polysiloxane compound is preferably from 40 to 90000 mm 2 /s.
- the kinematic viscosity is less than 40 mm 2 /s, a disadvantage arises in which the coat film of the high molecular polysiloxane is hardly formed on the dry part region in comparison with the structure in which the kinematic viscosity is set within the above-mentioned range, and when the kinematic viscosity exceeds 90000 mm 2 /s, gumming tends to occur during evaporation of moisture from the anti-soiling agent composition to cause stickiness and subsequent stains on paper, in comparison with the structure in which the kinematic viscosity is set within the above-mentioned range.
- the number m of repeating polysiloxane units in the low molecular polysiloxane compound is preferably an integer from 20 to 50 and the number n of repeating polysiloxane units in the high molecular polysiloxane compound is preferably an integer from 40 to 280.
- the pitch contamination preventive effect is positively exerted on the canvas.
- the number m of repeating polysiloxane units in the low molecular polysiloxane compound is preferably an integer from 20 to 50
- the number n of repeating polysiloxane units in the high molecular polysiloxane compound is preferably an integer of 280 or more.
- the number n of repeating polysiloxane units in the high molecular polysiloxane compound is preferably set in a range from 280 or more to 1430 or less.
- the number m of repeating polysiloxane units in the low molecular polysiloxane compound and the number n of repeating polysiloxane units in the high molecular polysiloxane compound are designed to satisfy the following relationship:
- the number n of repeating polysiloxane units in the high molecular polysiloxane compound is set to two times or more greater than the number m of repeating polysiloxane units in the low molecular polysiloxane compound.
- the number m of repeating units of the low molecular polysiloxane compound is set to an integer from 20 to 200 from the viewpoint of dispersibility of pitch
- the number n of repeating units of the high molecular polysiloxane compound is not necessarily set to any integer as long as it is a positive integer, and since it is necessary to exert a behavior different from that of the low molecular polysiloxane, that is, an improved fixability of a coat film, the number thereof needs to have a difference of two times or more.
- the low molecular polysiloxane compound is allowed to exert a pitch dispersing effect and the high molecular polysiloxane compound forms a coat film to exert an effect for preventing pitch adhesion.
- the anti-soiling agent composition relating to the present embodiment contains an emulsifier.
- the low molecular polysiloxane compound and the high molecular polysiloxane compound are allowed to have an improved emulsification stability.
- emulsifier examples include surfactants that emulsify the high molecular polysiloxane compound and the low molecular polysiloxane compound.
- the emulsifier is preferably prepared as a nonionic surfactant, and more preferably, as polyethylene decyl ether, polyethylene cetyl ether, or polyethylene stearyl ether.
- the resulting high molecular polysiloxane compound and low molecular polysiloxane compound not only have an improved emulsification stability, but also prevent discoloration of paper.
- the compounding ratio of the high molecular polysiloxane compound is preferably set to 1 to 20% by weight from the viewpoint of preventing pitch adhesion.
- the resulting composition tends to fail to sufficiently form a coat film in comparison with the structure in which the compounding ratio of the high molecular polysiloxane compound is set in the above-mentioned range, and in the case when the compounding ratio of the high molecular polysiloxane compound exceeds 20% by weight, the anti-soiling agent composition tends to cause a high tacking characteristic with the result that the paper surface might have wrinkles, in comparison with the structure in which the compounding ratio of the high molecular polysiloxane compound is set in the above-mentioned range.
- the compounding ratio of the low molecular polysiloxane compound is preferably set to 5 to 20% by weight from the viewpoint of pitch dispersion.
- the resulting composition tends to fail to sufficiently disperse pitch in comparison with the structure in which the compounding ratio of the low molecular polysiloxane compound is set in the above-mentioned range, and in the case when the compounding ratio of the low molecular polysiloxane compound exceeds 20% by weight, the pitch dispersion effect is saturated to cause a problem of high costs.
- the compounding ratio of the low molecular polysiloxane compound relative to one part by weight of the high molecular polysiloxane compound is preferably set in a range of from 0.1 to 10 parts by weight, and more preferably, from 0.2 to 9 parts by weight.
- the stickiness of the anti-soiling agent composition itself becomes high, with the result that the composition sometimes cannot be uniformly applied to the dry part, in comparison with the structure in which the compounding ratio thereof is set within the above-mentioned range, and in the case when the compounding ratio of the low molecular polysiloxane compound relative to one part by weight of the high molecular polysiloxane compound exceeds 10% by weight, the coat film is not fixed on the surface of the dry part region with the result that the dispersed pitch might be again adhered thereto, in comparison with the structure in which the compounding ratio thereof is set within the above-mentioned range.
- the compounding ratio of an emulsifier to 1 part by weight of a mixture of the high molecular polysiloxane compound and the low molecular polysiloxane compound is preferably set from 0.05 to 0.4 parts by weight, and more preferably, from 0.1 to 0.2 parts by weight.
- the compounding ratio of the emulsifier is less than 0.05 parts by weight, the emulsification stability tends to become insufficient in comparison with a structure having the compounding ratio of the emulsifier within the above-mentioned range, while in the case when the compounding ratio of the emulsifier exceeds 0.4 parts by weight, a problem arises in which the degree of discoloration of paper becomes greater in comparison with the structure having the compounding ratio of the emulsifier within the above-mentioned range.
- the anti-soiling agent composition of the present embodiment may contain additives, such as a chelating agent, a pH adjusting agent, an antiseptic agent, a viscosity adjusting agent, a lubricating agent, a wetting agent, a dusting inhibitor, a mold releasing agent, an adhesive agent, a surface modifying agent, a cleaning agent, a paper strength reinforcing agent, a sizing agent, a yield improving agent, a water repellent agent, an oil repellent agent, an anti-slipping agent, a lubricant, a softener, etc.
- additives such as a chelating agent, a pH adjusting agent, an antiseptic agent, a viscosity adjusting agent, a lubricating agent, a wetting agent, a dusting inhibitor, a mold releasing agent, an adhesive agent, a surface modifying agent, a cleaning agent, a paper strength reinforcing agent, a sizing agent, a yield improving agent, a
- Examples of the lubricating agent include: mineral oils, such as gear oil, cylinder oil, turbine oil and spindle oil; plant oils, such as coconut oil, linseed oil, castor oil, rapeseed oil and corn oil; paraffins, such as fluidizing paraffin and iso-paraffin; and synthesized oils, such as polyisobutylene, polybutene, maleated polybutene, polyethylene wax and microwax.
- mineral oils such as gear oil, cylinder oil, turbine oil and spindle oil
- plant oils such as coconut oil, linseed oil, castor oil, rapeseed oil and corn oil
- paraffins such as fluidizing paraffin and iso-paraffin
- synthesized oils such as polyisobutylene, polybutene, maleated polybutene, polyethylene wax and microwax.
- the anti-soiling agent composition is prepared through processes in which a high molecular polysiloxane compound, a low molecular polysiloxane compound and an emulsifier are added to water and these are then stirred so that the high molecular polysiloxane compound and the low molecular polysiloxane compound are emulsified to produce an anti-soiling agent composition.
- Such a stirring process is carried out by using a mixer, a homogenizer, a mill or the like, on demand.
- FIG. 1 is a schematic view that illustrates a dry part region of a dry part to which an anti-soiling agent composition in accordance with the present invention is applied.
- the anti-soiling agent composition is used for a dry part D.
- the dry part D is provided with a paper body W, a plurality of cylinders D 1 , D 2 , D 3 , D 4 , D 5 , D 6 , D 7 and D 8 (hereinafter, referred to “D 1 to D 8 ”), each having a cylindrical shape, which are used for heating and drying the paper body W, canvases K 1 and K 2 for use in pressing the paper body onto the cylinders D 1 to D 8 , a canvas roll KR that guides the canvases K 1 and K 2 , breaker stack rolls B that gently adjust the flatness and paper thickness of the dried paper body W, and a calendar roll C that adjusts the flatness and paper thickness of the dried paper body W.
- the paper body W is pressed onto the surfaces of the rotating cylinders D 1 to D 8 by the canvases K 1 and K 2 .
- the paper body W is allowed to adhere to the cylinders D 1 to D 8 so as to be simultaneously heated and dried.
- the paper body W is sandwiched by the breaker stack rolls B, and then made into a high-density state by the calendar roll C.
- the anti-soiling agent composition is directly applied respectively at positions indicated by arrows A.
- the applying method of the anti-soiling agent composition is not particularly limited, and for example, by using a scattering nozzle or the like, a liquid-state shower system, a mist-state atomizing system or the like is used.
- the anti-soiling agent composition may be sprayed while the scattering nozzle is being slid in a paper width direction. By spraying the anti-soiling agent composition over the dry part, the pitch contamination can be prevented.
- the sprayed amount of the anti-soiling agent composition per unit area of paper passing therethrough is preferably set in a range from 10 ⁇ g/m 2 to 10000 ⁇ g/m 2 , and more preferably from 30 ⁇ g/m 2 to 1000 ⁇ g/m 2 , as a solid component of the polysiloxane compound.
- the anti-soiling agent composition When the sprayed amount is less than 10 ⁇ g/m 2 , the anti-soiling agent composition is not sufficiently adhered to the surface of the dry part region, with the result that the pitch adhesion is not sufficiently suppressed, in comparison with the structure in which the sprayed amount is set within the above-mentioned range. Moreover, when the sprayed amount exceeds 10000 ⁇ g/m 2 , the excessive portion is accumulated on the surface of the dry part region, with the result that pitch is involved therein to increase stains and the meshes of the canvases tend to be clogged, in comparison with the structure in which the sprayed amount is set within the above-mentioned range.
- the anti-soiling agent composition relating to the present embodiment contains an emulsifier
- the emulsifier is not necessarily required to be contained when the high molecular polysiloxane compound and the low molecular polysiloxane compound are water soluble.
- the low molecular polysiloxane compound (formula (1)) and the high molecular polysiloxane compound (formula (2)) have methyl groups
- some of the methyl groups may be substituted with an epoxy-modified group, an alkyl group (except for a methyl group), a polyether group, a carboxyl group or an aralkyl group. Only one kind of these may be included in a molecule, or a plurality of kinds thereof may be mixed therein.
- an epoxy alkyl group or an epoxy polyether group is proposed.
- the anti-soiling agent compound is applied to the dry part region in the dry part; however, the composition may be applied not only to the dry part, but also to the press part and the reel part.
- Table 1 shows a modified group used in the low molecular polysiloxane compound represented by formula (1), a modified group used in the high molecular polysiloxane compound represented by formula (2), the number of the modified groups per molecule, the number of repeating units and the kinematic viscosity at 25° C. of the low molecular polysiloxane compound, as well as the number of the modified groups per molecule, the number of repeating units and the kinematic viscosity at 25° C. of the high molecular polysiloxane compound.
- Each of anti-soiling agent compositions of examples 1 to 15 and comparative examples 1 to 8 was sprayed on a cylinder D 1 of a cylindrical dryer (dry part, made by Kobayashi Engineering Works, Ltd.) shown in FIG. 1 at a rate of 5 ml/min, and after having been operated for 8 hours, the weight of pitch dropped below the cylinder D 1 was measured. The results obtained are shown in Table 2. Additionally, in Table 2, with respect to comparative example 3, since the surface of the cylinder D 1 became sticky to cause an extreme increase in the amount of pitch, the evaluation was terminated.
- a doctor blade is attached to a cylinder D 3 of the cylindrical dryer shown in FIG. 1 so as to make its blade edge in contact with the surface thereof.
- pitch adhered to the cylinder D 3 was scraped off and collected by the blade edge of the doctor blade.
- each of the anti-soiling agent compositions of examples 1 to 15 and comparative examples 1 to 8 was sprayed at a rate of 5 ml/min, and after having been operated for 8 hours, the weight of pitch accumulated on the blade edge of the doctor blade was measured.
- Table 2 shows that the evaluation was terminated.
- each of the anti-soiling agent compositions of examples 1 to 15 and comparative example 1 to 8 was sprayed at a rate of 5 ml/min, and the dryer was operated for one week.
- each of the anti-soiling agent compositions of examples 1 to 15 and comparative example 1 to 8 was sprayed at a rate of 5 ml/min, and the dryer was operated for one week.
- a substituent represented by the following formula (3) a substituent represented by the following formula (9), an epoxy-modified group, a polyether-modified group, a carboxyl-modified group or a phenyl-modified group was used
- a substituent represented by the following formula (5) a substituent represented by the following formula (6)
- a substituent represented by the following formula (10) an epoxy-modified group, a polyether-modified group, a carboxyl-modified group or a phenyl-modified group was used.
- substituent R 1 and substituent R 2 other than the modified groups are methyl groups.
- cylinder evaluation 1 and cylinder evaluation 2 in order to carry out the same processes as those of example 8, the evaluations were executed under conditions that the number of modified groups per molecule of the low molecular polysiloxane compound represented by formula (1) in each of the anti-soiling agent compositions of examples 16 to 58 was adjusted to 1.12, the number m of repeating units was adjusted to 40, and the kinematic viscosity at 25° C. was adjusted to 40 mm 2 /s, and that the number of modified groups per molecule of the high molecular polysiloxane compound represented by formula (2) therein was adjusted to 5.31, the number n of repeating units was adjusted to 1360, and the kinematic viscosity at 25° C. was adjusted to 80000 mm 2 /s.
- Table 4 shows the results thus obtained.
- the table also again shows the results obtained by using the anti-soiling agent compositions of example 3 and example 8.
- the anti-soiling agent composition of the present invention makes it possible to sufficiently prevent pitch adhesion onto the dry part region.
- the anti-soiling agent composition of the present invention is applied to a dry part region and used during paper-making processes.
- the pitch adhesion onto the dry part region can be prevented, it is possible to efficiently improve the yield in the paper production.
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- Life Sciences & Earth Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Materials Engineering (AREA)
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JP (1) | JP4868629B1 (zh) |
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CN (1) | CN103003490B (zh) |
CA (1) | CA2773123C (zh) |
ES (1) | ES2534372T3 (zh) |
MY (1) | MY160672A (zh) |
TW (1) | TWI410462B (zh) |
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Cited By (11)
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US20150148511A1 (en) * | 2013-07-29 | 2015-05-28 | The Procter & Gamble Company | Organopolysiloxane Polymers |
CN105332320A (zh) * | 2015-09-28 | 2016-02-17 | 威海翔宇环保科技股份有限公司 | 一种矿物油类的造纸烘缸剥离剂 |
US9540489B2 (en) | 2013-07-29 | 2017-01-10 | The Procter & Gamble Company | Blocky cationic organopolysiloxane |
US9580670B2 (en) | 2013-07-29 | 2017-02-28 | The Procter & Gamble Company | Consumer product compositions comprising organopolysiloxane conditioning polymers |
US9611362B2 (en) | 2013-07-29 | 2017-04-04 | The Procter & Gamble Company | Cationic organopolysiloxanes |
US9701929B2 (en) | 2013-07-29 | 2017-07-11 | The Procter & Gamble Company | Consumer product compositions comprising organopolysiloxane emulsions |
US20180100270A1 (en) * | 2015-03-27 | 2018-04-12 | Maintech Co., Ltd. | Contamination inhibitor composition |
US9963470B2 (en) | 2013-07-29 | 2018-05-08 | The Procter & Gamble Company | Branched blocky cationic organopolysiloxane |
US9993418B2 (en) | 2013-07-29 | 2018-06-12 | The Procter & Gamble Company | Benefit agent emulsions and consumer products containing such emulsions |
US10081910B2 (en) | 2013-07-29 | 2018-09-25 | The Procter & Gamble Company | Absorbent articles comprising organopolysiloxane conditioning polymers |
JP2020165066A (ja) * | 2019-03-29 | 2020-10-08 | 株式会社メンテック | 汚染防止剤組成物 |
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WO2014018989A1 (en) * | 2012-07-27 | 2014-01-30 | The Procter & Gamble Company | Absorbent articles comprising organopolysiloxane conditioning polymers |
CN103225226B (zh) * | 2013-04-15 | 2016-01-27 | 金红叶纸业集团有限公司 | 造纸设备及造纸方法 |
WO2016109534A1 (en) * | 2014-12-30 | 2016-07-07 | Momentive Performance Materials Inc. | Siloxane coordination polymers |
CN109790683B (zh) * | 2016-09-29 | 2020-11-24 | 明答克株式会社 | 污染防止剂组合物及污染防止方法 |
WO2018066046A1 (ja) * | 2016-10-04 | 2018-04-12 | 日産自動車株式会社 | 防汚構造体 |
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JPH0741677A (ja) * | 1993-07-26 | 1995-02-10 | Toray Dow Corning Silicone Co Ltd | 耐熱性に優れたジオルガノポリシロキサン組成物 |
JP3408320B2 (ja) | 1994-04-28 | 2003-05-19 | タイホー工業株式会社 | 抄紙ドライヤー工程用汚れ付着防止剤 |
US6294608B1 (en) * | 1995-05-11 | 2001-09-25 | Wacker-Chemie Gmbh | Emulsions of organosilicon compounds for imparting water repellency to building materials |
JP3593870B2 (ja) * | 1998-01-30 | 2004-11-24 | 日本大昭和板紙株式会社 | 抄紙機のカンバス汚染防止方法及びそのための抄紙機のドライパート |
JP2002256214A (ja) * | 2001-02-28 | 2002-09-11 | Nippon Unicar Co Ltd | 塗料組成物及びそれを塗布してなる塗装物品 |
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WO2005010115A1 (en) * | 2003-07-16 | 2005-02-03 | Dow Corning Corporation | Coating compositions comprising epoxy resins and aminofunctional silicone resins |
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2011
- 2011-07-04 US US13/497,581 patent/US20140128521A1/en not_active Abandoned
- 2011-07-04 JP JP2011535816A patent/JP4868629B1/ja active Active
- 2011-07-04 KR KR1020127008684A patent/KR101226986B1/ko active IP Right Grant
- 2011-07-04 CA CA2773123A patent/CA2773123C/en not_active Expired - Fee Related
- 2011-07-04 EP EP11817498.6A patent/EP2565326B1/en active Active
- 2011-07-04 ES ES11817498.6T patent/ES2534372T3/es active Active
- 2011-07-04 WO PCT/JP2011/003799 patent/WO2013005247A1/ja active Application Filing
- 2011-07-04 CN CN201180003570.0A patent/CN103003490B/zh active Active
- 2011-07-04 MY MYPI2012001395A patent/MY160672A/en unknown
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2012
- 2012-04-03 TW TW101111800A patent/TWI410462B/zh active
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2015
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US10081910B2 (en) | 2013-07-29 | 2018-09-25 | The Procter & Gamble Company | Absorbent articles comprising organopolysiloxane conditioning polymers |
US9993418B2 (en) | 2013-07-29 | 2018-06-12 | The Procter & Gamble Company | Benefit agent emulsions and consumer products containing such emulsions |
US9540489B2 (en) | 2013-07-29 | 2017-01-10 | The Procter & Gamble Company | Blocky cationic organopolysiloxane |
US9580670B2 (en) | 2013-07-29 | 2017-02-28 | The Procter & Gamble Company | Consumer product compositions comprising organopolysiloxane conditioning polymers |
US9611362B2 (en) | 2013-07-29 | 2017-04-04 | The Procter & Gamble Company | Cationic organopolysiloxanes |
US9701929B2 (en) | 2013-07-29 | 2017-07-11 | The Procter & Gamble Company | Consumer product compositions comprising organopolysiloxane emulsions |
US9963470B2 (en) | 2013-07-29 | 2018-05-08 | The Procter & Gamble Company | Branched blocky cationic organopolysiloxane |
US20150148511A1 (en) * | 2013-07-29 | 2015-05-28 | The Procter & Gamble Company | Organopolysiloxane Polymers |
US10414873B2 (en) * | 2013-07-29 | 2019-09-17 | The Procter & Gamble Company | Organopolysiloxane polymers |
US20180100270A1 (en) * | 2015-03-27 | 2018-04-12 | Maintech Co., Ltd. | Contamination inhibitor composition |
US10619299B2 (en) * | 2015-03-27 | 2020-04-14 | Maintech Co., Ltd. | Contamination inhibitor composition |
CN105332320A (zh) * | 2015-09-28 | 2016-02-17 | 威海翔宇环保科技股份有限公司 | 一种矿物油类的造纸烘缸剥离剂 |
JP2020165066A (ja) * | 2019-03-29 | 2020-10-08 | 株式会社メンテック | 汚染防止剤組成物 |
US11214710B2 (en) | 2019-03-29 | 2022-01-04 | Maintech Co., Ltd. | Anti-contamination agent composition |
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TWI410462B (zh) | 2013-10-01 |
US20150345080A1 (en) | 2015-12-03 |
MY160672A (en) | 2017-03-15 |
KR101226986B1 (ko) | 2013-01-29 |
JP4868629B1 (ja) | 2012-02-01 |
CA2773123A1 (en) | 2012-06-11 |
ES2534372T3 (es) | 2015-04-22 |
US9458572B2 (en) | 2016-10-04 |
JPWO2013005247A1 (ja) | 2015-02-23 |
CN103003490B (zh) | 2015-06-03 |
WO2013005247A1 (ja) | 2013-01-10 |
EP2565326A1 (en) | 2013-03-06 |
EP2565326A4 (en) | 2013-06-26 |
EP2565326B1 (en) | 2015-03-25 |
CN103003490A (zh) | 2013-03-27 |
CA2773123C (en) | 2016-01-12 |
TW201247783A (en) | 2012-12-01 |
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