CN107524054A - Wet curtain paper based on high molecular polymer - Google Patents
Wet curtain paper based on high molecular polymer Download PDFInfo
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- CN107524054A CN107524054A CN201710671243.1A CN201710671243A CN107524054A CN 107524054 A CN107524054 A CN 107524054A CN 201710671243 A CN201710671243 A CN 201710671243A CN 107524054 A CN107524054 A CN 107524054A
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- wet curtain
- curtain paper
- high molecular
- molecular polymer
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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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
- D21H11/04—Kraft or sulfate pulp
-
- 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
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
- D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
- D21H17/45—Nitrogen-containing groups
-
- 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
- D21H17/47—Condensation polymers of aldehydes or ketones
- D21H17/48—Condensation polymers of aldehydes or ketones with phenols
-
- 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
- D21H17/63—Inorganic compounds
- D21H17/66—Salts, e.g. alums
-
- 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
- D21H17/74—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic and inorganic material
-
- 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
- D21H21/14—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 characterised by function or properties in or on the paper
-
- 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
- D21H21/14—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 characterised by function or properties in or on the paper
- D21H21/22—Agents rendering paper porous, absorbent or bulky
- D21H21/24—Surfactants
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Paper (AREA)
Abstract
The invention discloses wet curtain paper of the present invention based on high molecular polymer, including following components：Masson pine sulfate pulp, China fir sulfate pulp, leaf wood sulfate pulp, NMF, giantreed powder, phenolic resin, aluminium chloride, surfactant, diallyl dimethyl ammoniumchloride.The present invention strengthens the intensity of wet curtain paper and water-retaining property by adding NMF, giantreed powder, phenolic resin, aluminium chloride, surfactant, diallyl dimethyl ammoniumchloride in paper pulp.
Description
Technical field
The present invention relates to a kind of wet curtain paper, and in particular to the wet curtain paper based on high molecular polymer.
Background technology
Curtain blower fan conditioning equipment substitutes traditional air-conditioning temperature-reducing equipment, has energy-saving and environmental protection, economical and practical excellent
Point.Its critical component is wet curtain, and manufacturing the material requirements evaporation of wet curtain, specific surface area is big, water imbibition is strong, cooling efficiency high, resistance
Not crisp, wet when losing small, dry very intensity is high, surface spikes are few, be not easy set-off thing, convenient cleaning, service life is long, cost is low,
Environmentally safe etc., to ensure the normal manufacture of wet curtain and product quality, wet curtain paper is the material of preferable manufacture wet curtain.
Wet curtain paper typically uses full needlebush pulp production, and product cost is high, and water imbibition, water-retaining property are poor, low intensity, needs
The chemicals production of higher dosage is added, therefore, existing wet curtain paper low intensity, water-retaining property, water imbibition are poor, therefore, existing wet
Curtain paper service life is short.
The content of the invention
The technical problems to be solved by the invention are that existing wet curtain paper service life is short, and it is an object of the present invention to provide being based on macromolecule
The wet curtain paper of polymer, solve the problems, such as that existing wet curtain paper service life is short.
The present invention is achieved through the following technical solutions：
Wet curtain paper based on high molecular polymer, including following components：Masson pine sulfate pulp, China fir sulfate paper
Slurry, leaf wood sulfate pulp, NMF, giantreed powder, phenolic resin, aluminium chloride, surfactant, polydiene propyl group
Alkyl dimethyl ammonium chloride.
The present invention by paper pulp add NMF, giantreed powder, phenolic resin, aluminium chloride, surfactant,
Diallyl dimethyl ammoniumchloride strengthens the intensity of wet curtain paper and water-retaining property, add the wet curtain paper of phenolic resin have it is excellent
Water absorbing properties and water-retaining property, add the purpose of aluminium chloride in negatively charged in paper pulp, mutually exclusive colloid
Sicker, trickle sicker, superfine pigment particle, fiber fines etc. carry out electric charge pretreatment, in the case where dosage is less, its
The de- steady, aggregation of the effect main trickle sicker particle caused in slurry, colloid sicker and superfine pigment suspended particles, wadding
Solidifying, coagulation；Giantreed powder can improve the intensity of wet curtain paper；The purpose of diallyl dimethyl ammoniumchloride is, with alkali formula
The composite flocculation that aluminium chloride acts synergistically to tiny component in paper pulp, this Polymer adsorption is in still overall negatively charged aggregation
Particle surface, positively charged region, local positively charged region and the negatively charged part of neighboring particles are formed in this place
Generation electrostatic attraction, gather so as to cause to wad a quilt with cotton again.Wet curtain paper intensity height, water absorbing and retaining properties chamber in the present invention, therefore, it is used
Long lifespan.
The described wet curtain paper based on high molecular polymer, include the component of following weight fraction：70-100 part masson pines
Sulfate pulp, 10-15 part China firs sulfate pulp, 20-30 part leaf woods sulfate pulp, 20-30 parts NMF, 40-50
Part giantreed powder, 40-50 parts phenolic resin, 2-3 parts aluminium chloride, 5-10 parts surfactant, 2-3 part polydiene propyl group two
Ammonio methacrylate.The present invention is excellent to have selected optimal component proportion scope with reference to the cost of each component by test of many times.
The described wet curtain paper based on high molecular polymer, include the component of following weight fraction：85 parts of masson pine sulfuric acid
Salt paper pulp, 13 parts of China fir sulfate pulps, 25 parts of leaf wood sulfate pulps, 25 parts of NMFs, 45 parts of giantreed powder, 45 parts of phenol
Urea formaldehyde, 3 parts of aluminium chlorides, 8 parts of surfactants, 3 parts of diallyl dimethyl ammoniumchlorides.It is excellent to have selected optimal group
Distribution ratio
The phenolic resin includes following components：Phenol, formaldehyde, lignin, melamine, alkali.It is phenol, formaldehyde, wooden
Element, melamine, alkali reaction generation phenolic resin, modified phenolic is prepared using lignin and melamine as modifying agent
Resin, the deflection of wet curtain paper can not only be improved, and its toughness can be improved, so as to increase the processing characteristics of wet curtain paper.
The mass ratio of the phenol and lignin is 100：10~60, the mass ratio of phenol and melamine is 100：10~
50, the mass ratio of phenol and alkali is 100：2~8, the mol ratio of phenol and formaldehyde is 1：2~4.The present invention by test of many times,
It is excellent to have selected optimal component proportion scope with reference to the cost of each component.
The present invention compared with prior art, has the following advantages and advantages：
1st, the present invention passes through addition NMF, giantreed powder, phenolic aldehyde in paper pulp based on the wet curtain paper of high molecular polymer
Resin, aluminium chloride, surfactant, diallyl dimethyl ammoniumchloride strengthen the intensity of wet curtain paper and water-retaining property；
2nd, the present invention is prepared by the use of lignin and melamine based on the wet curtain paper of high molecular polymer as modifying agent
Phenol-formaldehyde resin modified, the deflection of wet curtain paper can not only be improved, and its toughness can be improved, so as to increase the processing of wet curtain paper
Performance；
3rd, the wet curtain paper processing technology of the invention based on high molecular polymer is simple, and wet curtain paper end properties are good.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment, the present invention is made
Further to describe in detail, exemplary embodiment of the invention and its explanation are only used for explaining the present invention, are not intended as to this
The restriction of invention.
Embodiment 1
Wet curtain paper of the invention based on high molecular polymer, including following components：Masson pine sulfate pulp, China fir sulfuric acid
Salt paper pulp, leaf wood sulfate pulp, NMF, giantreed powder, phenolic resin, aluminium chloride, surfactant, polydiene
Diallyidimethylammonium chloride.The phenolic resin includes following components：Phenol, formaldehyde, lignin, melamine, alkali.Phenol,
Formaldehyde, lignin, melamine, alkali reaction generation phenolic resin, are prepared into using lignin and melamine as modifying agent
To phenol-formaldehyde resin modified, the deflection of wet curtain paper can not only be improved, and its toughness can be improved, so as to increase adding for wet curtain paper
Work performance.The mass ratio of the phenol and lignin is 100：10~60, the mass ratio of phenol and melamine is 100：10~
50, the mass ratio of phenol and alkali is 100：2~8, the mol ratio of phenol and formaldehyde is 1：2~4.The present invention by test of many times,
It is excellent to have selected optimal component proportion scope with reference to the cost of each component.
The present invention by paper pulp add NMF, giantreed powder, phenolic resin, aluminium chloride, surfactant,
Diallyl dimethyl ammoniumchloride strengthens the intensity of wet curtain paper and water-retaining property, add the wet curtain paper of phenolic resin have it is excellent
Water absorbing properties and water-retaining property, add the purpose of aluminium chloride in negatively charged in paper pulp, mutually exclusive colloid
Sicker, trickle sicker, superfine pigment particle, fiber fines etc. carry out electric charge pretreatment, in the case where dosage is less, its
The de- steady, aggregation of the effect main trickle sicker particle caused in slurry, colloid sicker and superfine pigment suspended particles, wadding
Solidifying, coagulation；Giantreed powder can improve the intensity of wet curtain paper；The purpose of diallyl dimethyl ammoniumchloride is, with alkali formula
The composite flocculation that aluminium chloride acts synergistically to tiny component in paper pulp, this Polymer adsorption is in still overall negatively charged aggregation
Particle surface, positively charged region, local positively charged region and the negatively charged part of neighboring particles are formed in this place
Generation electrostatic attraction, gather so as to cause to wad a quilt with cotton again.Wet curtain paper intensity height, water absorbing and retaining properties chamber in the present invention, therefore, it is used
Long lifespan.
Embodiment 2
Based on embodiment 1, the wet curtain paper based on high molecular polymer, include the component of following weight fraction：70-
100 parts of masson pine sulfate pulps, 10-15 part China firs sulfate pulp, 20-30 part leaf woods sulfate pulp, 20-30 parts are protected
Humectant, 40-50 part giantreeds powder, 40-50 parts phenolic resin, 2-3 parts aluminium chloride, 5-10 parts surfactant, 2-3 parts are gathered
Diallyldimethylammonium chloride.The present invention is excellent to have selected optimal group distribution with reference to the cost of each component by test of many times
Compare scope.The deflection of wet curtain paper to obtaining is tested, the results showed that, its flexibility be 15 ° when, deflection be 90~
100mN, it can be seen that, wet curtain paper prepared by the present invention can meet the requirement used；The toughness of wet curtain paper to obtaining is carried out
Test, the results showed that, its bursting strength is in 180-200, air permeability 18-20um/Pas, suction head 40-43mm/10min, tightly
Spend 0.55g/cm3, moisture 7-7.5%.
Embodiment 3
Based on above-described embodiment, the wet curtain paper based on high molecular polymer, include the component of following weight fraction：
85 parts of masson pine sulfate pulps, 13 parts of China fir sulfate pulps, 25 parts of leaf wood sulfate pulps, 25 parts of NMFs, 45 parts
Giantreed powder, 45 parts of phenolic resin, 3 parts of aluminium chlorides, 8 parts of surfactants, 3 parts of diallyl dimethyl ammoniumchlorides.
It is excellent to have selected optimal component proportion.
The deflection of wet curtain paper to obtaining is tested, the results showed that, it is when flexibility is 15 °, deflection 100mN,
As can be seen here, the wet curtain paper that prepared by the present invention can meet the requirement used；The toughness of wet curtain paper to obtaining is tested, knot
Fruit shows, its bursting strength is 200, air permeability 20um/Pas, suction head 43mm/10min, tightness 0.55g/cm3, moisture
7.5%.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (5)
1. the wet curtain paper based on high molecular polymer, it is characterised in that including following components：Masson pine sulfate pulp, China fir
It is sulfate pulp, leaf wood sulfate pulp, NMF, giantreed powder, phenolic resin, aluminium chloride, surfactant, poly-
Diallyldimethylammonium chloride.
2. the wet curtain paper according to claim 1 based on high molecular polymer, it is characterised in that including following weight fraction
Component：70-100 part masson pines sulfate pulp, 10-15 part China firs sulfate pulp, 20-30 part leaf wood sulfate papers
Slurry, 20-30 parts NMF, 40-50 part giantreeds powder, 40-50 parts phenolic resin, 2-3 parts aluminium chloride, 5-10 parts surface are lived
Property agent, 2-3 part diallyl dimethyl ammoniumchlorides.
3. the wet curtain paper according to claim 1 based on high molecular polymer, it is characterised in that, including following weight point
Several components：85 parts of masson pine sulfate pulps, 13 parts of China fir sulfate pulps, 25 parts of leaf wood sulfate pulps, 25 parts of guarantors
Humectant, 45 parts of giantreed powder, 45 parts of phenolic resin, 3 parts of aluminium chlorides, 8 parts of surfactants, 3 parts of polydiene dimethylamines
Ammonium chloride.
4. the wet curtain paper based on high molecular polymer according to any one claim in claim 1-3, its feature
It is, the phenolic resin includes following components：Phenol, formaldehyde, lignin, melamine, alkali.
5. the wet curtain paper according to claim 4 based on high molecular polymer, it is characterised in that the phenol and lignin
Mass ratio be 100：10~60, the mass ratio of phenol and melamine is 100：10~50, the mass ratio of phenol and alkali is
100：2~8, the mol ratio of phenol and formaldehyde is 1：2~4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671243.1A CN107524054A (en) | 2017-08-08 | 2017-08-08 | Wet curtain paper based on high molecular polymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671243.1A CN107524054A (en) | 2017-08-08 | 2017-08-08 | Wet curtain paper based on high molecular polymer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107524054A true CN107524054A (en) | 2017-12-29 |
Family
ID=60680809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710671243.1A Pending CN107524054A (en) | 2017-08-08 | 2017-08-08 | Wet curtain paper based on high molecular polymer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107524054A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111074681A (en) * | 2019-12-27 | 2020-04-28 | 南通得力净化器材厂有限公司 | Yellowing-resistant high-water-absorption modified wood pulp paper and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330740A (en) * | 1998-06-17 | 2002-01-09 | 尼勒纤维纸浆和纸公司 | Arundo donax pulp, paper products and particle board |
| CN101033590A (en) * | 2007-01-29 | 2007-09-12 | 永州湘江纸业有限责任公司 | Method of producing wet curtain paper |
| CN102432789A (en) * | 2011-09-29 | 2012-05-02 | 山东圣泉化工股份有限公司 | Phenolic resin for wet curtain paper, preparation method of phenolic resin and preparation method of wet curtain paper |
| CN102718935A (en) * | 2012-07-09 | 2012-10-10 | 山东圣泉化工股份有限公司 | Preparation method of phenolic resin for wet curtain paper and preparation method of wet curtain paper |
| CN103013037A (en) * | 2012-12-14 | 2013-04-03 | 山东圣泉化工股份有限公司 | Phenolic resin modifier for wet curtain paper and phenolic resin for wet curtain |
| CN104145060A (en) * | 2012-03-01 | 2014-11-12 | 巴斯夫欧洲公司 | Process for the manufacture of paper and paperboard |
| CN107476131A (en) * | 2017-09-05 | 2017-12-15 | 广州市咏润纸业科技有限公司 | It is a kind of using waste and old coated paper envelope as wet curtain paper of raw material and preparation method thereof |
-
2017
- 2017-08-08 CN CN201710671243.1A patent/CN107524054A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330740A (en) * | 1998-06-17 | 2002-01-09 | 尼勒纤维纸浆和纸公司 | Arundo donax pulp, paper products and particle board |
| CN101033590A (en) * | 2007-01-29 | 2007-09-12 | 永州湘江纸业有限责任公司 | Method of producing wet curtain paper |
| CN102432789A (en) * | 2011-09-29 | 2012-05-02 | 山东圣泉化工股份有限公司 | Phenolic resin for wet curtain paper, preparation method of phenolic resin and preparation method of wet curtain paper |
| CN104145060A (en) * | 2012-03-01 | 2014-11-12 | 巴斯夫欧洲公司 | Process for the manufacture of paper and paperboard |
| CN102718935A (en) * | 2012-07-09 | 2012-10-10 | 山东圣泉化工股份有限公司 | Preparation method of phenolic resin for wet curtain paper and preparation method of wet curtain paper |
| CN103013037A (en) * | 2012-12-14 | 2013-04-03 | 山东圣泉化工股份有限公司 | Phenolic resin modifier for wet curtain paper and phenolic resin for wet curtain |
| CN107476131A (en) * | 2017-09-05 | 2017-12-15 | 广州市咏润纸业科技有限公司 | It is a kind of using waste and old coated paper envelope as wet curtain paper of raw material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈继伟等: "湿帘纸的研制", <<造纸科学与技术>> * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111074681A (en) * | 2019-12-27 | 2020-04-28 | 南通得力净化器材厂有限公司 | Yellowing-resistant high-water-absorption modified wood pulp paper and preparation method thereof |
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Application publication date: 20171229 |