EP0984084A3 - Procédé de fabrication de fibres de cellulose - Google Patents

Procédé de fabrication de fibres de cellulose Download PDF

Info

Publication number: EP0984084A3
Authority: EP; European Patent Office
Prior art keywords: cellulosic fibres; urea; manufacturing cellulosic; fibres; manufacturing
Prior art date: 1994-09-06
Legal status (The legal status 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 status listed.): Granted

Application number

EP99123392A

Other languages

German (de)

English (en)

Other versions

EP0984084B1 (fr

EP0984084A2 (fr

Inventor

Wolfgang Dr. Schrott

Wolfram Badura

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

BASF SE

Original Assignee

BASF SE

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.)

1994-09-06

Filing date

1995-08-22

Publication date

2000-04-19

1995-08-22 Application filed by BASF SE filed Critical BASF SE

2000-03-08 Publication of EP0984084A2 publication Critical patent/EP0984084A2/fr

2000-04-19 Publication of EP0984084A3 publication Critical patent/EP0984084A3/fr

2003-01-02 Application granted granted Critical

2003-01-02 Publication of EP0984084B1 publication Critical patent/EP0984084B1/fr

2015-08-22 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Classifications

- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/02—Chemical after-treatment of artificial filaments or the like during manufacture of cellulose, cellulose derivatives, or proteins
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/35—Heterocyclic compounds
- D06M13/355—Heterocyclic compounds having six-membered heterocyclic rings
- D06M13/358—Triazines
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/395—Isocyanates
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/402—Amides imides, sulfamic acids
- D06M13/419—Amides having nitrogen atoms of amide groups substituted by hydroxyalkyl or by etherified or esterified hydroxyalkyl groups
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/402—Amides imides, sulfamic acids
- D06M13/432—Urea, thiourea or derivatives thereof, e.g. biurets; Urea-inclusion compounds; Dicyanamides; Carbodiimides; Guanidines, e.g. dicyandiamides
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
- D06M15/423—Amino-aldehyde resins
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
- D06M15/568—Reaction products of isocyanates with polyethers
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
- D06M15/572—Reaction products of isocyanates with polyesters or polyesteramides
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/35—Abrasion, pilling or fibrillation resistance

Landscapes

Engineering & Computer Science (AREA)
Textile Engineering (AREA)
Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
General Chemical & Material Sciences (AREA)
Polyurethanes Or Polyureas (AREA)
Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Polysaccharides And Polysaccharide Derivatives (AREA)
Artificial Filaments (AREA)
Chemical Treatment Of Fibers During Manufacturing Processes (AREA)

EP99123392A 1994-09-06 1995-08-22 Procédé de fabrication de fibres de cellulose Expired - Lifetime EP0984084B1 (fr)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
DE4431635		1994-09-06
DE4431635A DE4431635A1 (de)	1994-09-06	1994-09-06	Verfahren zur Herstellung von Cellulosefasern
EP95931179A EP0779942B1 (fr)	1994-09-06	1995-08-22	Procede de fabrication de fibres de cellulose

Related Parent Applications (1)

Application Number	Title	Priority Date	Filing Date
EP95931179A Division EP0779942B1 (fr)	1994-09-06	1995-08-22	Procede de fabrication de fibres de cellulose

Publications (3)

Publication Number	Publication Date
EP0984084A2 EP0984084A2 (fr)	2000-03-08
EP0984084A3 true EP0984084A3 (fr)	2000-04-19
EP0984084B1 EP0984084B1 (fr)	2003-01-02

Family

ID=6527487

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
EP95931179A Expired - Lifetime EP0779942B1 (fr)	1994-09-06	1995-08-22	Procede de fabrication de fibres de cellulose
EP99123391A Expired - Lifetime EP0985747B1 (fr)	1994-09-06	1995-08-22	Procédé de fabrication de fibres de cellulose
EP99123392A Expired - Lifetime EP0984084B1 (fr)	1994-09-06	1995-08-22	Procédé de fabrication de fibres de cellulose

Family Applications Before (2)

Application Number	Title	Priority Date	Filing Date
EP95931179A Expired - Lifetime EP0779942B1 (fr)	1994-09-06	1995-08-22	Procede de fabrication de fibres de cellulose
EP99123391A Expired - Lifetime EP0985747B1 (fr)	1994-09-06	1995-08-22	Procédé de fabrication de fibres de cellulose

Country Status (8)

Country	Link
US (1)	US5776394A (fr)
EP (3)	EP0779942B1 (fr)
JP (1)	JPH10505389A (fr)
AT (3)	ATE230447T1 (fr)
DE (4)	DE4431635A1 (fr)
DK (1)	DK0779942T3 (fr)
ES (2)	ES2148552T3 (fr)
WO (1)	WO1996007780A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2532684A3 (fr) *	2003-11-28	2013-03-20	Eastman Chemical Company	Interpolymères de cellulose et procédé d'oxydation
US9410292B2 (en)	2012-12-26	2016-08-09	Kimberly-Clark Worldwide, Inc.	Multilayered tissue having reduced hydrogen bonding
US9416494B2 (en)	2012-12-26	2016-08-16	Kimberly-Clark Worldwide, Inc.	Modified cellulosic fibers having reduced hydrogen bonding
US8980054B2 (en)	2012-12-26	2015-03-17	Kimberly-Clark Worldwide, Inc.	Soft tissue having reduced hydrogen bonding
KR102440861B1 (ko) *	2020-05-26	2022-09-05	오영세	라이오셀 섬유의 제조방법 및 이로부터 제조된 라이오셀 섬유
CN116926971B (zh) *	2023-06-30	2024-07-12	广东德美精细化工集团股份有限公司	一种抗原纤化组合物及在莱赛尔织物上的应用

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0359039A2 (fr) *	1988-09-13	1990-03-21	BASF Aktiengesellschaft	Procédé d'apprêt infraissable de matériaux textiles
EP0392349A1 (fr) *	1989-04-13	1990-10-17	BASF Aktiengesellschaft	Procédé de préparation de solutions acqueuses de N-méthylolethers
JPH06146168A (ja) *	1992-10-30	1994-05-27	Nisshinbo Ind Inc	溶剤紡糸されたセルロース系繊維のフイブリル化防止加工方法
WO1994020656A1 (fr) *	1993-03-10	1994-09-15	Courtaulds Fibres (Holdings) Limited	Traitement de fibres
EP0621366A1 (fr) *	1993-04-23	1994-10-26	Pfersee Chemie GmbH	Procédé de traitement infroisse de matériaux fibreux contenant de la cellulose
WO1995000697A1 (fr) *	1993-06-24	1995-01-05	Courtaulds Fibres (Holdings) Limited	Traitement pour tissus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4246221A (en) *	1979-03-02	1981-01-20	Akzona Incorporated	Process for shaped cellulose article prepared from a solution containing cellulose dissolved in a tertiary amine N-oxide solvent
GB9022175D0 (en) *	1990-10-12	1990-11-28	Courtaulds Plc	Treatment of fibres
GB9111559D0 (en) *	1991-05-29	1991-07-17	Ici Plc	Polyisocyanate composition
DE4129953A1 (de) *	1991-09-10	1993-03-11	Bayer Ag	Polyisocyanatgemische, ein verfahren zu ihrer herstellung und ihre verwendung
GB9122318D0 (en) *	1991-10-21	1991-12-04	Courtaulds Plc	Treatment of elongate members
DE4142275A1 (de) *	1991-12-20	1993-06-24	Bayer Ag	Isocyanatocarbonsaeuren, ein verfahren zu ihrer herstellung und ihrer verwendung

1994
- 1994-09-06 DE DE4431635A patent/DE4431635A1/de not_active Withdrawn
1995
- 1995-08-22 DE DE59510440T patent/DE59510440D1/de not_active Expired - Fee Related
- 1995-08-22 DE DE59510523T patent/DE59510523D1/de not_active Expired - Fee Related
- 1995-08-22 EP EP95931179A patent/EP0779942B1/fr not_active Expired - Lifetime
- 1995-08-22 AT AT99123392T patent/ATE230447T1/de not_active IP Right Cessation
- 1995-08-22 AT AT95931179T patent/ATE194018T1/de not_active IP Right Cessation
- 1995-08-22 AT AT99123391T patent/ATE226985T1/de not_active IP Right Cessation
- 1995-08-22 DK DK95931179T patent/DK0779942T3/da active
- 1995-08-22 WO PCT/EP1995/003327 patent/WO1996007780A1/fr not_active Ceased
- 1995-08-22 EP EP99123391A patent/EP0985747B1/fr not_active Expired - Lifetime
- 1995-08-22 DE DE59508498T patent/DE59508498D1/de not_active Expired - Fee Related
- 1995-08-22 EP EP99123392A patent/EP0984084B1/fr not_active Expired - Lifetime
- 1995-08-22 ES ES95931179T patent/ES2148552T3/es not_active Expired - Lifetime
- 1995-08-22 ES ES99123392T patent/ES2190169T3/es not_active Expired - Lifetime
- 1995-08-22 US US08/793,607 patent/US5776394A/en not_active Expired - Fee Related
- 1995-08-22 JP JP8509162A patent/JPH10505389A/ja not_active Ceased

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0359039A2 (fr) *	1988-09-13	1990-03-21	BASF Aktiengesellschaft	Procédé d'apprêt infraissable de matériaux textiles
EP0392349A1 (fr) *	1989-04-13	1990-10-17	BASF Aktiengesellschaft	Procédé de préparation de solutions acqueuses de N-méthylolethers
JPH06146168A (ja) *	1992-10-30	1994-05-27	Nisshinbo Ind Inc	溶剤紡糸されたセルロース系繊維のフイブリル化防止加工方法
WO1994020656A1 (fr) *	1993-03-10	1994-09-15	Courtaulds Fibres (Holdings) Limited	Traitement de fibres
EP0621366A1 (fr) *	1993-04-23	1994-10-26	Pfersee Chemie GmbH	Procédé de traitement infroisse de matériaux fibreux contenant de la cellulose
WO1995000697A1 (fr) *	1993-06-24	1995-01-05	Courtaulds Fibres (Holdings) Limited	Traitement pour tissus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 9426, Derwent World Patents Index; Class F01, AN 94-211461, XP002131787 *

Also Published As

Publication number	Publication date
DE59510523D1 (de)	2003-02-06
EP0779942A1 (fr)	1997-06-25
DK0779942T3 (da)	2000-08-28
US5776394A (en)	1998-07-07
ATE194018T1 (de)	2000-07-15
EP0985747B1 (fr)	2002-10-30
ATE230447T1 (de)	2003-01-15
JPH10505389A (ja)	1998-05-26
DE59508498D1 (de)	2000-07-27
WO1996007780A1 (fr)	1996-03-14
ES2148552T3 (es)	2000-10-16
EP0984084B1 (fr)	2003-01-02
DE4431635A1 (de)	1996-03-07
ATE226985T1 (de)	2002-11-15
EP0985747A2 (fr)	2000-03-15
EP0779942B1 (fr)	2000-06-21
ES2190169T3 (es)	2003-07-16
EP0985747A3 (fr)	2000-04-19
DE59510440D1 (de)	2002-12-05
EP0984084A2 (fr)	2000-03-08

Publication	Publication Date	Title
AU6974991A (en)	1991-07-24	Fibers and pulps for papermaking based on chemical combination of poly(acrylate-co-itaconate), polyol and cellulosic fiber
PL311581A1 (en)	1996-02-19	Fibre producing method
AU671627B2 (en)	1996-09-05	Para-aramide dope of low degree of polymerization, para-aramide fiber and para-aramide pulp produced therefrom and processes for producing the same
AU7247287A (en)	1987-11-12	Process for the photochemical stabilization of undyed and dyed polyamide fibre material and blends thereof with other fibres
CA2125291A1 (fr)	1993-06-24	Fibres cellulosiques
ZA941246B (en)	1994-09-19	Fibre
EP0985747A3 (fr)	2000-04-19	Procédé de fabrication de fibres de cellulose
CA2147540A1 (fr)	1995-10-26	Methode de production de filaments de polyurethane
EP0769578A4 (fr)	2000-03-08	Fibre d'acetate de cellulose possedant une section non circulaire, son montage et son procede de preparation
DE69423344D1 (de)	2000-04-13	Inhibierung von wasserstoffperoxid-abbauenden enzymen, z.b. catalase und peroxidase, beim bleichen von cellulosischen fasern
AU538203B2 (en)	1984-08-02	Polyurethane moulding material
FR2705106B1 (fr)	1997-04-18	Procédé pour la production de fibres de rayonne.
AU9752098A (en)	1999-05-17	Method for preparing a regenerated cellulose fibre or yarn
IE871717L (en)	1987-12-27	Individualized cross-linked cellulose fibres
DE58900408D1 (de)	1991-12-05	Verfahren zur behandlung von zellulosefasern sowie faserzementprodukte und mischungen zu ihrer herstellung.
AU1851595A (en)	1995-09-25	Fibrous structure containing urea peroxide and method for its manufacture
AU586107B2 (en)	1989-06-29	Method of manufacturing fiber preform for single-mode fibers
EP0378800A3 (fr)	1991-08-14	Méthode de nettoyage alcalin de matériaux fibreux cellulosiques
KR970043412A (ko)	1997-07-26	활성탄소 섬유의 제조방법
BR9001724A (pt)	1991-05-21	Fibra de poliamida,revestimento e processo para modificacao de fibras de poliamida
TW324758B (en)	1998-01-11	Manufacturing method for cellulose fiber
CA2170147A1 (fr)	1995-03-16	Plateau d'epissure
UA26448C2 (uk)	1999-08-30	Спосіб одержаhhя поліуретаhсечовиh
AU1378695A (en)	1995-07-17	Process for delignifying virgin and post-consumer used ligno-cellulosic plant meterials for the purpose of preparing cellulosic fiber, free sugars and lignin by-products
ITMI931308A1 (it)	1994-12-17	Processo di filatura per la preparazione di fibre poliolefiniche ad elevata termosaldabilita'

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