FI881544L - Method for preparing mechanical pulp - Google Patents

Method for preparing mechanical pulp Download PDF

Info

Publication number: FI881544L
Authority: FI; Finland
Prior art keywords: mechanical pulp; preparing mechanical; preparing; pulp; mechanical
Prior art date: 1987-04-02

Application number

FI881544A

Other languages

Finnish (fi)

Swedish (sv)

Other versions

FI881544A0 (en

FI93749C (en

FI93749B (en

Inventor

Michel Devic

Jacques Kervennal

Jean-Pierre Schirmann

Original Assignee

Atochem

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.)

1987-04-02

Filing date

1988-03-31

Publication date

1988-10-03

1988-03-31 Application filed by Atochem filed Critical Atochem

1988-03-31 Publication of FI881544A0 publication Critical patent/FI881544A0/en

1988-10-03 Publication of FI881544L publication Critical patent/FI881544L/en

1995-02-15 Application granted granted Critical

1995-02-15 Publication of FI93749B publication Critical patent/FI93749B/en

1995-05-26 Publication of FI93749C publication Critical patent/FI93749C/en

Classifications

- 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Detergent Compositions (AREA)
Dental Preparations (AREA)
Treatment Of Fiber Materials (AREA)
Noodles (AREA)
Seasonings (AREA)
Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Glass Compositions (AREA)

FI881544A 1987-04-02 1988-03-31 Process for bleaching mechanical pulp FI93749C (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR8704844A FR2613388B1 (en)	1987-04-02	1987-04-02	PROCESS FOR BLEACHING PASTA
FR8704844		1987-04-02

Publications (4)

Publication Number	Publication Date
FI881544A0 FI881544A0 (en)	1988-03-31
FI881544L true FI881544L (en)	1988-10-03
FI93749B FI93749B (en)	1995-02-15
FI93749C FI93749C (en)	1995-05-26

Family

ID=9349862

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI881544A FI93749C (en)	1987-04-02	1988-03-31	Process for bleaching mechanical pulp

Country Status (11)

Country	Link
EP (1)	EP0285530B1 (en)
JP (1)	JPS63256786A (en)
AT (1)	ATE84581T1 (en)
AU (1)	AU606930B2 (en)
CA (1)	CA1310797C (en)
DE (2)	DE3877403T2 (en)
ES (1)	ES2004846T3 (en)
FI (1)	FI93749C (en)
FR (1)	FR2613388B1 (en)
NO (1)	NO173886C (en)
NZ (1)	NZ224144A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2647641B1 (en) *	1989-06-05	1992-01-17	Atochem	PROCESS FOR THE MANUFACTURE OF BLEACHED VEGETABLE PULPES
DE69004492T3 (en) *	1989-06-06	2001-11-15	Eka Nobel Ab, Bohus	Process for bleaching pulps containing lignocellulose.
SE467006B (en)	1989-06-06	1992-05-11	Eka Nobel Ab	Bleaching chemical pulp with peroxide, with the pulp first being treated with a sequestering agent
FR2659363B1 (en) *	1990-03-07	1996-04-19	Atochem	PROCESS FOR THE PREPARATION OF HIGHLY YIELDED PASTA.
SE9001481L (en) *	1990-04-23	1991-10-24	Eka Nobel Ab	REDUCTION OF HALOGEN ORGANIC SUBSTANCES IN BLEACHING WASTE
SE466061B (en) *	1990-04-23	1991-12-09	Eka Nobel Ab	Bleaching of chemical pulp by treatment with first a complexing agent and then a peroxide containing substance
FR2661430B1 (en) *	1990-04-30	1992-07-17	Atochem	HIGH-YIELD PAPER PULP HYDROGEN PEROXIDE BLEACHING PROCESS.
FR2661431B1 (en) *	1990-04-30	1992-07-17	Atochem	HIGH-YIELD PAPER PULP HYDROGEN PEROXIDE BLEACHING PROCESS.
SE468355B (en) *	1991-04-30	1992-12-21	Eka Nobel Ab	CHEMISTRY OF CHEMICAL MASS THROUGH TREATMENT WITH COMPLEX PICTURES AND OZONE
ZA955290B (en) *	1994-07-11	1996-12-27	Ingersoll Rand Co	Peroxide bleaching process for cellulosic and lignocellulosic material
BR0318520A (en) *	2003-10-02	2006-09-12	Andritz Inc	multistage mechanical pulping ap with refiner blowing line treatment
US8298373B2 (en)	2008-02-07	2012-10-30	University Of New Brunswick	Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL202075A (en) *	1954-11-19		Fmc Corp
US3251731A (en) *	1963-02-11	1966-05-17	Andrew J Gard	Bleaching of wood pulp with a sequestering agent and hydrogen peroxide
JPS5344563A (en) *	1976-10-05	1978-04-21	Ouchi Shinkou Kagaku Kougiyou	Preparation of benzothiazolylsulfenamide
FI61215B (en) *	1976-11-23	1982-02-26	Defibrator Ab	SAFETY RANGE OF CONTAINER FRAMSTAELLA LIGNOCELLULOSAHALTIGA FIBERMATERIAL

1987
- 1987-04-02 FR FR8704844A patent/FR2613388B1/en not_active Expired - Lifetime
1988
- 1988-03-29 DE DE8888420102T patent/DE3877403T2/en not_active Expired - Fee Related
- 1988-03-29 DE DE198888420102T patent/DE285530T1/en active Pending
- 1988-03-29 NO NO881404A patent/NO173886C/en unknown
- 1988-03-29 AT AT88420102T patent/ATE84581T1/en active
- 1988-03-29 EP EP88420102A patent/EP0285530B1/en not_active Expired - Lifetime
- 1988-03-29 ES ES198888420102T patent/ES2004846T3/en not_active Expired - Lifetime
- 1988-03-31 CA CA000563118A patent/CA1310797C/en not_active Expired - Lifetime
- 1988-03-31 FI FI881544A patent/FI93749C/en not_active IP Right Cessation
- 1988-03-31 AU AU14067/88A patent/AU606930B2/en not_active Ceased
- 1988-04-02 JP JP63082116A patent/JPS63256786A/en active Granted
- 1988-04-06 NZ NZ224144A patent/NZ224144A/en unknown

Also Published As

Publication number	Publication date
DE3877403T2 (en)	1993-05-19
FI881544A0 (en)	1988-03-31
NO881404D0 (en)	1988-03-29
NO881404L (en)	1988-10-03
FI93749C (en)	1995-05-26
NO173886C (en)	1994-02-16
NO173886B (en)	1993-11-08
NZ224144A (en)	1989-07-27
JPS63256786A (en)	1988-10-24
EP0285530B1 (en)	1993-01-13
DE3877403D1 (en)	1993-02-25
ES2004846A4 (en)	1989-02-16
CA1310797C (en)	1992-12-01
ATE84581T1 (en)	1993-01-15
FR2613388B1 (en)	1990-05-04
AU1406788A (en)	1988-10-06
ES2004846T3 (en)	1993-06-16
DE285530T1 (en)	1989-03-30
FR2613388A1 (en)	1988-10-07
FI93749B (en)	1995-02-15
JPH0156197B2 (en)	1989-11-29
EP0285530A1 (en)	1988-10-05
AU606930B2 (en)	1991-02-21

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Legal Events

Date	Code	Title	Description
1994-10-04	HC	Name/ company changed in application	Owner name: ELF ATOCHEM S.A.
1995-01-16	BB	Publication of examined application
2004-08-31	MM	Patent lapsed	Owner name: ELF ATOCHEM S.A.