NO772420L - Fremgangsmaate ved fremstilling av ublekt sulfitcellulose fra defibrert kvistmasse - Google Patents

Fremgangsmaate ved fremstilling av ublekt sulfitcellulose fra defibrert kvistmasse

Info

Publication number: NO772420L
Authority: NO; Norway
Prior art keywords: unbleaked; cellulosis; twis; defibrated; sulphite
Prior art date: 1977-07-08

Application number

NO772420A

Other languages

English (en)

Other versions

NO140936C (no

NO140936B (no

Inventor

Ketil Hasvold

Original Assignee

Borregaard As

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.)

1977-07-08

Filing date

1977-07-08

Publication date

1979-01-09

1977-07-08 Application filed by Borregaard As filed Critical Borregaard As

1977-07-08 Priority to NO772420A priority Critical patent/NO140936C/no

1978-06-13 Priority to SE7806806A priority patent/SE7806806L/xx

1978-07-04 Priority to CA000306697A priority patent/CA1119361A/en

1978-07-05 Priority to FI782164A priority patent/FI63449C/fi

1979-01-09 Publication of NO772420L publication Critical patent/NO772420L/no

1979-06-28 Priority to US06/052,862 priority patent/US4230524A/en

1979-09-03 Publication of NO140936B publication Critical patent/NO140936B/no

1979-12-12 Publication of NO140936C publication Critical patent/NO140936C/no

Links

LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 title 1

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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials

NO772420A 1977-07-08 1977-07-08 Fremgangsmaate ved fremstilling av sulfittcellulose fra kvistmasse NO140936C (no)

Priority Applications (5)

Application Number	Priority Date	Filing Date	Title
NO772420A NO140936C (no)	1977-07-08	1977-07-08	Fremgangsmaate ved fremstilling av sulfittcellulose fra kvistmasse
SE7806806A SE7806806L (sv)	1977-07-08	1978-06-13	Forfarande for framstellning av oblekt sulfitcellulosa med hog ljushet, renhet och styrka eller blekt cellulosa av kvistmassa
CA000306697A CA1119361A (en)	1977-07-08	1978-07-04	Method for the production of unbleached sulphite cellulose or bleached cellulose from a defibrated knot pulp
FI782164A FI63449C (fi)	1977-07-08	1978-07-05	Foerfarande foer framstaellning av oblekt sulfitcellulosa med hoeg ljushet renhet och styrka eller blekt cellulosa fraon kvistmassa
US06/052,862 US4230524A (en)	1977-07-08	1979-06-28	Method for the production of unbleached sulphite cellulose or bleached cellulose from a defibrated knot pulp

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NO772420A NO140936C (no)	1977-07-08	1977-07-08	Fremgangsmaate ved fremstilling av sulfittcellulose fra kvistmasse

Publications (3)

Publication Number	Publication Date
NO772420L true NO772420L (no)	1979-01-09
NO140936B NO140936B (no)	1979-09-03
NO140936C NO140936C (no)	1979-12-12

Family

ID=19883621

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NO772420A NO140936C (no)	1977-07-08	1977-07-08	Fremgangsmaate ved fremstilling av sulfittcellulose fra kvistmasse

Country Status (5)

Country	Link
US (1)	US4230524A (no)
CA (1)	CA1119361A (no)
FI (1)	FI63449C (no)
NO (1)	NO140936C (no)
SE (1)	SE7806806L (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4435249A (en)	1979-09-05	1984-03-06	The Black Clawson Co.	Process for the oxygen delignification of pulp mill rejects
SE465730C (sv) *	1988-03-17	2001-10-08	Kvaerner Pulping Tech	Sätt vid delignifiering av fiberhaltig cellulosamassa
BRPI0821203A2 (pt) *	2007-12-19	2014-10-07	Fpinnovations	Processo, hidrolisado, e, resíduo de nó botânico

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3393121A (en) *	1965-02-05	1968-07-16	Scott Paper Co	Soda cook of acid sulfite knotter rejects
US3830688A (en) *	1970-10-23	1974-08-20	Skogsaegarnas Ind Ab	Method of reducing the discharge of waste products from pulp mills
US3886035A (en) *	1973-03-12	1975-05-27	Kamyr Inc	Process for separating knots from pulp

1977
- 1977-07-08 NO NO772420A patent/NO140936C/no unknown
1978
- 1978-06-13 SE SE7806806A patent/SE7806806L/xx unknown
- 1978-07-04 CA CA000306697A patent/CA1119361A/en not_active Expired
- 1978-07-05 FI FI782164A patent/FI63449C/fi not_active IP Right Cessation
1979
- 1979-06-28 US US06/052,862 patent/US4230524A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
NO140936C (no)	1979-12-12
FI63449C (fi)	1983-06-10
FI63449B (fi)	1983-02-28
US4230524A (en)	1980-10-28
FI782164A7 (fi)	1979-01-09
SE7806806L (sv)	1979-01-09
CA1119361A (en)	1982-03-09
NO140936B (no)	1979-09-03

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