CA977505A - Process for producing cellulose pulp - Google Patents

Process for producing cellulose pulp

Info

Publication number: CA977505A
Authority: CA; Canada
Prior art keywords: cellulose pulp; producing cellulose; producing; pulp; cellulose
Prior art date: 1969-09-26
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.): Expired

Application number

CA093,735A

Other languages

English (en)

Inventor

Andre Fogarassy

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.)

Generale De Brevets Industriels Et Chimiques Sa Ste

Original Assignee

Generale De Brevets Industriels Et Chimiques Sa Ste

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.)

1969-09-26

Filing date

1970-09-22

Publication date

1975-11-11

1970-09-22 Application filed by Generale De Brevets Industriels Et Chimiques Sa Ste filed Critical Generale De Brevets Industriels Et Chimiques Sa Ste

1975-11-11 Application granted granted Critical

1975-11-11 Publication of CA977505A publication Critical patent/CA977505A/en

Status Expired legal-status Critical Current

Links

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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/20—Pulping cellulose-containing materials with organic solvents or in solvent environment

CA093,735A 1969-09-26 1970-09-22 Process for producing cellulose pulp Expired CA977505A (en)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
CH1452269A CH498244A (fr)	1969-09-26	1969-09-26	Procédé de fabrication de pâte cellulosique
CH1819769A CH512635A (fr)	1969-09-26	1969-12-05	Procédé de fabrication de pâte cellulosique
US7467170A	1970-09-23	1970-09-23
US341508A US3887426A (en)	1969-09-26	1973-03-15	Process for producing cellulose pulp by digestion with a diol or triol solvent and an aniline or phenol salt

Publications (1)

Publication Number	Publication Date
CA977505A true CA977505A (en)	1975-11-11

Family

ID=27429570

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA093,735A Expired CA977505A (en)	1969-09-26	1970-09-22	Process for producing cellulose pulp

Country Status (9)

Country	Link
US (1)	US3887426A (de)
AT (1)	AT300544B (de)
BE (1)	BE756225A (de)
CA (1)	CA977505A (de)
CH (2)	CH498244A (de)
DE (1)	DE2046944A1 (de)
FR (1)	FR2063171B1 (de)
GB (1)	GB1328674A (de)
LU (1)	LU61717A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4135967A (en) *	1969-09-26	1979-01-23	Societe Generale De Brevets Industriels Et Ohimiques	Process for producing cellulose pulp by solid phase digestion
US4017642A (en) *	1975-07-28	1977-04-12	George O. Orth	Process of making food for ruminant animals from wood and/or woody products
CA1079008A (en) *	1975-10-24	1980-06-10	Cp Associates Limited	Solvent pulping process
US4594130A (en) *	1978-11-27	1986-06-10	Chang Pei Ching	Pulping of lignocellulose with aqueous alcohol and alkaline earth metal salt catalyst
US4329200A (en) *	1980-06-02	1982-05-11	Board Of Reagents, University Of Washington	Method and system for selective alkaline defiberization and delignification
EP0472820B1 (de) *	1990-08-17	1997-10-29	Alcell Technologies Inc.	Verfahren zum Lösungsmittel-Stetigaufschluss
JP7104507B2 (ja) *	2017-11-08	2022-07-21	アースリサイクル株式会社	セルロースの分離方法
US20210230375A1 (en) *	2018-11-07	2021-07-29	Earthrecycle Co., Ltd.	Method for separating cellulose
CN118745677A (zh) *	2024-07-04	2024-10-08	蚌埠星河秸秆生物科技有限公司	一种碱-高沸点醇法高效去除玉米秸秆中木质素的方法
CN118880644A (zh) *	2024-08-15	2024-11-01	中国科学技术大学	一种生物质仿生溶剂脱除木质素的方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE370781A (de) *	1929-06-07
GB416558A (en) *	1933-03-07	1934-09-07	Henry Dreyfus	Improvements in the manufacture of cellulose from ligno-cellulosic materials
US2772968A (en) *	1951-06-06	1956-12-04	Research Corp	Process of pulping cellulosic materials with triethylene glycol
US2886483A (en) *	1953-05-27	1959-05-12	Rosenblads Patenter Ab	Heating system for cellulose digestion plants
US3305432A (en) *	1963-07-15	1967-02-21	William R Matthews	Making of cellulose pulp
US3255071A (en) *	1963-10-25	1966-06-07	Theodor N Kleinert	Process for production of alkali cellulose in the absence of an aqueous liquid phase
US3428520A (en) *	1965-08-12	1969-02-18	Scott Paper Co	Pulping process with lignin recovery
US3408268A (en) *	1966-10-27	1968-10-29	Jefferson Chem Co Inc	Recovery of spent glycol by distillation in the presence of water

0
- BE BE756225D patent/BE756225A/xx unknown
1969
- 1969-09-26 CH CH1452269A patent/CH498244A/fr not_active IP Right Cessation
- 1969-12-05 CH CH1819769A patent/CH512635A/fr unknown
1970
- 1970-09-17 AT AT840870A patent/AT300544B/de not_active IP Right Cessation
- 1970-09-18 LU LU61717D patent/LU61717A1/xx unknown
- 1970-09-22 CA CA093,735A patent/CA977505A/en not_active Expired
- 1970-09-23 DE DE19702046944 patent/DE2046944A1/de active Pending
- 1970-09-24 FR FR707034610A patent/FR2063171B1/fr not_active Expired
- 1970-09-25 GB GB4588170A patent/GB1328674A/en not_active Expired
1973
- 1973-03-15 US US341508A patent/US3887426A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
CH512635A (fr)	1971-09-15
DE2046944A1 (de)	1971-04-15
CH498244A (fr)	1970-10-31
FR2063171A1 (de)	1971-07-09
FR2063171B1 (de)	1973-01-12
US3887426A (en)	1975-06-03
AT300544B (de)	1972-07-25
GB1328674A (en)	1973-08-30
LU61717A1 (de)	1971-01-18
BE756225A (fr)	1971-03-01

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