FI88814C - Foerfarande foer bekaempning av harts - Google Patents
Foerfarande foer bekaempning av harts Download PDFInfo
- Publication number
- FI88814C FI88814C FI870072A FI870072A FI88814C FI 88814 C FI88814 C FI 88814C FI 870072 A FI870072 A FI 870072A FI 870072 A FI870072 A FI 870072A FI 88814 C FI88814 C FI 88814C
- Authority
- FI
- Finland
- Prior art keywords
- polymer
- process according
- component
- pulp
- paper
- Prior art date
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
- 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
- D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
- D21C9/086—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching with organic compounds or compositions comprising organic compounds
-
- 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
- D21H21/02—Agents for preventing deposition on the paper mill equipment, e.g. pitch or slime control
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Medicines Containing Plant Substances (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Liquid Crystal Substances (AREA)
- Valve Device For Special Equipments (AREA)
- Epoxy Resins (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Farming Of Fish And Shellfish (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8600506 | 1986-01-09 | ||
GB8600506A GB2186895B (en) | 1986-01-09 | 1986-01-09 | Pitch control aid |
Publications (4)
Publication Number | Publication Date |
---|---|
FI870072A0 FI870072A0 (fi) | 1987-01-08 |
FI870072A FI870072A (fi) | 1987-07-10 |
FI88814B FI88814B (fi) | 1993-03-31 |
FI88814C true FI88814C (fi) | 1993-07-12 |
Family
ID=10591145
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI870072A FI88814C (fi) | 1986-01-09 | 1987-01-08 | Foerfarande foer bekaempning av harts |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0232015B1 (fr) |
JP (1) | JPH07113200B2 (fr) |
AT (1) | ATE59068T1 (fr) |
CA (1) | CA1306570C (fr) |
DE (1) | DE3766623D1 (fr) |
ES (1) | ES2019376B3 (fr) |
FI (1) | FI88814C (fr) |
GB (1) | GB2186895B (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE467667B (sv) * | 1988-08-11 | 1992-08-24 | Grace W R & Co | Foerfarande foer reglering av produktionsstoerande mikrobiologiska avsaettningar paa papperstillverkningsutrustning |
JP2618496B2 (ja) * | 1988-09-16 | 1997-06-11 | グレイス・ディアーボーソ・インコーポレーテッド | 製紙機フエルト等への析出防止法 |
US4995944A (en) * | 1988-09-16 | 1991-02-26 | Dearborn Chemical Company Ltd. | Controlling deposits on paper machine felts using cationic polymer and cationic surfactant mixture |
US4997523A (en) * | 1990-06-20 | 1991-03-05 | Betz Panerchem, Inc. | Method for effectively breaking up latex-coated paper during pulping to decrease the potential for white pitch deposition |
GB2251868B (en) * | 1990-12-24 | 1994-07-27 | Grace W R & Co | Pitch control |
TW202043331A (zh) * | 2018-11-30 | 2020-12-01 | 美商Bl科技公司 | 焦化加熱器之積垢減量 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3248353A (en) * | 1963-05-17 | 1966-04-26 | American Cyanamid Co | Alkylene polyamine resin |
USRE28808E (en) * | 1972-02-04 | 1976-05-11 | American Cyanamid Company | Polyquaternary flocculants |
US3855299A (en) * | 1973-06-11 | 1974-12-17 | Grace W R & Co | Water soluble reaction product of epihalohydrin and alkylamines |
US4093605A (en) * | 1975-01-24 | 1978-06-06 | Wolff Walsrode Aktiengesellschaft | Auxiliary agent for improving retention, drainage and treatment |
US4250269A (en) * | 1979-11-26 | 1981-02-10 | Buckman Laboratories, Inc. | Water-soluble mixtures of quaternary ammonium polymers, nonionic and/or cationic vinyl-addition polymers, and nonionic and/or cationic surfactants |
CA1150914A (fr) * | 1980-11-28 | 1983-08-02 | Margaret J. Molnar | Polymeres amine-epichlorhydrine servant a controler le pitch |
-
1986
- 1986-01-09 GB GB8600506A patent/GB2186895B/en not_active Expired
-
1987
- 1987-01-08 CA CA000526936A patent/CA1306570C/fr not_active Expired - Lifetime
- 1987-01-08 FI FI870072A patent/FI88814C/fi not_active IP Right Cessation
- 1987-01-09 ES ES87300212T patent/ES2019376B3/es not_active Expired - Lifetime
- 1987-01-09 JP JP62001956A patent/JPH07113200B2/ja not_active Expired - Lifetime
- 1987-01-09 DE DE8787300212T patent/DE3766623D1/de not_active Expired - Lifetime
- 1987-01-09 EP EP87300212A patent/EP0232015B1/fr not_active Expired - Lifetime
- 1987-01-09 AT AT87300212T patent/ATE59068T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ES2019376B3 (es) | 1991-06-16 |
ATE59068T1 (de) | 1990-12-15 |
FI88814B (fi) | 1993-03-31 |
JPS62223394A (ja) | 1987-10-01 |
EP0232015B1 (fr) | 1990-12-12 |
GB2186895A (en) | 1987-08-26 |
FI870072A (fi) | 1987-07-10 |
JPH07113200B2 (ja) | 1995-12-06 |
DE3766623D1 (de) | 1991-01-24 |
FI870072A0 (fi) | 1987-01-08 |
CA1306570C (fr) | 1992-08-18 |
GB8600506D0 (en) | 1986-02-12 |
GB2186895B (en) | 1989-11-01 |
EP0232015A1 (fr) | 1987-08-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB | Publication of examined application | ||
PC | Transfer of assignment of patent |
Owner name: BETZDEARBORN INC. |
|
FG | Patent granted |
Owner name: BETZDEARBORN, INC. |
|
MA | Patent expired |