ES2019376B3 - Sistema regulador de la pez. - Google Patents

Sistema regulador de la pez.

Info

Publication number
ES2019376B3
ES2019376B3 ES87300212T ES87300212T ES2019376B3 ES 2019376 B3 ES2019376 B3 ES 2019376B3 ES 87300212 T ES87300212 T ES 87300212T ES 87300212 T ES87300212 T ES 87300212T ES 2019376 B3 ES2019376 B3 ES 2019376B3
Authority
ES
Spain
Prior art keywords
epihalohydrin
fish
regulatory system
diepoxide
functionality
Prior art date
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 - Lifetime
Application number
ES87300212T
Other languages
English (en)
Spanish (es)
Inventor
Thord Gustav Gunnar Hassler
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.)
WR Grace AB
Original Assignee
WR Grace AB
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.)
Filing date
Publication date
Application filed by WR Grace AB filed Critical WR Grace AB
Application granted granted Critical
Publication of ES2019376B3 publication Critical patent/ES2019376B3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Liquid Crystal Substances (AREA)
  • Valve Device For Special Equipments (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Epoxy Resins (AREA)
ES87300212T 1986-01-09 1987-01-09 Sistema regulador de la pez. Expired - Lifetime ES2019376B3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8600506A GB2186895B (en) 1986-01-09 1986-01-09 Pitch control aid

Publications (1)

Publication Number Publication Date
ES2019376B3 true ES2019376B3 (es) 1991-06-16

Family

ID=10591145

Family Applications (1)

Application Number Title Priority Date Filing Date
ES87300212T Expired - Lifetime ES2019376B3 (es) 1986-01-09 1987-01-09 Sistema regulador de la pez.

Country Status (8)

Country Link
EP (1) EP0232015B1 (de)
JP (1) JPH07113200B2 (de)
AT (1) ATE59068T1 (de)
CA (1) CA1306570C (de)
DE (1) DE3766623D1 (de)
ES (1) ES2019376B3 (de)
FI (1) FI88814C (de)
GB (1) GB2186895B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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 (en) * 1980-11-28 1983-08-02 Margaret J. Molnar Amine-epichlorohydrin polymers for pitch control

Also Published As

Publication number Publication date
FI88814B (fi) 1993-03-31
CA1306570C (en) 1992-08-18
JPH07113200B2 (ja) 1995-12-06
FI88814C (fi) 1993-07-12
GB2186895B (en) 1989-11-01
ATE59068T1 (de) 1990-12-15
JPS62223394A (ja) 1987-10-01
DE3766623D1 (de) 1991-01-24
FI870072L (fi) 1987-07-10
GB8600506D0 (en) 1986-02-12
EP0232015A1 (de) 1987-08-12
GB2186895A (en) 1987-08-26
FI870072A0 (fi) 1987-01-08
EP0232015B1 (de) 1990-12-12

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