JPS5657891A - Dispersing agent for aqueous slurry of coal powder - Google Patents

Dispersing agent for aqueous slurry of coal powder

Info

Publication number
JPS5657891A
JPS5657891A JP13389079A JP13389079A JPS5657891A JP S5657891 A JPS5657891 A JP S5657891A JP 13389079 A JP13389079 A JP 13389079A JP 13389079 A JP13389079 A JP 13389079A JP S5657891 A JPS5657891 A JP S5657891A
Authority
JP
Japan
Prior art keywords
dispersing agent
copolymer
aqueous slurry
coal powder
maleic acid
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.)
Granted
Application number
JP13389079A
Other languages
Japanese (ja)
Other versions
JPS6252792B2 (en
Inventor
Masaaki Yamamura
Noboru Moriyama
Shinichi Watanabe
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.)
Kao Corp
Original Assignee
Kao Corp
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 Kao Corp filed Critical Kao Corp
Priority to JP13389079A priority Critical patent/JPS5657891A/en
Publication of JPS5657891A publication Critical patent/JPS5657891A/en
Publication of JPS6252792B2 publication Critical patent/JPS6252792B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To prepare a dispersing agent for the preparation of a coal-water slurry having excellent stability, fluidity and deashing characteristics, by using salt of the copolymer of acrylic acid and maleic acid, etc. as effective components.
CONSTITUTION: 1mol of acrylic acid is copolymerized with 0.05W2mol of maleic acid (anhydride) to obtain a copolymer having a molecular weight of 1,000W50,000 (pref. 2,000W20,000). The copolymer is hydrolyzed (when maleic acid is anhydride) and converted to an alkali metal salt or ammonium salt to obtain the objective dispersing agent. The amount of the agent to be added to a coal-water slurry is 0.1W5wt% (pref. 0.5W1.0wt%).
COPYRIGHT: (C)1981,JPO&Japio
JP13389079A 1979-10-17 1979-10-17 Dispersing agent for aqueous slurry of coal powder Granted JPS5657891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13389079A JPS5657891A (en) 1979-10-17 1979-10-17 Dispersing agent for aqueous slurry of coal powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13389079A JPS5657891A (en) 1979-10-17 1979-10-17 Dispersing agent for aqueous slurry of coal powder

Publications (2)

Publication Number Publication Date
JPS5657891A true JPS5657891A (en) 1981-05-20
JPS6252792B2 JPS6252792B2 (en) 1987-11-06

Family

ID=15115485

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13389079A Granted JPS5657891A (en) 1979-10-17 1979-10-17 Dispersing agent for aqueous slurry of coal powder

Country Status (1)

Country Link
JP (1) JPS5657891A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4441888A (en) * 1982-05-21 1984-04-10 Nalco Chemical Company Coal-water slurry viscosity reduction using olefin/maleic acid salt copolymers
EP0197523A2 (en) * 1985-04-12 1986-10-15 Henkel Kommanditgesellschaft auf Aktien Mixtures of fluidity auxiliaries for the synergistic enhancement of the fluidity of stable aqueous coal suspensions
JPH06315622A (en) * 1993-01-26 1994-11-15 Natl Starch & Chem Investment Holding Corp Multifunctional maleate polymer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524682A (en) * 1962-03-07 1970-08-18 American Cyanamid Co Coal suspension pumping using polyelectrolytes
US4094810A (en) * 1976-06-01 1978-06-13 Kerr-Mcgee Corporation Aqueous slurry of ash concentrate composition and process for producing same
JPS5416511A (en) * 1977-05-31 1979-02-07 Scaniainventor Ab Composite containing crushed refined substances* water and dispersing agent and production of said composite
JPS6252791A (en) * 1985-08-31 1987-03-07 Oki Electric Ind Co Ltd Multiplex circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524682A (en) * 1962-03-07 1970-08-18 American Cyanamid Co Coal suspension pumping using polyelectrolytes
US4094810A (en) * 1976-06-01 1978-06-13 Kerr-Mcgee Corporation Aqueous slurry of ash concentrate composition and process for producing same
JPS5416511A (en) * 1977-05-31 1979-02-07 Scaniainventor Ab Composite containing crushed refined substances* water and dispersing agent and production of said composite
JPS6252791A (en) * 1985-08-31 1987-03-07 Oki Electric Ind Co Ltd Multiplex circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4441888A (en) * 1982-05-21 1984-04-10 Nalco Chemical Company Coal-water slurry viscosity reduction using olefin/maleic acid salt copolymers
EP0197523A2 (en) * 1985-04-12 1986-10-15 Henkel Kommanditgesellschaft auf Aktien Mixtures of fluidity auxiliaries for the synergistic enhancement of the fluidity of stable aqueous coal suspensions
JPH06315622A (en) * 1993-01-26 1994-11-15 Natl Starch & Chem Investment Holding Corp Multifunctional maleate polymer

Also Published As

Publication number Publication date
JPS6252792B2 (en) 1987-11-06

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