Title:
【発明の名称】石炭―水スラリー用添加剤
Document Type and Number:
Japanese Patent JP2747522
Kind Code:
B2
Abstract:
PURPOSE:To provide the subject additive containing a partially esterified product of a specific styrene/maleic acid copolymer, capable of stably dispersing coal powder in water at high concentration to form a dispersion having high fluidity and effective for suppressing the abrasion of especially a transportation pipe and a burner tip. CONSTITUTION:The objective additive contains a partially esterified product of a styrene/maleic acid copolymer produced by reacting (A) a styrene/maleic anhydride copolymer expressed by formula I ((l) is integer of 1-5; (m) is integer of 1-3; (n) is integer of 4-10), (B) a polyether derivative having a polyalkylene glycol chain and expressed by formula II (X is residue of a 1-4C compound having one active hydrogen atom; R is 3-8C alkylene oxide; (p) is integer of 0-10; (q) is integer of 10-200) and (C) a >=6C primary amine at molar ratios (A:B:C) of 1:(1-10):(1-3).
Inventors:
MIZUNO YASUNOBU
UTO HARUICHI
UTO HARUICHI
Application Number:
JP22302390A
Publication Date:
May 06, 1998
Filing Date:
August 23, 1990
Export Citation:
Assignee:
NEOSU KK
International Classes:
C08F212/00; C08F212/08; C08F220/04; C08F222/08; C09K23/42; C09K23/52; C09K23/16; C10L1/32; C10L10/08; (IPC1-7): C10L1/32; B01F17/16; B01F17/42; B01F17/52; C08F212/08; C08F222/08
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)