Cement dispersant agent and cement compsn. using same

Cement dispersant agent and cement compsn. using same

CN
  • CN 1,343,642 A
  • Filed: 08/10/2001
  • Published: 04/10/2002
  • Est. Priority Date: 08/11/2000
  • Status: Active Application
First Claim
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1. cement dispersants, it is characterized in that containing multipolymer as necessary composition, it is the formation unit (I-1) of monomer (a1) that this multipolymer contains from unsaturated (gathering) alkylene glycol ether with following general expression (1) expression, with be the formation unit (II-1) of monomer (b1) from unsaturated monocarboxylic with following general expression (2) expression, and above-mentioned formation unit (II-1) contains the structure from vinylformic acid (salt) at least.[changing 1] XO (R 1O) nH (1) (X represents the alkenyl of 4 carbon, R in the formula (1) 1O represents the mixture more than a kind or 2 kinds in the oxyalkylene of 2~

  • 18 carbon, and in total oxyalkylene 90 moles be the oxygen ethylidene more than the %, n is the average addition mole number of oxyalkylene, the number of expression 1~

    300) [changing 2] (in the formula (2), R 2, R 3, R 4Independent respectively expression hydrogen or methyl, M represents hydrogen, monovalence metal, divalent metal, ammonium or organic amino group).

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