Alkyl denaturation carboxyl group content water soluble copolymer

摘要

This invention although when electrolyte has not existed low it is viscosity very, makes viscosity increase substantially with the addition of electrolyte although, relatively it is under existing of electrolyte of high density and forming the neutralization consistency liquid which possesses the fresh material feeling where high viscosity it possesses high transmissivity, the be there is no coming which passes it is possible, alkyl denaturation carboxyl group content water soluble copolymer and the thickener which includes that are offered. Compared to as for details, as for this invention, (the meta) acrylic acid 100 weight section and carbon count of the alkyl group are 18 - 24, (the ethylene characteristic unsaturated basis of the meta) acrylic acid alkyl ester 0.5 - 5 weight sections and 0 - 0.1 weight sections 2 or more it possesses, making with the chemical compound polymerize which can being the alkyl denaturation carboxyl group content water soluble copolymer which, 1 weight % viscosity of the neutralization consistency liquid is below 1500mPa s and transmissivity 90% or more, at the same time, when vis-a-vis the particular neutralization consistency liquid 100 weight section, adding the sodium chloride of 0.25 - 5 weight sections, the highest viscosity 15000- It is 40000mPa s and the alkyl denaturation carboxyl group content water soluble copolymer where transmissivity is 90% or more and the thickener which includes that are offered.