The invention discloses a Gemini-like
rosin segmented polyether
sulfonate, a preparation method thereof and application thereof. The preparation method comprises the following steps: sequentially polymerizing a maleic
rosin activated
monomer with epoxypropane and oxirane in
molar ratios to form a segmented
copolymer, taking carbamide as a catalyst, sulfonating the carbamide with an aminosulfonic acid in a
molar ratio of 1:0.8-2, dissolving the
reaction product with a low-molecular weight and low-
viscosity alcohol so as to assist
filtration, removing the low-molecular weight
alcohol, if necessary, replacing a
system ammonium with an alkali to release
ammonia gas, and forming a liquefied compound of the
sulfonate with good
dispersity, emulsibility and stability. The Gemini-like
rosin segmented polyether
sulfonate of the invention can be applied to a
pesticide emulsion in water, a suspension agent in water, a suspension agent in oil, a suspending
emulsion, a suspending seed
coating and other preparations in which the water is used as a continuous phase, and has the advantages of low production cost, practical and feasible process,
environmental protection, no
pollution, good application performance and the like.