Dendritic monomer, hyperbranched polymer, preparation method therefor, use thereof, and drilling fluid treatment agent

Abstract

The present invention relates to the field of petroleum engineering. Disclosed are a dendritic monomer, a hyperbranched polymer, a preparation method therefor, use thereof, and a drilling fluid treatment agent. The dendritic monomer has a structure represented by formula (I): X-Z-My (I). In formula (I), y ≥ 4, X represents a core moiety, X is N-R1-N, and R1 is a C1-C6 alkylene group or a C6-C12 arylene group; Z represents a linking moiety, M represents a terminal group moiety, and both Z and M are chain-like structures; M is grafted onto the outer side of X, and at least a portion of M contains two or more polymerizable unsaturated carbon-carbon double bonds. The polymer synthesized from the dendritic monomer has a higher degree of branching, and exhibits stronger high-temperature resistance and shear resistance. The dendritic monomer enables the preparation of hyperbranched polymers with larger relative molecular masses and higher yields.

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