Agricultural macromolecular surfactant and preparation method and application thereof

A technology of surfactants and polymers, applied in botany equipment and methods, applications, biocides, etc., can solve the problem that the distribution of functional groups cannot be effectively controlled, the molecular weight distribution of products is wide, the distribution of disordered hydrophilic groups and molecular structure, etc. problem, to achieve the effect of improving the suspension rate and stability over time, good emulsification and dispersion stability, and good steric hindrance
CN102308798AInactive Publication Date: 2012-01-11YANGZHOU SPED CHEM
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
YANGZHOU SPED CHEM
Publication Date
2012-01-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an agricultural macromolecular surfactant and a preparation method and application thereof, belonging to the technical field of surfactants. According to the invention, the block-type macromolecular surfactant is prepared by performing solution or emulsion polymerization on hydrophilic monomer and lipophilic monomer in a manner of employing a reversible addition fragmentation chain free radical copolymerization technology under the action of an initiator and a chain transfer agent, wherein the polymerization temperature is 50-150 DEG C and the polymerization pressure is 0.1-10 MPa. The macromolecular surfactant is applied in environment-friendly pesticide preparations. Hydrophilic groups with high charge density are bonded with the two ends of the macromolecular surfactant, and a hydrophobic long carbon chain is bonded with the other end of the macromolecular surfactant. According to the invention, the molecular weight and the molecular chain segment sequence structure of the macromolecular compound are intelligently controlled, and the molecular weight distribution is narrow. When being used in a pesticide preparation, the surfactant disclosed by the invention has the advantages of small dosage and good emulsion dispersion stability.
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Description

technical field

[0001] The invention discloses a method for preparing a BOLA type polymer surfactant with a block-type structure and a controllable molecular weight and its distribution by adopting a reversible addition-fragmentation chain transfer active radical copolymerization technology, and the surfactant is used in pesticides. The application in environment-friendly preparations such as water-dispersible granules, pesticide wettable powders, and suspending agents belongs to the technical field of surfactants. Background technique

[0002] Pesticide water dispersible granules (WDG) or wettable powders (WP) are the original drug, dispersant, wetting agent and filler under the action of high-speed airflow, which are instantly mixed to realize the depolymerization of the original drug particles and the coating of the dispersant on the particles. surface; in the storage process, due to the electrostatic repulsion force, van der Waals force, intermolecular dispersion force a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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