Solid Adjuvant Defoamer Using Polyalkylene Glycol Adsorption
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Solution Overview
Problem
Existing defoamers for agrochemical concentrates, such as organosilicone agents and perfluoroalkyl defoaming agents, are costly, less effective as solid adjuvants, and tend to lose efficacy in solid formulations, while PO and EO/PO copolymers are not as effective in inhibiting foam formation during dilution.
Innovation Solution
A defoamer adjuvant comprising a solid particulate carrier with polyalkylene glycol polymers containing 1,2-butylene oxide and propylene oxide adsorbed onto it, which enhances defoaming efficacy when used as a solid adjuvant, providing a synergistic effect that surpasses the performance of individual components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If organosilicone agents are used as defoamers, then defoaming efficacy is improved, but cost increases and decomposition occurs under solid formulation conditions
Solution Approach 1:
The patent replaces expensive organosilicone defoamers with a cost-effective polyalkylene glycol composition containing 1,2-butylene oxide and propylene oxide. This cheaper alternative achieves comparable or superior defoaming performance without decomposing under solid formulation conditions, thereby resolving the contradiction between defoaming efficacy and manufacturing cost.
2Reliability
If organosilicone agents are used as defoamers, then defoaming efficacy is improved, but decomposition occurs under solid formulation conditions
Solution Approach 1:
The patent identifies polyalkylene glycol containing 1,2-butylene oxide and propylene oxide as a stable alternative to organosilicone agents. This composition maintains defoaming efficacy while resisting decomposition under solid formulation conditions, thus resolving the contradiction between reliability and compositional stability.
3Reliability
If perfluoroalkyl defoaming agents are used, then liquid formulation defoaming is improved, but solid adjuvant efficacy deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters by selecting polyalkylene glycol containing 1,2-butylene oxide and propylene oxide with specific molecular weight ranges (300-3000 g/mol) and molar ratios. This compositional adjustment enables the defoamer to perform effectively in both liquid formulations and solid adjuvant forms, resolving the contradiction between liquid formulation performance and solid adjuvant adaptability.
4Reliability
If PO and EO/PO copolymers are used as defoamers, then some defoaming success is achieved, but solid adjuvant efficacy is insufficient
Solution Approach 1:
The patent optimizes the polymer composition by incorporating 1,2-butylene oxide and propylene oxide in specific proportions with controlled molecular weight (300-3000 g/mol). This parameter optimization enhances the polymer's ability to function as a solid adjuvant while maintaining defoaming performance, resolving the contradiction between defoaming reliability and solid adjuvant versatility.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The adjuvant significantly reduces foam formation in agrochemical formulations, offering greater defoaming efficacy than traditional defoamers when adsorbed onto a solid carrier, ensuring effective foam inhibition during dilution and improving the stability of agrochemical concentrates.
Implementation Method 1
a polyalkylene glycol adsorbed onto the solid particulate carrier
Data Source
AI summary
A defoaming adjuvant comprises a solid particulate carrier and a polyalkylene glycol adsorbed on to the solid particulate carrier, where the polyalkylene glycol is a reaction product of an alkyl alcohol initiator with 1, 2-butylene oxide and, optionally, propylene oxide.