Urethane-Bond Antifoaming Polymers for Low-Viscosity Lubricants
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Solution Overview
Problem
Lubricating oils with low viscosity, required for higher performance and fuel efficiency, do not exhibit satisfactory defoaming properties with conventional polysiloxane-based defoaming agents.
Innovation Solution
A defoaming agent comprising a polymer with a polymerization component that includes a polymerizable monomer with a urethane bond and a fluorine-containing functional group and/or a silicone chain-containing functional group, enhancing defoaming properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional polysiloxane-based defoaming agents are used in low viscosity lubricating oil, then the lubricating oil achieves higher performance and fuel efficiency, but the defoaming property becomes unsatisfactory
Solution Approach 1:
The patent changes the chemical structure parameters of the defoaming agent by incorporating polymerizable monomers with specific functional groups (urethane bonds, fluorine-containing groups, silicone chain-containing groups) to create a polymer that maintains effectiveness in low viscosity lubricating oils, resolving the contradiction between fuel efficiency and defoaming property
Solution Approach 2:
The patent uses composite material principles by combining multiple functional groups within the polymer structure (urethane bonds, fluorine-containing functional groups, silicone chain-containing functional groups) to create a defoaming agent that achieves both low viscosity compatibility and effective foam suppression
Data Source
AI summary
Provided is a defoaming agent showing an excellent defoaming property. Specifically, the defoaming agent includes a polymer containing as a polymerization component a polymerizable monomer (1) having a urethane bond and a fluorine-containing functional group and/or a silicone chain-containing functional group.