Silicone Polyether Foam Control Agent via Block Copolymer
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Solution Overview
Problem
Existing foam control formulations rely heavily on inorganic fillers, cyclic siloxanes, and siloxane resins, which are costly, complex, and pose environmental concerns, leading to reduced foam control performance when these components are minimized or removed.
Innovation Solution
A linear polyorganosiloxane-polyoxyalkylene block copolymer is used as a foam control agent, eliminating the need for traditional inorganic fillers and cyclic siloxanes, and optionally siloxane resins, with a specific molecular structure and synthesis method via hydrosilylation reaction, providing effective foam control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional inorganic fillers, cyclic siloxanes, and siloxane resins are used in foam control formulations, then foam control performance is maintained, but environmental harm increases and cost increases
Solution Approach 1:
The invention changes the chemical composition parameters by using a linear polyorganosiloxane-polyether block copolymer with specific degree of polymerization ranges (polyorganosiloxane block DP: 10-200, polyoxyalkylene block DP: 2-60) to replace traditional foam control agents, achieving effective foam control without harmful inorganic fillers and cyclic siloxanes
Solution Approach 2:
The invention employs a composite block copolymer structure combining polyorganosiloxane and polyoxyalkylene blocks, where the specific combination and ratio of these polymer blocks provides superior foam control performance without requiring additional inorganic fillers or harmful additives
2Reliability
If traditional inorganic fillers, cyclic siloxanes, and siloxane resins are used in foam control formulations, then foam control performance is maintained, but formulation complexity increases
Solution Approach 1:
The invention extracts and eliminates unnecessary components (inorganic fillers, cyclic siloxanes, siloxane resins) from the foam control formulation, achieving effective foam control with a simplified system containing only the essential block copolymer
Solution Approach 2:
The linear polyorganosiloxane-polyether block copolymer performs multiple functions simultaneously: it acts as the foam control agent, provides formulation stability, and eliminates the need for separate inorganic filler and emulsifier components
3Reliability
If traditional inorganic fillers, cyclic siloxanes, and siloxane resins are used in foam control formulations, then foam control performance is maintained, but cost increases
Solution Approach 1:
The invention replaces expensive traditional foam control agents (inorganic fillers, siloxane resins) with a cost-effective block copolymer that can be synthesized from readily available materials, reducing overall formulation cost while maintaining performance
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 block copolymer effectively controls foam without inorganic fillers and cyclic siloxanes, maintaining performance even when these components are minimized or excluded, thus reducing costs and environmental impact.
Implementation Method 1
A foam control agent comprising a linear polyorganosiloxane-polyoxyalkylene block copolymer
Data Source
AI summary
A foam control agent comprising a linear polyorganosiloxane-polyoxyalkylene block copolymer comprising a single block of polyorganosiloxane having a DP of from 10 to 200 and a single block polyoxyalkylene block having a DP of from 2 to 60.