Multistage Acrylate-Carbosiloxane Polymer for Phase-Stable Formulations
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Solution Overview
Problem
Existing silicone-containing polymers face compatibility issues with other ingredients in coating, personal care, and home care formulations, leading to phase separation during storage.
Innovation Solution
A multistage polymer comprising an acrylate rich stage and a carbosiloxane rich stage, with specific weight percentages and monomer compositions, to enhance compatibility and formulational design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silicone containing polymers are used in formulations, then desirable properties such as water and oil repellency, stain resistance, and lubricity are improved, but compatibility with other ingredients deteriorates leading to phase separation
Solution Approach 1:
The polymer is divided into two distinct stages: an acrylate rich stage and a carbosiloxane rich stage. This segmentation allows each stage to contribute different properties - the acrylate stage provides compatibility with polar ingredients while the carbosiloxane stage provides water and oil repellency and lubricity, thus resolving the contradiction between performance and compatibility
Solution Approach 2:
The invention creates a composite polymer structure combining acrylate units and carbosiloxane units in a single polymer chain. This composite structure integrates the polar characteristics of acrylate (for compatibility) with the non-polar characteristics of carbosiloxane (for repellency and lubricity), enabling the polymer to simultaneously achieve both compatibility and desirable performance properties
2Stability of the object's composition
If auxiliary additives are employed to compatibilize silicone containing polymer, then compatibility is improved, but device complexity and formulation complexity increase
Solution Approach 1:
The invention extracts the compatibility function from separate auxiliary additives and integrates it directly into the polymer structure itself through the acrylate rich stage. This eliminates the need for additional compatibilizer additives, reducing formulation complexity while maintaining compatibility
Solution Approach 2:
The multistage polymer performs multiple functions simultaneously: the acrylate rich stage provides compatibility with polar ingredients, while the carbosiloxane rich stage provides water repellency, oil repellency, and lubricity. This multi-functionality replaces what would otherwise require multiple separate additives, simplifying the overall formulation
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 multistage polymer improves compatibility with other formulation components, preventing phase separation and allowing for tailored desirable properties in personal care, home care, and coating applications.
Implementation Method 1
The multistage polymer improves compatibility with other formulation components, preventing phase separation
Data Source
AI summary
A multistage polymer is provided, having: acrylate rich stage comprising: (a) structural units of monomer selected from C1-22 alkyl (meth)acrylates and structural units of first carbosiloxane monomer of formula (I); and (b) carbosiloxane rich stage, comprising: structural units of second carbosiloxane monomer of formula (I); wherein a is 0 to 3; wherein d is 0 or 1; wherein R1 is selected from hydrogen, C1-10 alkyl group and aryl group; wherein R2 is selected from hydrogen and C1-10 alkyl group; wherein R8 is —O—Si(CH3)3 group; wherein Y is selected from formula (II), (III) and (IV); wherein R4 and R6 are selected from hydrogen and methyl group; wherein R3 and R5 are a C1-10 alkylene group; wherein R7 is C1-10 alkyl group; wherein b is 0 to 4 and wherein c is 0 or 1; and wherein the first and second carbosiloxane monomer of formula (I) are same or different.