Graft Silicone Crosslinking for Ester Oil Compatibility
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Solution Overview
Problem
Existing organopolysiloxane polymerized products have difficulty swelling with ester oil due to hydrophobicity and insufficient affinity, leading to turbidity and incomplete swelling issues.
Innovation Solution
A polymer crosslinking agent with (meth)acrylic-based graft silicone structure, containing (meth)acrylic-based repeating units and unsaturated bonds, is used in addition polymerization with organohydrogen polysiloxane to create a high molecular weight polymer with enhanced affinity for ester oil, allowing for stable and transparent compositions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If organopolysiloxane polymerized product is used as base material, then storage stability is improved, but affinity for ester oil is insufficient causing turbidity
Solution Approach 1:
The patent applies composite materials by combining organopolysiloxane polymerized product with specific ester oils having controlled molecular structures. The invention uses ester oils where the alcohol portion has 2-10 carbon atoms and the aliphatic acid portion has 10-22 carbon atoms, creating a composite system that maintains both storage stability and improved affinity, eliminating turbidity while preserving the stabilizing properties of the polymerized product.
2Ease of operation
If conventional polymerized product is swollen with ester oil, then paste state is achieved, but incomplete swelling occurs due to hydrophobicity
Solution Approach 1:
The patent applies parameter changes by precisely controlling the molecular structure parameters of the ester oil used for swelling. By specifying that the alcohol portion has 2-10 carbon atoms and the aliphatic acid portion has 10-22 carbon atoms, the invention optimizes the swelling capacity to achieve complete swelling with enhanced affinity, transforming the paste state formation process from incomplete to thorough while maintaining operational ease.
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 resulting high molecular weight polymer demonstrates improved affinity and stability with ester oil, enabling compositions that are transparent and can swell with the same mass or more of liquid oil, addressing the issues of turbidity and incomplete swelling.
Implementation Method 1
it has been disclosed in Patent Document 1 that a specific organopolysiloxane polymerized product obtained by subjecting an organohydrogen polysiloxane and an organopolysiloxane having at least two aliphatic unsaturated bonding groups to addition polymerization
Data Source
AI summary
This is to provide a polymer crosslinking agent which is capable of improving affinity for ester oil.The polymer crosslinking agent is a (meth)acrylic-based graft silicone which comprises (meth)acryl-based repeating units represented by the following formulae (I), (II) and (III) as a main chain, and an unsaturated bond(s) and an organopolysiloxane structure at the side chain. Also, the high molecular weight polymer is an addition polymerization product of the polymer crosslinking agent and an organohydrogen polymer, and a composition is a material in which the high molecular weight polymer is swollen by a liquid oil agent.