Alkyl Silicone Polyester Resins for Fibrous Deposition
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Solution Overview
Problem
Existing silicone polyester technologies lack the ability to efficiently deposit on fibrous materials from aqueous systems due to insufficient understanding of alkyl group impact on solubility and lubrication properties.
Innovation Solution
Development of novel silicone polyesters through the crosslinking of alkyl dimethicone copolyol with dimer acid, creating compounds with unique solubility and deposition properties by forming laminar sheets rather than micelles, allowing for improved oil compatibility and efficient deposition on skin, hair, and textile fibers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional silicone polyesters are used, then they can be formulated into aqueous systems, but they cannot efficiently deposit on fibrous materials
Solution Approach 1:
The patent modifies the molecular structure parameters of silicone polyesters by incorporating specific alkyl groups (C8-C22) at defined positions in the molecule. This structural parameter change enables the compound to form laminar sheets on fibrous surfaces while maintaining water dispersibility, thereby achieving efficient deposition from aqueous systems without requiring organic solvents or complex formulations.
2Reliability
If alkyl groups are added to improve solubility and deposition, then deposition efficiency improves, but molecular complexity increases
Solution Approach 1:
The patent introduces alkyl groups at specific local positions (R1, R2, R3, R4) in the silicone polyester molecule rather than uniformly throughout the structure. This localized modification allows the molecule to maintain its fundamental polyester backbone simplicity while gaining enhanced solubility and deposition properties at specific sites, thereby improving deposition efficiency without proportionally increasing overall molecular complexity.
3Reliability
If crosslinking is increased to improve conditioning properties, then lubrication and conditioning improve, but water dispersibility decreases
Solution Approach 1:
The patent employs controlled crosslinking where the silicone polyester contains a specific ratio of crosslinked structures to uncrosslinked segments. This partial crosslinking approach provides sufficient lubrication and conditioning properties through the crosslinked regions while maintaining water dispersibility through the uncrosslinked portions, achieving a balance between conditioning effectiveness and ease of formulation from aqueous systems.
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 compounds are highly effective conditioners and emollients, capable of optimal deposition from dilute aqueous solutions, even at low concentrations, forming lubricious structures that enhance the conditioning of hair, skin, and fibers.
Implementation Method 1
prepared by crosslinking an alkyl dimethicone copolyol having only two hydroxyl groups with a dimer acid
Implementation Method 2
forming laminar sheets rather than micelles, allowing for improved oil compatibility and efficient deposition on skin, hair, and textile fibers
Data Source
AI summary
The present invention relates to a series of novel silicone polyesters which are prepared by crosslinking an alkyl dimethicone copolyol with a dimer acid. The reaction of the alkyl dimethicone copolyol and dimer acid results in a polyester having affinity to oils and that is highly lubricious on hair, skin and textile fiber.