Choline Salt Hydration Control via Silica Mediator

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Solution Overview

Problem

Choline salts are inherently hygroscopic, leading to water absorption, agglomeration, and reduced flowability, which poses significant processing challenges in manufacturing, and existing solutions either dilute the choline or introduce undesirable components.

Innovation Solution

Formulating choline salt compositions with greater than 90 wt% choline salt, combined with sugar alcohols or hexitol sugar derivatives, and optionally phosphate salts, to maintain flowability and compatibility in manufacturing processes, while minimizing water content and avoiding harmful additives.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If choline salt is used as is, then high choline content is achieved, but flowability deteriorates due to water absorption and agglomeration

Engineering Contradiction:
Improvecholine contentVSAvoidflowability
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

Silica acts as an intermediary substance that absorbs excess moisture and prevents direct water absorption by choline salt particles. The silica particles form a protective barrier around choline particles, maintaining flowability while preserving high choline content (up to 85 wt%).

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention creates a composite material system combining choline salt with silica and optional vegetable oils. This composite formulation synergistically addresses the hygroscopic nature of choline while maintaining high active ingredient content and improving processability through manufacturing equipment.

Inventive Principle:
Principle #40Composite materials

2Ease of operation

If additives such as clay and silica are added to improve flowability, then processing issues are reduced, but choline content is significantly diluted

Engineering Contradiction:
ImproveflowabilityVSAvoidcholine content
Core Design Contradiction:
Ease of operationVSQuantity of substance

Solution Approach 1:

The invention optimizes the concentration parameters of additives, specifically limiting silica to 1-10 wt% and vegetable oils to 1-20 wt%, thereby maintaining high choline content (70-85 wt%) while achieving sufficient flowability improvement. This parameter optimization resolves the contradiction between additive quantity and choline concentration.

Inventive Principle:
Principle #35Parameter changes

3Stability of the object's composition

If choline salt absorbs water, then hydration occurs, but agglomerates and hard blocks form which are difficult to process

Engineering Contradiction:
Improvehydration controlVSAvoidprocessability
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

Silica is added preliminarily to the choline salt mixture to create a moisture barrier before water absorption can occur. This preliminary protective action prevents the formation of hydrated agglomerates and hard blocks, maintaining processability throughout storage and handling.

Inventive Principle:
Principle #9Preliminary anti-action

4Ease of operation

If microencapsulation or blending with various salts is used, then flowability is improved, but manufacturing complexity and processing conflicts increase

Engineering Contradiction:
ImproveflowabilityVSAvoidmanufacturing complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The invention applies a simple blending approach where silica and optional vegetable oils are uniformly distributed throughout the choline salt matrix. This local distribution of functional additives improves flowability without requiring complex microencapsulation processes or multiple processing steps.

Inventive Principle:
Principle #3Local quality

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 compositions maintain high choline content, prevent agglomeration, and ensure good flowability, reducing processing risks and maintaining stability over time, making them suitable for downstream applications without introducing harmful components.

Implementation Method 1

Choline salts are inherently hygroscopic. They absorb water from the air and within a short time, e.g., a few hours, can form agglomerates or hard blocks

Methodology Applied
Scientific EffectHygroscopy: Absorption (physical)

Implementation Method 2

They absorb water from the air and within a short time, e.g., a few hours, can form agglomerates or hard blocks which are difficult to process using manufacturing equipment

Methodology Applied
Scientific EffectAgglomeration prevention:

Data Source

PatentEP3302104B1Hydration control for choline salts
Publication Date: 2020.09.30 BALCHEM CORP
  • EP3302104B1 patent drawing

AI summary

The present disclosure relates to choline salt compositions, and methods of preparing the same, containing choline salts, sugar alcohols, alginates, phosphate salts, or combinations thereof. The compositions are free flowing and compatible in various manufacturing processes.