Dry Cellulosic Compositions for Stable Reconstitution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing dry powdered compositions for liquid cleansing formulations face issues such as shelf life, uneven reconstitution, phase separation, and gel settling, which are not adequately addressed by existing technologies.
Innovation Solution
A dry composition comprising 30 to 90 wt% surfactant, 1 to 6 wt% chelating agent, 0.5 to 20 wt% preservative, and cellulosic polymer with a degree of substitution less than 0.7, which is reconstituted with a liquid carrier to form a stable liquid formulation with desired rheology and viscosity, avoiding gel settling and separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If dry powdered compositions are used as alternative to bottled liquid formulations, then packaging and handling costs are reduced and transport issues are avoided, but shelf life is compromised and reconstitution problems occur
Solution Approach 1:
The patent applies parameter changes by carefully controlling the degree of substitution (DS) of cellulosic polymer to be between 0.6 and 0.8, and maintaining specific ratios of different cellulosic polymers. These parameter optimizations ensure the dry powder maintains stability during storage while reconstituting properly to form stable liquid formulations without phase separation or gel settling.
Solution Approach 2:
The patent uses composite materials by combining multiple cellulosic polymers with different degrees of substitution (DS 0.6-0.8 and DS 0.85-0.95) in specific ratios. This composite approach creates a synergistic effect where the mixture provides both the stability needed for dry powder storage and the solubility required for proper reconstitution, resolving the contradiction between storage reliability and reconstitution performance.
2Ease of operation
If dry powdered compositions are reconstituted to liquid formulations, then delivery and shelf stability are improved, but uneven reconstitution and phase separation occur
Solution Approach 1:
The patent optimizes parameters by specifying cellulosic polymer degree of substitution within 0.6-0.8 and controlling the ratio between different polymer types. These parameter controls ensure uniform reconstitution by preventing both incomplete dissolution and phase separation, maintaining composition stability throughout the reconstitution process and final product storage.
Solution Approach 2:
The patent achieves homogeneity by using cellulosic polymers with controlled degree of substitution that ensure uniform dissolution in the liquid carrier. The specific polymer composition promotes homogeneous distribution of all formulation components, preventing phase separation and ensuring consistent reconstitution across different batches and storage conditions.
3Loss of energy
If conventional dry powdered compositions are used, then transportation costs are reduced, but gel settling and separation of phases occur
Solution Approach 1:
The patent employs composite materials by formulating dry powder with a specific mixture of cellulosic polymers having different degrees of substitution (0.6-0.8 and 0.85-0.95). This composite structure prevents gel settling and phase separation by creating a balanced system that maintains colloidal stability, allowing the product to be transported in dry powder form without the high costs associated with liquid formulation transportation.
Solution Approach 2:
The patent applies parameter changes by optimizing the degree of substitution of cellulosic polymers to specific ranges (0.6-0.8 and 0.85-0.95) and controlling their ratios. These parameter optimizations ensure that the dry powder formulation remains stable during transportation and storage, preventing gel settling and phase separation upon reconstitution, thereby enabling cost-effective dry powder transportation.
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 composition allows for stable, easy delivery and increased shelf stability of liquid cleansing formulations with improved reconstitution properties, reducing handling and transportation costs.
Implementation Method 1
cellulosic polymer, wherein at most 50 wt% of the total weight of cellulosic polymer has degree of substitution less than 0.7
Implementation Method 2
stable liquid formulation with desired rheology and viscosity, avoiding gel settling and separation
Implementation Method 3
A liquid formulation is obtained by reconstituting the dry composition according to the first aspect with a suitable liquid carrier
Data Source
AI summary
This invention relates to dry compositions and methods for forming stable liquid personal cleansing formulations. The dry composition of the present invention comprises 30 to 90 wt% of surfactant; 1 to 6 wt% of chelating agent; 0.5 to 20 wt% preservative; and cellulosic polymer, wherein at most 50 wt% of the total weight of cellulosic polymer has degree of substitution less than 0.7.