Hand Dishwashing Detergent Composition for Soft-Water Drying
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid hand dishwashing detergents, even with cationic polymers, do not adequately improve drying time of dishware, particularly in soft water, necessitating further enhancement of drying speed after washing.
Innovation Solution
A liquid hand dishwashing detergent composition comprising a surfactant system with a cationic polymer, such as quaternised acrylic copolymer or cationic polyvinyl alcohol, and a 1,2-alkanediol, which enhances the drying speed of dishware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If cationic polymers are added to improve water sheeting and drying speed, then drying performance is improved, but the effect is insufficient especially in soft water conditions
Solution Approach 1:
The patent combines cationic polymers with 1,2-alkanediols to create a composite detergent system. The 1,2-alkanediols enhance the water sheeting properties and drying performance of the cationic polymers, particularly in soft water conditions where cationic polymers alone are insufficient. This composite approach allows the formulation to achieve reliable drying performance across different water hardness levels.
Solution Approach 2:
The patent modifies the chemical parameters of the detergent system by introducing 1,2-alkanediols with specific chain lengths (C6-C14). These parameter changes in molecular structure and composition enhance the interaction between the detergent and water, improving water sheeting and drying speed while maintaining consistency across different water hardness conditions.
2Productivity
If manual dishwashing is performed to clean dishware, then cleaning is achieved, but the process is time-consuming and drying is delayed
Solution Approach 1:
The detergent formulation includes cationic polymers and 1,2-alkanediols that pre-condition the dishware surface during the washing process. This preliminary action of modifying the surface properties ensures rapid water sheeting and accelerated drying occurs automatically after rinsing, eliminating the need for separate drying steps and reducing overall time loss.
3Ease of operation
If water hardness is low (soft water), then washing is easier, but water sheeting and drying performance are reduced
Solution Approach 1:
The patent introduces 1,2-alkanediols with optimized chain lengths (C6-C14) that change the physical-chemical parameters of the detergent solution. These parameter changes enhance the formulation's ability to reduce surface tension and promote water sheeting, compensating for the reduced water hardness effect and maintaining fast drying performance even in soft water conditions.
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 significantly improves the drying speed of dishware by incorporating a surfactant system with a cationic polymer and 1,2-alkanediol, addressing the inefficiencies of existing detergents in soft water conditions.
Implementation Method 1
The use of cationic polymers, including quaternised acrylic copolymers, cationic polyvinyl alcohols and cationic celluloses for improving sheeting of water off dishware
Implementation Method 2
a surfactant system which increases the efficacy of the quaternised acrylic copolymer
Data Source
AI summary
The need for a liquid hand dishwashing detergent, comprising a surfactant system and a cationic polymer selected from the group consisting of quaternised acrylic copolymer, cationic polyvinyl alcohol, cationic polysaccharides, and mixtures thereof, having further improved speed of drying of dishware after hand dishwashing, is met by further formulating the composition with an 1,2-alkanediol comprising from 4 to 14 carbon atoms. The need for a liquid hand dishwashing detergent, comprising a cationic polymerand a surfactant system, having further improved speed of drying of dishware afterhand dishwashing, is met by further formulating the composition with an1,2-alkanediol comprising from 4 to 14 carbon atoms. The need for a liquid hand dishwashing detergent, comprising a cationic polymerand a surfactant system, having further improved speed of drying of dishware afterhand dishwashing, is met by further formulating the composition with an1,2-alkanediol comprising from 4 to 14 carbon atoms.