Polymeric Agents for Primary Washing Efficiency
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Solution Overview
Problem
Current detergents and cleaning agents face challenges in effectively removing oily and greasy soiling from textiles and hard surfaces, as existing polymers do not provide sufficient primary detergency, leading to suboptimal cleaning performance.
Innovation Solution
The use of poly(N,N-dimethylacrylamide) and its copolymers with specific co-monomers, such as acrylamide and methacrylamide, which exhibit surface-active properties and enhance primary detergency by reducing surface tension, thereby improving the removal of grease and cosmetic stains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional polymers are used in detergents, then detergent composition is maintained, but primary washing power against oily and greasy soiling is insufficient
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure of polymeric additives, specifically using N,N-dimethylacrylamide as the core monomer with specific co-monomers to create polymers with optimized molecular weight (10,000-1,000,000 g/mol) and composition ratios that enhance primary detergency against oily and greasy soiling
Solution Approach 2:
The patent employs composite materials by creating copolymers that combine N,N-dimethylacrylamide with specific co-monomers (such as acrylamide, methacrylamide, or N-acryloylpyrrolidone) in controlled molar ratios (1:99 to 99:1), resulting in a composite polymeric structure that synergistically improves washing performance
2Reliability
If more surfactants are used to improve cleaning performance, then washing power increases, but surfactant concentration and potential harmful effects increase
Solution Approach 1:
The patent introduces polymeric additives as intermediary substances that work synergistically with surfactants to enhance cleaning performance. These polymers act as mediators that improve the effectiveness of surfactant systems, allowing reduced surfactant concentrations while maintaining or improving overall washing power
Solution Approach 2:
The patent changes the compositional parameters of the detergent system by incorporating specific polymeric additives at optimized concentrations (0.1-10% by weight), which modifies the overall system performance and allows for reduced surfactant content while maintaining cleaning effectiveness
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
These polymers significantly enhance the detachment of grease and cosmetic stains on textiles and hard surfaces, allowing for better cleaning performance with reduced surfactant usage or improved stain removal efficiency.
Implementation Method 1
The polymer is preferably surface-active such that its presence at a concentration of 0.2 g/l in water at 25 °C leads to a reduction in surface tension of at least 10%, and in particular of 30% to 70%
Data Source
AI summary
The aim of the invention is to improve the primary washing efficiency of washing and cleaning agents, in particular with respect to oil- and/or fat-containing dirt. Said aim is substantially achieved by incorporating polymers derived from N,N-dimethylacrylamide.