Detergent composition comprising a cationic derivative of a polysaccharide
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Solution Overview
Problem
Automatic dishwashing detergents often leave mineral deposits on hard surfaces, causing spotting and filming, which are aesthetically displeasing and question the cleanliness of the surfaces, and existing solutions using builders or cationic polysaccharides are not environmentally friendly.
Innovation Solution
A detergent composition incorporating a cationic derivative of a polysaccharide with an average molecular weight less than 30000 g/mol and a degree of substitution between 0.01 and 3, which is highly soluble in water, is used to reduce or prevent spotting and filming on hard surfaces during washing and rinsing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If builders and/or surfactants are used to avoid spotting and filming, then the anti-spotting and anti-filming performance is improved, but the environmental friendliness deteriorates
Solution Approach 1:
The patent changes the chemical parameters by using cationic polysaccharides with specific molecular weights (below 30,000 g/mol) and degrees of substitution (0.01 to 3), which provides effective anti-spotting and anti-filming performance while being environmentally friendly, thus resolving the contradiction between performance and environmental friendliness
Solution Approach 2:
The patent employs composite cationic polysaccharide structures combining specific molecular weight ranges with controlled degrees of substitution, creating a material that achieves both effective spotting prevention and environmental compatibility, eliminating the need for harmful builders and surfactants
2Reliability
If cationic polysaccharides with high molecular weight are used, then spotting prevention is improved, but film formation is not avoided
Solution Approach 1:
The patent applies parameter changes by strictly controlling the molecular weight below 30,000 g/mol and the degree of substitution between 0.01 and 3, which simultaneously prevents both spotting and film formation, resolving the contradiction between spotting prevention and film avoidance that plagues high molecular weight cationic polysaccharides
Data Source
AI summary
The invention relates to a detergent composition comprising at least one cationic derivate of a polysaccharide. The cationic derivate has an average molecular weight of less than 30000 g/mol, a degree of substitution ranging between 0.01 and 3. The invention further relates to a method of reducing, limiting or preventing the occurrence of spotting and/or filming on hard surface substrates during rinsing or washing and to the use of a detergent composition to reduce, limit or prevent the occurrence of spotting and/or filming on hard surface substrates during rinsing and/or washing.