Fabric Conditioner Composition for Softening and Perfume Longevity
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Solution Overview
Problem
Conventional fabric conditioning compositions using quaternary ammonium compounds face issues with biodegradability and eco-toxicity, and ester quats have stability problems, while fragrance materials in these compositions have short longevity on fabrics.
Innovation Solution
A composition comprising a biodegradable quaternary ammonium compound, a cationic polysaccharide, and a nonionic polysaccharide, which provides enhanced softening performance and improved perfume longevity by synergistic effects, allowing for gradual fragrance release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If quaternary ammonium compounds are used for fabric softening, then softening performance is improved, but biodegradability deteriorates and eco-toxicity increases
Solution Approach 1:
The patent changes the chemical structure parameters of the quaternary ammonium compound by introducing biodegradable ester linkages (using fatty acid esters with 8-22 carbon atoms) while maintaining the softening function. This structural modification enables biodegradation without significantly compromising softening performance, thus resolving the contradiction between reliability and environmental harm.
Solution Approach 2:
The patent creates a composite fabric conditioning system combining biodegradable ester quats with polysaccharide polymers (cationic and/or nonionic). This composite approach leverages the softening capability of quats and the film-forming properties of polysaccharides, achieving effective softening while improving biodegradability and reducing eco-toxicity through the use of more environmentally benign components.
2Object-affected harmful factors
If ester quats are used to improve biodegradability, then eco-toxicity is reduced, but stability deteriorates
Solution Approach 1:
The patent formulates a composite system where biodegradable ester quats are combined with polysaccharide polymers (cationic and/or nonionic). The polysaccharides act as stabilizing agents that compensate for the inherent instability of ester quats, particularly at higher concentrations. This composite approach maintains improved biodegradability and reduced eco-toxicity while achieving satisfactory stability through synergistic interactions between components.
Solution Approach 2:
The polysaccharide polymers serve as intermediary substances that mediate between the unstable ester quats and the fabric substrate. These polymers provide structural support and stability to the conditioning composition, allowing the ester quats to function effectively without compromising overall formulation stability.
3Ease of operation
If fragrance materials are incorporated into fabric conditioning compositions, then pleasant odour is provided, but fragrance longevity deteriorates
Solution Approach 1:
The patent creates a composite fabric conditioning composition that includes fragrance materials combined with polysaccharide polymers (cationic and/or nonionic) and biodegradable ester quats. The polysaccharides and quats work synergistically to enhance fragrance substantivity and longevity on fabric surfaces, allowing the pleasant odour to persist longer without compromising the other beneficial properties of the composition.
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 achieves stable softening performance and extended perfume longevity on fabrics, addressing the biodegradability and stability issues of existing systems while enhancing fragrance substantivity.
Implementation Method 1
the fragrance materials or the perfumes tend to be dissipated very quickly... provides excellent softening performance, and improved perfume longevity... extended perfume longevity on fabrics, addressing the biodegradability and stability issues of existing systems while enhancing fragrance substantivity
Data Source
AI summary
The present invention relates to a method for conditioning a fabric comprising the step of contacting the fabric with an aqueous medium comprising a composition, wherein the composition comprises: (a) a quaternary ammonium compound; (b) a cationic polysaccharide; and (c) a nonionic polysaccharide. In particular, the quaternary ammonium compound is a biodegradable quaternary ammonium compound. The composition has excellent softening performance and improved perfume longevity. The present invention also relates to use of said composition for conditioning a fabric.