Ester Oil Laundry Composition Color Fade Prevention
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Solution Overview
Problem
There is a need for ancillary laundry compositions that provide improved color care benefits, including color maintenance for white fabrics, as existing products do not effectively prevent color fade over multiple laundry cycles.
Innovation Solution
A solid ancillary laundry composition comprising 0.25 to 10 wt.% ester oil, 0 to 4 wt.% anionic and/or cationic surfactant, and at least 50 wt.% of a carrier material selected from synthetic polymers, proteins, saccharides, polysaccharides, vegetable soap, ethoxylated non-ionic surfactants, and urea, which is added during the wash or rinse stage to prevent color fade and maintain fabric whiteness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing ancillary laundry products are used, then consumers can provide additional benefits to fabrics, but color fade prevention over multiple laundry cycles is insufficient
Solution Approach 1:
The patent changes the chemical parameters of the laundry composition by incorporating specific polyol esters with defined molecular weights and hydroxyl values, along with controlled amounts of surfactants and fragrances. These parameter changes enable the composition to provide effective color protection that maintains fabric color intensity over multiple laundry cycles, addressing the insufficient durability of existing products.
Solution Approach 2:
The invention uses a composite formulation combining polyol esters, surfactants, fragrances, and other auxiliary agents in specific proportions. This composite material approach creates a synergistic effect where the combination of ingredients provides superior color maintenance and protection durability compared to single-component products, resolving the contradiction between reliability and duration.
2Reliability
If polyol ester is used as ester oil in the composition, then color care benefits are improved, but formulation complexity increases
Solution Approach 1:
The patent specifies precise parameter ranges for polyol esters including molecular weight (500-5000), hydroxyl value (10-100 mg KOH/g), and ester content (80-95%). By controlling these parameters within defined ranges, the formulation achieves effective color care while managing complexity through standardized specifications rather than requiring complex multi-component systems.
3Object-affected harmful factors
If surfactant content is limited to 0-4 wt.%, then fabric treatment is gentle, but cleaning effectiveness may be reduced
Solution Approach 1:
The patent optimizes surfactant concentration within 0-4 wt.% and specifies HLB values between 8-18 for the surfactants used. This parameter optimization allows the composition to provide adequate cleaning performance while maintaining gentle fabric treatment, resolving the contradiction between cleaning effectiveness and fabric protection by finding the optimal concentration range.
Solution Approach 2:
The invention combines multiple ingredients including polyol esters, surfactants, fragrances, and auxiliary agents in a composite formulation. This composite approach compensates for the limited surfactant content by leveraging synergistic interactions between components, maintaining cleaning effectiveness while reducing potential fabric damage from excessive surfactant use.
Data Source
AI summary
An ancillary laundry composition comprising 0.25 to 10 wt.% ester oil, free perfume and 0 to 4 wt. % anionic and/or cationic surfactant. A method of laundering clothes, wherein said composition is added in the wash or rinse stage. A method of preventing colour fade over (10) laundry cycles, wherein fabrics are treated with said composition during each consecutive laundry cycle. Use of said composition to provide an improved colour maintenance or reduced colour fade over consecutive laundry cycles, preferably (10), more preferably (5) laundry cycles.