Laundry Detergent Booster Composition for Lower Surfactant Loading
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Solution Overview
Problem
There is a need for liquid laundry detergent formulations that maintain primary cleaning performance with reduced surfactant loading, improved anti-redeposition performance, and enhanced biodegradability according to OECD 301F protocol.
Innovation Solution
A laundry detergent formulation comprising a carrier, a cleaning surfactant, and a cleaning booster of specific molecular structures (R1-A1-R1) where A1 is a divalent linking group with 4 to 24 carbon atoms, R1 is selected from certain formulas, and R2, R3, R4, and R5 are defined to enhance cleaning and biodegradability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the amount of surfactant in laundry detergent is reduced, then environmental sensitivity and material costs are improved, but cleaning performance deteriorates
Solution Approach 1:
The patent combines conventional surfactants with a specifically designed polymer cleaning booster in a composite detergent formulation. The polymer booster (comprising repeating units with divalent linking groups and specific side chains) works synergistically with the surfactants to provide enhanced cleaning performance at reduced surfactant concentrations, directly resolving the contradiction between reducing surfactant amount and maintaining cleaning effectiveness
Solution Approach 2:
The patent modifies the chemical structure parameters of the cleaning booster by controlling the number of carbon atoms in the divalent linking group (A1) to be 4-24, the number of repeating units (n) to be 2-10, and the specific chemical groups present. These parameter changes optimize the polymer's interaction with soil particles and fabric, enabling effective cleaning with lower surfactant levels
2Reliability
If conventional cleaning boosters are used, then cleaning performance is maintained, but biodegradability deteriorates according to OECD 301F protocol
Solution Approach 1:
The patent changes the chemical composition parameters of the cleaning booster by incorporating specific biodegradable functional groups including ester linkages, carboxylic acid groups, and controlled hydrocarbon chain lengths (C1-22 alkyl groups). These parameter modifications ensure the polymer meets OECD 301F biodegradability criteria while preserving cleaning effectiveness through optimized molecular structure
Solution Approach 2:
The patent designs a biodegradable polymer booster that can be disposed of environmentally after use, breaking down into harmless products. The polymer's molecular structure includes hydrolyzable linkages and natural-looking side chains that facilitate biological degradation, replacing conventional non-biodegradable cleaning boosters while maintaining performance
3Quantity of substance
If surfactant loading is reduced, then environmental and cost benefits are achieved, but anti-redeposition performance deteriorates
Solution Approach 1:
The patent creates a composite system where the polymer cleaning booster and surfactants work together to prevent soil redeposition. The polymer's specific molecular structure (with divalent linking groups and carboxylic acid side chains) provides electrostatic and physical barriers that prevent cleaned fabric from re-absorbing soil, compensating for the reduced surfactant loading and maintaining anti-redeposition performance
Data Source
AI summary
A laundry detergent is provided, comprising: carrier; cleaning surfactant; and cleaning booster of formula (I) wherein A1 is divalent linking group having-24 carbon atoms; and wherein R1 is selected from formula (II), formula (III) and formula (IV) wherein * is point of attachment to formula (I); wherein a is 1-2; wherein b is 1-2; and wherein R2 is of formula (V) wherein * is point of attachment to associated base formula; wherein R3 is selected from hydrogen and C1-22 alkyl group; wherein R4 and R5 are selected from hydrogen and C1-2 alkyl group, with proviso that at least one of R4 and R5 is hydrogen in each subunit c; and wherein c is 0-30; and with the proviso that when the divalent linking group, A1, has 4 carbon atoms, the divalent linking group, A1, includes a cycle.