Laundry Softening Particles with Branched Polyester
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Solution Overview
Problem
Consumers face inconvenience in laundry processes due to the need to dose separate detergent and fabric softening compositions, which are often incompatible, leading to stability issues and decreased cleaning performance when combined.
Innovation Solution
A through-the-wash fabric softening composition comprising particles with a water-soluble carrier and branched polyester, allowing for convenient dosing and improved softening during the washing step without the need for separate products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If liquid detergent composition and liquid softening composition are combined in a single package, then consumer convenience is improved by dosing to a single location, but stability deteriorates due to formation of solid precipitate from anionic and cationic surfactant incompatibility
Solution Approach 1:
The invention divides the softening composition into separate solid particles that are physically distinct from the liquid detergent. Each particle contains encapsulated softening agents (cationic surfactants, silicones) that remain isolated until dissolution during the wash cycle, preventing premature precipitation while enabling single-location dosing convenience.
Solution Approach 2:
The invention changes the physical state of the softening composition from liquid to solid particles. This parameter change allows the softening agents to be stored in a stable solid form that dissolves during washing, resolving the stability issue while maintaining the ability to dose with detergent in a single location.
2Stability of the object's composition
If solid form softening agents are used, then packaging stability is improved, but softening performance deteriorates due to decreased solubility and uneven deposition causing spotting
Solution Approach 1:
The invention creates composite particles combining water-soluble carrier materials with encapsulated softening agents (quat, silicone). This composite structure ensures the particle dissolves completely during washing, releasing the softening agents uniformly to prevent spotting while maintaining packaging stability through the solid form.
Solution Approach 2:
The invention uses water-soluble carrier materials and deposition aids as intermediaries between the solid particle form and the fabric. These intermediaries facilitate complete dissolution and uniform distribution of the softening agents, ensuring reliable softening performance without spotting while maintaining solid particle stability in packaging.
3Stability of the object's composition
If separate dosing of detergent and softening composition is required, then composition stability is maintained, but consumer convenience deteriorates due to multiple dosing locations and perceived messiness
Solution Approach 1:
The invention merges the detergent and softening composition dosing into a single location by providing solid softening particles that can be added to the same dispenser or washing machine compartment as the liquid detergent. The particles remain stable separately but combine functionally during the wash cycle, achieving both stability and convenience.
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 solution provides enhanced softness and convenience by allowing consumers to dose a single product, ensuring stability and effective softening without compromising cleaning performance.
Implementation Method 1
about 25% to about 94% by weight a water-soluble carrier
Data Source
AI summary
A composition including a plurality of particles, the particles including: about 25% to about 94% by weight a water-soluble carrier; about 5% to about 45% by weight of a branched polyester; and an optional deposition aid; wherein each of the particles can have a mass from about 1 mg to about 1 g.