Dissolvable Solid Conditioning Matrix for Hydrophobic Agent Retention

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Solution Overview

Problem

Consumer product compositions containing hydrophobic conditioning agents face challenges in maintaining stable, large particle sizes to effectively deposit and retain these agents on treated surfaces, leading to wastage due to their small particle size and instability in aqueous treatment liquors.

Innovation Solution

A non-porous dissolvable solid structure with a carrier material that maintains hydrophobic conditioning agents at a desired mean particle size of 2 µm to 120 µm, which dissolves in an aqueous solution to form an aqueous treatment liquor, ensuring effective deposition and retention of the agents on treated surfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If hydrophobic conditioning agents are incorporated in aqueous liquid compositions as emulsions with small particle size, then the formulation stability is improved, but the deposition and retention on treated surfaces deteriorates

Engineering Contradiction:
Improveformulation stabilityVSAvoiddeposition and retention on treated surfaces
Core Design Contradiction:
Stability of the object's compositionVSReliability

Solution Approach 1:

The patent changes the particle size parameter of the hydrophobic conditioning agent from sub-micron (in emulsions) to larger particles (2 μm to 2,000 μm). This parameter change allows the conditioning agent to be incorporated into a solid dissolvable structure rather than requiring an emulsion system, thereby improving deposition and retention on treated surfaces while maintaining formulation stability through the solid matrix.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If encapsulation systems are used for hydrophobic conditioning agents, then the deposition and retention on surfaces is enhanced, but the effectiveness of the conditioning agents is limited

Engineering Contradiction:
Improvedeposition and retention on surfacesVSAvoideffectiveness of conditioning agents
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

The patent extracts the hydrophobic conditioning agent from encapsulation systems and incorporates it directly into a solid dissolvable structure. This eliminates the encapsulation barrier that limits conditioning agent effectiveness, allowing the agent to be released in its active form while still achieving enhanced deposition and retention through the larger particle size and solid structure.

Inventive Principle:
Principle #2Taking out (Extraction)

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 maintains the large particle size of hydrophobic conditioning agents during storage and use, enhancing deposition and retention on treated surfaces, thereby providing improved consumer benefits such as softness and silky feel.

Implementation Method 1

a non- porous dissolvable solid structure comprising a carrier material, and a hydrophobic conditioning agent disposed within the carrier material

Methodology Applied
Scientific EffectDissolution:

Data Source

PatentEP3283175B1Solid conditioning composition
Publication Date: 2026.05.06 PROCTER & GAMBLE CO
  • EP3283175B1 patent drawingFigure 1A~1B
  • EP3283175B1 patent drawingFigure 2
  • EP3283175B1 patent drawingFigure 3A~3B

AI summary

A consumer product composition comprises a non-porous dissolvable solid structure comprising a carrier material and a hydrophobic conditioning agent disposed within the carrier material, wherein the hydrophobic conditioning agent has a mean particle size of from about 2 µm to about 2000 µm. Preferred products are shampoos, hair conditioners, laundry detergents and fabric softeners. Preferably the carrier material comprises a polyethylene glycol and the conditioning agent comprises a silicone or polyisobutene. A method of treating a surface comprises dissolving the consumer product composition in an aqueous solution to form an aqueous treatment liquor and contacting the surface with the liquor.