Perfume Micro-Capsule Fabric Care Composition for Fragrance Stability

Solution Overview

Problem

Fabric-care compositions with perfume micro-capsules face challenges in maintaining consistent perfume character over time, especially when stored, due to changes in surfactant levels and perfume raw material properties, limiting flexibility and perfume benefits like freshness and longevity.

Innovation Solution

An aqueous fabric care composition with reduced surfactant levels, comprising 0-5% anionic, 0-3% cationic, and 0-3% non-ionic surfactants, and 0.01-15% perfume micro-capsules, with a high water content (50-99.99%), which helps maintain a stable perfume character over time by minimizing surfactant impact and optimizing perfume raw material ClogP values.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If perfume mixtures are designed to be less sensitive to aging, then perfume character stability is improved, but other perfume benefits such as freshness, longevity, deepness, and balance are compromised

Engineering Contradiction:
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent changes the chemical parameters of the composition by reducing surfactant concentrations to specific ranges (anionic: 0.01-5%, cationic: 0.01-3%, non-ionic: 0.01-3%) and adjusting the perfume raw material composition with optimized ClogP values. These parameter changes enable the perfume to maintain its character stability while preserving freshness, longevity, and balance.

Inventive Principle:
Principle #35Parameter changes

2Stability of the object's composition

If surfactant levels are reduced in the composition, then perfume character consistency over time is improved, but fabric care effectiveness may be compromised

Engineering Contradiction:
Core Design Contradiction:
Stability of the object's compositionVSReliability

Solution Approach 1:

The patent optimizes surfactant concentration parameters within specific ranges rather than eliminating them completely. This balanced approach reduces surfactant impact on perfume stability while maintaining sufficient fabric care effectiveness through the synergistic combination of reduced surfactants and optimized perfume raw materials.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses a composite formulation combining multiple types of surfactants (anionic, cationic, non-ionic) at optimized concentrations with carefully selected perfume raw materials. This composite approach allows the system to achieve both perfume character consistency and fabric care effectiveness through the synergistic interaction of components.

Inventive Principle:
Principle #40Composite materials

3Adaptability or versatility

If perfume mixtures are optimized for freshness and longevity, then perfume quality is improved, but perfume character changes over aging

Engineering Contradiction:
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent changes the composition parameters by selecting perfume raw materials with optimized ClogP values and controlling surfactant concentrations. This parameter optimization allows the perfume to deliver freshness, longevity, and balance while maintaining character stability during aging, resolving the trade-off between quality benefits and stability.

Inventive Principle:
Principle #35Parameter changes

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 effectively reduces perfume character changes, ensuring a consistent smell experience whether used fresh or after storage, while allowing for a balanced and fresh fragrance without compromising other perfume benefits.

Implementation Method 1

The perfume comprised in the capsules is then released over-time, for example by leakage or breakage of the capsules while the fabric are worn.

Methodology Applied
Scientific EffectLeakage:

Implementation Method 2

from 0 wt % to 5 wt % of anionic surfactant, from 0 wt % to 3 wt % of cationic surfactant, from 0 wt % to 3 wt % of a non-ionic surfactant

Methodology Applied
Scientific EffectSurfactant: Surfactant

Data Source

PatentUS9328319B2Fabric care composition
Publication Date: 2016.05.03

AI summary

An aqueous fabric care composition having perfume micro-capsules. The smell provided by the freshly formulated composition and the same composition after storage has a limited character and intensity change. The composition has from about 0 wt % to about 5 wt % of anionic surfactant, from about 0 wt % to about 3 wt % of cationic surfactant, from about 0 wt % to about 3 wt % of a non-ionic surfactant, from about 0.01 wt % to about 15 wt % of perfume micro-capsules and water.