Sterically Hindered Amine Salts for Product Color Stability

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Solution Overview

Problem

Body care and household products face challenges in maintaining color stability and resisting chemical degradation due to light, heat, and oxygen exposure, with existing solutions not providing adequate protection against these factors.

Innovation Solution

The use of sterically hindered amine salt compounds, specifically formulated to be incorporated into body care and household products at concentrations of 5 to 10000 ppm, which provide protection against light-induced fading and chemical degradation by stabilizing dyes and other ingredients.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If body care and household products are exposed to light, heat, and oxygen, then chemical degradation and color fading occur, but existing stabilization solutions do not provide adequate protection

Engineering Contradiction:
Improveprotection against chemical degradationVSAvoidlight-induced fading and color change
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies parameter changes by modifying the chemical structure of amine compounds through salt formation with specific acids (carboxylic, inorganic, or organic acids). This chemical parameter change transforms the amine compound into a salt form that provides superior stabilization against light, heat, and oxygen while maintaining compatibility with body care and household product formulations. The specific choice of acid and resulting salt structure optimizes the protective parameters of the stabilizer.

Inventive Principle:
Principle #35Parameter changes

2Stability of the object's composition

If sterically hindered amine salt compounds are used to stabilize dyes, then color stability is improved, but the complexity of formulation increases

Engineering Contradiction:
Improvecolor stabilityVSAvoidformulation complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent applies universality by developing amine salt compounds that provide multi-functional protection against multiple degradation mechanisms simultaneously (light, heat, and oxygen). A single amine salt compound serves as a comprehensive stabilizer that protects dyes, fragrances, and other sensitive ingredients in body care and household products, reducing the need for multiple separate stabilizing agents and simplifying the overall formulation approach.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 sterically hindered amine salt compounds effectively stabilize dyes and other ingredients in body care and household products, ensuring excellent color stability and resistance to chemical degradation, as demonstrated by reduced color change under light exposure in various product formulations.

Implementation Method 1

stabilized body care products, household products, textiles and fabrics containing sterically hindered amine salt compound... protection against light-induced fading and chemical degradation

Methodology Applied
Scientific EffectFree radical scavenging: Oxidation

Data Source

PatentEP1893169B1Stabilized body care products, household products, textiles and fabrics containing sterically hindered amine salt compound
Publication Date: 2015.11.18 CIBA HOLDING INC
  • EP1893169B1 patent drawing
  • EP1893169B1 patent drawing
  • EP1893169B1 patent drawing

AI summary

Disclosed are stabilized body care products, household products, textiles and fabrics which comprise certain sterically hindered amine salt compounds. Dyed products and articles are effectively stabilized against color degradation. The products are for example skin-care products, hair-care products, dentifrices, cosmetics, laundry detergents and fabric softeners, non-detergent based fabric care products, household cleaners and textile-care products.