Blocky Cationic Organopolysiloxane Polymer Deposition

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing consumer product compositions face challenges in effectively depositing and providing conditioning benefits to substrates, particularly due to issues with cationic charge distribution, interference from anionic surfactants, and stability concerns, leading to inefficiencies and waste in products like shampoos and fabric softeners.

Innovation Solution

A blocky cationic organopolysiloxane polymer with controlled charge density and hydrophobicity is formulated, allowing for optimized surface deposition and retention, and is stable over long-term storage, avoiding the limitations of previous silicone polymers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If cationic conditioning polymers are used to provide conditioning benefits, then surface deposition and retention are improved, but anionic surfactants in the formulation interfere with deposition and reduce stability

Engineering Contradiction:

Improveconditioning polymer deposition and retentionVSAvoidinterference from anionic surfactants

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent introduces a nonionic surfactant as an intermediary component in the composition. This nonionic surfactant acts as a mediator that prevents the harmful interaction between anionic surfactants and cationic conditioning polymers, allowing both to coexist without forming precipitates or complexes that would reduce deposition effectiveness.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent modifies the chemical parameters of the formulation by carefully controlling the charge density of the cationic polymer (0.05-12 meq/g) and the concentration ratios of different surfactant types. By adjusting these parameters, the composition achieves stable coexistence of anionic and cationic components while maintaining effective conditioning polymer deposition.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If hydrophobic benefit agents are incorporated into aqueous-based products, then conditioning performance is improved, but the agents are preferentially rinsed away during washing

Engineering Contradiction:

Improveconditioning performanceVSAvoidloss of hydrophobic benefit agents during rinsing

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent creates a composite conditioning system where hydrophobic silicone polymers are combined with hydrophilic surfactants and charged groups. This composite structure allows the hydrophobic conditioning agents to adhere to the charged substrate surface through electrostatic interactions, preventing rinsing loss while maintaining their conditioning performance.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent applies local quality by creating regions of high charge density at the substrate surface through the cationic polymer. This concentrated charge region locally anchors the hydrophobic conditioning agents, ensuring they remain at the target site (substrate surface) rather than being uniformly distributed and rinsed away.

Inventive Principle:

Principle #3Local quality

3Stability of the object's composition

If cationic charge is highly dispersed along the polymer chain, then formulation stability is improved, but surface deposition effectiveness is reduced

Engineering Contradiction:

Improveformulation stabilityVSAvoidsurface deposition effectiveness

Core Design Contradiction:

Stability of the object's compositionVSReliability

Solution Approach 1:

The patent optimizes the charge density parameter within a specific range (0.05-12 meq/g) to balance two competing requirements: sufficient charge dispersion for formulation stability and adequate charge concentration for effective surface deposition. This parameter optimization resolves the contradiction between stability and effectiveness.

Inventive Principle:

Principle #35Parameter changes

4Adaptability or versatility

If quaternized aminosilicone polymers are formulated with anionic surfactants, then consumer product versatility is improved, but flocculation and precipitation occur reducing stability

Engineering Contradiction:

Improveproduct formulation versatilityVSAvoidcomposition stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent uses nonionic surfactants and carefully controlled polymer architectures as intermediaries to prevent direct harmful interactions between anionic surfactants and cationic polymers. This intermediary approach allows the formulation to maintain versatility by including both surfactant types while avoiding flocculation and precipitation.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 blocky cationic organopolysiloxane polymer ensures effective deposition and retention of conditioning benefits on substrates, enhancing the performance and stability of consumer products while minimizing waste and improving shelf-life.

Implementation Method 1

Conditioning polymers meant for deposition onto negatively charged surfaces... the cationic charge being distributed too randomly along the length of the benefit agent polymer

Methodology Applied

Scientific EffectElectrostatic attraction: Electrostatics

Data Source

PatentUS9580670B2Consumer product compositions comprising organopolysiloxane conditioning polymers

Publication Date: 2017.02.28 PROCTER & GAMBLE CO

AI summary

Consumer product compositions comprising organopolysiloxane conditioning polymers. Also disclosed are processes for making such compositions and to methods of using such compositions to provide a conditioning benefit.