Cationic Polymer Silicone Deposition for Hair Manageability

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Solution Overview

Problem

Existing personal care compositions, such as shampoos and conditioners, fail to deliver optimal conditioning properties while maintaining hair in a clean, non-greasy appearance, and there is a need for improved uniform deposition of silicones and other actives onto hair for increased manageability.

Innovation Solution

A personal care composition comprising a cationic polymer with 30 to 80 weight % cationic monomers, 10 to 65 weight % (meth)acrylamide monomers, and 0 to 30 weight % polar non-ionic derivatives of acrylic monomers, combined with silicone, which enhances uniform deposition and hair manageability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If silicones are added to shampoos to provide conditioning, then hair manageability is improved, but hair appearance becomes greasy

Engineering Contradiction:

Improvehair manageabilityVSAvoidgreasy appearance

Core Design Contradiction:

Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The patent modifies the chemical parameters of conditioning agents by using cationic polymers with specific charge densities and molecular weights, allowing silicone deposition at optimized levels that provide conditioning without excessive greasiness

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention combines silicones with cationic polymers in a composite conditioning system, where the cationic polymer acts as a carrier to deposit silicone uniformly onto hair, achieving both manageability and clean appearance

Inventive Principle:

Principle #40Composite materials

2Manufacturing precision

If conditioning agents are used to improve hair manageability, then uniform deposition of silicones is enhanced, but the composition complexity increases

Engineering Contradiction:

Improveuniform deposition of siliconesVSAvoidcomposition complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The cationic polymer serves multiple functions simultaneously: it conditions hair, facilitates uniform silicone deposition, and provides conditioning in shampoo formulations, reducing the need for separate ingredients

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 composition provides superior silicone deposition and improved hair manageability, maintaining a clean, non-greasy appearance, outperforming previous conditioning agents in terms of conditioning attributes.

Implementation Method 1

the cationic polymers contain as polymerized units cationic monomers... increased uniform deposition of silicones and other actives onto hair

Methodology Applied

Scientific EffectElectrostatic attraction: Electrostatic Induction

Data Source

PatentUS10195134B2Personal care compositions containing cationic polymers

Publication Date: 2019.02.05 DOW GLOBAL TECHNOLOGIES LLC

AI summary

Provided are compositions and methods that are useful for personal care compositions. The compositions comprise (a) a cationic polymer comprising polymerized units derived from (i) 30 to 80 weight % of cationic monomers, (ii) 10 to 65 weight % of (meth)acrylamide monomers, and (iii) 0 to 30 weight % of polar non-ionic derivatives of acrylic monomers, and (b) silicone. Also provided are methods of treating hair with such compositions.