Pigment-Starch Particulates in Anionic Polymer Cosmetics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Dry shampoos often leave a gray film or visible residues on hair and suffer from incomplete cleaning, and the addition of styling and color effects is hindered by clumping issues in aerosol sprays due to film formers and inadequate pigment adhesion.
Innovation Solution
A cosmetic composition combining pigment-comprising starch as a carrier material with a special anionic polymer that is soluble in anhydrous solvents, preventing water introduction and clumping, along with synthetic inorganic pigments for improved adhesion and water-resistant effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If starch is used as carrier material in dry shampoo, then cleaning performance is improved, but gray film and visible residues remain on hair
Solution Approach 1:
The patent modifies the physical and chemical parameters of starch by controlling its particle size (0.1-100 μm) and using physically modified starch varieties. This parameter optimization allows the starch to effectively bind impurities while minimizing visible residues and gray film formation on hair, resolving the contradiction between cleaning performance and residue-free appearance.
Solution Approach 2:
The patent creates a composite system combining starch with specific anionic polymers and pigments. This composite formulation enhances the cleaning capability of starch while the additional components prevent residue formation and provide styling effects, simultaneously improving cleaning performance and eliminating harmful visual effects.
2Adaptability or versatility
If film formers are added to provide styling effects, then hair texture and volume are improved, but aerosol spray clogging occurs due to clumping
Solution Approach 1:
The patent optimizes the particle size parameters of the particulate carrier (0.1-100 μm) and controls the water content in the aerosol formulation. These parameter adjustments prevent clumping of the particulate material while maintaining film-forming styling effects, thereby preserving aerosol spray functionality without clogging.
Solution Approach 2:
The patent introduces specific anionic polymers as intermediary substances that bridge the starch particulates and prevent their clumping. These polymers act as dispersing agents that maintain the stability of the aerosol mixture, allowing styling effects to be achieved without causing spray nozzle clogging.
3Adaptability or versatility
If pigments are added for temporary hair coloring, then color effect is achieved, but pigment adhesion is insufficient and colors are removed by environmental influences
Solution Approach 1:
The patent creates a composite system where pigments are combined with starch and anionic polymers. This composite formulation enhances pigment adhesion to hair fibers through the binding properties of the anionic polymers and the carrier function of starch, making the temporary coloring resistant to removal by rain, sweat, and abrasion.
Solution Approach 2:
The patent optimizes the concentration and size parameters of pigment particles and their distribution within the starch-particulate matrix. These parameter optimizations ensure sufficient pigment adhesion to hair while maintaining the temporary nature of the coloring, preventing premature removal by environmental factors.
4Productivity
If mixture of particulate carrier materials is used, then cleaning performance is improved, but product complexity and cost increase
Solution Approach 1:
The patent employs starch as a multi-functional particulate carrier that simultaneously provides cleaning action, styling effects, and temporary coloring. By making starch perform multiple functions rather than using separate specialized materials for each function, the patent reduces formulation complexity while maintaining high cleaning performance.
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 achieves high cleaning performance, long-lasting styling effects, and water-resistant temporary hair coloring without visible residues, ensuring the product can be completely emptied from aerosol containers without clogging.
Implementation Method 1
a special anionic polymer which is soluble in anhydrous solvents but need not be neutralized for high film-forming properties
Implementation Method 2
particulate carrier material, which due to its adsorption properties, is able to bind to impurities located on the hair or scalp, such as fats or sebum
Implementation Method 3
the powder suspended in a liquid phase is sprayed onto the hair by employing a foaming agent
Implementation Method 4
the pigments used often do not sufficiently adhere to the fibers and are particularly removed by the action of external environmental influences
Data Source
AI summary
The present disclosure relates to cosmetic compositions for the cleaning of keratinic fibers. An exemplary cosmetic composition includes, based on the total weight of the cosmetic composition, a) a particulate comprising, based on the total weight of the particulate, a1) from about 65 to about 98% by weight of a starch, and a2) from about 1.0 to about 3.0% by weight of a pigment, b) an anionic polymer comprising structural units of the formula (I), the formula (II), and the formula (III):wherein R1, R2 and R4, each independently of one another, stand for a hydrogen atom or a C1-C4 alkyl group, R3 stands for a branched or unbranched, saturated or unsaturated C1-C12 alkyl group, R5 stands for a branched or unbranched, saturated or unsaturated C6-C14 alkyl group, A stands for oxygen, sulfur or an NH group, and c) a foaming agent.