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| Catalog Number | CI-HC-0101 |
| Product Name | Amodimethicone |
| CAS | 68554-54-1 / 24938-91-5 / 112-02-7 |
| Description | Milky, white silicone emulsion (amino-modifed polydimethylsiloxane emulsion) offering excellent conditioning & softening properties. |
| Solubility | Soluble in water, soluble in alcohol |
| Appearance | White, opaque liquid |
| Application | Hair & skin conditioning products as shampoos, conditioners, creams, lotions. |
| Storage | Store in a closed container at a dry place at room temperature |
| Composition | Amodimethicone, trideceth-12, cetrimonium chloride, water |
| Features And Benefits | Partial water dispersible silicone emulsion for use in hair conditioners, hair spritzes and styling productsProtects the hair shaft, moisturizes hair, gives softness and shineAdds a silky feel to skin care creams and reduces greasiness |
| GMO | GMO-free (does not contain plant-derived components) |
| HS Code | 3402130000 |
| INCI | Amodimethicone, trideceth-12, cetrimonium chloride |
| Manufacture | Amodimethicone is an amine-functionalized silicone made from dimethicone where the methyl groups along the backbone are replaced with alkylamine groups which become positively charged in aqueous solutions yielding an cationic polymer. Dimethicone is made from dimethyldichlorosilane which is produced by powdered silicon (silicone dioxide) and methyl chloride. Dimethyldichlorosilane is then hydrolyzed to give a hydrolysate of polysiloxanes. In a polymerization reaction with water the polysiloxanes are then polymerized to linear silicone polymers with different chain length (dimethicones). |
| Preservation | Trideceth-12, cetrimonium chloride |
| Purity Grade | No purity grade applicable |
| Raw Material Source | Dimethyldichlorosilane and water |
| Uses | Typical use level is 1-15%, add to water phase of formulas. Can also be mixed into emulsions after the temperature dropped to 50°C/125°F. For external use only. |
Lingxiao Guo, et al. Phosphorus, Sulfur, and Silicon and the Related Elements, 2019, 195(5), 392-398.
High amine value aminopropyl polysiloxane (APSO) was designed and synthesized. APSO was then aminated with glucono-δ-lactone (GL) to obtain sugar-modified amino-terminated amodimethicone (GLAP).
· Synthesis of GLAP Surfactant
GLAP surfactant was produced through a two-step polymerization process of APSO to achieve a higher conversion rate. Initially, the APMS-H prepolymer was derived via the hydrolysis of APMS using KOH as a catalyst. Subsequently, APSO was synthesized by polymerizing APMS-H, D4, and MM in a molar ratio of 2.6:1:1.
The amphiphilic polysiloxane GLAP was created by reacting APSO with GL in methanol as the solvent, maintaining a 1:1 molar ratio of lactone to amine for 2 hours at 65°C. GLAP was isolated after the methanol evaporation.
· Properties of GLAP Surfactant
GLAP exhibits a low critical aggregation concentration (CAC) and low surface tension at that concentration (γCAC). It forms spherical aggregates in solution, with spontaneous micelle formation and adsorption at the air-water interface. Additionally, GLAP demonstrates good solubility and excellent wetting properties.
Miyamoto, Takumi, et al. Journal of Surfactants and Detergents, 2021, 24(3), 501-510.
Amodimethicone is an abbreviation for amine-functionalized silicones, in which some side chain groups on the siloxane backbone are replaced by various alkylamine groups (-R-NH2). This work discusses the relationship between the type of amino-modified silicone oil, surface conditioning film formation, and tribological properties, providing a reference for designing shampoo (Sp) formulations with excellent disentanglement properties.
· Shampoo Formulation with Amodimethicones
The base formulation was identical for both shampoo formulations (Sp), but each contained a different amino-modified silicone as a conditioning agent. Sp A features bisstearyl amodimethicone (BCA), which is insoluble in water, while Sp B incorporates a copolymer of bisisobutyl polyethylene glycol (PEG)-14/amodimethicone (BIPA), which is water-soluble. The pH level of both formulations was approximately 5-6.
· Comparison of Formulation Performance
Sp A demonstrated poor detangling capabilities due to its use of water-insoluble silicone, whereas Sp B exhibited excellent detangling performance with its water-soluble silicone. The tribological interactions between taut hair fibers treated with diluted solutions of each shampoo were markedly different; hair treated with Sp A displayed a stick-slip motion, while hair treated with Sp B experienced smooth sliding. This smooth sliding, which is ideal for detangling, results from a dual-layer structure of the conditioning film on the hair. The positively charged, water-soluble amino-modified silicone quickly adsorbs onto the negatively charged hair surface, followed by the physical adsorption of coacervates onto the silicone layer.
What is the purpose of using Amodimethicone in cosmetic products?
Amodimethicone is commonly used in hair care products as a conditioning agent and to improve hair manageability.
How does Amodimethicone differ from traditional silicones in hair care products?
Amodimethicone is a water-soluble silicone that provides more targeted conditioning benefits without the buildup often associated with traditional silicones.
What are some potential benefits of using Amodimethicone in hair care products?
Some potential benefits of using Amodimethicone include improved detangling, reduced frizz, enhanced shine, and heat protection.
Can Amodimethicone be used in leave-in hair treatments?
Yes, Amodimethicone is often used in leave-in hair treatments to provide long-lasting conditioning benefits.
Is Amodimethicone safe to use in cosmetic products?
Amodimethicone is considered safe for use in cosmetic products when used in accordance with regulations and industry guidelines.
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