Description

Triacontylmethylsiloxane, Dimethylsiloxane Copolymer is a specialized organosilicon polymer engineered to provide unique surface-modifying and release properties. This high-performance silicone copolymer is valued for its ability to impart exceptional lubricity, hydrophobicity, and thermal stability to formulations and surfaces. It is a critical material for manufacturers in the personal care, coatings, plastics, and industrial release agent sectors seeking to enhance product performance and processing efficiency.

Application

• Personal Care & Cosmetics: Acts as a premium conditioning agent and emollient in hair care products (shampoos, conditioners) and skin creams, providing a non-greasy, silky feel and improved shine.
• Industrial Release Agents & Molding: Used as a key component in release coatings for rubber, plastics, and composite materials, facilitating clean demolding and reducing surface defects.
• Surface Treatments & Coatings: Imparts durable water repellency (DWR), anti-fouling, and lubricious properties to textiles, paper, metals, and optical fibers.
• Plastics & Polymer Additives: Functions as an internal and external lubricant and processing aid, improving flow, reducing friction, and preventing sticking during extrusion and injection molding.
• Paint & Ink Additives: Enhances surface slip, mar resistance, and leveling in coatings, while also helping to control foam and improve substrate wetting.
• Adhesive & Sealant Modifiers: Modifies surface energy to improve adhesion or, conversely, to create non-stick or easy-clean surfaces in pressure-sensitive adhesives and sealants.

Basic Information

Product Name	Triacontylmethylsiloxane, Dimethylsiloxane Copolymer
CAS No.	175779-55-2
Molecular Formula	Contact for details
Molecular Weight	Varies by grade and chain length
Synonyms	Poly(dimethylsiloxane-co-methyltriacontylsiloxane); Dimethylsiloxane-methyltriacontylsiloxane copolymer; Methyltriacontylsiloxane-dimethylsiloxane copolymer; Silicone copolymer with C30 alkyl chain; C30 Alkyl Modified Silicone; Long-chain alkyl modified silicone oil; High molecular weight alkyl silicone fluid
EINECS	Contact for details

Quality Control

Our Triacontylmethylsiloxane, Dimethylsiloxane Copolymer is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including verification of viscosity, specific gravity, refractive index, and functional group content. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. Under these conditions, the product is stable for an extended period.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous liquid
Viscosity (25°C)	Specification available upon request
Specific Gravity (25°C)	0.85 - 1.00
Refractive Index (n20D)	1.400 - 1.460
Assay (Active Content)	> 95%
Volatile Matter	< 2.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.