Description

Poly(Dimethylsiloxane), Distearate Terminated is a specialized organosilicon polymer featuring terminal stearate groups, which impart unique hydrophobic and lubricating properties. This chemical modification is critical for enhancing compatibility with organic matrices and improving surface activity in demanding formulations. It is essential for manufacturers in the personal care, coatings, and polymer processing industries seeking advanced silicone-based additives for performance enhancement and process improvement.

Application

• Personal Care & Cosmetics: Acts as a premium emollient, conditioning agent, and gloss enhancer in hair care products, skin creams, and color cosmetics.
• Industrial Lubricants & Release Agents: Serves as a high-performance internal and external lubricant and mold release agent in plastics, rubber, and die-casting operations.
• Coatings & Inks: Functions as a flow and leveling agent, slip additive, and mar-resistance improver in solvent-based and high-solid coatings, paints, and printing inks.
• Polymer Additives: Used as a processing aid and compatibilizer to reduce viscosity, improve filler dispersion, and enhance surface properties in engineered plastics and composites.
• Textile & Fiber Treatment: Imparts durable water repellency, softness, and lubricity to synthetic and natural fibers and fabrics.
• Adhesives & Sealants: Modifies rheology, improves wetting, and enhances the hydrophobic character of various adhesive and sealant formulations.

Basic Information

Product Name	Poly(Dimethylsiloxane), Distearate Terminated
CAS No.	130169-63-0
Molecular Formula	Contact for details
Molecular Weight	Varies by chain length (n)
Synonyms	Distearate-Terminated Polydimethylsiloxane; Stearic Acid-Terminated PDMS; PDMS-Distearate; Silicone Distearate; Poly(dimethylsiloxane) Distearate; Dimethylsiloxane-Distearate Copolymer; α,ω-Distearoxy Polydimethylsiloxane; Polydimethylsiloxane with Stearic Acid End Groups
EINECS	Contact for details

Quality Control

Our Poly(Dimethylsiloxane), Distearate Terminated is produced under a stringent quality management system. Each batch is tested to ensure consistent performance, including analysis of viscosity, hydroxyl value, and functional group content. Certificates of Analysis (COA) documenting key specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong alkalis and incompatible materials such as strong oxidizing agents. Under recommended storage conditions, the product is stable for at least 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Clear viscous liquid to semi-solid
Color (Gardner)	≤ 3
Viscosity @ 25°C	100 - 10,000 cSt (Typical)
Specific Gravity @ 25°C	0.96 - 0.98
Hydroxyl Value (mg KOH/g)	< 5.0
Acid Value (mg KOH/g)	< 1.0
Water Content (KF)	< 0.1%
Identification (IR)	Conforms

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