Description

Vinyl Dimethicone is a specialized organosilicon polymer featuring reactive vinyl groups along its dimethylsiloxane backbone. This unique structure is critical for enabling cross-linking and permanent bonding in advanced silicone formulations, providing enhanced durability and performance. It is an essential raw material for manufacturers in the personal care, industrial release coatings, and high-performance elastomer sectors seeking to create products with superior film-forming, water-repellent, and long-lasting properties.

Application

• Personal Care & Cosmetics: A key ingredient in long-wear makeup (mascara, eyeliner, foundation), sunscreens, and hair conditioning products, where it provides water resistance, smooth application, and improved wear.
• Silicone Rubber & Elastomers: Acts as a cross-linking agent in heat-cured (HCR) and liquid silicone rubber (LSR) for producing seals, gaskets, medical devices, and keyboard pads with enhanced tensile strength and elasticity.
• Release Coatings: Used in the formulation of silicone-based release liners for pressure-sensitive labels, tapes, and adhesive films, ensuring clean, controlled release.
• Textile & Fiber Treatment: Imparts durable water repellency (DWR) and softness to fabrics, nonwovens, and technical textiles.
• Adhesives & Sealants: Serves as a reactive modifier to improve adhesion, flexibility, and environmental resistance in specialty silicone adhesives and sealants.
• Plastics & Composites: Used as a surface modifier or internal additive to enhance processing, reduce friction, and improve the surface properties of engineered plastics.

Basic Information

Product Name	Vinyl Dimethicone
CAS No.	53529-60-5
Molecular Formula	(C2H6OSi)n·(C4H10OSi)m
Molecular Weight	Varies by degree of polymerization
Synonyms	Vinylmethylpolysiloxane; Vinyl Terminated Polydimethylsiloxane; Poly(dimethylsiloxane-co-methylvinylsiloxane); Dimethicone, vinyl-terminated; Vinyl silicone fluid; Vinyl PDMS; Vinyldimethylsiloxane Homopolymer; Divinyl-terminated PDMS
EINECS	Contact for details

Quality Control

Our Vinyl Dimethicone is manufactured under strict quality management systems. Each batch is tested against rigorous in-house specifications to ensure consistent performance, including parameters for vinyl content, viscosity, and purity. Certificates of Analysis (COA) documenting these results are provided with every shipment to support your quality assurance and regulatory compliance needs.

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 and sources of heat or ignition to maintain product integrity.

Specification

Item	Specification
Appearance	Clear, colorless viscous liquid
Identification (IR)	Conforms to standard
Viscosity (25°C)	Specified grade (cSt)
Vinyl Content (mmol/g)	Specified grade
Specific Gravity (25°C)	0.96 - 0.98
Refractive Index (25°C)	1.400 - 1.410
Volatile Matter	< 1.0%

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