Description

Vinyl Terminated Polydimethylsiloxane is a reactive silicone polymer featuring vinyl functional groups at the polymer chain ends. This structure is critical for enabling cross-linking reactions, making it a fundamental building block in the production of high-performance silicone elastomers and resins. It is essential for manufacturers requiring materials with excellent thermal stability, flexibility, and chemical resistance. Key industries that rely on this polymer include silicone rubber production, release coatings, adhesives, and advanced material composites.

Application

• Silicone Rubber (HTV & RTV): Acts as a primary reactive intermediate in the manufacture of high-temperature vulcanizing (HTV) and room-temperature vulcanizing (RTV) silicone rubbers.
• Release Coatings: Used as a key component in solvent-based and solventless release coatings for labels, tapes, and food packaging.
• Adhesives & Sealants: Serves as a base polymer in platinum-cure and peroxide-cure silicone adhesive and sealant formulations.
• Silicone Resins & Composites: Employed in the synthesis of silicone resins for coatings and as a modifier in composite materials to enhance properties.
• Personal Care: Utilized in the production of specialty silicone fluids and elastomers for cosmetic and personal care applications.
• Industrial Molding: A critical raw material for creating molds and mold-making materials due to its excellent release properties and durability.

Basic Information

Product Name	Vinyl Terminated Polydimethylsiloxane
CAS No.	68952-00-1
Molecular Formula	(C2H6OSi)n•C4H8Si
Molecular Weight	Variable (based on chain length 'n')
Synonyms	Vinyl-terminated PDMS; Poly(dimethylsiloxane), vinyl-terminated; Vinylmethylsiloxane-dimethylsiloxane copolymer, vinyl terminated; Dimethylvinylsiloxy terminated polydimethylsiloxane; Vinyl silicone fluid; Vinyl gum; Reactive vinyl silicone polymer; VQM resin
EINECS	Contact for details

Quality Control

Our Vinyl Terminated Polydimethylsiloxane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in key parameters such as vinyl content, viscosity, and molecular weight distribution. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing the specific results for your quality assurance needs. Our production adheres to industry best practices, supporting your requirements for reliable and high-purity raw materials.

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 heat, sparks, and open flame. Incompatible with strong oxidizing agents. For long-term storage, consider storing under an inert atmosphere (e.g., nitrogen) to maintain optimal reactivity.

Specification

Item	Specification
Appearance	Colorless to pale yellow transparent liquid
Identification (IR)	Complies
Viscosity (25°C)	Specified grade (e.g., 1,000 - 100,000 mPa·s)
Vinyl Content (mmol/g)	0.05 - 0.20 (Grade dependent)
Volatile Matter	≤ 1.0 %
Specific Gravity (25°C)	0.96 - 0.98
Refractive Index (n25D)	1.400 - 1.410

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