Description

Siloxanes And Silicones, Me Vinyl, Hydroxy-Terminated is a reactive, vinyl-functional silicone polymer with terminal hydroxyl groups, offering a unique combination of crosslinking capability and chain extension. This dual functionality is critical for formulating advanced silicone-based materials with tailored mechanical and surface properties. It is an essential intermediate for manufacturers in the silicone rubber, release coatings, and specialty adhesives industries seeking to enhance product performance and processing characteristics.

Application

• As a key reactive intermediate in the production of high-performance Addition Cure Liquid Silicone Rubber (LSR) and High Consistency Rubber (HCR).
• In the formulation of silicone release coatings for labels, tapes, and packaging films, where it improves cure speed and anchorage.
• As a chain extender and crosslinker in the synthesis of modified silicone resins and fluids for industrial applications.
• For manufacturing specialty pressure-sensitive adhesives (PSAs) and sealants requiring enhanced adhesion and flexibility.
• In the production of silicone potting compounds and encapsulants for electronics, providing environmental protection.
• As a reactive component in UV-curable silicone systems for coatings and inks.
• For creating custom silicone surfactants and additives used in polyurethane foam and other polymer systems.

Basic Information

Product Name	Siloxanes And Silicones, Me Vinyl, Hydroxy-Terminated
CAS No.	68083-20-5
Molecular Formula	Contact for details
Molecular Weight	Varies by grade and chain length
Synonyms	Hydroxy-Terminated Methylvinyl Siloxane; Vinylmethylsiloxane-Dimethylsiloxane Copolymer, Hydroxy-Terminated; Hydroxy-Functional Methylvinyl Polysiloxane; Vinylmethyl Hydroxy-Terminated Silicone Fluid; Poly(methylvinylsiloxane), hydroxy-terminated; Hydroxy-Terminated Vinylmethylsiloxane Homopolymer; Reactive Vinyl Silicone Polymer; Hydroxy-Terminated VMQ Fluid
EINECS	Contact for details

Quality Control

Our Siloxanes And Silicones, Me Vinyl, Hydroxy-Terminated is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including verification of vinyl content, hydroxyl value, viscosity, and purity. Certificates of Analysis (COA) documenting these parameters are available for every shipment to support your quality assurance protocols.

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). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed when not in use to prevent moisture absorption, which can affect reactivity. Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Viscosity (25°C)	Specification available upon request
Vinyl Content (mmol/g)	Specification available upon request
Hydroxyl Value (mg KOH/g)	Specification available upon request
Specific Gravity (25°C)	~0.97 - 1.00
Refractive Index (n20D)	~1.40 - 1.41
Volatile Content	≤ 1.0%

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