Description

Chloromethyl Terminated Polydimethylsiloxane is a specialized organosilicon compound featuring reactive chloromethyl end groups on a polydimethylsiloxane (PDMS) backbone. This unique structure makes it a valuable reactive intermediate and functional modifier for creating advanced silicone-based materials with enhanced properties. It is primarily used by formulators and researchers in the silicone elastomer, adhesive, and specialty coating industries to introduce cross-linking sites or to modify surface characteristics.

Application

• Reactive Intermediate for Silicone Copolymers: Serves as a key building block for synthesizing block and graft copolymers with organic polymers.
• Cross-linking Agent for Silicone Elastomers: Provides reactive sites for curing and network formation in heat-curable silicone rubber systems (HCR).
• Surface Modification Agent: Used to functionalize inorganic fillers (e.g., silica) or other substrates to improve compatibility within silicone matrices.
• Adhesive and Sealant Formulations: Imparts enhanced adhesion to various substrates through its reactive end groups in specialty sealants.
• Precursor for Further Functionalization: The chloromethyl group can be further reacted to introduce other functionalities like amines or quaternary ammonium salts.
• Research & Development: Employed in academic and industrial R&D for developing novel silicone-based materials with tailored properties.

Basic Information

Product Name	Chloromethyl Terminated Polydimethylsiloxane
CAS No.	158465-60-2
Molecular Formula	CnH2n+2Cl2On-2Sin (n varies by chain length)
Molecular Weight	Varies by degree of polymerization. Contact for details.
Synonyms	Chloromethyl-Functional Polydimethylsiloxane; α,ω-Bis(chloromethyl)polydimethylsiloxane; Chloromethyl PDMS; PDMS, chloromethyl-terminated; Dimethylsiloxane, chloromethyl-terminated; Siloxanes and Silicones, di-Me, chloromethyl-terminated; Reactive Chloromethyl Silicone Fluid
EINECS	Contact for details.

Quality Control

Our Chloromethyl Terminated Polydimethylsiloxane is manufactured under controlled conditions to ensure batch-to-batch consistency. Each lot undergoes rigorous quality testing, including analysis of functional group content, viscosity, and purity. Certificates of Analysis (COA) detailing key 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 away from incompatible materials such as strong acids and organic solvents. Recommended storage temperature is 15-25°C. The product is moisture-sensitive; keep containers tightly sealed when not in use.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Viscosity (25°C)	Specification available upon request
Chloromethyl Group Content	Specification available upon request
Purity (HPLC/GPC)	> 95%
Water Content	< 0.1%

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