Description

Siloxanes And Silicones, Di-Me, 3-Hydroxypropyl Group-Terminated, Reaction Products With 2-Oxepanone is a specialized organosilicon copolymer, specifically a polydimethylsiloxane (PDMS) derivative terminated with hydroxypropyl groups and reacted with caprolactone (2-oxepanone). This unique structure combines the flexibility, thermal stability, and hydrophobicity of silicones with the polarity and reactivity of polycaprolactone segments. It is engineered to serve as a high-performance additive, compatibilizer, or reactive intermediate in advanced material formulations. Key industries that utilize this specialty chemical include polymer science, advanced coatings, and personal care, where it enhances properties like surface modification, adhesion, and elasticity.

Application

• Polymer Modification & Compatibilization: Acts as a reactive plasticizer or compatibilizer in polyurethane, polyester, and silicone blends to improve flexibility, impact resistance, and phase stability.
• Advanced Coatings & Sealants: Used in formulating high-performance, weather-resistant coatings, adhesives, and sealants that require enhanced surface wetting, adhesion to low-energy substrates, and durability.
• Personal Care & Cosmetic Ingredients: Serves as a conditioning agent, emollient, or film-former in skincare and haircare products, providing a silky, non-greasy feel and improved product spreadability.
• Biomedical & Pharmaceutical Materials: Employed in the development of controlled-release drug delivery systems, bioadhesives, or biocompatible coatings for medical devices due to its tunable hydrophilicity and degradation profile.
• Fiber & Textile Treatment: Imparts softness, lubricity, and water repellency to synthetic and natural fibers during finishing processes.
• Specialty Elastomers: Functions as a key intermediate or additive in the synthesis of silicone-organic hybrid elastomers with tailored mechanical and thermal properties.

Basic Information

Product Name	Siloxanes And Silicones, Di-Me, 3-Hydroxypropyl Group-Terminated, Reaction Products With 2-Oxepanone
CAS No.	162567-82-0
Molecular Formula	Contact for details
Molecular Weight	Variable (Polymer)
Synonyms	Poly[(dimethylsiloxane)-co-[3-(2-hydroxypropoxy)propyl]methylsiloxane]-graft-polycaprolactone; Hydroxypropyl-terminated PDMS-polycaprolactone copolymer; Silicone-polycaprolactone hybrid polymer; Polycaprolactone-grafted aminopropyl terminated polydimethylsiloxane; PDMS-PCL copolymer; Organosiloxane copolymer with caprolactone; 3-Hydroxypropyl group-terminated dimethylsiloxane, reaction products with ε-caprolactone
EINECS	Contact for details

Quality Control

Our production of this specialty copolymer adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through parameters such as hydroxyl value, silicone content, caprolactone block length, molecular weight distribution (GPC), and viscosity. Certificates of Analysis (COA) detailing these specifications are provided with each shipment. We support compliance with relevant frameworks including REACH for global market access.

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). This product is hygroscopic (moisture-sensitive). To prevent moisture uptake and potential hydrolysis, ensure containers are sealed immediately after use and consider storage under a dry inert atmosphere for long-term keeping.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Hydroxyl Value (mg KOH/g)	Contact for details
Viscosity @ 25°C (cSt)	Contact for details
Water Content (KF)	< 0.5%
Specific Gravity @ 25°C	Contact for details

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