Description

(Acryloxypropyl)Methylsiloxane-Dimethylsiloxane Copolymer is a specialized reactive silicone copolymer engineered to deliver enhanced performance in demanding applications. This product is valued for its unique combination of silicone flexibility and the cross-linking capability of the acryloxypropyl functional group. It is primarily sought after by formulators and manufacturers in the advanced materials sector who require materials with specific surface properties, durability, and reactivity. The compound is identified by the CAS registry number 158061-40-6.

Application

• Pressure-Sensitive Adhesives (PSAs): Used as a reactive modifier to enhance tack, peel strength, and high-temperature performance of silicone-based adhesives.
• Release Coatings: Functions as a key component in curable release liners for labels and tapes, providing controlled release force.
• Silicone Resins & Elastomers: Acts as a cross-linking agent or additive to improve the mechanical properties, adhesion to substrates, and chemical resistance of cured silicone products.
• Surface Modification: Employed as a primer or treatment to modify surface energy and promote adhesion between dissimilar materials, such as plastics and metals.
• Optical & Electronic Encapsulants: Utilized in formulations requiring transparent, durable, and protective coatings with good weatherability for sensitive components.
• Industrial Coatings: Incorporated into high-performance coating systems to impart mar resistance, hydrophobicity, and UV stability.

Basic Information

Product Name	(Acryloxypropyl)Methylsiloxane-Dimethylsiloxane Copolymer
CAS No.	158061-40-6
Molecular Formula	Contact for details
Molecular Weight	Varies by grade (typically 1,000 - 50,000 g/mol)
Synonyms	Acryloxypropylmethylsiloxane-dimethylsiloxane copolymer; Poly[(acryloxypropyl)methylsiloxane-co-dimethylsiloxane]; Acryloxy-functional silicone fluid; Acryloxypropyl modified silicone oil; Reactive silicone copolymer; Silicone acrylate copolymer; (3-Acryloxypropyl)methylsiloxane-dimethylsiloxane copolymer; Acrylated silicone intermediate
EINECS	Contact for details

Quality Control

Our (Acryloxypropyl)Methylsiloxane-Dimethylsiloxane Copolymer is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in key parameters such as viscosity, functional group content, and purity. Certificates of Analysis (COA) documenting these specifications are provided and available upon request 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/59-77°F). Keep away from heat sources and incompatible materials. To prevent premature polymerization, avoid contamination and exposure to free radical initiators. Under these conditions, the product has a typical shelf life of 12 months from the date of manufacture.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Viscosity (25°C)	Grade dependent (e.g., 100 - 10,000 cSt)
Acryloxypropyl Content	Grade dependent (mol%)
Specific Gravity (25°C)	0.95 - 1.05
Refractive Index (25°C)	1.40 - 1.43
Volatile Content	< 1.0%

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