Description

Dimethylsiloxane, Hydroxy-Terminated/Styrene/Butyl Acrylate is a specialized silicone-acrylic hybrid polymer designed for high-performance applications. This compound matters for its unique ability to combine the flexibility, thermal stability, and water repellency of silicones with the toughness, adhesion, and film-forming properties of acrylics. Industries requiring durable, weather-resistant coatings, advanced adhesives, or specialized sealants will find this material essential for their formulations.

Application

• As a key component in the formulation of high-performance, weather-resistant architectural and industrial coatings.
• Used in the production of pressure-sensitive adhesives (PSAs) and sealants with enhanced flexibility and adhesion.
• Serves as a modifier in elastomers and rubber compounds to improve weatherability and low-temperature performance.
• Employed as a release coating agent and in the manufacture of silicone-modified resins.
• Acts as a crucial additive in fiber and textile treatments to impart water repellency and softness.
• Utilized in the formulation of specialty inks and overprint varnishes requiring specific surface properties.

Basic Information

Product Name	Dimethylsiloxane, Hydroxy-Terminated/Styrene/Butyl Acrylate
CAS No.	67923-15-3
Molecular Formula	Contact for details
Molecular Weight	Varies by grade and composition
Synonyms	Silicone Acrylate Hybrid Polymer; Hydroxy-Terminated Polydimethylsiloxane-co-Poly(Styrene/Butyl Acrylate); Silicone-Acrylic Copolymer; PDMS-co-P(St/BA); Acrylic Modified Silicone; Styrene Butyl Acrylate Dimethylsiloxane Copolymer; Silicone Graft Acrylic Polymer; Hydroxyl-Functional Silicone Acrylate
EINECS	Contact for details

Quality Control

Our Dimethylsiloxane, Hydroxy-Terminated/Styrene/Butyl Acrylate is manufactured under a stringent quality management system. Each batch undergoes rigorous testing for critical parameters such as viscosity, hydroxyl value, solids content, and compositional consistency to ensure it meets precise performance specifications. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory compliance needs.

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 material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Clear to slightly hazy viscous liquid
Solids Content	As per grade (e.g., 50-70%)
Viscosity (25°C)	Grade-dependent (cP)
Hydroxyl Value (OH#)	Grade-dependent (mg KOH/g)
Color (Gardner)	≤ 2
Specific Gravity (25°C)	0.95 - 1.05
Residual Monomer	< 0.5%

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