Description

Styrene/Butyl Acrylate-Methacrylate/Methacrylic Acid CAS NO 75923-40-9 is a specialized polymer composition, specifically a multi-component copolymer, designed to deliver a unique balance of properties for advanced material formulations. This compound matters for its ability to impart tailored characteristics such as film formation, adhesion, and chemical resistance to the final product. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for specialty polymer production.

Application

• Primary binder or film-forming agent in water-based industrial and architectural coatings.
• Key component in the formulation of pressure-sensitive adhesives (PSAs) and laminating adhesives.
• Used in textile and leather finishing chemicals to provide durable, flexible coatings.
• Base polymer for paper coating applications to enhance gloss, printability, and barrier properties.
• Modifier in construction materials, including caulks, sealants, and cement additives.
• Raw material for producing specialty polymers with specific glass transition temperatures and mechanical properties.

Basic Information

Product Name	Styrene/Butyl Acrylate-Methacrylate/Methacrylic Acid
CAS No.	75923-40-9
Molecular Formula	(C8H8·C7H12O2·C4H6O2)x
Molecular Weight	Varies (Polymer)
Synonyms	Styrene Butyl Acrylate Methacrylic Acid Copolymer; Acrylic-Styrene-Acrylate Copolymer; ASA Copolymer; Butyl Acrylate-Styrene-Methacrylic Acid Terpolymer; SBM Copolymer; Acrylic Modified Styrene Polymer; Poly(Styrene-co-Butyl Acrylate-co-Methacrylic Acid); CAS 75923-40-9
EINECS	Contact for details

Quality Control

Our Styrene/Butyl Acrylate-Methacrylate/Methacrylic Acid copolymer is produced under a stringent quality management system. Each batch undergoes rigorous testing for critical parameters including monomer content, solids percentage, viscosity, pH, and glass transition temperature (Tg) to ensure consistent performance and batch-to-batch uniformity. Certificates of Analysis (COA) detailing these specifications are available upon request.

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). Keep away from heat sources and open flame. For long-term stability, avoid freezing and prolonged exposure to high humidity.

Specification

Item	Specification
Appearance	Milky white emulsion or solid
Solids Content	45 - 55 %
pH	7.0 - 9.0
Viscosity	500 - 3000 cps
Glass Transition Temp (Tg)	10 - 30 °C
Residual Monomer	< 0.5 %
Particle Size	0.1 - 0.3 µm

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