Description

Ethenylbenzene, Butyl 2-Methyl-2-Propenoate, Methyl 2-Methyl-2-Propenoate, (1-Methylethenyl) Benzene Polymer is a specialized terpolymer designed to deliver a precise balance of properties from its constituent monomers. This engineered material is crucial for formulators seeking to fine-tune performance characteristics such as adhesion, flexibility, and chemical resistance in demanding environments. It is primarily utilized by manufacturers in the adhesives, coatings, sealants, and specialty plastics industries where advanced polymer performance is required.

Application

• Pressure-Sensitive Adhesives (PSAs): Used as a key polymer backbone to provide tack, peel strength, and cohesive balance for labels, tapes, and graphic films.
• Industrial and Protective Coatings: Imparts durability, weatherability, and adhesion to metal, plastic, and concrete substrates.
• Sealants and Caulks: Enhances flexibility, elongation, and long-term adhesion in construction and automotive sealing applications.
• Plastic Modifiers and Impact Improvers: Incorporated into rigid polymer matrices to improve toughness and impact resistance.
• Binder for Non-Wovens and Textiles: Serves as a durable binding agent in fiber-based products.
• Printing Inks: Used in formulations requiring strong adhesion to various substrates and good pigment wetting.

Basic Information

Item	Detail
Product Name	Ethenylbenzene, Butyl 2-Methyl-2-Propenoate, Methyl 2-Methyl-2-Propenoate, (1-Methylethenyl) Benzene Polymer
CAS No.	73275-62-4
Molecular Formula	(C8H8·C8H14O2·C5H8O2·C9H10)x
Molecular Weight	Polymer - varies by grade
Synonyms	Styrene Butyl Methacrylate Methyl Methacrylate α-Methylstyrene Terpolymer; SBMM Terpolymer; Styrene/Butyl Methacrylate/Methyl Methacrylate/α-Methylstyrene Copolymer; Acrylic-Styrene Terpolymer; 2-Propenoic acid, 2-methyl-, butyl ester, polymer with ethenylbenzene, methyl 2-methyl-2-propenoate and 1-methyl-1-ethenylbenzene; Butyl methacrylate-methyl methacrylate-styrene-α-methylstyrene polymer
EINECS	Contact for details

Quality Control

Our terpolymer products are manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against critical parameters including monomer residue, molecular weight distribution, glass transition temperature (Tg), and solids content. A comprehensive Certificate of Analysis (COA) detailing these specifications is provided with every shipment 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). Keep away from heat sources and open flame. For long-term storage, consider an inert atmosphere to maintain polymer stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow pellets or solid
Identification (IR)	Complies
Assay (as polymer solids)	≥ 99.0%
Residual Monomers (GC)	≤ 0.5% total
Glass Transition Temperature (Tg)	40 - 80 °C (Grade dependent)
Molecular Weight (GPC)	Contact for details
Volatile Content	≤ 1.0%

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