Description

Butyl 2-Methyl-2-Propenoate Polymer With 2-Hydroxyethyl 2-Methyl-2-Propenoate, Methyl 2-Methyl-2-Propenoate And 2-Methylpropyl 2-Methyl-2-Propenoate CAS NO 70729-76-9 is a specialized acrylic copolymer designed to deliver a precise balance of properties for advanced industrial formulations. This multi-monomer polymer is engineered to provide enhanced performance characteristics such as film formation, adhesion, and chemical resistance. It is a critical raw material for manufacturers in the coatings, adhesives, and specialty chemical sectors seeking reliable and consistent polymer performance.

Application

• Industrial and Protective Coatings: Used as a key film-forming agent in solvent-based and high-solid coatings, providing durability, gloss, and weather resistance.
• Pressure-Sensitive Adhesives (PSAs): Serves as a base polymer to achieve tailored tack, peel strength, and shear resistance for labels and tapes.
• Printing Inks: Imparts binding properties, pigment wetting, and rub resistance in flexographic and gravure inks.
• Textile and Leather Finishes: Applied as a coating or binder to enhance surface properties, water repellency, and hand feel.
• Sealants and Caulks: Contributes to flexibility, adhesion, and longevity in construction and automotive sealant formulations.
• Specialty Binders: Acts as a high-performance binder in non-woven fabrics, fiber composites, and abrasive products.

Basic Information

Product Name	Butyl 2-Methyl-2-Propenoate Polymer With 2-Hydroxyethyl 2-Methyl-2-Propenoate, Methyl 2-Methyl-2-Propenoate And 2-Methylpropyl 2-Methyl-2-Propenoate
CAS No.	70729-76-9
Molecular Formula	(C8H14O2.C5H8O2.C4H6O2.C7H12O2)x
Molecular Weight	Varies (Polymer)
Synonyms	Acrylic Copolymer; Butyl Methacrylate / Hydroxyethyl Methacrylate / Methyl Methacrylate / Isobutyl Methacrylate Copolymer; 2-Propenoic acid, 2-methyl-, butyl ester, polymer with 2-hydroxyethyl 2-methyl-2-propenoate, methyl 2-methyl-2-propenoate and 2-methylpropyl 2-methyl-2-propenoate; Methacrylic Acid Copolymer; Poly(butyl methacrylate-co-hydroxyethyl methacrylate-co-methyl methacrylate-co-isobutyl methacrylate); BMA/HEMA/MMA/IBMA Copolymer; Acrylic Terpolymer; Light-sensitive (store away from light)
EINECS	Contact for details

Quality Control

Our production of this acrylic copolymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as molecular weight distribution, monomer residue, glass transition temperature (Tg), and solution viscosity are rigorously monitored. Certificates of Analysis (COA) detailing specific lot specifications are 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 using under an inert atmosphere to prevent oxidation and maintain polymer integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
Identification (IR)	Conforms
Solid Content (%)	Contact for details
Viscosity (cps)	Contact for details
Glass Transition Temp (Tg)	Contact for details
Acid Value (mg KOH/g)	≤ 1.0
Residual Monomer	≤ 0.5% (by GC)
Color (Gardner)	≤ 2

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