Description

2-Propenoic Acid, 2-Methyl-, Butyl Ester, Polymer With Methyl 2-Methyl-2-Propenoate And 3-(Trimethoxysilyl)Propyl 2-Methyl-2-Propenoate is a specialized silane-modified acrylic copolymer designed to provide enhanced adhesion and durability. This advanced polymer is engineered to bridge organic and inorganic interfaces, offering superior performance in demanding coating and adhesive formulations. It is essential for manufacturers in the coatings, sealants, and specialty plastics industries seeking to improve product longevity and substrate bonding.

Application

• Adhesion Promoter in Coatings: Used in primers and topcoats for metals, plastics, and glass to dramatically improve coating adhesion and corrosion resistance.
• Crosslinking Agent for Sealants & Adhesives: Enhances the cohesive strength, flexibility, and moisture resistance of silicone-modified and acrylic-based sealants and adhesives.
• Surface Modifier for Fillers & Pigments: Acts as a coupling agent to improve the dispersion and bonding of inorganic fillers (e.g., silica, calcium carbonate) in polymer matrices.
• Fiberglass Sizing Component: Incorporated into sizing formulations for fiberglass to improve resin wettability and the mechanical properties of composites.
• Waterproofing Additive: Imparts water repellency and durability to construction materials, concrete sealers, and masonry coatings.
• Automotive & Industrial Coatings: Provides excellent weatherability and stone chip resistance in OEM and refinish coatings for automotive and industrial applications.

Basic Information

Product Name	2-Propenoic Acid, 2-Methyl-, Butyl Ester, Polymer With Methyl 2-Methyl-2-Propenoate And 3-(Trimethoxysilyl)Propyl 2-Methyl-2-Propenoate
CAS No.	81503-76-6
Molecular Formula	(C8H14O2.C5H8O2.C10H20O5Si)x
Molecular Weight	Polymer - varies by grade
Synonyms	Silane-modified acrylic copolymer; Butyl methacrylate / Methyl methacrylate / 3-(Trimethoxysilyl)propyl methacrylate terpolymer; Methacrylic acid, butyl ester, polymer with methyl methacrylate and 3-(trimethoxysilyl)propyl methacrylate; Acrylic silane copolymer; Adhesion promoter resin; SCA (Silane Coupling Agent) modified acrylic polymer; MAPS (Methacryloxypropyltrimethoxysilane) copolymer; Terpolymer of butyl methacrylate, methyl methacrylate, and γ-MAPS.
EINECS	Contact for details

Quality Control

Our production of this silane-modified acrylic copolymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as monomer conversion, molecular weight distribution, silane content, and viscosity are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing specific assay, physical properties, and performance tests is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. This product is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C/59-77°F). Keep the container tightly sealed when not in use to prevent moisture absorption and premature condensation/crosslinking. Store away from incompatible materials.

Specification

Item	Specification
Appearance	Clear to slightly hazy viscous liquid
Color (Gardner)	≤ 3
Solid Content (%)	50 - 70 (varies by grade)
Viscosity (cPs @ 25°C)	500 - 5000 (varies by grade)
Specific Gravity (25°C)	0.95 - 1.05
Acid Value (mg KOH/g)	≤ 5.0
Silane Content (%)	1.0 - 10.0 (varies by grade)
Solvent	Aromatic hydrocarbons / Esters / Alcohols

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