Description

2-Propenoic Acid, 2-Methyl-, Polymer With Methyl 2-Methyl-2-Propenoate, Ammonium Salt is a water-soluble, anionic copolymer of methyl methacrylate and methacrylic acid, supplied as its ammonium salt. This polymer is valued for its excellent film-forming, binding, and thickening properties in aqueous systems. It serves as a critical functional additive in industries requiring controlled release, surface modification, and rheology control.

Application

• Pharmaceutical Coatings: Used as an enteric or sustained-release coating polymer for tablets and pellets, providing pH-dependent solubility.
• Adhesives and Binders: Acts as a high-performance binder in construction materials, paper coatings, and non-woven fabrics.
• Personal Care & Cosmetics: Functions as a film former and viscosity modifier in hair styling products, sunscreens, and skin care formulations.
• Textile Processing: Employed as a finishing agent and thickener in printing pastes to enhance fabric hand feel and durability.
• Paints & Coatings: Serves as a dispersant and rheology modifier in water-based industrial and architectural paints.
• Agriculture: Utilized in the formulation of controlled-release fertilizers and pesticide coatings to improve efficacy and reduce environmental impact.

Basic Information

Product Name	2-Propenoic Acid, 2-Methyl-, Polymer With Methyl 2-Methyl-2-Propenoate, Ammonium Salt
CAS No.	60474-81-9
Molecular Formula	(C5H8O2.C4H6O2)x.xH3N
Molecular Weight	Varies (Polymer)
Synonyms	Ammonium Methacrylate/Methyl Methacrylate Copolymer; Methacrylic Acid - Methyl Methacrylate Copolymer (1:1) Ammonium Salt; Eudragit L 100-55; Poly(Methacrylic Acid-co-Methyl Methacrylate) Ammonium Salt; MMA/MA Ammonium Salt Copolymer; Ammonium Methacrylate Methyl Methacrylate Copolymer; Anionic Methacrylic Copolymer; CAS 60474-81-9
EINECS	Contact for details

Quality Control

Our production of this pharmaceutical-grade polymer adheres to cGMP guidelines, ensuring batch-to-batch consistency for critical applications like enteric coatings. Quality is verified against stringent in-house specifications, including tests for identity, assay, residual monomers, and viscosity. A comprehensive Certificate of Analysis (COA) is provided with each shipment, and compliance with relevant ICH guidelines is maintained.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after initial use to prevent moisture absorption, which can affect flow properties and performance.

Specification

Item	Specification
Appearance	White to off-white free-flowing powder
Identification (IR)	Conforms
Assay (as methacrylic acid units)	46.0 - 50.6 %
Viscosity (1% in water)	3 - 10 mPa·s
Loss on Drying	≤ 5.0 %
Residual Monomers (Methacrylic Acid)	≤ 0.1 %
Residual Monomers (Methyl Methacrylate)	≤ 0.1 %
pH (1% aqueous dispersion)	5.0 - 7.0

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