Description

4-Acetoxystyrene Polymer is a specialized functional polymer derived from the monomer 4-acetoxystyrene, with the CAS registry number 24979-78-0. This polymer is valued for its unique chemical structure, which provides a reactive acetoxy group pendant to the polymer backbone, enabling further chemical modifications and cross-linking. It is a critical intermediate and performance material for advanced research and industrial applications in photoresist technology, specialty coatings, and the synthesis of high-value polymeric materials.

Application

• Photoresist Formulations: A key monomer-derived polymer in the production of advanced photoresists for semiconductor manufacturing and microelectronics, particularly in deep-UV and chemical amplification resist systems.
• Polymer Modification & Functionalization: Serves as a reactive precursor polymer, where the acetoxy group can be hydrolyzed to generate poly(4-hydroxystyrene), a vital component in photoresist and lithographic applications.
• Specialty Coatings & Adhesives: Used in the formulation of high-performance, cross-linkable coatings, adhesives, and inks that require specific chemical resistance or tailored surface properties.
• Advanced Material Synthesis: Acts as a building block for creating copolymers and polymer networks with designed thermal, mechanical, and solubility characteristics for research and development.
• Lithographic Materials: Employed in the development of next-generation lithography materials for precise patterning in nanofabrication processes.

Basic Information

Product Name	4-Acetoxystyrene Polymer
CAS No.	24979-78-0
Molecular Formula	(C10H10O2)n
Molecular Weight	Varies (Polymer)
Synonyms	Poly(4-acetoxystyrene); Poly(p-acetoxystyrene); Poly(4-vinylphenyl acetate); 4-Vinylphenyl acetate polymer; p-Acetoxystyrene polymer; PAcS; Poly(4-acetoxy styrene); PVAcOSt
EINECS	Contact for details

Quality Control

Our 4-Acetoxystyrene Polymer is manufactured under controlled conditions to ensure batch-to-batch consistency and high purity. Quality is verified through a suite of analytical techniques including Gel Permeation Chromatography (GPC) for molecular weight distribution, spectroscopic methods for structural confirmation, and impurity profiling. A Certificate of Analysis (COA) detailing specific lot results for key parameters such as molecular weight, polydispersity index (PDI), and residual monomer content is provided with every shipment.

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). This material is light-sensitive (store away from light) and may be hygroscopic (moisture-sensitive). Keep away from strong acids, bases, and oxidizing agents. For long-term storage, consider using an inert atmosphere to preserve polymer integrity.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Identification (IR)	Conforms to structure
Weight-Average Molecular Weight (Mw)	5,000 - 50,000 Da (Typical, custom available)
Polydispersity Index (PDI)	< 2.5
Residual Monomer (HPLC)	< 0.5%
Acetoxy Content	Conforms to theoretical
Loss on Drying	< 1.0%

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