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Product Line: Electronic Chemicals

4-tert-Butoxystyrene

CAS 95418-58-9

Molecular structure of 4-tert-Butoxystyrene

CAS · 95418-58-9

01

Product Overview

4-tert-Butoxystyrene is a high-purity battery-materials supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.

02

Product Specifications

Appearance: Colorless liquid
Purity (GC): 99% min
Water: 300 ppm max
Foreign matter: Qualified
Polymerization Inhibitor: 150 ≤ TBC ≤ 250 ppm
Solvent residue: 1000 ppm max
Refractive index (25℃): 1.51000 to 1.53000
03

Applications

1. Functional Monomer in Polymer Synthesis

● Used as a monomer in radical polymerization to produce homopolymers or copolymers with tailored functionality.

● The tert-butoxy group imparts hydrophobicity, bulk, and steric protection, affecting polymer chain packing and solubility.

2. Photoresist and Electronics Materials

● Plays a role in the synthesis of photoresist resins used in microelectronics and semiconductor manufacturing.

● Upon acid-catalyzed deprotection, the tert-butoxy group can be removed to generate a hydroxystyrene moiety, useful in patternable polymers.

3. Specialty Coatings and Adhesives

● Enhances the durability, thermal stability, and resistance of coatings.

● Often used in UV- or thermal-curable systems, where its reactivity can be precisely controlled.

4. Block Copolymers and Advanced Materials

● Forms part of block copolymer architectures (e.g., with polystyrene or polyacrylates), enabling phase separation behavior for nanostructured materials.

● Useful in applications such as membranes, drug delivery vehicles, and responsive materials.

04

Benefits

✅ Chemical Tunability

● The tert-butoxy group is a protecting group that can be selectively removed under acidic conditions, allowing post-polymerization modification of the polymer backbone.

✅ Enhanced Thermal and Mechanical Properties

● Polymers derived from 4-tert-butoxystyrene tend to have higher glass transition temperatures (Tg) and improved mechanical strength, making them suitable for high-performance applications.

✅ Improved Solubility and Processability

● The bulky tert-butyl group enhances solubility in organic solvents, which facilitates polymer processing, blending, and film formation.

✅ Ideal for Lithography and Etching Applications

● The ability to undergo acid-catalyzed deprotection makes it valuable in positive-tone photoresists where selective solubility is required for fine pattern development.

05

Conclusion

4-tert-Butoxystyrene丨CAS 95418-58-9 is a valuable monomer for creating advanced polymer systems with tailored chemical functionality. Its applications span from microelectronics and coatings to smart materials, where its reactive profile and protective tert-butoxy group offer distinct design flexibility.

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