Description

Phenoxy Resin CAS NO 26402-79-9 is a high molecular weight thermoplastic polymer derived from bisphenol A and epichlorohydrin, known for its excellent toughness, clarity, and adhesion properties. This versatile resin serves as a critical performance modifier and binder, enhancing the durability and processing characteristics of various industrial formulations. It is essential for manufacturers in the coatings, adhesives, composites, and specialty plastics industries seeking to improve product performance and reliability.

Application

• Coatings & Inks: Used as a primary film-former or additive in high-performance industrial, marine, and can coatings to improve flexibility, adhesion, and chemical resistance.
• Structural Adhesives & Sealants: Acts as a key toughening agent and binder in epoxy- and polyurethane-based formulations for automotive, aerospace, and construction applications.
• Composite Materials: Employed as a matrix resin or modifier in fiber-reinforced plastics (FRP) and carbon fiber composites to enhance impact strength and interlaminar adhesion.
• Thermoplastic Blends & Alloys: Utilized as a compatibilizer and impact modifier in polymer blends (e.g., with PVC, polycarbonate) to improve mechanical properties and processability.
• Printing & Packaging: Incorporated into overprint varnishes and heat-seal coatings to provide gloss, scuff resistance, and durability.
• Electronics: Serves as an encapsulant or potting compound ingredient, offering good electrical insulation and dimensional stability.

Basic Information

Product Name	Phenoxy Resin
CAS No.	26402-79-9
Molecular Formula	(C21H24O4)n
Molecular Weight	Contact for details (High Polymer)
Synonyms	Poly(hydroxyether of bisphenol A); Phenoxy Polymer; Bisphenol A Epichlorohydrin Copolymer; Polyoxy(2-hydroxytrimethylene)oxycarbonyl-1,4-phenylenecarbonyl; PKHH; PKHJ; PAPHEN; Phenoxy Thermoplastic Resin; Epoxy Resin, Phenoxy Type
EINECS	247-645-4

Quality Control

Our Phenoxy Resin is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in molecular weight, viscosity, color, and thermal properties, meeting the specifications required for high-performance applications. A Certificate of Analysis (COA) detailing key parameters is provided with every shipment to guarantee traceability and compliance with your quality standards.

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 product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent moisture absorption, which can affect processing and performance.

Specification

Item	Specification
Appearance	Colorless to pale yellow pellets or powder
Identification (IR)	Conforms to standard
Glass Transition Temperature (Tg)	85 - 100 °C
Solution Viscosity (40% in MEK)	Contact for details
Hydroxyl Value	5.0 - 7.0 %
Color (Gardner)	≤ 2
Moisture Content	≤ 0.5 %

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