Isophthalic Polyester Resin
High-Performance Iso Resin with Superior Chemical & Heat Resistance
Premium isophthalic unsaturated polyester resin engineered for demanding applications requiring exceptional corrosion resistance, high-temperature performance, and long-term durability.
What is Isophthalic Resin?
Isophthalic polyester resin (commonly known as iso resin) is an advanced type of unsaturated polyester resin manufactured using isophthalic acid as the primary dibasic acid component. This chemical modification results in a resin with significantly enhanced performance characteristics compared to standard orthophthalic resins.
As a leading isophthalic unsaturated polyester resin manufacturer, Changyuan New Materials produces a comprehensive range of iso resins designed for applications where superior chemical resistance, elevated temperature performance, and exceptional durability are critical requirements.
Our isophthalic resins are widely used in corrosion-resistant equipment, marine vessels, chemical storage tanks, water treatment facilities, and high-performance composite structures across various industries worldwide.
Why Choose Isophthalic Resin?
Superior performance characteristics that make iso resin the preferred choice for demanding applications
Superior Chemical Resistance
Excellent resistance to acids, alkalis, and corrosive chemicals, making it ideal for harsh industrial environments.
High Heat Resistance
Outstanding heat deflection temperature (HDT ≥90-120°C), suitable for high-temperature applications.
Enhanced Mechanical Properties
Superior tensile and flexural strength compared to orthophthalic resins, ensuring long-lasting durability.
Excellent Water Resistance
Low water absorption and superior hydrolytic stability, perfect for marine and wet environments.
Weather Resistance
Outstanding UV resistance and weatherability, maintaining performance in outdoor applications.
Versatile Applications
Suitable for a wide range of applications from chemical tanks to marine vessels and pultrusion profiles.
Isophthalic Resin Applications
Our iso resins power critical applications across diverse industries
Our Isophthalic Resin Product Range
Comprehensive portfolio of iso resins for every application
General Purpose Iso Resins
High-temperature and corrosion-resistant resins for general FRP applications
ZY199
HDT ≥120°C, Acid Value 11-19, Excellent heat and chemical resistance
Filament Winding Iso Resins
Specialized resins for winding pipes, tanks, and food-grade applications
ZY9201
HDT ≥90°C, Liner layer for pipes and tanks
ZY9518
HDT ≥90°C, Food-grade liner applications
Corrosion-Resistant Iso Resins
Premium resins for demanding chemical environments
ZY199
HDT ≥120°C, Superior chemical and temperature resistance
Pultrusion Iso Resins
High-performance resins for continuous pultrusion processes
ZY7021
HDT ≥90°C, Good mechanical strength and toughness
ZY7022
HDT ≥80°C, Optimized for pultrusion
ZY7028
HDT ≥80°C, High reactivity
Molding Iso Resins (SMC/BMC)
Advanced resins for compression molding applications
ZY1598
HDT ≥120°C, Iso NPG type for automotive and electrical
Gel Coat Iso Resins
Premium gel coats for superior surface finish and protection
ZY303
General purpose isophthalic gel coat
ZY102
Water and weather resistant, Iso NPG type
ZY Mold 1
Specialty resin for mold making
Low Shrink Additives
Isophthalic-based additives for dimensional control
ZY5015
Isophthalic Adipic Acid type, excellent shrink control
Artificial Stone Iso Resins
High-quality resins for faux granite and marble products
ZY8088
Iso NPG type, high water resistance and hardness
Isophthalic vs Orthophthalic Resin
Understanding the performance advantages of iso resin
| Property | Isophthalic Resin | Orthophthalic Resin |
|---|---|---|
| Chemical Resistance | Excellent | Good |
| Heat Deflection Temp (HDT) | 90-120°C | 60-80°C |
| Water Resistance | Superior | Good |
| Mechanical Properties | Higher Strength | Standard |
| Weather Resistance | Excellent | Good |
| Cost | Higher | Lower |
| Best For | Demanding Applications | General Purpose |
Frequently Asked Questions
Common questions about isophthalic polyester resin
What is Isophthalic Polyester Resin?
Isophthalic polyester resin (iso resin) is a type of unsaturated polyester resin made using isophthalic acid instead of orthophthalic acid. This modification provides superior chemical resistance, higher heat deflection temperature, and better mechanical properties compared to standard orthophthalic resins.
What are the advantages of Isophthalic Resin over Orthophthalic Resin?
Isophthalic resins offer several key advantages: 1) Superior chemical resistance to acids and alkalis, 2) Higher heat deflection temperature (typically 20-40°C higher), 3) Better water resistance and hydrolytic stability, 4) Enhanced mechanical properties, and 5) Improved weatherability. These make iso resins ideal for demanding applications where ortho resins may not perform adequately.
What applications are best suited for Isophthalic Resin?
Isophthalic resins excel in: chemical storage tanks and pipes, marine vessels and boat building, corrosion-resistant equipment, water treatment facilities, food-grade containers, high-temperature FRP products, pultrusion profiles, and premium gel coats. Any application requiring superior chemical resistance, heat resistance, or water resistance benefits from iso resins.
How does Isophthalic Resin perform in marine environments?
Isophthalic resins are excellent for marine applications due to their superior water resistance, low water absorption, and excellent hydrolytic stability. They resist osmotic blistering better than orthophthalic resins and maintain their mechanical properties even after prolonged exposure to seawater.
What is the typical HDT (Heat Deflection Temperature) of Isophthalic Resins?
Our isophthalic resins typically have HDT values ranging from 90°C to 120°C, significantly higher than standard orthophthalic resins (60-80°C). This makes them suitable for applications exposed to elevated temperatures or requiring dimensional stability at higher temperatures.
Can Isophthalic Resins be used for food-grade applications?
Yes, certain isophthalic resins in our portfolio (such as ZY9518) are specifically formulated for food-grade applications. These resins meet stringent safety requirements and are ideal for food-grade liners in winding pipes and tanks.
Need High-Performance Isophthalic Resin?
Contact our technical experts to discuss your specific requirements and get a customized solution for your application.