Orthophthalic Polyester Resin
Cost-Effective Ortho Resin for Versatile FRP Applications
High-quality orthophthalic unsaturated polyester resin offering excellent balance of performance and affordability for diverse industrial applications worldwide.
What is Orthophthalic Resin?
Orthophthalic polyester resin (commonly known as ortho resin) is the most widely used type of unsaturated polyester resin, manufactured using orthophthalic acid (phthalic anhydride) as the primary dibasic acid component. It represents the industry standard for general-purpose FRP applications, offering an excellent balance of performance, processability, and cost-effectiveness.
As a leading orthophthalic unsaturated polyester resin manufacturer, Changyuan New Materials produces a comprehensive range of ortho resins designed for diverse applications including marine vessels, automotive components, construction materials, sanitary ware, translucent panels, artificial stone, and countless other FRP products.
Our orthophthalic resins are trusted by manufacturers worldwide for their consistent quality, reliable performance, and excellent value proposition. With decades of proven track record, ortho resins continue to be the backbone of the global FRP industry.
Why Choose Orthophthalic Resin?
Proven performance characteristics that make ortho resin the industry standard
Cost-Effective Solution
Excellent balance of performance and affordability, making it ideal for a wide range of general-purpose applications.
Easy Processing
Good workability with excellent fiber wetting properties, suitable for various fabrication methods including hand lay-up, spray-up, and molding.
Versatile Applications
Suitable for diverse industries from marine and automotive to construction and consumer goods.
Good Mechanical Properties
Reliable tensile and flexural strength for standard FRP applications, with excellent toughness and impact resistance.
Stable Quality
Consistent batch-to-batch performance with predictable curing characteristics and reliable processing windows.
Wide Product Range
Comprehensive portfolio covering general purpose, marine, translucent, molding, and specialty applications.
Orthophthalic Resin Applications
Our ortho resins power diverse applications across multiple industries
Our Orthophthalic Resin Product Range
Comprehensive portfolio of ortho resins for every application
General Purpose Ortho Resins
Versatile resins for standard FRP applications with excellent cost-performance ratio
ZY191DA
HDT ≥70°C, Pre-promoted, excellent general purpose performance
ZY191
HDT ≥60°C, Reliable all-around resin
ZY196
HDT ≥60°C, Good mechanical properties
ZYMT Mannequin
Specialty resin for clothing mannequins, fast curing
ZY189
Cold-resistant, suitable for yacht applications
Filament Winding Ortho Resins
Optimized for winding pipes, tanks, and structural applications
ZY9003
HDT ≥60°C, Structural layer for pipes and tanks
ZY9006
HDT ≥70°C, High-strength jacking pipes
ZY9007
HDT ≥75°C, Enhanced structural properties
ZY9516
HDT ≥60°C, Food-grade liner applications
ZY9519
HDT ≥60°C, Structural layer applications
Marine Ortho Resins
Specially formulated for boat building and marine environments
ZY189
HDT 60°C, Excellent fiberglass wetting, weather resistant
ZY189 Thixotropic
Pre-promoted, thixotropic for vertical surfaces
Pultrusion Ortho Resins
High-reactivity resins for continuous pultrusion processes
ZY7015
HDT ≥75°C, General pultruded products
ZY7016
HDT ≥80°C, Good mechanical strength and toughness
ZY7036
HDT ≥80°C, Optimized for pultrusion
ZY7039
HDT ≥80°C, Enhanced performance
ZY7050
HDT ≥80°C, High toughness and heat resistance
Molding Ortho Resins (SMC/BMC)
Engineered for compression molding with stable thickening
ZY1591
HDT ≥100°C, Stable thickening, good mechanical properties
ZY1592
HDT ≥100°C, General purpose SMC/BMC
ZY1595
HDT ≥100°C, Ortho NPG, Class A surfaces
ZY1596
HDT ≥100°C, Automotive and electrical applications
ZY1597
HDT ≥120°C, High-performance molding
Gel Coat Ortho Resins
Premium gel coats for superior surface finish and protection
ZY34
General purpose orthophthalic gel coat
ZY959
Thixotropic, pre-promoted, good adhesion to acrylic
ZY192 Acrylic
Bonding layer for acrylic sheets and FRP
Translucent Ortho Resins
High clarity resins for skylight panels and lighting applications
ZY6180
HDT ≥57°C, Weather-resistant, translucent
ZY6072
Pre-promoted, good light transmission
ZY6606
Pre-promoted, water and weather resistant
ZY6601
Ortho NPG, for lighting panels
ZY6103
HDT ≥80°C, Translucent, weather-resistant
ZY624
HDT ≥75°C, Good light transmission
Coating Ortho Resins
High-gloss resins for marble and furniture surface coatings
ZY8399A
Ortho NPG, good flexibility, temperature resistant
ZY8086
High hardness and gloss, excellent leveling
ZY8086S
High hardness, gloss, and fullness
ZY8087-1
Pre-promoted, for marble base coating
Artificial Stone Ortho Resins
Specialized resins for faux granite, marble, and decorative products
ZY8085
For faux granite, crafts, marble products
ZY8089
Ortho MMA, acrylic modified
ZY8090
Ortho MMA, enhanced properties
ZY8680
For crystal marble and crafts
ZY8682
Faux granite and marble
ZY8685
Artificial stone products
ZY8087
Adhesive for artificial stone
ZY8693
Faux granite and marble products
Button & Craft Ortho Resins
High clarity resins for buttons, crafts, and decorative applications
ZY1186
Pre-promoted, casting type craft resin
ZY1188
Sheet casting resin for buttons
ZY1108
High transparency, excellent for pearl sheets
ZYT196
General craft resin
ZY622
Pre-promoted, casting type
ZY625
Pre-promoted, for mid-to-high-end crafts
Furniture Coating Ortho Resins
Polyester resins for high-quality furniture finishes
ZY601
DCPD, high gloss, good sandability
ZY602
DCPD, excellent leveling and gloss
ZY602-1
DCPD, enhanced properties
ZY603
Refined DCPD, high gloss
ZY604
DCPD, good sandability
ZY-605
DCPD, high toughness
ZY609
DCPD Modified, for high-end furniture
Specialty Ortho Resins
Specialized resins for RTM, putty, and other niche applications
ZYRTM
Pre-promoted, suitable for RTM process
ZY7001
Pre-promoted, excellent wetting for RTM
ZY-7002
Thixotropic, for wind turbine blades
ZY1995
For automotive putty products
Orthophthalic vs Isophthalic Resin
Understanding when to choose ortho resin for your application
| Property | Orthophthalic Resin | Isophthalic Resin |
|---|---|---|
| Cost | Lower - Excellent Value | Higher |
| Chemical Resistance | Good | Excellent |
| Heat Deflection Temp (HDT) | 60-80°C (up to 100°C for NPG types) | 90-120°C |
| Water Resistance | Good | Superior |
| Processing | Easy - Excellent Workability | Good |
| Availability | Widely Available | Available |
| Best For | General Purpose Applications | Demanding Applications |
Frequently Asked Questions
Common questions about orthophthalic polyester resin
What is Orthophthalic Polyester Resin?
Orthophthalic polyester resin (ortho resin) is the most common and widely used type of unsaturated polyester resin, manufactured using orthophthalic acid (also called phthalic anhydride) as the primary dibasic acid. It offers an excellent balance of performance and cost-effectiveness, making it ideal for general-purpose FRP applications across diverse industries.
What are the main advantages of Orthophthalic Resin?
Orthophthalic resins offer several key advantages: 1) Cost-effective solution with excellent value, 2) Easy processing with good workability, 3) Versatile applications across many industries, 4) Reliable mechanical properties for standard applications, 5) Wide availability and established supply chains, and 6) Proven track record with decades of successful use in FRP manufacturing.
When should I choose Orthophthalic Resin over Isophthalic Resin?
Choose orthophthalic resin when: 1) Cost is a primary consideration, 2) Standard chemical and heat resistance is sufficient, 3) Applications don't require extreme environmental resistance, 4) General-purpose mechanical properties meet requirements, and 5) You need a proven, reliable solution for common FRP applications. For demanding applications requiring superior chemical resistance, higher heat deflection, or enhanced water resistance, consider isophthalic resin.
What applications are best suited for Orthophthalic Resin?
Orthophthalic resins excel in: boat building and marine vessels (non-critical areas), automotive components, sanitary ware and bathtubs, water tanks, skylights and translucent panels, artificial stone and marble, furniture coatings, buttons and crafts, general FRP products, pultrusion profiles, SMC/BMC molding, and gel coats for standard applications.
Can Orthophthalic Resins be used for marine applications?
Yes, orthophthalic resins are widely used in marine applications, particularly for recreational boats and non-critical structural areas. Our marine-grade ortho resins (like ZY189) are specifically formulated with enhanced water resistance and weatherability. However, for below-waterline applications or high-performance vessels, isophthalic or vinyl ester resins may be more suitable.
What is the typical HDT (Heat Deflection Temperature) of Orthophthalic Resins?
Our orthophthalic resins typically have HDT values ranging from 60°C to 100°C, depending on the specific formulation. General-purpose resins typically range from 60-80°C, while specialty ortho resins (such as NPG-modified types) can achieve HDT values up to 100-120°C. This makes them suitable for most standard applications not exposed to extreme temperatures.
Need Cost-Effective Orthophthalic Resin?
Contact our technical experts to discuss your specific requirements and get a customized solution for your application.