191 resin is DCPD type unsaturated polyester resin.
The resin has the characteristics of low shrinkage , high strength and good overall performance.
Property/Unit | Value | TM |
Appearance | light yellow transparent liquid | |
Viscosity(at 25ºC)/Pa.s | 0.30-0.60 | GB/T 7193.1-2008 |
Gel Time(at 25ºC)/min | 5-10 | GB/T 7193.6-2008 |
Solids Content/% | 60-68 | GB/T 7193-2008 |
Thermal Stability(at 80ºC)/H | >24 | GB/T 7193.5-2008 |

- Tolerates heavy design loads without causing failure due to resin damage therefore can work with large weight-bearing equipment with confidence
- Excellent elongation and toughness provides FRP products with better impact resistance and less cracking due to cyclic temperature,pressure fluctuations, and mechanical shocks providing a safety factor against damage during process upsets or during shipping installation.
- High solid content, with excellent mechanical strength and excellent toughness, the composite products made from it shows excellent long-term heat resistance, and high dynamic load bearing performance;
- Excellent toughness, crack resistance, higher heat resistance temperature, excellent strength retention at high temperature.
191 resin is suitable for fabricating FRP storage tanks, vessels, ducts, and on-site maintenance projects,particularly in chemical processing and pulp and paper operations.REL 411resin is designed for ease of fabrication using hand lay-up, spray-up, filament winding,compression molding and resin transfer molding techniques, pultrusion and molded grating applications.An alternate viscosity, optimized for some vacuum infusion processes, is available for customized process in viscosity and gel time of our resins.











Q: Can I Request a Sample of Unsaturated Polyester Resin?
A: Yes,we can provide 10kg of resin as a free sample.
Q: Do you have OEM/ODM service?
A: Yes, we are highly flexible in offering OEM/ODM services.
Q: What is The Product Lead Time?
A: 10 days.
Q:What's Shelf Life of Unsaturated Polyester Resin ?
A: Normally 8 months.
Q: Can I Customize the Formulation of Unsaturated Polyester Resin for My Project?
A: Yes, absolutely. We understand that different projects may have unique requirements. Our R & D department is well-equipped to handle custom formulations based on your specific needs. You can provide us with the details of your project, including any specific characteristics or performance criteria you are looking for, and our experts will work on tailoring a formulation that meets your requirements.
Q: How Do I Choose the Right Unsaturated Polyester Resin for My Application?
A: We would provide guidance on selecting the appropriate UPR based on different project requirements.
Q: What Certifications and Quality Standards Does Your Unsaturated Polyester Resin Meet?
A: Our Unsaturated Polyester Resin meets CCS, RoHS, REACH, EMS, and QMS certifications and quality standards.
Q: What is Your Company's International Transportation Form?
A: For samples, we offer Delivery Duty Paid (DDP) services for most of the countries. This means that we handle the delivery process, including the payment of taxes, and you won't be required to manage customs clearance. For bulk orders, we normally transported by sea or land. Our commitment is to ensure the secure and efficient delivery of our products to your specified destination.
