Overview
ZC-191 is a general-purpose unsaturated polyester resin manufactured from phthalic anhydride, maleic anhydride, and standard diols, dissolved in the cross-linking monomer styrene, part of the Polylite product line in our resin range. It offers good strength and rigidity, fast post cure, and excellent mechanical properties, and is supplied with supply chain resource support for formulators sourcing a medium-viscosity resin for ordinary glass-reinforced FRP products.
Specification
| Appearance | Light yellow transparent viscous liquid |
| Acid Value | 19-25 mgKOH/g (GB/T 2895-2008) |
| Viscosity, 25℃ | 0.30-0.60 Pa.s (GB/T 7193-2008) |
| Solid Content | 59-65% (GB/T 7193-2008) |
| Thermal Stability, 80℃ | ≥24 h (GB/T 7193-2008) |
| Gelation Time, 25℃ | 6-18 min (GB/T 7193-2008) |
Applications of ZC-191 in Glass-Reinforced FRP Production
This resin is registered for use in hand lay-up and spray-up processes, making it suitable for ordinary glass-reinforced products across automotive and transportation components, building and construction elements, marine vessels, petrochemical equipment, and home renovation applications. Its medium viscosity and medium reaction activity give formulators a workable window for wet-out and lamination in open-mold processes.
Why the Phthalic Unsaturated Polyester Chemistry Matters
Because this resin is built from phthalic anhydride, maleic anhydride, and standard diols rather than isophthalic-only backbones, it is formulated to deliver good strength and rigidity along with fast post cure once laminated. The acid value range of 19-25 mgKOH/g and solid content of 59-65% give formulators reference points for evaluating batch-to-batch consistency before scaling a lamination run.
Why Sourcing Consistency Matters for Buyers
Because viscosity, gelation time, and thermal stability directly affect processability and finished-part mechanical properties, buyers should confirm current specifications for this resin against the latest technical data sheet before scheduling a production run. A supplier that consistently delivers this resin within its stated viscosity and gelation time range reduces the need to re-qualify a hand lay-up or spray-up recipe with every new batch.
This is particularly relevant for automotive, marine, and construction manufacturers, where gelation time and mechanical properties are directly tied to lamination throughput and part quality. Buyers should confirm current batch documentation against the latest technical data sheet before finalizing a production schedule.
What to Consider When Sourcing ZC-191
Buyers evaluating ZC-191 for the first time should confirm that its gelation time (6-18 min) and thermal stability (≥24 h at 80℃) match their lamination line’s cycle time and process temperature requirements, and should review whether hand lay-up or spray-up matches their production method. Requesting the current certificate of analysis alongside the technical data sheet is a practical way to confirm that a given batch matches the specifications listed above.
Packaging, storage temperature requirements, and shelf life should also be confirmed directly with the supplier, since these factors affect how this resin performs once it reaches a production facility. Buyers sourcing this resin for time-sensitive production schedules should discuss lead time and logistics requirements before finalizing an order.
General Handling and Storage Guidance
As with other unsaturated polyester resins, this product should be stored in accordance with the supplier’s technical data sheet, typically in a cool, well-ventilated area away from direct sunlight and sources of heat or ignition, since elevated storage temperatures can affect the resin’s viscosity and gelation characteristics over time. Personnel handling this material should follow the handling procedures specified in the safety data sheet.
Buyers should request and review the current safety data sheet for this resin prior to receipt, and confirm that on-site storage conditions are compatible with the supplier’s recommended shelf life and temperature range. Proper inventory rotation helps maintain the viscosity and mechanical performance described above.
Where to Source This Product
Thousands Chemicals supplies ZC-191 and related resin products through our digital B2B marketplace, with supply chain resource support for formulators sourcing unsaturated polyester resins for automotive, marine, construction, and petrochemical FRP applications. Material testing methods referenced for this resin, including acid value, viscosity, solid content, and thermal stability, are benchmarked against recognized international testing practices published by ASTM International. Our team can help confirm packaging, lead times, and technical documentation for your target application and order volume.
Documentation We Can Provide
For qualified buyers, we can provide the safety data sheet and technical data sheet for the specific batch of this resin being quoted. Specifications listed on this page reflect the manufacturer’s published values; buyers should confirm current documentation before finalizing a purchase order.
FAQ
What is ZC-191 used for?
It is a general-purpose unsaturated polyester resin used in hand lay-up and spray-up processes for ordinary glass-reinforced products in automotive, construction, marine, and petrochemical applications.
What is the viscosity of ZC-191?
ZC-191 has a viscosity of 0.30-0.60 Pa.s at 25℃ (GB/T 7193-2008).
What is the gelation time of ZC-191?
ZC-191 has a gelation time of 6-18 minutes at 25℃ (GB/T 7193-2008).
Can you provide technical documentation and bulk pricing for ZC-191?
Yes, technical data sheets and SDS documentation are available on request, and our team can provide bulk pricing and lead times based on your target volume and delivery location.
Get a Quote for ZC-191
Contact our team for pricing, documentation, and lead time on ZC-191. Our sourcing specialists can help confirm whether this unsaturated polyester resin matches your process requirements before you place an order.
