Synolite 1967-G-3 is a DCPD-based unsaturated polyester resin developed for the VIP (vacuum infusion process) route, combining low shrinkage and low styrene emission with a finished laminate that shows low fiber print and low residual smell. Thousands Technology sources this resin for composite fabricators who need consistent impregnation performance across thick and thin laminate sections.
Synolite 1967-G-3 Key Properties
Per the manufacturer product specification, this resin has a solids content (IR drying) of 64-67%, an acid value of 16.5-23.5 mgKOH/g, and a viscosity at 23°C of 260-300 mPa.s. Reactivity data, measured with 3.0 g of Butanox M50 added to 100 g of resin, shows a gel time (25°C to 35°C) of 42-47 minutes, a peak time of 52-66 minutes, and a peak exotherm temperature of 120-150°C. Chemically, it is classified as a medium viscous unsaturated DCPD-based polyester resin. Background on the dicyclopentadiene chemistry used in this resin family can be reviewed on PubChem.
This medium reactive formulation gives a relatively low peak exotherm, which supports good through cure in both thick and thin laminate sections while limiting print-through on the finished surface.
Key Features
- Low shrinkage and low styrene emission during processing
- Very good fibre wetting and impregnation properties
- Low fiber print and reduced residual smell in the finished laminate
- Good through cure across thick and thin laminate sections
Main Applications of Synolite 1967-G-3
This DCPD resin is recommended for injection applications with foil as a top-mould to produce high performance constructional laminates, and it can meet Det Norske Veritas grade 2 requirements for boat building. It is compatible with all commonly used types of glass fiber reinforcement, and formulators often pair it with a suitable organic peroxide curing system to match the required gel and cure profile for a given mould.
Boat builders and marine laminators sourcing this resin for VIP infusion typically request a documented specification sheet before committing to a production batch, and maintain a qualified secondary supply channel to protect lamination schedules from single-source disruptions.
Storage and Handling Considerations
This resin should be stored in a dark and dry place at temperatures between 5°C and 30°C. Shelf life is reduced when the resin is stored at higher temperatures, and its properties may change during extended storage. Because shelf life is significantly reduced when the styrene-containing resin is exposed to light, it should be kept in dark, 100% light-tight containers only. Full handling and storage guidance is provided in the product SDS, which Thousands Technology can supply alongside the TDS on request.
Frequently Asked Questions About Synolite 1967-G-3
- What is Synolite 1967-G-3 used for? It is used as a DCPD-based unsaturated polyester resin for VIP infusion and injection moulding of constructional laminates, including boat hulls meeting DNV grade 2.
- What is the viscosity of this resin? The viscosity at 23°C is 260-300 mPa.s, per the manufacturer specification.
- How long does this resin take to gel and cure? With 3.0 g of Butanox M50 per 100 g of resin, gel time is 42-47 minutes and peak time is 52-66 minutes, with a peak exotherm of 120-150°C.
- How should it be stored? It should be kept in dark, 100% light-tight containers between 5°C and 30°C to protect shelf life.
- Can Thousands Technology supply this material in bulk? Yes, Thousands Technology offers supply chain resource support for bulk orders of Synolite 1967-G-3, with standard industrial packaging and TDS/SDS available on request.
Composite fabricators evaluating this resin for an upcoming infusion or injection moulding run are welcome to contact Thousands Technology for current availability, packaging options, and documentation to support their sourcing decision.
