Marine Resin Solutions
Built for the Ocean. Engineered for Durability.
Premium anti-osmosis Isophthalic and Vinyl Ester resins for boat building and repair.
Protecting Your Reputation on the Water
In the marine industry, osmotic blistering is the enemy of longevity. Using the right resin system is critical to preventing hull degradation and ensuring structural integrity over decades of service.
Changyuan New Materials offers a complete composite system for boat builders: from high-gloss ISO-NPG Gel Coats to tough Vinyl Ester Skin Coats and structural Isophthalic Resins.
Our formulations are rigorously tested for water absorption and boiling water resistance to meet international marine standards.
Project Consultation
Building a new mold or repairing a transom? Ask our marine experts.
Talk to Marine SpecialistsMarine Applications
Boat Hulls & Decks
Primary construction of fiberglass fishing boats, yachts, and patrol vessels.
Osmosis Repair
Vinyl ester solutions for repairing blistered hulls and preventing recurrence.
Marine Components
Hatches, consoles, and radar arches requiring high cosmetic finish.
Marine Resin Portfolio
Marine Grade Isophthalic Resin
Premium isophthalic polyester resin formulated for superior water resistance and blister protection. The standard choice for quality boat hulls and decks.
- High hydrolysis resistance
- Low water absorption
- Excellent wetting
Marine Vinyl Ester Resin
The ultimate barrier coat resin. Provides exceptional resistance to osmosis and osmotic blistering. Used as a skin coat behind the gel coat for maximum durability.
- Superior osmosis resistance
- High elongation
- Toughness
Marine Gel Coats
ISO-NPG based gel coats offering outstanding UV stability, gloss retention, and protection against marine environments.
- UV resistant
- High gloss retention
- Crack resistant
Marine Grade Properties
Typical cured properties for our marine systems
| Property | Test Standard | Standard Marine Iso | High Perf. VE Barrier |
|---|---|---|---|
| Water Absorption (28 days) | ISO 62 | <20 mg | <15 mg |
| Heat Deflection Temp (HDT) | ISO 75 | >85°C | >105°C |
| Tensile Elongation | ISO 527 | 3.5 - 4.5% | 5.0 - 6.0% |
| Flexural Strength | ISO 178 | 120 MPa | 140 MPa |
Download Marine Resin Guide
Guidelines for preventing osmosis and selecting the right resin for your hull.
Marine Resin FAQ
Why use vinyl ester resin for boat hulls?
Vinyl ester resin provides superior resistance to hydrolysis compared to polyester. It is often used as a 'skin coat' directly behind the gel coat to create an impermeable barrier against osmotic blistering.
Do your resins meet Lloyd's Register standards?
Yes, our marine grade isophthalic and vinyl ester resins are formulated to meet or exceed Lloyd's Register approval standards for craft construction.
What is the shelf life of marine resin?
Standard shelf life is 6 months when stored below 25°C in a dark, dry place. We can add specific inhibitors for tropical climates to extend stability.
Build Better Boats
Partner with a resin manufacturer that understands the science of the sea.
Talk to Marine Specialists