Marine Grade Resin for Boat Building

Marine Polyester Resin
LC-1930

Premium marine resin and marine polyester resin for boat building. Pre-accelerated, pre-thixotropic marine grade resin with excellent water resistance and superior glass fiber wetting properties. The ideal resin for boats and marine applications.

Why LC-1930 is the Choice for Marine Excellence

In the demanding world of marine construction, standard resins are simply not enough. Lechi LC-1930 Marine Resin is a specialized, high-performance unsaturated polyester resin engineered specifically for the harsh environments encountered by sea vessels. Formulated with a Neopentyl Glycol (NPG) isophthalic backbone, it provides an exceptional moisture barrier that prevents osmosis and hydrolysis. Its pre-accelerated and thixotropic nature ensures it stays in place on vertical boat hulls while providing the fast fiber wet-out required for efficient boat building operations. From luxury yachts to high-speed fishing boats, LC-1930 provides the structural heart that lasts a lifetime.

Maximum resistance to osmotic blistering
Optimized vertical hang (thixotropic) for hull molding
Reduced styrene emissions during application
High impact and fatigue resistance for heavy seas
Certified for Category A marine construction

Technical Specifications

Product Model:LC-1930
Appearance:Light transparent
Viscosity:260-400 mPa·s
Gel Time:22-38 min
Solid Content:54-60%
Storage Life:3 months (uninitiated, dark place, 20°C)

Core Characteristics

Good water resistancehigh strengthexcellent glass fiber wetting

Quick Stats

Product Models:1
Chemistry:UPR

Application Fields

Fiberglass boatswater tanks

Marine Grade Engineering

Why boat builders worldwide trust the LC-1930 system

Superior Osmosis Barrier

Ultra-low water absorption technology creates a dense polymer matrix that effectively blocks water molecules, preventing hull blistering and core degradation.

Salt & UV Fortification

Includes a robust package of light stabilizers and corrosion inhibitors to protect against the combined assault of intense maritime sun and saltwater.

Precision Laminating Logic

Engineered for the hand lay-up and spray-up professional, with a viscosity profile that promotes instant fiber saturation and eliminates trapped air.

Processing Compatibility

Manufacturing Process Compatibility

Our Marine Resins series is meticulously formulated to integrate seamlessly into your existing manufacturing infrastructure, from high-precision molding to heavy-duty winding.

Filament Winding
Pultrusion
SMC/BMC Molding
RTM/Infusion
Viscosity
Optimized
Flow control
Gel Time
Adjustable
Work life
Shrinkage
Low Rate
Precision
Storage
3-6 Months
Shelf life

Marine Resins Specifications

Complete technical data for our marine resins lineup. Select the model that best fits your industrial requirement.

ModelChemical TypeViscosity (mPa·s)Gel Time (min)Molding ProcessApplication FieldCharacteristics
LC-1930
Pre-accelerated Orthophthalic
260-400
22-38
Hand lay-up, Spray-up
Fiberglass boats, water tanks
Good water resistance, high strength, excellent glass fiber wetting
Brand Strength

Why Global Industry Leaders
Choose Lechi Composites

1

Quality Assurance

Every batch undergoes rigorous testing in our ISO-certified facilities to ensure consistent mechanical properties.

2

R&D Innovation

Our technical team continuously refines chemical formulations to meet evolving international standards.

3

Reliable Supply Chain

Global production capacity of 600,000 tons provides stability for your large-scale projects.

LECHI
20+
Years Excellence

"Global Quality.
Professional Service."

Marine Resin Technical Support

Frequently asked questions about our marine resins

Do I need to add hardener to LC-1930?
Yes, LC-1930 is pre-accelerated but requires MEKP (Methyl Ethyl Ketone Peroxide) catalyst to initiate the curing process. Typically 1.5% - 2.0% by weight depending on temperature.
Is LC-1930 suitable for hull repair below the waterline?
Absolutely. Due to its NPG Isophthalic base, it is the ideal choice for underwater hull repairs where maximum water resistance is mandatory.
What is the shelf life of this marine resin?
Stored in a cool (below 25°C), dry place in original sealed containers, it has a stability of 3-6 months from the date of manufacture.

Request Quote & Samples for Marine Resins

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Build Better Boats with Lechi

Order technical samples or speak with our marine engineers about your next hull design.

Consult Marine Engineers