Polyester resins and gelcoats

Gelcoats

Peroxides (catalysts)

Polyester resins

Thinners

Accelerators

Others

Showing 1-24 of 30 item(s)

Akcelerátor D

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Accelerator for Havelpol 12 resin, dosage 0.5 - 1 g per 100 g of resin.

Kč295.17

Butanox M 50 peroxide for curing polyester resins

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Most commonly used butanox version, suitable for temperatures above 20 °C. Available in red for visual inspection.

Kč434.84

Cobalt Accelerator for Curing Polyester and Vinyl Ester Resins 1 %

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Accelerates the curing process of resins. Use 0.5-3% of the resin weight. Do not mix with catalyst (peroxide) to avoid dangerous reactions. Limited shelf life of 3 months at 20°C in a closed container.

Kč531.47

HAVELcell P1 - Polyesterová pěna pro výrobu sendviče

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Reinforced white foam based on orthophthalic polyester resin, thixotropic and non-running, suitable for sandwich structures. Reduces product costs and speeds up production by up to 40%. Lower peroxide consumption and styrene evaporation. Ideal for boat manufacturing, floats even when submerged. Apply with brush or special equipment for best results. Bulk...

Kč349.19

Havelgelcoat 65 - polyester clear - brushable

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Havelgelcoat 65 is a pre-accelerated isophthalic gelcoat for mold application, suitable for marine, construction, and transportation industries. It offers excellent resistance to water and weathering. Activate with Butanox M50 (1-3%).

Kč541.72

Havelgelcoat 65 - polyester white - brushable

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Havelgelcoat 65 is a pre-accelerated isophthalic gelcoat for mold application, suitable for marine, construction, and transportation industries. It offers excellent water and weather resistance. Activate with Butanox M50 (1-3%).

Kč511.85

Havelgelcoat 97 - polyesterový čirý - natírací

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Havelgelcoat 97 is a pre-accelerated isophthalic gelcoat for mold application, offering excellent adhesion to epoxy resins and pre-pregs. Suitable for brush application and available in various colors, it is designed for both wet layup and vacuum infusion systems.

Kč497.79

HAVELinhibit 1

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Material for extending gel-time, ideal for large or complex polyester and vinylester resin products, especially in summer. Recommended dosage: 0.1 - 0.6% (by weight).

Kč857.60

HAVELPOL - 2 - bílý 2%

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HAVELpol 2 is a pre-accelerated polyester resin for hand lamination or spraying, ideal for colored products like bathtubs. Curing requires peroxide K1 or Butanox M50. Pot Life is 26 min at 20°C. Cures in 24 hours at 20°C; can be post-cured at higher temperatures.

Kč360.17

HAVELPOL - 4

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HAVELpol 4 is a clear yellowish polyester resin suitable for hand laminating transparent parts and casting orgonites. Requires mixing with Accelerator-cobalt and Catalyst-peroxide for curing. Recommended workshop temperature is 18-22°C. Can be modified for slower reactions.

Kč354.31

HAVELPOL - 5 CLEAR non-accelerated!

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HAVELpol 5 polyester resin is ideal for producing strong parts that endure high loads. Requires catalyst and accelerator for curing. Mix Peroxide K1 or Butanox M50 (1-2% by weight) and Cobalt accelerator (1-2% by weight) separately. Curing time varies with temperature and additives.

Kč316.25

HAVELPOL -1

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Pre-accelerated, thixotropic, low-emission orthophthalic resin suitable for low-strength products. Recommended mixing ratio is 100:1-2. Order peroxides separately for lamination.

Kč209.37

HAVELPOL -2 - new formulation

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HAVELpol 2 is a pre-accelerated orthophthalic polyester resin for hand lamination or spraying. Curing requires peroxide K1 or Butanox M50 (100:1-3 ratio). Pot Life is 26 min at 20°C. Cures in 24 hours at 20°C; post-cure options available.

Kč346.99

Peroxid SF 10 - MGS

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Peroxide for curing MGS gelcoats SF 30, T 30, T 35, T 3 PU, applied by spraying.

Kč2,150.47

Peroxide K1 for curing polyester resins

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High-quality resins with a recommended mixing ratio of 0.8-3%, depending on temperature and thickness. Avoid untested mixtures to prevent risks and costs.

Kč398.60

Polyester gelcoat/Vorgelat/ T 30 - MGS - clear

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High scratch-resistant gelcoat, mix with Peroxide SF 10 (100:10). Workability 25min, gel time 150min, full cure in 5-6 hours. Color with polyester pigment pastes. Dilute with SF thinner up to 10 parts.

Kč1,445.36

Polyester gelcoat/Vorgelat/ T 35 - MGS

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Specially developed gelcoat for aircraft manufacturing, available only in white. Recommended to use original peroxides and thinners for best results. Can be diluted with thinner SF up to 10 weight parts. Suitable for coloring with pigment pastes for polyesters. Recommended peroxides for curing SF 10 available in the online store.

Kč1,288.41

Polyester Gelcoat/Vorgelat/ T 35 SH - MGS

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Equivalent to polyester gelcoat T 35 - SH variant, suitable for spray application due to its thinner consistency.

Kč1,295.73

Polyester Resin Havelpol H 834 - REA 30W

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Polyester resin H 834 is a medium-reactive, thixotropic, pre-accelerated resin with controlled exotherm and low shrinkage, suitable for boat production and composite parts. It offers excellent mechanical properties, high HDT of 95°C, and good hydrolytic stability. Contains 66% non-volatile substances, reducing styrene emissions without losing adhesion....

Kč316.25

Polyester Vorgelat PC - clear, sprayable - pre-gel

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Vorgelat PC clear is a pre-accelerated ISO-NPG polyester gelcoat designed for use with epoxy laminates in marine, construction, and transportation industries. It offers excellent resistance to water, weather, and UV radiation, ensuring it does not yellow. Ideal for visible carbon parts, cars, and surfboards, with a minimum order quantity of 20kg.

Kč476.69

Polyesterová pryskyřice Polylite 32032-20

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Colorless, clear, accelerated, UV-stabilized orthophthalic resin (POLYLITE® 32032-20) with low viscosity. Ideal for applications requiring extreme purity and clarity, such as advertising items and encapsulating biological preparations. Same refractive index as glass. Recommended catalyst: Peroxide K1 (1-1.5%).

Kč499.62

Polyesterová samozhášivá pryskyřice Crystic U 1131 T (orto) pro DIN 5510

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CRYSTIC U 1131 T is a thixotropic unsaturated polyester resin suitable for fire-resistant laminates with low styrene content. It is halogen-free and heavy metal-free, classified M2 and F1 according to French Standard, and meets German standard DIN 5510 for fire resistance.

Kč140.55

Polyesterový gelcoat bílý GS 2000 H - Norpol

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Creates a smooth visible layer on the mold surface without further finishing. Two-component gelcoat system; mix in 1-3% Butanox M50 catalyst before use (sold separately).

Kč514.63

Polyesterový gelcoat čirý GS 100 S - Norpol GS Base - S

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Creates a smooth visual layer directly in the mold without further treatment. Use pigment pastes for coloring and Peroxide K1 for curing. Recommended layer thickness is 0.5 to 0.8 mm, applied by spraying or painting. Ensure proper thickness to avoid surface defects. Styrene removal is essential for effective curing.

Kč363.83

Polyester systems have long been among the most widely used matrix resins in the composite industry due to their combination of lower price, easy processing and fast curing. They are commonly used, for example, in transportation, construction, marine applications or in the production of composite moldings.

In this category you will find materials suitable for:

• hand lamination

• repairs of laminate parts

• production of molds and models

• surface treatment of composite products

• technical and industrial applications

What is polyester resin used for

Polyester resin is used as the basic binder in the production of laminates and composite parts. In combination with glass fabric, mats or other reinforcement, it creates a strong, dimensionally stable and durable composite unit.

It is suitable for:

• production of laminate covers, parts and panels
• repairs of fiberglass tanks, fairings, covers and tubs
• lamination of molds and models
• renovations and repairs in hobby and professional practice
• common composite work where the price / performance ratio is important

Polyester resins are traditionally very widespread, especially in GRP / fiberglass applications and common lamination. They are suitable for a wide range of standard composite projects where availability, fast processing and proven technology are required.

What is gelcoat for and why is it important

Gelcoat is a special surface layer used in the production of laminate and composite parts. It is usually applied as the first layer in the mold and after demolding creates a smooth, compact and visible surface of the product.

Gelcoats are used mainly for:

• creating a high-quality final surface
• improving resistance to moisture and weathering
• reducing the appearance of reinforcement
• producing aesthetically clean and professional-looking parts
• repairing and restoring the surfaces of laminate products

In practice, gelcoat is a very common surface layer for laminate products and molds. In polyester systems, it is used especially where it is necessary to combine the mechanical function of the composite with a high-quality appearance and higher surface resistance. Gelcoat is typically applied to the mold and then covered with reinforcement and additional resin.

What applications are polyester resins and gelcoats suitable for

Materials in this category are suitable for a wide range of applications:

Typical areas of application:

• repairs and fiberglass production
• boats, swimming pools, tanks and technical covers
• automotive and motorsport
• mold and model production
• industrial parts and covers
• hobby lamination and workshop projects

Polyester resins and gelcoats are popular where fast technological progress, good surface finish and reasonable production costs are required.

How to choose the right product

When choosing, we recommend taking into account mainly:

Application type

Another product is suitable for:

• hand lamination
• repair of damaged part
• mold production
• final visible surface

Desired surface

If you are mainly concerned with the appearance, smoothness and durability of the surface, a gelcoat or a subsequent system for the final layer is usually the appropriate choice.

Reinforcement type

Polyester resins are often used with:

• glass mat
• glass fabric
• other reinforcement materials for lamination

Environment of use

An important question is also:

• whether the part will be exposed to moisture • mechanical stress
• or outdoor conditions

Why buy polyester resins and gelcoats from us

At Havel-Composites, we select the range so that it is suitable for:

• craftsmen and manufacturers
• smaller workshops, service repairs and hobby use

You will especially appreciate the proven products for composite practice:

• possibility to connect to other materials for lamination
• easy selection of compatible accessories

Related categories that may be useful to you

For complete work with lamination, we also recommend:

Glass fabrics and mats
Carbon fabrics
Epoxy resins
Hardeners and accessories
Rollers and tools for lamination
Separating agents
Fillers and technical additives