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Resins

Castro Composites focuses on most of the important thermosetting resins for composite applications. We offer resins for hand lay-up, spray-up, infusion, RTM, RTM light, pultrusion, etc.

Thermosetting resins are polymers that react thanks to the addition of a catalyst or a hardener causing an exotherm reaction. This reaction can also be boosted by UV or IR radiations or just by a source of heat.

Composite laminates are a combination of fibre reinforcement and resin. Once cured, these finished parts are primarily fiber dominant, meaning their physical properties most resemble those of the reinforcement used. So what role does resin play? It serves two basic purposes:

The matrix bonds the fibres of reinforcement together and helps it conform to a desired shape.
Resin also helps to transfer mechanical loads from the fibers of reinforcement to the entire composite part.

The resin also determines the thermal limit of the composite part. It is very important to know what is the Tg (Glass Transition Temperature) or HDT (Heat Distortion Temperature) of the resin in order to know what will be the heat resistance of the part.

Crystic 446MPA35 Low Exotherm Hand Lay-Up & Spray Up Polyester Resin

WRP0446V
Crystic Resin 446MPA35 is a pre-accelerated, thixotropic, spray viscosity orthophthalic polyester resin. This laminating resin has rapid wet-out, low exotherm and fast hardening characteristics making it ideal for rapid mould turnaround. It contains a colour change system and will change from blue to to natural colour when the catalyst is added to the...
€11.50 €11.50 Tax incl. €9.50 Tax excl.

Crystic 446PALV Low Exotherm Hand Lay-Up & Spray Up Polyester Resin

WRP0446
Crystic Resin 446PALV is a pre-accelerated, thixotropic, spray viscosity orthophthalic polyester resin. This laminating resin has rapid wet-out, low exotherm and fast hardening characteristics making it ideal for rapid mould turnaround. It contains a colour change system and will change from blue to to natural colour when the catalyst is added to the...
€11.50 €11.50 Tax incl. €9.50 Tax excl.

Recapoli 957TPA Orthopthalic Polyester Resin

RP957TPA
RECAPOLI 957TPA is a thixotropic and preaccelerated, orthophthalic, low reactivity unsaturated polyester resin. It contains special additive for reducing styrene emissions in the workshop. It provides cured laminate a tack-free surface.The resin contains a peroxide indication system, which offers a color change from bluish to pale green after addition of...
Product available with different options
€11.98 €11.98 Tax incl. €9.90 Tax excl.

Crystic R115PA Hand Lay-UP Ortho Polyester Resin

WRP0115A
 (2)
Crystic R115PA is a thixotropic, accelerated, orthophtalic general purpose unsaturated polyester resin. CRYSTIC R 115 PA can be used by hand lay up or by spray application for the production of most glass reinforced laminates.
€11.51 €11.51 Tax incl. €9.51 Tax excl.

Crystic R115PAV01 Hand Lay-up Flexible Orthophthalic Polyester Resin

WR0115AF
 (2)
CRYSTIC R115PAV01 is a flexible, pre-accelerated, orthophtalic unsaturated polyester resin that can be used by hand lay up or by spray application for the production of most glass reinforced laminates. This resin can also be used for casting applications.
€11.54 €11.54 Tax incl. €9.54 Tax excl.

Crystic 198 Heat and Chemical Resistant Polyester Resin

WRP0198
Crystic Resin 198 is a medium viscosity orthophthalic polyester resin with good heat and chemical resistant properties. Developed for use in the chemical industry - tanks, pipes , fumestacks etc where heat and chemical resistance are both required but can also be used in industrial, transportation and building and construction applications.
Out-of-Stock
€13.31 €13.31 Tax incl. €11.00 Tax excl.

Crystic R115PA White Hand Lay-Up Orthophthalic Polyester Resin

WRP0115AB
 (1)
Crystic R115PA is a thixotropic, accelerated, orthophtalic general purpose withe pigmented unsaturated polyester resin that can be used by hand lay up or by spray application for the production of most glass reinforced laminates.
€14.05 €14.05 Tax incl. €11.61 Tax excl.

Recapoli 955 INF-DCPD Polyester resin

WRP0955I
RECAPOLI 955INF-DCPD is a low viscosity DCPD based, pre-accelerated, unsaturated polyester resin in styrene monomer. This resin allows to produce laminates with comparatively short delamination times at an excellent level of polymerization. It has a very low peak exotherm.
€14.52 €14.52 Tax incl. €12.00 Tax excl.

Crystic 489PA35 Hand Lay-Up Isophthalic Polyester Resin

WRP0489PA35
Crystic 489PA35 is an isophthalic, thixotropic, and pre-accelerated unsaturated polyester resin. Ideal for the manufacture of laminates with reinforcing fibers in nautical applications and in shipbuilding. It is a formulation with gel time 33 to 37 min at 25ºC and with 2% PMEC catalyst. It has a Lloyd's Register of Shipping certificate.
€14.52 €14.52 Tax incl. €12.00 Tax excl.

Crystic 489 PABTLV Hand Lay-Up Isophthalic Polyester Resin

WRP1489
Crystic 489 PABTLV is a thixotropic, isophthalic and pre-accelerated polyester resin. When used with Crystic Gelcoat 65PA, they produce a matched performance system for moulding boat hulls with outstanding durability and superior blister resistance. Crystic 489 PABTLV is approved by Lloyd’s Register of Shipping for use in the construction of craft under...
Out-of-Stock
€14.52 €14.52 Tax incl. €12.00 Tax excl.

Crestafire® P1-3001PA Fire Retardant Hand Laminate Resin

CRP13001PA
Crestafire® P1-3001PA is a filled, pre-accelerated, fire retardant unsaturated polyester resin. It incorporates a selected grade of Alumina Trihydrate (ATH) which makes it suitable for the production of laminates where excellent resin flow, fire retardancy and low levels of smoke & toxic fumes are required. Crestafire® P1-3001PA is halogen free and...
€15.67 €15.67 Tax incl. €12.95 Tax excl.

Recapoli 2196 Clear Casting Polyester Resin

WRP2196
 (3)
Recoil 2196 is a clear, orthophthalic and pre-accelerated casting polyester resin with UV filter to prevent yellowing.
€16.15 €16.15 Tax incl. €13.35 Tax excl.

Fetadit PA-47 Waterbased Epoxy Primer

WRE0047
 (2)
Fetadit PA-47 is a waterbased epoxy primer with high adhesion to metals, wood, cement & concrete, etc. Ideal for improving the adhesion of laminates made with epoxy resins to these surfaces.
€16.79 €16.79 Tax incl. €13.88 Tax excl.

Crystic RTR4010PA Rapid Tooling Low Profile Polyester Resin

RTR4010
Crystic RTR 4010PA is a new, improved rapid tooling resin which incorporates better handling properties, lower viscosity, improved shrinkage control and is catalysed with standard MEKP catalyst.  RTR 4010PA is a thixotropic, filled, low profile resin for hand-lay mould making applications. RTR 4010PA helps to achieve faster mould making and eliminates...
€17.85 €17.85 Tax incl. €14.75 Tax excl.

Crystic VE679PA Hand Lay-Up Vinyl Ester-DCPD Resin

WRV0679
 (1)
Crystic Resin VE679PA is a pre-accelerated thixotropic DCPD modified vinylester resin. Developed for use as a skin coat in marine and tooling applications. Excellent blister resistance and reduced print through.  It has a 23 minute geltime and is Lloyd´s Register approved.
€20.27 €20.27 Tax incl. €16.75 Tax excl.

Crystic VE676T AC High Chemical Resistance Vinyl Ester Resin

WRV0676
 (1)
Crystic Resin VE676 is an epoxy bisphenol A based, vinyl ester with excellent chemical resistance (acid, alkalies and oxidising agents). Suitable for many chemical processing applications (storage tanks, vessels, ducts) via a range of techniques (contact moulding, filament winding, injection moulding).
Product available with different options
€20.51 €20.51 Tax incl. €16.95 Tax excl.

Recapoli PE-3680PA Polyester Resin for coating polystyrene foams

WRP0100
Recapoli 3680PA is a preaccelerated unsaturated polyester resin for lamination of polystyrene foams, usually with glass fabrics like surface veils and chopped strand mats. This resin does not attack or melt polystyrene foams (35-40 kg/m3 density). It is preaccelerated with a 0,2% of Cobalt 6% and catalysed with methyl ethyl ketone peroxide: 1.5% by...
€20.87 €20.87 Tax incl. €17.25 Tax excl.

ACT High Chemical Resistance Vinyl Ester Resin

WRV0580
 (1)
Vinyl Ester ACT is a pre-accelerated thixotropic, high grade bisphenol A vinyl ester urethane resin.It which combines exceptional chemical resistance and an outstanding combination of heat resistance and flexibility. Furthermore Vinyl Ester ACT has very good handling and curing properties. Vinyl Ester ACT is resistant to many aqueous acidic salts and...
€20.80 €20.80 Tax incl. €17.19 Tax excl.

Crystic VE 677 PA High Chemical Resistance Epoxy Bisphenol Vinyl Ester Resin

WRV0677
CRYSTIC VE 677 PA is a vinyl ester resin based on epoxy bisphenol A. It is thixotropic and pre accelerated. CRYSTIC VE 677 PA has excellent chemical resistance to a wide range of substances (acids, alkalies and oxidising agents). Crystic VE 677 PA utilises isophthalic UP resin as an additive in order to achieve favourable handling performance...
€22.93 €22.93 Tax incl. €18.95 Tax excl.

Crestapol 1260 Urethane Acrylate Resin

RP1260
 (7)
Crestapol 1260 is a low viscosity urethane acrylate resin for use in pultrusion, filament winding,  RTM and vacuum infusion applications. This is a tough resin, compatible for use with carbon fibre or any other fabric.
Out-of-Stock
€24.44 €24.44 Tax incl. €20.20 Tax excl.

X590AC High Chemical Resistance Vinyl Ester Resin

WRV0590A
 (1)
X590AC is an epoxy novolac based vinyl ester, dissolved in styrene. X590AC provides excellent thermal and chemical resistance against solvents, acids and oxidizing media like chlorine. The resin offers high retention of strength at elevated temperatures.
€24.14 €24.14 Tax incl. €19.95 Tax excl.

Urethane Acrylate Resin Crestapol 1261, High Fire Resistance

CR1261
Crestapol® 1261 is a high performance l ow viscosity urethane acrylate type resin to work with Carbon Fibre, Glass or any other reinforcement types, suitable for infusion, RTM and similar processes at room temperature. Crestapol® 1261 produces laminates with high strength and toughness with exceptional water and hydrolysis resistance.
€24.44 €24.44 Tax incl. €20.20 Tax excl.

PU-31 Rapid Prototyping Casting Polyurethane Resin

WPU0031
 (7)
High reactivity and low viscosity two component rigid polyurethane without foaming agents. Suitable for the production of parts with a density between 1000 - 1300 kg/m3., high hardness and good physical and mechanical properties.
Last items in stock
€30.25 €30.25 Tax incl. €25.00 Tax excl.

Castropox 4307/1209 general purpose Epoxy Resin

WRE4307
 (23)
Castropox 4307/1209 is a general purpose epoxy system suitable for fiberglass laminates on wood or cement, composite parts manufacturing without high mechanical requirements, concrete flooring primer, etc.
€33.46 €33.46 Tax incl. €27.65 Tax excl.

Castropox 4307 FLEX / 1209 Flexible General Purpose Epoxy Resin

WRE1784
 (3)
Castropox 4307FLEX/1209 is a flexible general purpose epoxy system suitable for fiberglass laminates on wood, concrete, metals etc. Ideal for working with any fiberglass, carbon or aramid (Kevlar).
€36.24 €36.24 Tax incl. €29.95 Tax excl.

Resoltech 1050 Infusion Epoxy Resin

WRE1050
 (14)
The 1050 epoxy laminating system is formulated to manufacture high performance lightweight structures with glass, carbon, aramid and basalt reinforcements with or without post-curing. This epoxy system is also suitable for the manufacture of small to very large structures and composite parts by wet lay-up, infusion, injection moulding or filament winding.
€39.63 €39.63 Tax incl. €32.75 Tax excl.

Resoltech WWA ECO / WWB7 Clear Casting Epoxy Resin, max. 15 mm

Resoltech WWA is a unique clear epoxy system formulated for decorative applications and castings. It is totally clear, UV stabilized, not solvented and compatible with glass. Excellent optical properties and no shrinkage are the key features of this system.
€44.83 €44.83 Tax incl. €37.05 Tax excl.

Optical Brightner Additive for Epoxy Resins x 50 ml

ADDITIF-0.05
 (1)
Optical Brightner Additive enhances the white colour of surfboards, paddle boards, etc. It acts as a yellowing retarder for epoxy resins. Sold in a drop dispenser bottle. Optical Brightener is an epoxy additive for WWA, WWAS, 4000, 1070 CLEAR, 1070S CLEAR and 1070 ECO Resoltech’s resins.Sold in 50 ml bottles, a few drops in the resin part of the topcoat...
€46.59 €46.59 Tax incl. €38.50 Tax excl.

Crystic U904LVK30 RTM & Infusion Orthophthalic Polyester Resin

WRP0904LVK30
Crystic Resin U904LVK30 is a low viscosity pre-accelerated orthophthalic polyester resin developed for use in RTM, RTM light and infusion tecniques. It has been designed for cure with standard MEKP and gives suppressed exotherm characteristics with fast cure. 
€47.49 €47.49 Tax incl. €39.25 Tax excl.

Castropox Clear Cast Epoxy Resin

clearcast
 (8)
Castropox Clear Cast is a clear casting epoxy resin used mainly for flooring applications where good transparency, surface aspect, as well as hard-wearing mechanical properties are needed. It is also suitable for achieving high gloss clear aestethic layers of epoxy resin over tabletops, bar tops, carbon fiber composite sheets, etc.
€47.19 €47.19 Tax incl. €39.00 Tax excl.

Resoltech 1200 Hand lay-up Epoxy Resin

 (1)
RESOLTECH 1200 is a state of the art laminating epoxy system, formulated without reactive diluents (primary cause of allergies) thus improving the H&S working conditions. It allows to manufacture small parts as well as large composite structures & tools with all the existing fibres. The system enables application by wet lay up, vacuum bagging and...
€49.31 €49.31 Tax incl. €40.75 Tax excl.

Resoltech 1020T Thixotropic Hand Lay-Up Epoxy Resin

WRE1020T
 (8)
RESOLTECH 1020T is a pregel wood adhesive system optimised for the manufacture of laminated wood parts and structures. It provides ease of use, low toxicity to the user, good impregnation of the timber surface, high mechanical performance of the cured structure and an adjustable working time.
€49.91 €49.91 Tax incl. €41.25 Tax excl.

Resoltech 1020 Hand Lay-Up Epoxy Resin

WRE1020NT
 (4)
RESOLTECH 1020 is a room temperature epoxy laminating system for woodepoxy, concrete reinforcement and metal constructions that are inherently moving structures. In boat building, it may be used for: all wood types lamination, coating, scarfing, strip planking, as well as bonding in form of fillet joints applications when filled with wood flour and silica.
€50.76 €50.76 Tax incl. €41.95 Tax excl.

Resoltech 1040/1041HT Epoxy Resin

RE1040
 (1)
Advanced epoxy laminating system formulated to manufacture high performance lightweight structures with glass, carbon, aramid and basalt fibres with post-curing. This excellent wetout system is recommended for the manufacture of tools and composite parts that require to resist to temperatures under load up to 130ºC.
€50.64 €50.64 Tax incl. €41.85 Tax excl.

Resoltech 1500 Infusion Structural Epoxy Resin for Tooling & Parts

RE1500
Resoltech 1500 / 1504 is an epoxy infusion system with an extremely low viscosity that enables structural composite parts& tools manufacturing with glass of carbon fibre. The system is compatible with RESOLTECH ́s range of 140°C tooling gelcoat, laminating and repair systems.
€51.30 €51.30 Tax incl. €42.40 Tax excl.

Resoltech WWAS / WWB4 Clear Casting Epoxy Resin

WRE0002
 (3)
Resoltech WWAS is a unique clear epoxy system formulated for decorative applications and castings. Very good UV resistance, not solvented and compatible with glass when thickness of the castings are not higher than 5 mm. Excellent optical properties and no shrinkage are the key features of this system.
Last items in stock
€51.91 €51.91 Tax incl. €42.90 Tax excl.

Resoltech 1070 Hand Lay-Up Clear Epoxy Resin

WRE1070
 (21)
RESOLTECH 1070 is a hand lay-up epoxy laminating system formulated to produce clear laminates and high gloss coatings with good UV stability and good mechanical properties while retaining some flex for improved fatigue performance such as for surfboards. Very fast hardening in film.
€53.18 €53.18 Tax incl. €43.95 Tax excl.

Resoltech WWA/WWB4 Clear Casting Epoxy Resin

WRE0004
 (8)
Resoltech WWA is a unique clear epoxy system formulated for decorative applications and castings. It is totally clear, UV stabilized, not solvented and compatible with glass. Excellent optical properties and no shrinkage are the key features of this system.
€54.45 €54.45 Tax incl. €45.00 Tax excl.

Resolcoat 4000 / 4005 Clear Epoxy Coating Resin

 (2)
RESOLCOAT 4000 CLEAR / 4005 is a clear epoxy coating system formulated to produce high gloss coatings with the best possible UV stability for an epoxy system with all the high mechanical characteristics epoxies offer compared to other coatings. Maximum layer thickness recommended: 1 mm.
€59.23 €59.23 Tax incl. €48.95 Tax excl.

RESOLTECH 1080S Epoxy Laminating & Infusion Resin

WRE1080S
 (4)
RESOLTECH 1080S is the highest modulus epoxy system formulated to manufacture high performance, rigid, lightweight structures with glass, carbon, aramid and basalt fibres with or without post-curing. Optimized with a low reactivity, low viscosity and excellent air release properties, is suitable for the manufacture any size structures and composite parts...
€60.14 €60.14 Tax incl. €49.70 Tax excl.

Resoltech 1800 Infusion Epoxy Resin

WRE1800
RESOLTECH 1800 is an epoxy system for infusion and injection applications with extremely low viscosity for fast and secure reinforcements wetting. 
€60.09 €60.09 Tax incl. €49.67 Tax excl.

Crystic PD9551 Low Profile Unsaturated Polyester Resin for RTM & Infusion

WRP9551
 (1)
CRYSTIC PD 9551 is a low profile polyester resin, designed for use in RTM. It is a mixture of an unsaturated polyester resin and a low profile additive, which phase separate during the curing reaction. The dissimilar thermal expansion/contraction rates of the two components produce micro voids, which compensate for the bulk shrinkage of the unsaturated...
€60.50 €60.50 Tax incl. €50.00 Tax excl.

Resoltech 1070 ECO Clear Hand Lay-up Epoxy Resin

WRE1070ECO
 (1)
37% Bio-sourced epoxy system for room temperature cure & mould release Specially recommended for structural laminates and self leveling top-coats. Excellent wetting properties on all reinforcements Enables use of polyester topcoat without inhibition of polyester.
€65.04 €65.04 Tax incl. €53.75 Tax excl.

Crestapol® 1211A Fire Resistant filled urethane acrylate resin

CR1211A
Crestapol® 1211A is a filled, partially accelerated, tough, urethane acrylate resin designed for applications requiring the highest levels of fire & smoke performance. It incorporates a selected grade of Alumina Trihydrate (ATH) which makes it suitable for the production of laminates where excellent fire resistance and low levels of smoke & toxic...
€65.75 €65.75 Tax incl. €54.34 Tax excl.

Resoltech 1600 Flexible Epoxy Resin

WRE1600
 (2)
RESOLTECH 1600 / 1606 system results of the latest advances in epoxy chemistry formulation and enables to obtain a flexible epoxy retaining all the added values of epoxy resins: high adhesion, high toughness, but none of the aging issues in the older flexible formulations. It is formulated for the production of flexible laminates that need a high...
Last items in stock
€71.39 €71.39 Tax incl. €59.00 Tax excl.

Resoltech VLS UV Flexible Clear Epoxy Resin

WRE0005
 (7)
Resoltech VLS UV is a clear and UV stable epoxy varnish formulated to produce high gloss thick coatings to enhance wood or other supports. It is waterproof, easy to apply in films 1 mm to 4mm thick. It combines low toxicity, high mechanical and abrasion resistance.
Last items in stock
€76.05 €76.05 Tax incl. €62.85 Tax excl.

HPE-V2 Elastomer System with adjustable Hardness 40-85 SHORE A

High performance elastomer system designed for the production of mechanically and/or thermally stressed technical parts, moulds and models, with a new isocyanate component for the higher hardnesses.
Out-of-Stock
€78.65 €78.65 Tax incl. €65.00 Tax excl.
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