PRODUCT INFORMATION
Pre-Pigmented Gelcoats from Scott Bader are now Made in India using Scott Bader’s proprietary Gelcoat-making technology. Satyen Scott Bader has announced the launch of their Crystic Pre-Pigmented Gel Coats in India.
Satyen Scott Bader’s Gel Coats are designed using individually selected base resins depending on the requirements of the application. Crystic pre-pigmented gelcoats are manufactured using Crystic base pigments which have been thoroughly tested for long-term performance. The best quality pigments are selected to offer the lowest colour change and highest gloss retention. The company offers colour matching-service for customer-specific colours in addition to offering the products in standard RAL range. The gel coats have excellent resistance to osmosis (blistering) and have a low porosity finish. Crystic Gel Coats are tested and passed for 12 months Florida test for UV stability. These products find applications in various markets viz. marine, automotive, buildings, swimming pools, recreation, architecture etc. All Gelcoats are available in Brush and Spray versions.
Standard Gelcoats include :
Crystic 65E PA – Isophthalic Brush Gel Coat with excellent water resistance.
Crystic LS97PA – Low Styrene Content Isophthalic superior weathering gel coat with excellent water resistance and improved spray characteristics.
Crystic 69PA – Chemical and water resistant Isophthalic-NPG Brush Gel Coat.
Crystic 92PA – Chemical and water resistant Isophthalic-NPG Spray Gel Coat.
Isophthalic Brush Gelcoat with Excellent Water Resistance.
Introduction
Crystic Gelcoat 65PA is a pre-accelerated, isophthalic gelcoat. It has been formulated for brush application, but spray versions are available. Crystic Gelcoat 65PA is available in a wide range of colours and the information contained in this technical data sheet also applies to these pigmented versions. A non-accelerated version, Crystic Gelcoat 65, can also be supplied.
Applications
Crystic Gelcoat 65PA is designed for use in the marine, building and transport industries. It is also suitable for general moulding requirements.
Features and Benefits
Crystic Gelcoat 65PA has excellent water and weather resistance.
Approvals
Crystic Gelcoat 65PA is approved by Lloyd’s Register of Shipping for use in the construction of craft under their survey.
When backed with Crystic 356PA, it is capable of obtaining a Class 1 certificate to BS476 Part 7 and of satisfying the requirements of the Building Regulations for a Class O structure. The same laminate can also achieve an M1 rating to the French Epiradiateur NFP 92-501 test.
Formulation
Crystic Gelcoat 65PA should be allowed to attain workshop temperature (18 0C-200C) before use. Stir well by hand, or with a low shear mixer to avoid aeration, and then allow to stand to regain thixotropy. Crystic Gelcoat 65PA requires only the addition of catalyst to start the curing reaction. The recommended catalyst is Butanox M50 (or other equivalent catalyst), which should be added at 2% into the gelcoat. (Please consult our Technical Service Department if other catalysts are to be used). The catalyst should be thoroughly incorporated into the gelcoat, with
| Pot Life Temperature | Pot Life in Minutes |
| 150C | 24 |
| 200C | 15 |
| 250C | 9 |
The gelcoat, mould and workshop should all be at, or above 150C before curing is carried out.
Application
For normal moulding, the application of Crystic Gelcoat 65PA should be controlled to 0.4-0.5 mm (0.015-0.020 inch) wet film thickness. As a guide, approximately 450-600 g/m2 of gelcoat mixture (depending on pigment) will give the required thickness when evenly applied.Application
Additives
Crystic Gelcoat 65PA is supplied in a wide range of colours. This eliminates the potential for mixing errors with small quantities of pigment paste. The addition of fillers or pigments can adversely affect the water and weather resistance of the cured gelcoat. Crystic Gelcoat 65PA can be used as a topcoat provided that 2% Crystic Solution MW is added to overcome the normal tackiness.
Recommended Testing
It is recommended that customers test all pigmented gelcoats before use under their own conditions of application to ensure the required surface finish is achieved.
Typical Properties
The following tables give typical properties of Crystic Gelcoat 65PA when tested in accordance with SB, BS, EN or BS EN ISO test methods.
| Property | Liquid Gelcoat | |
| Appearance | Mauvish, cloudy | |
| Viscosity @ 250C | thixotropic | |
| Specific Gravity @ 250C | 1.11 | |
| Volatile Content | % | 34 |
| Geltime at 250C using 2% Butanox M50 (or other equivalent catalyst) | minutes | 9 |
| Stability @ 200C | months | 3 |
| Property | Fully cured* (unfilled casting) | |
| Barcol Hardness (Model GYZJ 934-1) | 42 | |
| Water Absorption 24hrs @ 230C | mg | 18 |
| Deflection Temperature under load (1.80MPa)† | 0C | 75 |
| Elongation at Break | % | 3.0 |
| Tensile Strength | MPa | 75 |
| Tensile Modulus | MPa | 3500 |
I* Curing schedule – 24 hrs @ 200C, 3 hrs @ 800C
† Curing schedule – 24 hrs @ 200C, 5 hrs @ 800C, 3 hrs @ 1200C
Post-Curing
Satisfactory laminates for many applications can be made with Crystic Gelcoat 65PA by curing at workshop temperature (200C). However, for optimum properties, laminates must be post-cured before being put into service. The moulding should be allowed to cure for 24 hours at 200C, and then be oven-cured for 3 hours at 800C.
Storage
Crystic Gelcoat 65PA should be stored in its original container and out of direct sunlight. It is recommended that the storage temperature should be less than 200C where practical, but should not exceed 300C. Ideally, containers should be opened only immediately prior to use.
Packaging
Crystic Gelcoat 65PA is supplied in 25kg and 225kg containers.Information courtesy: Satyen Scott Bader
