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Products and specificationsGel coatsThese materials are used mainly in lay-up processes for large-surface models with a gel coat and a correspondingresin backing. Our highly versatile products are easily applied and optimally bonded with coupling paste KP 6.ResinHardenerColourMixing ratio (p. b. w.)ApplicationsMaterial propertiesProcessing dataViscosity at 25°C (mPas)Density at 20°C (g/cm 3 )Pot life 200 g /20°C (min.)Curing time at RT (hrs.)Physical dataFlexural strength (MPa)Flexural modulus (MPa)Compressive strength (MPa)Impact resistance (Charpy)(kJ/m 2 )Heat resistanceHDT DIN EN ISO 75 B (°C)Shore hardness (Shore D)Abrasion (Taber) (mg)Type/Application wt./RotationsOH 4SRwhite100 : 12.5Negatives,master models,foundry patternsversatile, veryeasily spread,easy to sandthixotrope1.40 ± 0.0515-203-595 ± 54815 ± 300100 ± 510 ± 282 ± 390 ± 3--OH 6-1SRblue100 : 9Foundry patterns,core boxes,pattern platesvery abrasionresistant, very hard,fine structurethixotrope1.75 ± 0.0515-205-8105 ± 86650 ± 400104 ± 8-94 ± 385 ± 3approx. 36H 18/500/250OH 11PUR 3red brown100 : 40Foundry patterns,core boxes,pattern plates,negativesabrasion resistant,impact resistant,polyurethane basethixotrope1.27 ± 0.0230-403-580 ± 74230 ± 25080 ± 57 ± 172 ± 288 ± 3approx. 72H 18/500/250OH 16Comp. Blight green100 : 70Core boxes,foundry patterns,pattern platesvery abrasionresistant, hardflexible, veryimpact resistantthixotrope1.12 ± 0.0210-156-8-----58 ± 3approx. 19H 18/500/500OH 17Comp. Bwhite100 : 45Pattern plates,foundry patterns,core boxesvery abrasionresistant, very hardflexible, veryimpact resistantthixotrope1.18 ± 0.0210-158-10-----64 ± 3approx. 18H 18/500/500OH 47Comp. Bwhite100 : 41Pattern plates,foundry patterns,core boxesvery abrasionresistant, very hardflexible, very impactresistant, nontoxicthixotrope1.10 ± 0.0214-208-10-----64 ± 3approx. 22H 18/500/500Pattern made of OH 11 with PS 03Application of the surface layer11