PEROXAN A-40 L

PEROXAN A-40 L is used for the curing of unsaturated polyester resins at ambient temperature in combination with cobalt accelerators. With the curing system PEROXAN A-40 L in combination with a cobalt accelerator a much faster speed of cure may be achieved than with curing systems based on a MEKP plus cobalt accelerator. Normally, the gel times with PEROXAN A-40 L are comparable to those with PEROXAN ME-50 L. PEROXAN A-40 L is particularly suitable in those applications where a fast mold-turnover is required, e.g. for the cold press molding or resin injection molding techniques. The system PEROXAN A-40 L plus cobalt accelerator will give a higher peak exotherm than a standard MEKP / cobalt accelerator system. Due to this fact, it is recommendable to avoid the production of too thick laminates in one operation. At low temperatures a reasonable speed of cure is still obtained when PEROXAN A-40 L is used in combination with a cobalt amine accelerator, e.g. PERGAQUICK C24 AX, which contains N,N-Dimethylaniline as promotor. Depending on working conditions, the following peroxide and accelerator dosage levels are recommended: PEROXAN A-40 L: 1,0 to 3,0 phr PERGAQUICK C12 X (Cobalt, 1%): 0,5 to 2,0 phr Curing according to DIN 16945 (20g Orthoptalic resin in a double-walled test tube at 21°C) PEROXAN A-40 L 2% + PERGAQUICK CP-12 0.5% PEROXAN A-40 L 2% + PERGAQUICK CP-12 0.2% PEROXAN A-40 L 1.5% + PERGAQUICK CP-12 1.0% PEROXAN A-40 L 1.5% + PERGAQUICK CP-12 0.5% PEROXAN A-40 L 1% + PERGAQUICK CP-12 1.0% PEROXAN A-40 L 1% + PERGAQUICK CP-12 0.5% 200 400 600 800 1,000 1,200 1,400 1,600 1,800 2,000 2,200 0 20 40 60 80 100 120 140 160 180 Time in s Temperature in °C

• Maximum storage temperature (Ts max) : 25°C
• Minimum storage temperature (Ts min) : 5°C
• Storage stability as from date of delivery : 6 months
• Keep packaging tightly closed in a well ventilated place at indicated storage temperature. Keep away from reducing agents e.g. amines, acids, alkalis, heavy metal compounds (e.g. accelerators, driers, metal soaps). Never weigh out in storage room. Oxidizing agent. Decomposes violently under the influence of heat or by contact with reducing agent. Never mix with accelerators.
• Please refer to the material safety data sheet (MSDS) for information concerning safe storage, use and handling of PEROXAN A-40 L.