HYSOL / ENTHONE CATALYST DESCRIPTION
Catalyst / Description Cure / Average Pot Life* (hours)
20/A Basic air cure catalyst. Cures at room temperature in 5-7 days.
Tack free after 1-2 hours.
May also be heat cured. *R.T. or Heat 2 hours
B-3 Basic heat cure only catalyst. Higher cure temperatures decrease cure time.
Heat 4 hours
5 Long pot life. Excellent adhesion properties. Special mix
ratios are required for this heat cure only catalyst (refer to
Color Numbers and Mix Ratios Section). Heat Cure. Average Pot Life (hours) 24 Max.
B-13/28 Accelerated air cure catalyst. Cures at room temperature in 3 days. Shorter pot life.
*R.T. or Heat 1 hour
45 Long pot life. This heat cure only catalyst contains adhesion promoters.
Provides excellent adhesion to glass and metals with good water resistance.
Slightly decreases solvent resistance. Heat 12 hours
77 Adhesion promoting catalyst. Cures at room temperature in 5-7 days.
Provides similar characteristics as Catalyst 45.
Maximum adhesion is achieved by heat cure @ 65.6-93.3 oC (150-200oF)*R.T. or
Heat 1 Hour * @ 21°C (70°F)
9 Basic heat cure only catalyst with good anti-yellowing resistance.
(Recommended for use with 50-110RX). Heat Cure. Average Pot Life (hours) 7.
* Note: When using Catalyst #5 discard ink after 24 hours.
MIXING INSTRUCTIONS Measure ink and catalyst at the proper mix ratio (refer to Section 2.0). Both the ink and catalyst should be weighed accurately. Excessive and insufficient amounts of catalyst are detrimental to cured ink film properties. Mix thoroughly without introducing excessive amounts of air. Avoid the use of paper or wax coated cups. Stir from bottom of the container
OBSERVE INDUCTION PERIOD
All catalysts: 30 minutes
Catalysts 45 and 5: 60 minutes
Allow ink/catalyst mixture to stand for at least 30 minutes prior to application. This provides an induction period ensuring a homogenous mix of resin and catalyst and allows any entrapped air to escape from the mixture. The average pot life begins after the induction period
APPLICATION
50-000 Series inks may be applied by screen printing, spraying, brushing and roller printing. To ensure optimum adhesion, it is imperative that the surface to be printed is clean and free of any residues or particulates.
OPTIONAL ADDITIONS Additions of thinner or flow agents should always follow the induction period. If the induction period is not observed, the thinner or flow agent may interfere with the catalyzation process and could effect the final cured properties.