IR-1500/1530 Organic Silicon Surface Additive (equivalent to TEGO-5000)


IR-1500/1530 Hydroxyl-modified polydimethylsiloxane (equivalent to TEGO-5000)

Typical Properties

Density at 20°C, g/ml Non-volatile matter, % Water content, % Hydroxyl value calculated on non-volatile content, mg KOH/g
IR-1500 0.98-1.03 >96 0.05 40-48
IR-1530 0.98-1.02 >96 0.05 20-28
These properties are provided as typical properties. NOT THE PRODUCTS TECHNICAL INDEX.

Proposed Dosages

Dosage based upon total formulation, %
IR-1500/1530 2-pack coatings based on acrylic/isocyanate and polyester/isocyanate;
1-3 %, based on total formulation
The above-recommended dosages strongly depend on pigment particle size. Optimal dosages should be calculated in the laboratory according to a different formula.

Addition Methods&Process Technology Instructions

– Test the compatibility with a binder.
– Add under intense agitation (agitator) in varnish formulations
– Recommend to add during grind stage in pigmented formulations.


– Dilutable in esters, ketones, and glycol ethers.
– When diluting with aromatic solvents (toluene, xylene, Solvesso 100), it is recommended to add isobutanol or ketones with the aromatics at a ratio of 9:1.

Packing and Storage

Packed in iron drums of 25 or 200kg net each. The validity period is 12 months in sealed containers.