Koch-Chemie × COLOURLOCK COLOURLOCK "Crosslinker CD" Hardener 50ml

COLOURLOCK Crosslinker CD — Hardener for maximum durability of leather dyes & coatings

What is COLOURLOCK Crosslinker CD for? — The hardener clearly boosts the abrasion, water and chemical resistance of COLOURLOCK dyes and coatings, giving you long-lasting, professional repair and dyeing results.

COLOURLOCK Crosslinker CD is the professional hardener for every COLOURLOCK dye and coating system. You mix a small amount into the dye or top-coat, and it makes the finished surface harder, tougher and far more hard-wearing. On high-wear leather and plastic surfaces in particular – think steering wheels, seat bolsters, furniture edges or grab areas – Crosslinker CD bumps up durability significantly. Ideal for cars, furniture, bags, interiors and anywhere that takes a beating, mechanically or chemically.

• Boosts abrasion & scratch resistance – The dye lasts longer and stays put, even on surfaces that get hammered daily.
• Better all-round resistance – Improves resistance to water, sweat, cleaning agents and alcohol.
• Professional repair quality – A must for COLOURLOCK dye builds and top-coats that go the distance.

Crosslinking technology & how it works in the dye film

Crosslinker CD drives the chemical crosslinking of the binders inside the dye or top-coat. That crosslinking knits a denser polymer film – harder, more abrasion-resistant and tougher against moisture, sweat, cleaners and mechanical load. The formula is dialled in exactly for COLOURLOCK dye systems and kicks in once the dye film has dried and cured. According to Koch-Chemie, the result is a professional, rugged coating that stays stable for the long haul, even on heavily used leather parts.

Mixing, processing & best-practice application

You blend Crosslinker CD sparingly into the COLOURLOCK dye or top-coat. The hardener activates the coating, so you have to use the mixed batch within a set window. Lay the mix down with a sponge, brush or spray gun. It really earns its keep on steering wheels, armrests, seat bolsters or bag handles, where you want maximum durability. Once it's on, let the crosslinked layer dry and cure all the way through before you put the surface back to work. Crosslinker CD isn't a standalone product – it goes in only as an additive to dyes and clear coats.

Results, use cases & the payoff in detail

After you use Crosslinker CD, you get a heavy-duty, longer-lasting dye or clear coat. The surface feels more stable, less touchy, and shrugs off everyday use far better. Ideal for vehicle detailing, furniture restoration, bag and shoe repairs or commercial work. Crosslinker CD doesn't replace cleaning, prep or structural repair – it only dials up the durability of the final dye layer, which makes it a step you can't skip on top-tier leather repairs.

Common questions about COLOURLOCK Crosslinker CD

How much crosslinker goes into the dye?

Just a small amount, per the manufacturer's spec. Too much hurts how the mix works.

Can I apply Crosslinker CD neat?

No. It's only meant as an additive for dyes and top-coats.

Does the hardener make the dye harder?

Yes. The coating gets more abrasion-resistant and tougher, but stays elastic enough for leather.

How long is the mix workable?

Only for a limited time. Once mixed, use it promptly.

Is Crosslinker CD suitable for all COLOURLOCK dyes?

Yes. It works with Leather Fresh, leather dye, top-coats and the system's plastic dyes.

Last updated: 03.12.2025 — Author: Daniel (Detailing1)