HardenersHardener

AC202

AC202 Hardener for gloss acrylic coatings

Isocyanate hardener (part B) for Technocolor 100-gloss acrylic clears. Solids 38 ± 1 % (Holzkom/timb.ru). On t-colormarket it is the specified hardener for ATL21226, the fastest-drying gloss acrylic clear in the range (40 %), and the alternative to AC200 for the high-solids clear ATL203 (70 %). It has no page of its own at Technocolor or t-colormarket, and it is not in the 2025-2026 catalog or its hardener chart — the catalog lists only AC200 for ATL203.

Part B for gloss acrylic clears (Holzkom)
Fast-drying gloss acrylic clear ATL21226 — 40 %
High-solids gloss acrylic clear ATL203 — 70 %, alternative to AC200
Chrome special effect: ATL21226 under and over APL21081 chrome (special-effects catalog)
Kitchen and bathroom furniture, polished high gloss (per ATL21226/ATL203 application)

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AC202 is a component, not a base. Choose the material (part A) you are mixing it into — the proportions come from that base material's datasheet.

Ask about AC202

Answers are based on the AC202 data and the products it mixes with.

Mixing matrix

ATL21226Product
% by weight: 40 %dealer% by volume: 40 %dealer
ATL21226 100-gloss acrylic clear — the fastest-drying in the range. Fixed 40 % by weight and by volume. AC202 is the only hardener listed.
Stir before use. Pot life is only 1 h — mix small batches. Polish no sooner than 3 h.
ATL203Product
% by weight: 70 %dealer% by volume: 70 %dealer
High-solids gloss acrylic clear ATL203 (part A solids 51 ± 1 % per dealer). Dealer lists 'AC200 / AC202' — AC202 as an alternative to AC200, 70 %.
The 2025-2026 catalog lists only AC200 for ATL203, at 70–100 %; the up-to-100 % range is not confirmed for AC202 — stick to 70 %.
AC200Hardener
On ATL203, AC200 is the primary hardener (catalog 70–100 %, dealer 70 %); AC202 is the alternative. No alternative is listed for ATL21226.

Role	Material	% by weight	% by volume	When
Product	ATL21226	40 %dealer	40 %dealer	ATL21226 100-gloss acrylic clear — the fastest-drying in the range. Fixed 40 % by weight and by volume. AC202 is the only hardener listed.Stir before use. Pot life is only 1 h — mix small batches. Polish no sooner than 3 h.
Product	ATL203	70 %dealer	70 %dealer	High-solids gloss acrylic clear ATL203 (part A solids 51 ± 1 % per dealer). Dealer lists 'AC200 / AC202' — AC202 as an alternative to AC200, 70 %.The 2025-2026 catalog lists only AC200 for ATL203, at 70–100 %; the up-to-100 % range is not confirmed for AC202 — stick to 70 %.
Hardener	AC200	—	—	On ATL203, AC200 is the primary hardener (catalog 70–100 %, dealer 70 %); AC202 is the alternative. No alternative is listed for ATL21226.

Percentages are per 100 parts of component A.

Characteristics

Solids: 38 ± 1 %dealer
Chemistry: hardener for acrylic coatings (isocyanate)dealer
Chemistry detail: polyisocyanate (NCO) hardener; aliphatic type possible but unconfirmedrecommended
Comparison with AC200: AC202 solids 38 ± 1 % vs AC200 44 ± 1 %; same 70 % dose on ATL203dealer
Density: 0.95–1.05 kg/Lrecommended
Pot life: 1–4 h at 20 °Cdealer
Drying · By base: ATL21226, ATL203
Drying · Conditions: 20 °C
Lightfastness: stated for the cured mixes: «устойчивость к пожелтению с течением времени» (ATL21226, ATL203)dealer
Moisture sensitivity: isocyanate hardeners are moisture-sensitiveofficial
Base consumption · By base: 150 g/m², 120–150 g/m²
Base gloss · By base: 100 gloss, 100 gloss
Base viscosity · By base: 30 ± 3 s, 40 ± 2 s
Base solids · By base: 43 ± 1 %, 51 ± 1 %

Process and compatibility

Mixing: Stir the lacquer, add AC202 by weight or volume (same figure), mix, thin with S80 (or S70 on ATL203) to spray viscosity if needed, strain and let it stand 5–10 min. With ATL21226 the mix only lives about 1 h, so mix what you can spray in that time; with ATL203 you get 3–4 h.recommended
Temperature and humidity: 15–25 °C, RH ≤ 70 %recommended
Don'ts: Don't leave the can open — the hardener reacts with moisture in the air, goes hazy and thick; if it has thickened or skinned, bin it.
Don't pre-mix ATL21226 in bulk: the mix starts to thicken after an hour.
Don't polish ATL21226 before 3 h.
Never pour leftover mix back into the hardener can.

Storage

Packaging: 2.5,12.5 Ldealer
Shelf life: 12 months in the sealed original canrecommended
Storage temperature: 5–25 °Crecommended

Safety: Contains isocyanates: carbon-filter (A2) or air-fed respirator, nitrile gloves, goggles, extraction. Flammable — keep away from ignition sources. Can sensitise airways and skin.

Mixed into

ATL203 / ATL21226

Sources

Value tags: “official”, “dealer”, “catalog”, “schedule” are Technocolor data; “workshop” is from our own datasheets; “recommended” is our engineering estimate (hover to see the reasoning).

Not covered by the sources

No official t-color.ru page, no t-colormarket page (link 404), not in the 2025-2026 catalog or hardener chart; no TDS/SDS found (checked t-colormarket search, t-color.ru search, lakokraska31, ndom31, woodonline — only Holzcom shops list it)
Exact isocyanate type, NCO content, viscosity and density not published (chemistry and density derived)
Shelf life and storage temperature not published (derived)
Position on the catalog speed/yellowing chart unknown
Whether AC202 may be dosed 70–100 % on ATL203 like AC200 is not stated; when to pick AC202 over AC200 on ATL203 is not explained
Whether 'APC202' in timb.ru variant titles is a typo or a different article is unconfirmed (article numbers read AC202/2,5 and AC202/12,5)
No smaller pack (0.5/1 L) found
Isocyanate type (aliphatic vs other) unconfirmed; the catalog groups the sibling AC200 with 'gloss-lacquer hardeners', not with the aliphatic acrylic hardeners
ATL203 part-A solids conflict: dealer 51 ± 1 % vs catalog 56 %