PolyurethaneLacquerGloss: 15 GU at 60°

LGA2AA45

LGA2AA45 clear 2K polyurethane lacquer, 15 gloss

Two-pack clear polyurethane lacquer, matt (15 gloss), a furniture topcoat. Officially: excellent scratch resistance to EN 15186, good flow-out and hardness; certified to EN 71/1 (toy-safety standard, so it suits children's furniture). Hardener LNB20, LNB6AA0 or LNB77 at 50 % by weight and volume; thinner S50/S80 at 20–40 %. Spray-applied at 130–150 g/m² per coat.

matt clear topcoat over PU sealer on solid wood and veneered furniture
doors, tabletops, carcass furniture where scratch resistance matters
children's furniture (EN 71 certificate)

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Mix calculator

Ready-to-spray batch

Hardener50.0 %

LNB20: 50.0 % — fixed by the datasheet

When: Pale woods, limed oak, light tints — wherever ambering matters. On the Milesi LGA20-series TDS LNB20 is rated 'good yellowing resistance', dust/touch dry faster (15/45 min vs 20/55 min for LNB77), same 18 h hard dry; shorter pot life — 3 h.

Thinner25.0 %

When: Default, normal evaporation — 18–25 °C, vertical surfaces.

Ratio 100 : 50.0 : 25.0

Component	Weigh out
LGA2AA45part A	286 g
LNB20Hardener	143 g
S50Thinner	71.4 g
Total	500 g

Covers roughly 3.57 m² at 140 g/m².

Pot life of the mix: 3–4 h at 20 °C.

Ask about LGA2AA45

Answers are based on the LGA2AA45 data and the products it mixes with.

Mixing matrix

LNB20Hardener
% by weight: 50 %official% by volume: 50 %official
Pale woods, limed oak, light tints — wherever ambering matters. On the Milesi LGA20-series TDS LNB20 is rated 'good yellowing resistance', dust/touch dry faster (15/45 min vs 20/55 min for LNB77), same 18 h hard dry; shorter pot life — 3 h.
Dealer describes LNB20 as 'for PU primers and matt lacquers, LBA and LGA series'.
LNB6AA0Hardener
% by weight: 50 %official% by volume: 50 %official
Officially approved; no guidance on when to prefer it. Not stocked by the dealer, no TDS found.
Same 'AA' code generation as the lacquer, so probably its matched hardener — confirm with Technocolor's technologist.
LNB77Hardener
% by weight: 50 %official% by volume: 50 %official
The standard LGA2-line hardener (the only official one for LGA22); longer pot life (4 h).
Per the LGA20-series TDS: dust free 20 min, touch 55 min, hard dry 18 h (same as LNB20); no yellowing-resistance rating — on pale wood prefer LNB20.
S50Thinner
% by weight: 20–40 (typ. 25) %official% by volume: 20–40 %official
Default, normal evaporation — 18–25 °C, vertical surfaces.
Doesn't change cure time.
S80Thinner
% by weight: 20–40 %official% by volume: 20–40 %official
Slow — above ~25 °C, large flat panels, better flow-out of the matt coat.
More dust pick-up and sag risk on verticals; doesn't change cure time.

Role	Material	% by weight	% by volume	When
Hardener	LNB20	50 %official	50 %official	Pale woods, limed oak, light tints — wherever ambering matters. On the Milesi LGA20-series TDS LNB20 is rated 'good yellowing resistance', dust/touch dry faster (15/45 min vs 20/55 min for LNB77), same 18 h hard dry; shorter pot life — 3 h.Dealer describes LNB20 as 'for PU primers and matt lacquers, LBA and LGA series'.
Hardener	LNB6AA0	50 %official	50 %official	Officially approved; no guidance on when to prefer it. Not stocked by the dealer, no TDS found.Same 'AA' code generation as the lacquer, so probably its matched hardener — confirm with Technocolor's technologist.
Hardener	LNB77	50 %official	50 %official	The standard LGA2-line hardener (the only official one for LGA22); longer pot life (4 h).Per the LGA20-series TDS: dust free 20 min, touch 55 min, hard dry 18 h (same as LNB20); no yellowing-resistance rating — on pale wood prefer LNB20.
Thinner	S50	20–40 (typ. 25) %official	20–40 %official	Default, normal evaporation — 18–25 °C, vertical surfaces.Doesn't change cure time.
Thinner	S80	20–40 %official	20–40 %official	Slow — above ~25 °C, large flat panels, better flow-out of the matt coat.More dust pick-up and sag risk on verticals; doesn't change cure time.

Percentages are per 100 parts of component A.

Characteristics

Properties (official): Excellent scratch resistance (EN 15186); Good flow-out; Hardness; Certified to EN 71/1official
Gloss: 15 GU at 60°official
Scratch resistance: excellentofficial
Chemistry: 2K solvent-borne polyurethane (polyol base + isocyanate hardener)official
Pot life: 3–4 h at 20 °Crecommended
Drying · Dust-free: 15–20 minrecommended
Drying · Touch-dry: 45–55 minrecommended
Drying · Sand or stack: 18–24 hrecommended
Drying · Full cure: 18–24 h to hard dry; full chemical cure ~7 daysrecommended
Drying · Conditions: 18–22 °C, 65–70 % RH (conditions of the sibling Milesi TDS)
Viscosity · Ready to spray: 16–20 srecommended
Thixotropy: norecommended
Lightfastness · Why ru: Данные по отвердителям взяты из TDS родственной серии; по пожелтению самого LGA2AA45 данных нет.

Application

Conventional spray

Nozzle: 1.6–1.8 mmrecommended
Pressure · air: 2.5–3.5 bar at gun inletrecommended
Pressure · fluid: 0.8–1.5 bar (pressure pot only)recommended
Spray viscosity: 16–20 s DIN4recommended
Consumption: 130–150 g/m² per coatofficial
Wet film: 135–160 µmrecommended
Coats: 1–2 topcoatsrecommended
Flash-off: 10–15 min before moving to drying arearecommended
Recoat: 16–24 h, then scuff P320–P400recommended
Sanding between coats: Sealer: P320–P400 before topcoat. Don't sand or polish the final matt coat.recommended

Consumption is official; gun settings are our recommendation.

HVLP

Nozzle: 1.4–1.6 mmrecommended
Pressure · air: 2–2.2 bar at inlet with trigger pulled (≤ 0.7 bar at the cap)recommended
Spray viscosity: 16–18 s DIN4recommended
Consumption: 130–150 g/m² per coatofficial
Coats: 1–2 topcoatsrecommended

Distance 15–20 cm, overlap 50–75 %, fan fully open, 10–13 CFM. Two criss-cross passes beat one heavy pass. recommended

Airmix (air-assisted airless)

Nozzle: 0.23–0.28 mm (09–11 thou), 20–40° fanrecommended
Pressure · fluid: 60–90 barrecommended
Pressure · air: 1–2 bar atomising airofficial
Spray viscosity: 18–22 s DIN4recommended
Consumption: 130–150 g/m² per coatofficial

Officially only 'spray' is listed; airmix is our recommendation for production work.

Process and compatibility

Substrate preparation: Over PU sealer only, never bare wood. Timber at 8–14 % MC, sanded P180–P220; stain → 2–3 coats PU sealer → sand P320–P400, dust off → LGA2AA45.recommended
Sanding: Sealer before topcoat P320–P400. Don't sand or polish the matt topcoat — you'll get shiny patches; for a repair sand the whole face and recoat.recommended
Temperature and humidity: apply at 15–30 °C (optimum 18–22 °C, RH 65–70 %); dry at ≥ 15 °C, RH 50–70 %; timber 8–14 % MC; above ~25 °C use S80recommended
Don'ts: don't apply onto bare wood
don't use the mix past 3 h (LNB20) / 4 h (LNB77)
don't stack before hard dry
don't sand or polish the matt finish
don't apply below 15 °C

Storage

Safety: Solvent-borne 2K; isocyanates in the hardener. Spray booth, organic-vapour (A2) respirator, nitrile gloves, no naked flames, spark-proof equipment. Check the SDS.

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 TDS found for LGA2AA45 (web search budget exhausted; guessed Milesi TDS URLs 404); no dealer card at t-colormarket.ru
solids content (part A and ready mix)
part A viscosity and density
measured gloss per hardener
LNB6AA0 hardener: no data at all (not on dealer, no TDS) — which situations it is meant for
chemical resistance and elasticity ratings
EN 71 part — page says 71/1; certificate not seen
no official finishing schedule uses LGA2AA45
pot life and drying times — only from sibling LGA20-series TDS
shelf life/storage — only from sibling TDS; packaging unknown
solids/viscosity/density — only sibling-series reference values
lightfastness per hardener — only LNB20's 'good yellowing resistance' rating from sibling TDS