PolyurethaneLacquer

LGA22

LGA22 clear 2K polyurethane lacquer, matt (20 gloss)

Two-pack high-solids clear polyurethane topcoat, matt (20 gloss). Good filling power, hard surface and a very smooth feel. Catalysed with LNB77 at 50 % by weight, thinned 10–30 % with LZC1026/LZC1051. Spray (conventional, airmix, vacuum) or curtain coat at 120–140 g/m². Topcoat only — never straight onto bare wood, seal with a PU sealer first.

matt topcoat for furniture, doors, frames and mouldings
chairs and turned parts
veneered or solid-wood fronts over PU sealer
over CLT (Kromolux) stain + PU sealer

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Mix calculator

Ready-to-spray batch

Hardener50.0 %

LNB77: 50.0 % — fixed by the datasheet

When: Standard, the official choice.

Thinner20.0 %

When: Normal conditions, 18–22 °C. 20 % gives 16 ± 2 s Ford 4.

AdditiveAdd to the mix

Ratio 100 : 50.0 : 20.0

Component	Weigh out
LGA22part A	294 g
LNB77Hardener	147 g
LZC1026 / LZC1051Thinner	58.8 g
Total	500 g

Covers roughly 3.85 m² at 130 g/m².

Ask about LGA22

Answers are based on the LGA22 data and the products it mixes with.

Mixing matrix

LNB77Hardener
% by weight: 50 %official% by volume: 50 %official
Standard, the official choice.
LNB77 is the hardener for PU primers and matt lacquers (dealer, MILESI), solids 25 ± 1 % (dealer) / 23.5 ± 2 % (2015 TDS) / 23.4 ± 2 % (Italian LNB77 TDS). No yellowing-resistance claim — over pale bases prefer LNB20. TDS volume figure is 51.1 %; the site rounds to 50 %.
LNB7Hardener
% by weight: 50 %datasheet% by volume: 50.1 %datasheet
When you want faster drying (dust free 15 min, touch 45 min).
Sheen drops to 15 ± 1 GU. The 2007 TDS also allows 50 % LNB7. Not on the Technocolor site and not found at t-colormarket.ru — check availability.
LNB20Hardener
% by weight: 50 %datasheet% by volume: 51.1 %datasheet
Over pale timbers, whitened oak, light stains — less yellowing.
TDS: 'good yellowing resistance'; pot life 3 h. Sold by t-colormarket.ru (MILESI, 'for the LBA and LGA series'); Technocolor uses it with KGA1/KKR1/LKR6.
LNB14 / LNB500Hardener
% by weight: 50 %datasheet
When faster drying and higher hardness are needed.
Sheen about 10 units lower than with LNB77. Not listed by Technocolor.
LZC1026 / LZC1051Thinner
% by weight: 10–30 (typ. 20) %official% by volume: 10–30 %official
Normal conditions, 18–22 °C. 20 % gives 16 ± 2 s Ford 4.
LZC1026 is the universal medium thinner; LZC1051 is the PU 'extra' medium thinner (Milesi LZC TDS). Italian dealer quotes 15–20 %.
LZC8643Thinner
% by weight: 30–50 %datasheet
Above 25 °C.
Slow PU thinner — longer open time and better flow in the heat; TDS calls for 30–50 %.
LZC1051 / LTC4Additive
% by weight: 2–3 %datasheet
To improve flow-out.
On top of the normal thinning.

Role	Material	% by weight	% by volume	When
Hardener	LNB77	50 %official	50 %official	Standard, the official choice.LNB77 is the hardener for PU primers and matt lacquers (dealer, MILESI), solids 25 ± 1 % (dealer) / 23.5 ± 2 % (2015 TDS) / 23.4 ± 2 % (Italian LNB77 TDS). No yellowing-resistance claim — over pale bases prefer LNB20. TDS volume figure is 51.1 %; the site rounds to 50 %.
Hardener	LNB7	50 %datasheet	50.1 %datasheet	When you want faster drying (dust free 15 min, touch 45 min).Sheen drops to 15 ± 1 GU. The 2007 TDS also allows 50 % LNB7. Not on the Technocolor site and not found at t-colormarket.ru — check availability.
Hardener	LNB20	50 %datasheet	51.1 %datasheet	Over pale timbers, whitened oak, light stains — less yellowing.TDS: 'good yellowing resistance'; pot life 3 h. Sold by t-colormarket.ru (MILESI, 'for the LBA and LGA series'); Technocolor uses it with KGA1/KKR1/LKR6.
Hardener	LNB14 / LNB500	50 %datasheet	—	When faster drying and higher hardness are needed.Sheen about 10 units lower than with LNB77. Not listed by Technocolor.
Thinner	LZC1026 / LZC1051	10–30 (typ. 20) %official	10–30 %official	Normal conditions, 18–22 °C. 20 % gives 16 ± 2 s Ford 4.LZC1026 is the universal medium thinner; LZC1051 is the PU 'extra' medium thinner (Milesi LZC TDS). Italian dealer quotes 15–20 %.
Thinner	LZC8643	30–50 %datasheet	—	Above 25 °C.Slow PU thinner — longer open time and better flow in the heat; TDS calls for 30–50 %.
Additive	LZC1051 / LTC4	2–3 %datasheet	—	To improve flow-out.On top of the normal thinning.

Percentages are per 100 parts of component A.

Characteristics

Properties (official): Excellent 'hiding' (Milesi: 'very good filling power' — for a clear lacquer read this as build/fill, not opacity); Good surface hardness; Can be applied by conventional spray, airmix, vacuum spray and curtain coaterofficial
Solids: 46 ± 2 % part A by weightdatasheet
Ready-mix solids % · LNB77: 38.0 ± 2 % (A + 50 % LNB77 + 20 % LZC1026)datasheet
Ready-mix solids % · LNB7: 38.2 ± 2 %datasheet
Ready-mix solids % · LNB20: 38.5 ± 2 %datasheet
Ready-mix solids % · 2007 series: 40 ± 2 % (A + LNB77)datasheet
Viscosity · Part A: 33 ± 3 sdatasheet
Viscosity · Part A (2007): 42 ± 2 sdatasheet
Viscosity · Ready to spray: 16 ± 2 sdatasheet
Viscosity · Ready to spray (2007): 23 ± 2 sdatasheet
Density · Part A: 0.992 ± 0.030 kg/ldatasheet
Density · LNB77: 0.960 kg/ldatasheet
Density · LZC1026: 0.875 (US TDS) / 0.850 ± 0.01 (LZC TDS) kg/ldatasheet
Density · LZC1051: 0.864 ± 0.01 kg/ldatasheet
Gloss: 20 (nominal); 22 ± 2 GU with LNB77/LNB20, 15 ± 1 GU with LNB7 GU 60°datasheet
Pot life · LNB77: 4 h at 20 °Cdatasheet
Pot life · LNB7: 4 hdatasheet
Pot life · LNB20: 3 hdatasheet
Pot life · Practical: 3 hrecommended
Drying · Dust-free · 2007 catalogue: 15 mindatasheet
Drying · Dust-free · LNB77: 20 mindatasheet
Drying · Dust-free · LNB7: 15 mindatasheet
Drying · Dust-free · LNB20: 15 mindatasheet
Drying · Touch-dry · 2007 catalogue: 45 mindatasheet
Drying · Touch-dry · LNB77: 55 mindatasheet
Drying · Touch-dry · LNB7: 45 mindatasheet
Drying · Touch-dry · LNB20: 45 mindatasheet
Drying · Full cure · 2007 catalogue: 4 h (hard dry)datasheet
Drying · Full cure · LNB77: 18 h (hard dry / complete drying)datasheet
Drying · Full cure · LNB7: 18 h (hard dry / complete drying)datasheet
Drying · Full cure · LNB20: 18 h (hard dry / complete drying)datasheet
Drying · Sand or stack: 18–24 hrecommended
Drying · Conditions: 18–22 °C, 65–70 % RH (TDS)
Hardness: good surface hardness with excellent smoothnessdatasheet
Lightfastness · LNB77: not stated — assume it yellows more than LNB20recommended
Lightfastness · LNB20: good yellowing resistancedatasheet
Thixotropy: norecommended
Filling: very good filling powerdatasheet

Colours

LGA22 · clear

Application

Conventional spray

Nozzle: 1.6–1.8 mmrecommended
Pressure · air: 2.5–3.5 bar at gun inletrecommended
Spray viscosity: 16 ± 2 s Ford 4datasheet
Consumption: 120–140 g/m² per coatofficial
Wet film: 124–155 µmdatasheet
Coats: 1–2 coatsrecommended
Flash-off: 10–15 min before oven/stacking arearecommended
Recoat: 18–24 h, then scuff P320–P400recommended

Consumption/viscosity sourced; gun settings are a recommendation.

HVLP

Nozzle: 1.4–1.6 mmrecommended
Pressure · air: 2–2.2 bar at inlet with trigger pulled (≤ 0.7 bar at cap)recommended
Spray viscosity: 16 ± 2 s Ford 4datasheet
Consumption: 120–140 g/m²official
Wet film: 124–155 µmdatasheet

15–20 cm distance, 50–75 % overlap. Matt lacquers show uneven film as sheen patches — keep a wet edge.

Airmix (air-assisted airless)

Nozzle: 0.23–0.28 mm (09–11 thou), 40–50° fanrecommended
Pressure · fluid: 40–80 barrecommended
Pressure · air: 1–2 barofficial
Consumption: 120–150 g/m²datasheet
Wet film: 124–155 µmdatasheet

Electrostatic

2007 TDS lists electrostatic spray without figures. Milesi's electrostatic thinner is LZC50 (>800 MΩ·cm); with plain LZC1026 transfer may suffer — test.

Curtain coater

Consumption: 120–140 g/m²official

TDS: curtain-coat OK, but not in lines that stack straight after tunnel drying.

Vacuum coater

Listed officially; no parameters published.

Dipping

2007 TDS lists dipping without parameters; not listed by Technocolor.

Brush roller

2007 TDS lists brush/roller without parameters; not listed by Technocolor. Small parts/touch-up only.

Process and compatibility

Substrate preparation: Over PU sealer only — never on bare wood. Milesi schedule: walnut veneer/solid → CLT (Kromolux) stain → 2–3 coats LBA26 PU sealer → LGA22. Sand sealer P320–P400 and dust off. Timber at 8–14 % MC.datasheet
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 fully.recommended
Temperature and humidity: optimum 18–22 °C, 65–70 % RH, timber 8–14 %; apply only at 15–30 °C; drying not below 15 °C, RH 50–70 %datasheet
Don'ts: don't apply onto bare wood
don't use the mix past 3 h
don't stack before hard dry (18 h)
don't apply below 15 °C or above 30 °C
above 25 °C don't thin with plain LZC1026 — use 30–50 % LZC8643

Storage

Shelf life: 18 months from production (2015 TDS); 8 months from delivery (2007 TDS)datasheet
Storage temperature: 0–35 °C, ventilated, out of the sun (2015); 18–25 °C, tightly closed (2007)datasheet
Packaging: 5 ldealer

Safety: Solvent-borne 2K, isocyanate in the hardener. Spray booth, organic-vapour respirator, gloves, no naked flames, spark-proof equipment. See SDS.

Mixed into

LNB500 / LNB77

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

dealer (t-colormarket.ru) page — product delisted, no Russian dealer characteristics
chemical resistance (EN 12720) — not published
elasticity / cold-check — not published
sanding/stacking time and overcoat window — not published (derived)
nozzle/pressure — not published (derived)
official volume % for LNB77 (50) vs TDS (51.1) — minor discrepancy
hard dry 4 h (2007 TDS) vs 18 h (2015 TDS) — conflicting editions
no Technocolor finishing schedule uses LGA22
LNB7/LNB14/LNB500 not on the Technocolor site or t-colormarket.ru — availability unknown (LNB20 IS sold by t-colormarket.ru)
SDS / hazard classification not retrieved