LGA531
LGA531 Thixotropic PU lacquer, 65 gloss — clear 2K polyurethane topcoat for electrostatic spraying
Clear two-pack polyurethane topcoat, 65 gloss. Thixotropic, so it hangs on verticals and carved/turned profiles without runs; dries fast and leaves a pleasant, smooth feel. Built for electrostatic spraying (chairs, open-frame and turned parts) but sprays fine conventionally too. Mixes 2:1 with hardener (50 %) and takes 10–30 % S50/S70/S80 thinner. Interior use only.
- Chairs (beech etc.) and open-frame furniture
- Carved, routed and turned furniture parts
- Tables and table legs
- Solid wood and MDF parts
- Topcoat over PU sealer on an electrostatic line
Mix calculator
Ask about LGA531
Answers are based on the LGA531 data and the products it mixes with.
Mixing matrix
- % by weight: 50 %official% by volume: 50 %official
Standard option per the Technocolor page — any of the three hardeners.
Fixed 2:1 (lacquer : hardener), same figure by weight and by volume (lacquer and hardener both ≈ 0.97 g/ml). Хольцком lists LNB42/LNB77 at 50/50. Per Milesi/dealer: LNB42 and LNB77 for conventional spraying, LNB5 (= LNB05) for electrostatic bells/discs (better wetting); LNB42 gives better filling.
- LNB500Hardener% by weight: 50 %datasheet
Hardener on the original Milesi TDS (not listed by Technocolor).
TDS: 'for better filling power use LNB42 (50 %) instead of LNB500'. The 3 h pot life is quoted with LNB500.
- % by weight: 50–60 %dealer
Alternative from the Hungarian Milesi distributor (series page).
LNB42 is the main one; LNB05, 42A, 77, 190 and 111 also allowed. LNB190 is the better non-yellowing choice for pale woods. Page is titled LGA 531 but describes 45 gloss — treat with care; Technocolor states 50 % only.
- LNB (series)Hardener% by volume: 50 %dealer
EDID (Milesi Bulgaria) electrostatic schedule.
LNB-series hardener at 50 %.
- % by weight: 10–30 (typ. 20) %official% by volume: 10–30 %official
Standard range per the Technocolor page.
S50 is the universal medium-evaporation thinner (default, verticals). S70/S80 are slow: above ~25 °C, large parts, better flow-out; more dust pick-up and sag risk. Thinner choice doesn't change cure time. Default 20 % is an engineering mid-point of the range.
- LZC13Thinner% by volume: 25–30 %dealer
Electrostatic spraying (EDID schedule).
LZC13 is Milesi's dedicated electrostatic thinner (controlled conductivity). EDID's worked example is actually 35 %, slightly above its stated range. Not listed by Technocolor — if spraying electrostatically with S50/S70/S80, check mix resistivity.
- % by weight: 20–30 %dealer
Below 23 °C use LZC1026, above use LZC8643 (milesi.hu).
Original Milesi thinners; Technocolor equivalents are S50 (universal) and S70/S80 (slow). Page titled LGA 531 but describes 45 gloss.
- LZC1026Thinner% by weight: 10–30 %datasheet
Thinner on the original Milesi TDS; same 10–30 % range Technocolor gives for S50/S70/S80.
Technocolor equivalent: S50/S70/S80.
| Role | Material | % by weight | % by volume | When |
|---|---|---|---|---|
| Hardener | LNB42 / LNB77 / LNB5 | 50 %official | 50 %official | Standard option per the Technocolor page — any of the three hardeners.Fixed 2:1 (lacquer : hardener), same figure by weight and by volume (lacquer and hardener both ≈ 0.97 g/ml). Хольцком lists LNB42/LNB77 at 50/50. Per Milesi/dealer: LNB42 and LNB77 for conventional spraying, LNB5 (= LNB05) for electrostatic bells/discs (better wetting); LNB42 gives better filling. |
| Hardener | LNB500 | 50 %datasheet | — | Hardener on the original Milesi TDS (not listed by Technocolor).TDS: 'for better filling power use LNB42 (50 %) instead of LNB500'. The 3 h pot life is quoted with LNB500. |
| Hardener | LNB42 / LNB05 / LNB42A / LNB77 / LNB190 / LNB111 | 50–60 %dealer | — | Alternative from the Hungarian Milesi distributor (series page).LNB42 is the main one; LNB05, 42A, 77, 190 and 111 also allowed. LNB190 is the better non-yellowing choice for pale woods. Page is titled LGA 531 but describes 45 gloss — treat with care; Technocolor states 50 % only. |
| Hardener | LNB (series) | — | 50 %dealer | EDID (Milesi Bulgaria) electrostatic schedule.LNB-series hardener at 50 %. |
| Thinner | S50 / S70 / S80 | 10–30 (typ. 20) %official | 10–30 %official | Standard range per the Technocolor page.S50 is the universal medium-evaporation thinner (default, verticals). S70/S80 are slow: above ~25 °C, large parts, better flow-out; more dust pick-up and sag risk. Thinner choice doesn't change cure time. Default 20 % is an engineering mid-point of the range. |
| Thinner | LZC13 | — | 25–30 %dealer | Electrostatic spraying (EDID schedule).LZC13 is Milesi's dedicated electrostatic thinner (controlled conductivity). EDID's worked example is actually 35 %, slightly above its stated range. Not listed by Technocolor — if spraying electrostatically with S50/S70/S80, check mix resistivity. |
| Thinner | LZC1026 / LZC8643 | 20–30 %dealer | — | Below 23 °C use LZC1026, above use LZC8643 (milesi.hu).Original Milesi thinners; Technocolor equivalents are S50 (universal) and S70/S80 (slow). Page titled LGA 531 but describes 45 gloss. |
| Thinner | LZC1026 | 10–30 %datasheet | — | Thinner on the original Milesi TDS; same 10–30 % range Technocolor gives for S50/S70/S80.Technocolor equivalent: S50/S70/S80. |
Percentages are per 100 parts of component A.
Characteristics
- Solids
- 44 ± 1 % (part A, as supplied)dealer
- Mixed solids %
- ≈ 33–40 % mixed A+B; ≈ 26–36 % at spray viscosityrecommended
- Viscosity
- 32 ± 3 sdealer
- Spray viscosity
- 18–22 s DIN4 / Ford 4 (≈ 12–14 s Ford 6)recommended
- Density
- 0.970 ± 0.01 g/ml (part A)datasheet
- Gloss
- 65 GUofficial
- Pot life
- 3 h at 20 °Cdatasheet
- Drying · Dust-free
- 15 mindatasheet
- Drying · Touch-dry
- 45 mindatasheet
- Drying · Through-hard (h)
- 4 hdatasheet
- Drying · Full cure
- 8 hdealer
- Drying · Sand or stack
- stack/pack ≥ 24 h; light denib between coats after ≥ 3–4 hrecommended
- Drying · Conditions
- 20 °C / 70 % RH (Milesi TDS); optimum 15–23 °C, out of direct sun (milesi.hu)
- Hardness
- hard after 24 hdealer
- Thixotropy
- yesofficial
- Feel
- pleasant soft-smooth feelofficial
- Fast drying
- fast dryingofficial
- Interior or exterior
- interior onlydealer
- Lightfastness
- moderate — expect slight ambering with aromatic hardenersrecommended
- Chemical resistance
- good household-chemical/water resistance typical of 2K PU once fully cured (≥ 7 days)recommended
- Electrostatic suitability
- designed for electrostatic applicationdealer
- Characteristics reference
- definitions of each characteristicofficial
- Wetting
- excellent no-sag (verticals) and filling; good wetting by hand and on automatic lines; soft touchdealer
Colours
- LGA531 · clear
Application
Conventional spray
- Nozzle
- ≥ 1.7dealer
- Pressure · air
- 2.5–3.5 barrecommended
- Spray viscosity
- 18–22 s DIN4recommended
- Consumption
- 80–100 g/m²official
- Wet film
- 80–110 µmrecommended
- Coats
- 1dealer
- Flash-off
- 10–15 minrecommended
- Recoat
- wet-on-wet within ~10 min, or after ≥ 4 h with light denibrecommended
- Sanding between coats
- P320–P400 / grey pad, only if a second topcoat is applied, after ≥ 4 hrecommended
Distance 20–25 cm, 50 % overlap. On chairs, hit inside corners and end grain first, then the open faces.
HVLP
- Nozzle
- 1.7–1.9 mmrecommended
- Pressure · air
- 1.8–2.2 barrecommended
- Spray viscosity
- 18–20 s DIN4recommended
- Consumption
- 80–100 g/m²official
- Coats
- 1–2recommended
HVLP gives less bounce-back on carvings, but a thixotropic lacquer flows out less — don't let the fan go dry.
Electrostatic
- Nozzle
- 1.2–1.5 mm (pneumatic electrostatic gun) / 0.23–0.28 mm = 09–11 thou tip (airmix electrostatic)recommended
- Pressure · fluid
- 20 barofficial
- Pressure · air
- 1–2 barrecommended
- Voltage (kV)
- 60–80 kVrecommended
- Spray viscosity
- 18–22 s DIN4recommended
- Consumption
- 80–100 g/m²official
- Coats
- 1dealer
The lacquer's primary method (TDS: air-assisted electrostatic spraying of turnings, chairs and frames). Ground the part; LNB5 (= LNB05) hardener is the one recommended for electrostatic bells/discs; thin with electrostatic thinner (LZC13) or check mix resistivity when using S-thinners. See the official methods page.
Airmix (air-assisted airless)
- Nozzle
- 0.23–0.28 mm (09–11 thou fine-finish tip)recommended
- Pressure · fluid
- 20 barofficial
- Pressure · air
- 1–2 barrecommended
- Consumption
- 80–100 g/m²official
Not listed by Technocolor; the Milesi TDS names air-assisted (electrostatic) spraying as the main method — suits production chair/frame work.
Process and compatibility
- Substrate preparation
- Sand wood P150–P180 and de-dust; sand the sealer P280–P320 (or 150–180 sanding sponge) before the topcoat.dealer
- Stain
- Water stain (CFT) before sealingdealer
- Sanding
- Sealer: intermediate sand after 3 h with P280–P320; topcoat within max 4 h of sanding.dealer
- Temperature and humidity
- 15–23 °C, out of direct sunlight (milesi.hu); TDS data at 20 °C / 70 % RHdealer
- Don'ts
- Don't use outdoors — interior-only lacquer.
- Don't drift from 2:1 with hardener — short or over-catalysed mixes lose hardness and gloss uniformity.
- Don't spray past pot life (budget 2–3 h).
- Don't spray below 15 °C or in direct sun.
- Don't sand or polish the final 65-gloss coat — the sheen goes patchy.
- Don't stack or pack before 24 h.
- Sealer to topcoat (h)
- 2–4 hdatasheet
Storage
- Shelf life
- 8 months from deliverydatasheet
- Storage temperature
- 18–25 °C, tightly closed, protected from moisturedatasheet
- Packaging
- 25 ldealer
Safety: Highly flammable (H225); irritates skin, eyes and airways; may damage organs on prolonged exposure (H373). The sister LGA532 SDS lists 30–50 % xylene plus ethylbenzene and isobutyl acetate; LNB hardeners contain isocyanates. Spray in an extracted booth, wear an A2P2 respirator (or air-fed), nitrile gloves and goggles; clean the gun straight away.
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).
- official: properties, spray/electrostatic 80–100 g/m², hardener LNB42/LNB77/LNB5 50/50 %, thinner S50/S70/S80 10–30/10–30 %
- dealer (Хольцком): viscosity 32 ± 3 s CF-6, solids 44 ± 1 %, full dry 8 h at 20 °C, interior, uses, 25 l pack, LNB42/LNB77 50/50
- Milesi TDS LGA531÷535 (series): SG 0.970, solids 44 ± 2 %, 32 ± 3 s Ford ISO6, LNB500 50 %, LZC1026 10–30 %, pot life 3 h, gloss 65 ± 2 (UNICHIM 411), spray 80–100 g/m², dust 15′ / touch 45′ / hard 4 h, 8 months, 18–25 °C, over LBA523
- Ukrainian Milesi dealer (LGA532/533 card, series data): LNB5/05 electrostatic, LNB42/LNB77 conventional, SG 0.970/0.973, solids 43 ± 3 %, pot life 2 h, dust 15′ / touch 45′ / deep dry 8 h
- t-colormarket search: LGA531 not listed (checked search + PU lacquer category pages 1–3)
- EDID Milesi Bulgaria: series LGA531–535 gloss levels, clear electrostatic thixotropic PU, 25 l
- EDID electrostatic schedule: LBA528 → LGA53x, LNB 50 %, LZC13 25–30 %, dry 40–45 min, hard 24 h, 150 g/m²
- milesi.hu 'LGA 531' (but 45 gloss): conventional ≥ 1.7 mm or electrostatic, dust-free 10–15 min, touch 45 min, hard 4 h, LZC1026/LZC8643 20–30 %, LNB42 50–60 %, 110–130 (150) ml/m², 8 months, 15–23 °C, prep P150–180 / sealer P280–320
- sister LGA532 SDS: H225/H315/H319/H335/H373, xylene 30–49.9 %, ethylbenzene, isobutyl acetate
- official methods page: electrostatic, airmix (1–2 bar air) descriptions
- official S50 universal, medium
- official S70 slow
Not covered by the sources
- No LGA531-only TDS: the Milesi sheet covers LGA531÷535 (series) and uses LNB500/LZC1026, not Technocolor's LNB42/77/5 + S50/70/80; drying/pot-life with Technocolor hardeners not published
- t-colormarket.ru does not carry LGA531 (search returns no match) — no 'Все технические характеристики' block available
- Mixed (A+B) solids and spray viscosity not published (derived)
- No official nozzle/pressure data except '≥ 1.7 mm conventional' (milesi.hu) and generic airmix pressures on the official methods page
- No LGA531-specific SDS; safety taken from sister LGA532 SDS
- Hardness (numeric), lightfastness, chemical resistance, elasticity not published
- Whether S50/S70/S80 give adequate resistivity for electrostatic spraying is not stated
- Viscosity conflict: TDS/Хольцком 32 ± 3 s Ford ISO6 vs sinay 40 ± 4 s CF4 (likely a different cup or transcription error)