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AcrylicConverterGloss: 25 ± 2 GU

LGA180

LGA180 clear acrylic tinting base (converter) for exterior use, 25 gloss

Two-component acrylic lacquer/primer converter by MILESI for exterior work. Tinted with KMT pastes to colours from various colour cards. Excellent weather resistance, copes with temperature and humidity swings, good wetting, elastic, improved abrasion resistance and non-yellowing. Holds well on verticals without sagging and covers well. Suitable for items used both indoors and outdoors.

  • finishing systems for exterior timber: door and window units, shutters/louvres
  • garden furniture, children's playgrounds, gazebos
  • items used both indoors and outdoors

Mix calculator

g
Hardener40.0 %

LNB99: 40.0 % — fixed by the datasheet

Thinner20.0 %

When: Slow PU thinner, the main choice; for large parts, a warm shop and better flow-out.

Additive

Ratio 100 : 40.0 : 20.0

ComponentWeigh out
LGA180part A313 g
LNB99Hardener125 g
LZC8643Thinner62.5 g
Total500 g

Covers roughly 3.57 m² at 140 g/m².

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Answers are based on the LGA180 data and the products it mixes with.

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Mixing matrix

  • LNB99Hardener
    % by weight: 40 %official% by volume: 40 %official

    LNB99 is a non-yellowing hardener for acrylics, 32 ± 1 % solids. Fixed ratio.

  • LZC8643Thinner
    % by weight: 10–30 %official% by volume: 10–30 %official

    Slow PU thinner, the main choice; for large parts, a warm shop and better flow-out.

  • LZC1051Thinner
    % by weight: 10–30 %official% by volume: 10–30 %official

    Alternative listed on the official page (standard PU thinner); the dealer lists only LZC8643.

  • KMTAdditive
    % by weight: 30 %dealer

    Tinting the converter to colour; for exterior protection it must be tinted.

    KMT series pastes, 30 % max.

Percentages are per 100 parts of component A.

Characteristics

Solids
39 %dealer
Viscosity
32 ± 2 sdealer
Gloss
25 ± 2 GUdealer
Drying · Touch-dry
120 mindealer
Drying · Sand or stack
24 hdealer
Drying · Full cure
24 hdealer
Drying · Conditions
20 °C
Lightfastness
non-yellowingofficial
Weather resistance
excellent weather resistance, resistant to temperature and humidity swingsdealer
Elasticity
elasticofficial
Abrasion resistance
improved abrasion resistancedealer
Hiding power
good hiding power (once tinted)official
Thixotropy
excellent verticality (sag-resistant on vertical surfaces)official
Wetting
high wettingdealer
Hardener solids %
32 %dealer

Colours

  • KMT tint · tinted to colours from various colour cards with KMT pastes (up to 30 %)

Application

HVLP

Consumption
140 g/m²official
Recoat
without sanding while the film is still short of touch-dry (within ~2 h); otherwise only after 24 h with sandingrecommended
Sanding between coats
P320-P400 after 24 hrecommended

Mix the base and KMT paste thoroughly before adding hardener.

Conventional spray

Consumption
140 g/m²official

Airmix (air-assisted airless)

Consumption
140 g/m²official

Best choice for runs of windows and doors: good build on verticals without runs.

Airless

Consumption
140 g/m²official

Fine for large flat parts; on profiles flow-out is worse than airmix.

Process and compatibility

Substrate preparation
For best protection always treat the substrate with XWC 30 Xilocrom impregnation before applying LGA180.dealer
Goes over
XWC30
Sanding
Bare timber P150-P180 before impregnation; between coats P320-P400 after 24 h.recommended
Don'ts
  • do not use it untinted outdoors: the converter must be tinted with pastes to protect the coating
  • do not exceed 30 % KMT paste
  • do not put it over bare exterior timber without the XWC 30 impregnation

Storage

Safety: Solvent-borne 2K material with an isocyanate hardener: spray only in an extracted booth, wearing an A2P3 respirator (or air-fed mask), gloves and eye protection. Flammable, keep away from ignition sources. Keep the hardener tin tightly closed. (General advice, not from an SDS.)

Mixed into

LNB99

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
  • pot life not published (derived 2-3 h)
  • dust-free time not published (derived)
  • viscosity measuring cup not stated by dealer (32 ± 2 s, cup unknown)
  • density / specific gravity not published by Technocolor
  • shelf life not published
  • no LGA180 Milesi TDS PDF found (edid-milesi.bg has LGA190 only, a PU parquet finish); nozzle/pressure all derived
  • a US Milesi listing indexed in search (Richelieu/HGH 'LGA180-YNPR3.5') reported 55 s ISO 6 mm, SG 1.022, dust-free 20 min, touch 120 min, hard dry 18 h, 4 h max recoat without sanding — page redirects and could not be verified, possibly a different regional formula; NOT used as data
  • XWC 30 Xilocrom and KMT pastes have no official Technocolor page or dealer listing found
  • hardener basis when tinted (on A alone or A + paste) not stated
  • not used in any official finishing schedule
  • not present in the Technocolor 2025-2026 catalog transcripts