LBR45
LBR45 PU primer, mahogany, for polyurethane foam (PU mouldings)
Two-component pigmented polyurethane primer in a mahogany shade for cast polyurethane-foam parts (mouldings, cornices, carved décor, appliqués). Excellent adhesion to PU foam, high build, sands easily, thixotropic so it holds on verticals and relief. A coloured base for faux-wood work: glaze/patina, tinted enamel and a clear topcoat go over it.
- priming cast PU-foam parts: frames, cornices, mouldings, carved décor
- mahogany-coloured base for patina/glaze and faux-wood finishes
- high-build filling coat on relief and verticals (thixotropic)
Mix calculator
Ask about LBR45
Answers are based on the LBR45 data and the products it mixes with.
Mixing matrix
- LNB71Hardener% by weight: 20 %official% by volume: 30 %official
Primary hardener: listed first on the official page, and the dealer describes it specifically as the second component of adhesion PU primers for PU foam. Fixed ratio; mix by weight.
20 % by weight = 30 % by volume (part A is much heavier than the hardener). Measuring by cup, use the volume figure; on scales, the weight figure — don't mix them up.
- LNB16405Hardener% by weight: 20 %official% by volume: 30 %official
Alternative to LNB71 (officially “LNB71/LNB16405”) at the same ratio. Handy if the shop already stocks LNB16405 for PU lacquers/enamels.
Don't blend the two hardeners in one batch.
- LZC1051Thinner% by weight: 10–30 (typ. 20) %official% by volume: 20–40 (typ. 30) %official
10 % for max build on relief or touch-up; 20 % for normal spraying; 30 % with a small tip (1.4–1.5) or in hot/dry conditions.
Thinner doesn't change cure speed, only viscosity and flow. The official weight/volume pair for the thinner doesn't reconcile with LZC1051's density — trust the weight figure.
| Role | Material | % by weight | % by volume | When |
|---|---|---|---|---|
| Hardener | LNB71 | 20 %official | 30 %official | Primary hardener: listed first on the official page, and the dealer describes it specifically as the second component of adhesion PU primers for PU foam. Fixed ratio; mix by weight.20 % by weight = 30 % by volume (part A is much heavier than the hardener). Measuring by cup, use the volume figure; on scales, the weight figure — don't mix them up. |
| Hardener | LNB16405 | 20 %official | 30 %official | Alternative to LNB71 (officially “LNB71/LNB16405”) at the same ratio. Handy if the shop already stocks LNB16405 for PU lacquers/enamels.Don't blend the two hardeners in one batch. |
| Thinner | LZC1051 | 10–30 (typ. 20) %official | 20–40 (typ. 30) %official | 10 % for max build on relief or touch-up; 20 % for normal spraying; 30 % with a small tip (1.4–1.5) or in hot/dry conditions.Thinner doesn't change cure speed, only viscosity and flow. The official weight/volume pair for the thinner doesn't reconcile with LZC1051's density — trust the weight figure. |
Percentages are per 100 parts of component A.
Characteristics
- Adhesion
- excellent adhesionofficial
- Filling power
- high build / filling powerofficial
- Sandability
- sands very wellofficial
- Thixotropy
- yesofficial
- Density
- 1.4–1.5 g/cm³ (part A, estimate)recommended
- Gloss
- matt (primer)recommended
- Drying · Conditions
- 20–25 °C
- Drying · Before sanding
- 4–12 hrecommended
- Drying · Dust-free
- 10 minrecommended
- Drying · Touch dry (min)
- 30 minrecommended
- Drying · Hard dry (h)
- 12 hrecommended
- Pot life
- 2–4 hrecommended
Colours
- LBR45 · mahogany
Application
HVLP
- Nozzle
- 1.8–2 mmrecommended
- Pressure · air
- 2–2.5 bar (gun inlet, trigger pulled)recommended
- Spray viscosity
- 22–30 s DIN4 / VZ-4recommended
- Consumption
- 120 g/m²official
- Wet film
- 90–110 µmrecommended
- Coats
- 1–2recommended
- Flash-off
- 10–15 minrecommended
- Recoat
- ≥4 h at 20–25 °C, after sandingrecommended
- Sanding between coats
- K120 pads/sponges on relief, P220–P320 on flat areasrecommended
Distance 15–20 cm, 50 % overlap. Hit edges and recesses of the relief first, then the flats.
Conventional spray
- Nozzle
- 1.8–2.2 mmrecommended
- Pressure · air
- 3–4 barrecommended
- Spray viscosity
- 22–30 s DIN4recommended
- Consumption
- 120 g/m²official
Universal method per the methods page (up to ~40 % transfer efficiency).
Airmix (air-assisted airless)
- Nozzle
- 0.28–0.33 mm (0.011–0.013 in)recommended
- Pressure · fluid
- 20 barofficial
- Pressure · air
- 1–2 barofficial
- Spray viscosity
- 30–45 s DIN4recommended
- Consumption
- 120 g/m²official
Airless
- Nozzle
- 0.33–0.38 mm (0.013–0.015 in)recommended
- Pressure · fluid
- 120–180 barrecommended
- Consumption
- 120 g/m²official
Only for long moulding runs and flat PU-foam panels; floods fine carving.
Brush
- Why ru
- На официальной странице единственный метод — распыление; подкраска кистью — обычная практика для тиксотропных грунтов, но Technocolor её не предусматривает.
Officially spray-only. Brush only for local touch-up of chips on relief (10 % thinner).
Process and compatibility
- Substrate preparation
- Degrease thoroughly (remove mould release from the casting), scuff lightly with an abrasive pad if needed, de-dust.recommended
- Sanding
- K120 pads after ≥4 hrecommended
- Temperature and humidity
- 18–25 °C, RH ≤ 70 %recommended
- Don'ts
- don't prime an uncleaned casting — mould release causes peeling
- don't add more than 20 % hardener ‘just in case’
- don't flood recesses — trapped solvent can blister on foam
- don't sand sharp relief edges with a hard block — you'll cut through to the foam
Storage
Safety: 2K PU system: the hardener contains isocyanates. Spray in a booth with an organic-vapour respirator (A2P3), gloves and goggles. Flammable. (General 2K PU practice; no SDS found for LBR45.)
Sources
Value tags: “official”, “dealer”, “catalog”, “schedule” are Technocolor data; “workshop” is from our own datasheets; “recommended” comes from industry best practices (hover to see the reasoning).
- official page: properties, spray 120 g/m², hardener LNB71/LNB16405 20 % wt / 30 % vol, thinner LZC1051 10–30 % wt / 20–40 % vol
- t-colormarket.ru search — no LBR45 product page
- LNB16405 dealer page: PU hardener, manufacturer MILESI
- LNB71 (Хольцком/timb.ru): solids 50 ± 1 %, hardener for adhesion PU primers for PU foam
- LNB16405 (timb.ru): Milesi PU hardener, 5 l
- Milesi LZC series TDS: LZC1051 density 0.864, medium evaporation, PU finishes at 18–22 °C (local copy src/pdf/tds/milesi_LZC.pdf)
- official PU-foam finishing schedule (analogous primer PPS20040; 4 h dry, K120 pads)
- special-effects catalog p.15: degrease PU foam, adhesion primers, downstream RAL/CQS/ATL500
- application methods page
- dealer search: LBR40 sibling listed with Производитель: MILESI
Not covered by the sources
- solids % of part A (not on official page; not found at t-colormarket.ru — LBR45 has no dealer product page)
- viscosity of part A
- official density
- shelf life, storage temperature, packaging sizes
- Milesi technical data sheet for LBR45 (searched edid-milesi.bg, milesi.com, Italian/English dealers — not found)
- SDS / safety data
- official weight/volume pair for thinner (10–30 % wt vs 20–40 % vol) is internally inconsistent with LZC1051 density 0.864
- no official finishing schedule names LBR45
- pot life (only a derived 2–4 h from sibling LBR102 Milesi TDS)
- drying times dust-free/touch/hard (only derived from sibling LBR102 Milesi TDS + analogous PU-foam schedule)
- LNB71 density / pot life (no TDS found)
- t-colormarket.ru LBR40 sibling product page returns 404 — no dealer technical block available for the line