PTL20 SM
PTL20 SM Universal PU lacquer, semi-matt (30 gloss)
Two-pack clear polyurethane lacquer, semi-matt (30 gloss). Fast drying, flows out very well, high clarity; good chemical and mechanical resistance. Does not raise the grain. Topcoat over PU sealer for furniture in any wood species.
- Clear topcoat for furniture in any wood species
- Case goods, fronts, raised-panel doors (over PU sealer)
- Clear topcoat over enamel in decorative effects (special-effects catalogue: 'Rain' — PTL20 SM)
Mix calculator
Ask about PTL20 SM
Answers are based on the PTL20 SM data and the products it mixes with.
Mixing matrix
- % by weight: 50 %official% by volume: 50 %official
Primary option per official page
- % by weight: 50 %dealer% by volume: 50 %dealer
Dealer recipe; PC25 is the baseline
PC20 instead of PC25 gives a more flexible film but slower drying.
- PC60Hardener% by weight: 50 %official% by volume: 50 %official
Pale woods / white enamel underneath — when yellowing resistance matters
Dealer: PC60 instead of PC25 improves non-yellowing.
- PC20Hardener% by weight: 50 %catalog
2025–2026 catalogue
- S50Thinner% by weight: 25–30 %official% by volume: 25–30 %official
Standard, 18–25 °C
- S50Thinner% by weight: 20–30 %catalog
Catalogue; dealer description text also says 20–30 %
- % by weight: 25–30 %recommended
Hot weather (above ~25 °C) — better flow-out
Dealer: 'use S70 or S80 in hot weather for better flow'. Slower thinner means more dust pick-up and more sag risk on verticals.
- C25Hardener% by weight: 50 %schedule
Raised-panel doors (PU) schedule, step 13
Schedule prints 'PTL20 : 20%' — obviously a typo (base = 100 %); 'C25' is evidently the PC25 hardener.
- S50Thinner% by weight: 30 %schedule
Raised-panel door schedule
| Role | Material | % by weight | % by volume | When |
|---|---|---|---|---|
| Hardener | PC25 / PC20 / PC60 | 50 %official | 50 %official | Primary option per official page |
| Hardener | PC20 / PC25 | 50 %dealer | 50 %dealer | Dealer recipe; PC25 is the baselinePC20 instead of PC25 gives a more flexible film but slower drying. |
| Hardener | PC60 | 50 %official | 50 %official | Pale woods / white enamel underneath — when yellowing resistance mattersDealer: PC60 instead of PC25 improves non-yellowing. |
| Hardener | PC20 | 50 %catalog | — | 2025–2026 catalogue |
| Thinner | S50 | 25–30 %official | 25–30 %official | Standard, 18–25 °C |
| Thinner | S50 | 20–30 %catalog | — | Catalogue; dealer description text also says 20–30 % |
| Thinner | S70 / S80 | 25–30 %recommended | — | Hot weather (above ~25 °C) — better flow-outDealer: 'use S70 or S80 in hot weather for better flow'. Slower thinner means more dust pick-up and more sag risk on verticals. |
| Hardener | C25 | 50 %schedule | — | Raised-panel doors (PU) schedule, step 13Schedule prints 'PTL20 : 20%' — obviously a typo (base = 100 %); 'C25' is evidently the PC25 hardener. |
| Thinner | S50 | 30 %schedule | — | Raised-panel door schedule |
Percentages are per 100 parts of component A.
Characteristics
- Solids
- 42 ± 1 % part Adealer
- Viscosity
- 60 ± 5 sdealer
- Gloss
- 30 ± 3 gloss unitsdealer
- Pot life
- 4 hdealer
- Drying · Touch-dry
- 25 mindealer
- Drying · Full cure
- 4 hdealer
- Drying · Full dry, alt. (h)
- 8dealer
- Drying · Forced drying
- 1.5 h at 30–35 °Cschedule
- Drying · Sand or stack
- 4–8 hrecommended
- Drying · Conditions
- 20 °C
- Chemical resistance
- хорошая физико-химическая стойкость; устойчив к влаге и химическим веществамdealer
- Hardness
- высокая износостойкость, стойкость к царапинам и сколам (качественно, без цифр)dealer
- Elasticity
- выше с PC20 вместо PC25dealer
- Lightfastness
- стойкость к пожелтению повышается с PC60 вместо PC25dealer
Application
HVLP
- Nozzle
- 1.3–1.5 (typ. 1.4) mmrecommended
- Pressure · air
- 1.8–2.2 barrecommended
- Spray viscosity
- 18–22 srecommended
- Consumption
- 120–150 g/m²official
- Coats
- 1 (on a sealed, sanded surface)dealer
- Wet film
- 110–140 µmrecommended
- Flash-off
- 10–20 minrecommended
- Recoat
- wet-on-tack within 10–20 min (before the 25 min touch-dry), or after ≥ 4 h with a P320–P400 denibrecommended
- Sanding between coats
- P320–P400 (denib only, sealer is sanded P240–P320 per schedule)recommended
Stir the matt grades (DM/UM/M/SM) thoroughly before adding hardener — the matting agent settles. Don't sand or polish the final coat — the sheen goes patchy. 15–20 cm distance, 50 % overlap.
Conventional spray
- Nozzle
- 1.4–1.6 mmrecommended
- Pressure · air
- 3–4 barrecommended
- Consumption
- 120–150 g/m²official
Transfer efficiency only up to 40 % (methods page); more overspray.
Airmix (air-assisted airless)
- Nozzle
- 0.23–0.28 mmrecommended
- Pressure · fluid
- 15–20 barrecommended
- Pressure · air
- 1–2 barofficial
- Consumption
- 120–150 g/m²official
Brush
- Consumption
- 120–150 g/m²dealer
Dealer: 'brushing is also acceptable'. 4 h pot life and fast drying — work small areas.
Process and compatibility
- Substrate preparation
- P150/P180/P220 flat, К60/К80 profiles; stain; PTS20 sealer ×2 sanded P240–P320 / К120schedule
- Sanding
- between sealer coats P240/P280/P320 flat, К120 profileschedule
- Temperature and humidity
- drying 30–35 °C, 1.5 h (forced); data quoted at 20 °Cschedule
- Temperature and RH (derived)
- apply 18–25 °C, RH 50–70 %recommended
- Don'ts
- Don't use a mix older than 4 h
- Don't sand/polish the final matt coat
- Don't exceed 30 % thinner — build drops and the sheen shifts
- Don't spray over damp wood or in high humidity (isocyanate hardener)
Storage
- Packaging
- 1 L, 5 L, 25 Ldealer
Safety: Two-pack isocyanate, solvent-borne: spray booth with extraction, respirator (A2 organic cartridges or air-fed), nitrile gloves, goggles. Highly flammable.
Used in finishing systems
Mixed into
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 page: properties, hardener/thinner %, consumption
- dealer page: tech table (gloss, solids, viscosity, pot life, drying), mix table, hardener/thinner notes, packaging
- finishing schedule: PTL20 + C25 50 % + S50 30 %, 150 g/m², 1.5 h at 30–35 °C
- application methods
- characteristics vocabulary
Not covered by the sources
- shelf life / storage temperature of part A (not published)
- density
- hardness value (pendulum/pencil) — only qualitative
- dust-free time (only touch-dry 25 min published)
- nozzle/pressure — no Technocolor data, all derived
- no Technocolor TDS PDF found (web search budget exhausted; dealer pages carry the tech table)
- full-dry conflict: dealer tech table 4 h vs dealer description 8 h