PTS20 B
PTS20 B universal clear PU sanding sealer
Two-pack clear polyurethane sanding sealer: fast drying, high solids, sands easily (official site). A separate listing with the same description as PTS20, but cured with PC25 only and taking slightly more thinner by volume (25–35 %). Technocolor doesn't explain the 'B' suffix.
- clear interior wood finishing
- sealer under PU lacquers
Mix calculator
Ask about PTS20 B
Answers are based on the PTS20 B data and the products it mixes with.
Mixing matrix
- PC25Hardener% by weight: 50 %official% by volume: 50 %official
always; the only hardener listed
Mix on scales. PC20 is not officially listed for PTS20 B.
- S50Thinner% by weight: 20–30 %official% by volume: 25–35 %official
always, to working viscosity
| Role | Material | % by weight | % by volume | When |
|---|---|---|---|---|
| Hardener | PC25 | 50 %official | 50 %official | always; the only hardener listedMix on scales. PC20 is not officially listed for PTS20 B. |
| Thinner | S50 | 20–30 %official | 25–35 %official | always, to working viscosity |
Percentages are per 100 parts of component A.
Characteristics
- Solids (qualitative)
- high solidsofficial
- Sandability
- sands easilyofficial
- Drying (qualitative)
- fast dryingofficial
- Hardener class
- aromatic hardener PC25 (~27 % solids)catalog
- Drying · Sand or stack
- 2–3 hrecommended
Colours
- PTS20 B · clear
Application
HVLP
- Nozzle
- 1.6–1.8 (typ. 1.7) mmrecommended
- Pressure · air · Inlet pressure
- 2–2.5 barrecommended
- Pressure · air · Cap
- null–0.7 barrecommended
- Spray viscosity
- 18–24 s DIN4 / VZ-4recommended
- Consumption
- 150 g/m²official
- Wet film
- 130–160 µmrecommended
- Coats
- 2 (typ. 1)recommended
- Flash-off
- 10–15 minrecommended
- Recoat
- after sanding, ~2–3 h at 20 °Crecommended
- Sanding between coats
- P240 → P280 → P320 on flats, K120 pad on profilesschedule
- Technique · Gun distance
- 15–20 cmrecommended
- Technique · Overlap
- 50–75 %recommended
- Technique · Fan
- fully openrecommended
Officially spray, 150 g/m². Base viscosity isn't published — settings carried over from PTS20; check with a cup. If all you have is a 1.4–1.5 mm gun, thin to the top of the range (30 % S50) and lay it in two light cross passes; you'll get a bit less build.
Conventional spray
- Nozzle
- 1.6–1.8 mmrecommended
- Pressure · air
- 3–4 barrecommended
- Spray viscosity
- 18–22 s DIN4 / VZ-4recommended
- Consumption
- 150 g/m²official
Conventional air spray transfers only up to ~40 % (methods page), so mix more than the area suggests.
Airmix (air-assisted airless)
- Nozzle
- 0.23–0.33 mmrecommended
- Pressure · fluid
- 40–80 barrecommended
- Pressure · air
- 1–2 barofficial
- Spray viscosity
- 20–30 s DIN4 / VZ-4recommended
- Consumption
- 150 g/m²official
Airmix is the quality/productivity compromise (methods page).
Airless
- Nozzle
- 0.28–0.33 mmrecommended
- Pressure · fluid
- 100–160 barrecommended
- Consumption
- 150 g/m²official
Per the methods page, airless is ideal for primers on large flat parts (doors, worktops, panels), with up to 90 % transfer.
Process and compatibility
- Substrate preparation
- Sand flats P150 → P180 → P220 and profiles with K60/K80 pads; stain first if needed (the schedule uses CTU + CFS1 + S12 at 80–100 g/m², 5 min at 20–25 °C) before priming.schedule
- Goes under
- PTL20
- Sanding
- P240 → P280 → P320 on flats, K120 on profiles; PTS20 B's time to sanding is unpublished — work to 2–3 h at 20 °C or 1.5 h at 30–35 °C (as PTS20)schedule
- Temperature and humidity · Drying
- 30–35 °Cschedule
- Temperature and humidity · Application
- 18–25 °C, RH 50–70 %recommended
- Don'ts
- don't sit on the mix — pot life isn't published; work to PTS20's 3–4 h
- don't eyeball the hardener — exactly 50 % of base by weight
- don't sand before 2 h at 20 °C — the paper will clog
- don't topcoat without sanding
- don't lay more than ~150 g/m² per coat
Storage
Safety: Solvent-borne 2K PU with an aromatic isocyanate hardener: spray in an extracted booth, wear a carbon respirator (A2/P2 or air-fed), nitrile gloves and eye protection; keep away from ignition sources. (General 2K PU rules; no SDS found.)
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, spray 150 g/m², PC25 50/50 %, S50 20–30 % wt / 25–35 % vol
- PTS20 schedule, used only for process guidance by analogy
- methods page
Not covered by the sources
- solids % part A
- viscosity part A
- pot life
- drying times (touch / sanding / full)
- density
- gloss
- hardness, lightfastness, chemical resistance
- shelf life, storage, packaging
- real ТДС / SDS PDF not found
- no official nozzle/pressure data — all spray settings derived (by analogy with PTS20)
- no dealer listing: t-colormarket.ru search for 'PTS20 B' returns only PTS20 / PTS20700 / PTS20701 (2026-10-05)
- meaning of the 'B' suffix not explained by Technocolor