PTS50 A
PTS50 A clear thixotropic high-solids PU primer
Two-pack clear thixotropic PU primer with higher solids. Fast drying (official site). Catalog: excellent sag resistance, good pore filling, easy sanding, flows into and fills micro-pores well.
- vertical surfaces
- chairs and cots in various species
- assembled pieces
- pore filling (fills micro-pores)
Mix calculator
Ask about PTS50 A
Answers are based on the PTS50 A data and the products it mixes with.
Mixing matrix
- PC20Hardener% by weight: 50 %official% by volume: 50 %official
always, fixed 50 %. Official site and dealer: PC20 only.
Both are aromatic hardeners for PU primers (catalog p.19). PC25 sits at the far left of the chart (fast/hard), PC20 just to its right; PC25 is slightly more yellowing-resistant than PC20, but both yellow with age — keep in mind on pale timber under clear coats.
- PC25Hardener% by weight: 50 %catalog
the catalog allows PC25 as an alternative (faster/harder)
Both are aromatic hardeners for PU primers (catalog p.19). PC25 sits at the far left of the chart (fast/hard), PC20 just to its right; PC25 is slightly more yellowing-resistant than PC20, but both yellow with age — keep in mind on pale timber under clear coats.
- S50Thinner% by weight: 30 %official% by volume: 35 %official
official figure (dealer agrees)
The catalog says 20–25 % — see separate entry.
- S50Thinner% by weight: 20–25 %catalog
per the 2025–2026 catalog; less thinner builds more but atomises harder
Conflicts with the site (30 %). On a 1.7–1.8 mm tip start at 25–30 %.
| Role | Material | % by weight | % by volume | When |
|---|---|---|---|---|
| Hardener | PC20 | 50 %official | 50 %official | always, fixed 50 %. Official site and dealer: PC20 only.Both are aromatic hardeners for PU primers (catalog p.19). PC25 sits at the far left of the chart (fast/hard), PC20 just to its right; PC25 is slightly more yellowing-resistant than PC20, but both yellow with age — keep in mind on pale timber under clear coats. |
| Hardener | PC25 | 50 %catalog | — | the catalog allows PC25 as an alternative (faster/harder)Both are aromatic hardeners for PU primers (catalog p.19). PC25 sits at the far left of the chart (fast/hard), PC20 just to its right; PC25 is slightly more yellowing-resistant than PC20, but both yellow with age — keep in mind on pale timber under clear coats. |
| Thinner | S50 | 30 %official | 35 %official | official figure (dealer agrees)The catalog says 20–25 % — see separate entry. |
| Thinner | S50 | 20–25 %catalog | — | per the 2025–2026 catalog; less thinner builds more but atomises harderConflicts with the site (30 %). On a 1.7–1.8 mm tip start at 25–30 %. |
Percentages are per 100 parts of component A.
Characteristics
- Solids
- 51 %catalog
- Viscosity
- thicker than PTS50 (≥70 s VZ-4) — not published srecommended
- Thixotropy
- yesofficial
- Pot life
- 4dealer
- Drying · Touch-dry
- 20dealer
- Drying · Sand or stack · At 20 °C
- 3–4 hrecommended
- Drying · Full cure
- 8dealer
- Drying · Conditions
- 20 °C
Colours
- PTS50 A · clear
Application
HVLP
- Nozzle
- 1.7–1.9 (typ. 1.8) mmrecommended
- Pressure · air
- 1.8–2.2 barrecommended
- Pressure · Cap
- 0.5–0.7 barrecommended
- Spray viscosity
- 22–28 srecommended
- Consumption
- 120–150 g/m²official
- Wet film
- 120–150 µmrecommended
- Coats
- 2 coats, sanding between (K120)recommended
- Flash-off
- 10–20 minrecommended
- Recoat
- after drying and sanding K120 — by PTS50: 2 h at 30–35 °C or ~3–4 h at 20 °Crecommended
- Sanding between coats
- sanding pads)recommended
Gun 15–20 cm from the surface, 50 % overlap, fan fully open. Higher solids (51 %) — don't go below 1.8 mm.
Conventional spray
- Nozzle
- 1.8–2 mmrecommended
- Pressure · air
- 3–4 barrecommended
- Spray viscosity
- 20–25 srecommended
- Consumption
- 120–150 g/m²official
Conventional air spray: transfer efficiency up to 40 % (methods page). For chairs and spindles HVLP or electrostatic is better value.
Airmix (air-assisted airless)
- Nozzle
- 0.23–0.33 mmrecommended
- Pressure · fluid
- 20 barofficial
- Pressure · air
- 1–2 barofficial
- Spray viscosity
- 25–35 srecommended
- Consumption
- 120–150 g/m²official
Not listed by the manufacturer as its own method — a production-line recommendation.
Electrostatic
- Nozzle
- 0.23–0.28 mmrecommended
- Pressure · fluid
- 20 barofficial
- Pressure · air
- 1–2 barofficial
- Consumption
- 120–150 g/m²catalog
Electrostatic is listed for PTS50 A only in the 2025–2026 catalog (turquoise icon, 120–150 g/m²); the official page and the dealer list plain spraying only. Typical for chairs, table legs and cots; the mix's conductivity may need a thinner adjustment — check with Technocolor.
Process and compatibility
- Substrate preparation
- шлифование K120–K180, обеспылить; по крашеной древесине — после полного высыхания красителяrecommended
- Sanding
- K120–K180 (P150–P240 на шкурке) между слоямиrecommended
- Temperature and humidity · Application
- 18–25 °Crecommended
- Don'ts
- don't use it as the main sealer on big flat horizontal panels — thixotropic coatings flow out worse and can leave open pores or orange peel (official characteristics page)
- don't use the mix past its 4 h pot life at 20 °C
- don't sand while the paper still clogs — give it more time
Storage
- Packaging
- 1 л,5 л,25 лdealer
Safety: 2K PU: the hardener contains isocyanates. Spray in a booth, wear a carbon respirator (A2P2/A2P3) or air-fed mask, gloves and goggles. Flammable. Don't seal leftover mixed material. (General PU practice; no SDS found.)
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).
- properties, spray 120–150 g/m², PC20 50/50 %, S50 30 % w / 35 % v
- pot life 4 h, touch 20 min, full 8 h, PC20/S50 table, packaging
- methods
- definitions
Not covered by the sources
- viscosity of part A (dealer lists none)
- shelf life / storage temperature
- density
- exact sand time at 20 °C
- dust-free time
- hardness, chemical resistance, lightfastness
- not used in any official finishing schedule
- no Technocolor TDS PDF found
- thinner ratio conflict: site/dealer 30 % w / 35 % v vs catalog 20–25 %
- electrostatic: catalog only (official page/dealer list spray only)