PTS72
PTS72 clear PU adhesion primer (for melamine paper)
Two-pack clear polyurethane adhesion primer. Bites well onto melamine paper and other difficult substrates, wets out the pores, resists cratering and sands well. Cured with the flexible aromatic hardener PC72 at 2:1 (part A : PC72, i.e. 50 % on part A by weight and by volume), thinned with S50. Part A solids 39 %. Its job is to give you a key on the slick substrate so a normal PU build (primer/enamel/lacquer) can go on top.
- finishing furniture doors and panels faced with melamine paper
- adhesion coat on melamine/laminated chipboard and other slick, hard-to-paint substrates before PU primer or enamel
- refinishing/repainting old melamine doors
Mix calculator
Ask about PTS72
Answers are based on the PTS72 data and the products it mixes with.
Mixing matrix
- PC72Hardener% by weight: 50 %official% by volume: 50 %official
Always - the only hardener listed (site, catalog and dealer all agree).
2:1 ratio (A:PC72), fixed - don't cut it back. PC72 is a flexible aromatic hardener, 38 ± 1 % solids (dealer), ≈37 % per the catalog; good adhesion.
- S50Thinner% by weight: 20–25 (typ. 22) %official% by volume: 25–30 %official
Standard: the universal medium-evaporation thinner.
Default 22 % is a derived mid-range pick. Go to 25 % for a 1.3 mm tip and thin coats on verticals.
- S80Thinner% by weight: 20–25 %recommended
Only above ~25 °C or if S50 gives a dry, sandy overspray.
Not from Technocolor's documents - a recommendation.
| Role | Material | % by weight | % by volume | When |
|---|---|---|---|---|
| Hardener | PC72 | 50 %official | 50 %official | Always - the only hardener listed (site, catalog and dealer all agree).2:1 ratio (A:PC72), fixed - don't cut it back. PC72 is a flexible aromatic hardener, 38 ± 1 % solids (dealer), ≈37 % per the catalog; good adhesion. |
| Thinner | S50 | 20–25 (typ. 22) %official | 25–30 %official | Standard: the universal medium-evaporation thinner.Default 22 % is a derived mid-range pick. Go to 25 % for a 1.3 mm tip and thin coats on verticals. |
| Thinner | S80 | 20–25 %recommended | — | Only above ~25 °C or if S50 gives a dry, sandy overspray.Not from Technocolor's documents - a recommendation. |
Percentages are per 100 parts of component A.
Characteristics
- Solids
- 39 %dealer
- Viscosity
- 35 ± 3 sdealer
- Density
- 1–1.1 g/cm³recommended
- Gloss
- не нормируетсяrecommended
- Pot life
- 4 hdealer
- Drying · Touch-dry
- 30 mindealer
- Drying · Dust-free
- 15–20 minrecommended
- Drying · Sand or stack
- 6–16 hrecommended
- Drying · Full cure
- 6 hdealer
- Drying · Conditions
- 20 °C
- Hardness
- эластичный, умеренная твёрдость (качественно)recommended
- Lightfastness
- низкая - желтеет; под светлую прозрачную отделку не рекомендуетсяrecommended
- Elasticity
- эластичный (отвердитель PC72)dealer
- Chemical resistance
- не нормируется (определяется финишем)recommended
- Thixotropy
- norecommended
Colours
- PTS72 · clear
Application
HVLP
- Nozzle
- 1.3–1.5 (typ. 1.4) mmrecommended
- Pressure · air
- 2–2.2 barrecommended
- Spray viscosity
- 16–20 s DIN4recommended
- Consumption
- 150 g/m²official
- Wet film
- 140–150 µmrecommended
- Coats
- 1–2 coatsrecommended
- Flash-off
- 10–30 min at 20 °Crecommended
- Recoat
- after 6 h + scuffrecommended
- Sanding between coats
- P320–P400 after 6 hrecommended
- Gun distance
- 15–20 cmrecommended
The maker only says 'spray, 150 g/m²' (orange icon in the catalog - most likely conventional/air spray). Stir part A thoroughly before mixing (dealer). Strain the mix (125-190 µm).
Conventional spray
- Nozzle
- 1.4–1.6 (typ. 1.5) mmrecommended
- Pressure · air
- 2.5–3.5 barrecommended
- Spray viscosity
- 16–20 s DIN4recommended
- Consumption
- 150 g/m²official
Transfer efficiency up to 40 % (methods page).
Airmix (air-assisted airless)
- Nozzle
- 0.23–0.28 mmrecommended
- Pressure · fluid
- 40–70 barrecommended
- Pressure · air
- 1–2 barofficial
Technocolor doesn't list airmix for PTS72 - a recommendation. 4 h pot life: flush pump and hose with S50 before it runs out.
Airless
- Nozzle
- 0.28–0.33 mmrecommended
- Pressure · fluid
- 80–120 barrecommended
Only for production runs of flat melamine panels; easy to overshoot 150 g/m².
Process and compatibility
- Substrate preparation
- обезжирить → P180–P240 / скотч-брайт → обеспылитьrecommended
- Goes over
- melamine paper / laminated chipboard (ЛДСП) / HPL / MDF
- Sanding
- до: P180–P240; после: P320–P400recommended
- Temperature and humidity
- 18–25 °C, RH 50–70 %recommended
- Don'ts
- Don't spray over glossy, un-degreased melamine - the 'adhesion' won't happen
- Don't cut PC72 below 50 % - the ratio is fixed
- Don't use as a topcoat - aromatic PC72 is the most yellowing hardener in the range (catalog)
- Don't lay 150 g/m² in one pass on verticals - it'll run
- Don't sand through to the melamine on edges
- Don't seal leftover mix airtight - isocyanate + moisture makes CO₂
Storage
- Packaging
- 1 / 5 / 25 лdealer
- Shelf life
- ≈12 месяцев (типично, не подтверждено)recommended
- Storage temperature
- +5…+25 °Crecommended
Safety: Flammable (solvent base, S50 thinner). PC72 hardener contains isocyanates - a respiratory sensitiser: spray only in an extracted booth with an A2P2 respirator (or air-fed mask), nitrile gloves and goggles.
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).
- официальная страница: хорошая адгезия к различным подложкам, распыление 150 г/м², PC72 50 % вес/объём, S50 20-25 % вес / 25-30 % объём
- дилер: описание (меламиновая бумага, фасады/панели), рецепт как на сайте, сухой 39 ± 1 %, вязкость 35 ± 3 с ВЗ-4, жизнестойкость 4 ч, на ощупь 30 мин, полное 6 ч, фасовка 1/5/25 л
- дилер, PC72: эластичный, хорошая адгезия, 2-й компонент ПУ/нитроуретановых ЛКМ, сухой 38 ± 1 %
- S50: прозрачный, бесцветный, средняя скорость высыхания
- методы нанесения: пневматика (перенос до 40 %), airless (до 200 бар, грунты на панелях), airmix (воздух 1-2 бар)
- глоссарий: изолянт/подготовка для трудных основ (меламиновая бумага, слоистые пластики)
Not covered by the sources
- Технический паспорт (ТДС) / паспорт безопасности PTS72 не найден (веб-поиск в этой сессии исчерпан; на сайте и у дилера ТДС нет)
- Время до отлипа пыли, до шлифовки и межслойная выдержка не опубликованы - даны производные оценки
- Плотность, твёрдость, блеск, хим.стойкость не опубликованы
- Подготовка меламина и совместимые финиши производителем не описаны
- Срок и условия хранения не опубликованы
- Параметры распыления (сопло/давление/рабочая вязкость) производителем не даны - все производные
- Ни одна официальная схема отделки (information/technology) не использует PTS72
- Значение пиктограмм каталога (оранжевый пистолет, «сетка») не расшифровано
- Родственный изолянт PTS71 (не PTS72) фигурирует в официальной схеме «Глянцевая отделка фасадов из МДФ для ванных комнат (ПЭ/ПУ)» с С72 50 % и S50 20 %, 80-100 г/м²; для самого PTS72 схем нет.