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PolyurethanePrimer

PPS74

PPS74 White 1K PU in-mould coating (release-side coat) for PU foam

Single-pack white polyurethane in-mould coating for making PU-foam (PPU) parts in moulds. Sprayed onto the mould face - normally over a clear wax- or silicone-based release agent, in some cases without one. When the foam is poured and rises, the coating transfers to the part, bonds well to the PU foam and leaves a ready white primer skin for further finishing. Dries in 5 minutes. No official t-color.ru page - data from t-colormarket.ru.

  • coating moulds for casting PU-foam parts (decor, mouldings, cornices, frames, imitation carving)
  • white primer skin on the foam part straight out of the mould

Mix calculator

g
Thinner5.0 %

When: only if needed to make it spray properly; can be used unthinned

Ratio 100 : 5.0

ComponentWeigh out
PPS74part A476 g
S10Thinner23.8 g
Total500 g

Covers roughly 5.56 m² at 90 g/m².

Pot life of the mix: not applicable (1K).

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Mixing matrix

  • S10Thinner
    % by weight: 0–10 %dealer% by volume: 0–10 %dealer

    only if needed to make it spray properly; can be used unthinned

    S10 is a fast thinner - short open time, which suits the quick flash in the mould.

Percentages are per 100 parts of component A.

Characteristics

Components
1Kdealer
Adhesion
good adhesion to PU foamdealer
Drying · Touch-dry
5 mindealer
Drying · Conditions
20 °C (assumed standard; dealer gives no conditions)
Pot life
not applicable (1K)recommended

Colours

  • PPS74 · white

Application

HVLP

Nozzle
1.4–1.7 mmrecommended
Pressure · air
1.8–2.2 barrecommended
Spray viscosity
as supplied, or + up to 10 % S10recommended
Consumption
80–100 g/m²dealer
Coats
1 even coat (or 2 light passes)recommended
Flash-off
5 mindealer

Spray onto a clean mould over the wax or silicone release. Gun at 15-20 cm, don't let material pool in the recesses. Let it dry about 5 min, then pour the foam.

Conventional spray

Nozzle
1.4–1.6 mmrecommended
Pressure · air
2.5–3.5 barrecommended
Consumption
80–100 g/m²dealer

See the official methods page; conventional spray transfers only up to ~40 %, so expect more overspray mist in the mould.

Airmix (air-assisted airless)

Nozzle
0.23–0.28 mmrecommended
Pressure · fluid
10–20 barrecommended
Pressure · air
1–2 barofficial
Consumption
80–100 g/m²dealer

For production runs of moulds.

Process and compatibility

Substrate preparation
Clean, dry mould; apply a clear wax- or silicone-based release agent, then PPS74. In some cases it can go on without the release agent.dealer
Goes over
[object Object]
Sanding
after demoulding: degrease, then scuff with sanding mats / P120-P180 before overcoatingrecommended
Don'ts
  • don't pour the foam before the coat has dried (~5 min)
  • don't overcoat the part without degreasing off wax/silicone release residue
  • don't add hardener - it is a 1K product
  • don't thin beyond 10 % S10

Storage

Packaging
sold per litre (packaging not stated)dealer

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).

Not covered by the sources
  • no official t-color.ru page
  • no technical data sheet (ТДС) found; dealer 'Документация' tab empty; no other dealer lists PPS74
  • solids %
  • viscosity (cup time)
  • density
  • full cure / demould time
  • compatibility with specific foam systems
  • recommended Technocolor release agent
  • shelf life / storage temperature
  • packaging sizes
  • safety data
  • not in the 2025-2026 catalogue transcripts