Name: Solventborne Polyacrylate Adhesive Resin SPA-200
Brand: Coatingsink
SKU: solventborne-polyacrylate-adhesive
Availability: InStock

Question 1

What solvent system is SPA-200 supplied in, and can it be diluted further?

Accepted Answer

SPA-200 is supplied as a 40% solids solution in ethyl acetate (EtOAc). It can be further diluted with EtOAc, MEK, or toluene/EtOAc blends to adjust coating viscosity for your application window—typically targeting 20–35% solids for knife-over-roll or gravure coating.

Question 2

How does SPA-200 achieve clean removability without leaving adhesive residue?

Accepted Answer

The high molecular weight backbone combined with a controlled Tg of −28°C delivers a balanced peel/tack ratio suited for repositionable applications. The low crosslink density allows the adhesive film to cohesively release from BOPP, PET, and silicone-release liners without transfer even after extended dwell times at ambient temperature.

Question 3

Is a crosslinker required, and which types are compatible with SPA-200?

Accepted Answer

A crosslinker is optional but recommended for improved shear resistance and thermal stability. HDI trimer isocyanate at 0.3–0.8 phr or aluminium chelate at 0.1–0.3 phr are both compatible and can be added at the coating stage without significantly reducing removability at these low addition levels.

Solid Content	40 ± 1% (in ethyl acetate)
Residual Monomer	< 0.1%
Viscosity (25°C)	4000–7000 mPa·s
Glass Transition Temperature (Tg)	−28°C
Peel Adhesion (180°, 25 μm film)	3–5 N/25 mm

Solventborne Polyacrylate Adhesive Resin SPA-200

Specifications

FAQ

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