Name: Hydrogenated Rosin Methyl Ester HRME-80
Brand: Coatingsink
SKU: hydrogenated-rosin-methyl-ester
Availability: InStock

Question 1

Is HRME-80 approved for food-contact packaging adhesives?

Accepted Answer

HRME-80 meets FDA 21 CFR 175.105 requirements for indirect food-contact adhesives. Its very low odour and residual solvent content (< 100 ppm) make it suitable for primary packaging applications including flexible pouches and paper laminates where odour migration is a critical quality parameter.

Question 2

How does HRME-80 compare with pentaerythritol rosin ester in EVA hot-melt adhesives?

Accepted Answer

HRME-80's lower softening point (65°C vs 95–105°C for PE rosin ester) gives superior low-temperature flexibility and allows a lower application temperature, reducing energy consumption and thermal degradation of the EVA. Colour is also lighter (Gardner < 2 vs 3–5), which is advantageous for clear-film laminations where optical clarity is required.

Question 3

What loading level is recommended in SIS-based pressure-sensitive formulations?

Accepted Answer

Start at 50–80 phr relative to the SIS block copolymer. HRME-80's relatively low softening point maximises ambient-temperature tack; blending with a higher-SP tackifier (e.g., 115°C hydrogenated C5 resin) at a 70:30 ratio extends the upper service temperature ceiling while maintaining room-temperature adhesion.

Acid Value	< 5 mg KOH/g
Color (Gardner)	< 2
Residual Solvent	< 100 ppm
Saponification Value	155–175 mg KOH/g
Softening Point (R&B)	62–68°C

Hydrogenated Rosin Methyl Ester HRME-80

Specifications

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