Name: Hydrogenated C9 Aromatic Tackifier HC9-120
Brand: Coatingsink
SKU: hydrogenated-c9-tackifier
Availability: InStock

Question 1

Which polymer systems is HC9-120 compatible with?

Accepted Answer

HC9-120 is fully compatible with SEBS, SIS, and SBS block copolymers. Its saturated aromatic structure also provides good compatibility with metallocene polyolefin elastomers. It is not recommended for NR or SBR latex systems, where aliphatic C5 resins perform better.

Question 2

Why does full hydrogenation improve UV and heat stability versus standard C9 resins?

Accepted Answer

Aromatic rings in unhydrogenated C9 resins act as chromophores that absorb UV and initiate photo-oxidative degradation, causing yellowing. Saturation of those rings eliminates the UV absorption pathway, dramatically improving colour stability and outdoor durability—critical for clear packaging tapes and automotive protective films.

Question 3

What is the recommended loading level in an SEBS-based pressure-sensitive adhesive?

Accepted Answer

Typical loading is 40–70 phr relative to SEBS. Lower levels (40–50 phr) favour cohesive strength and shear resistance; higher levels (60–70 phr) maximise initial tack and 180° peel force. Optimise with SAFT testing at the target upper service temperature.

Acid Value	< 0.1 mg KOH/g
Color (Gardner)	< 1
Density (25°C)	1.04 g/ml
Softening Point (R&B)	118–122°C
Melt Viscosity (200°C)	~500 mPa·s

Hydrogenated C9 Aromatic Tackifier HC9-120

Specifications

FAQ

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