Partially Hydrogenated Gum Rosin
Partially hydrogenated Chinese Rosin has a lighter color and is more stable.
Hydrogenated rosin has more resistance to oxidation and has lighter color.
Like unmodified pine rosin, hydrogenated rosin have a wide span of compatibility with almost all polymers. They are well known for their peel and tack contribution to the adhesive. Specific benefits of hydrogenated rosin include:
Significantly improved stability.
Less to no skin sensitization (depends on the degree of hydrogenation).
Less UV absorption, thus making them suitable for UV curable polymer based adhesives.
Imparts only a slight decrease of cohesive strength, especially in block co-polymer systems.
Can be used in amorphous polyolefin based adhesives.