Rosinhaltigen

Rosinhaltigen is a German term used to describe materials that contain rosin or rosin-derived resins as a significant component. It is a descriptive category rather than a single substance, applied in technical contexts to indicate rosin content in a product such as resins, adhesives, coatings, sizing agents, or inks.

Rosin itself is a natural resin obtained from pine tree oleoresin. The primary constituents are resin acids, including abietic and dehydroabietic acids, along with other resinous components. In “rosinhaltigen” formulations, rosin may be used in its natural form or in derivatives produced by chemical modification, such as hydrogenation or esterification. The rosin fraction influences properties like tack, hardness, viscosity, and acidity, which in turn affect how the material behaves in its end use.

Applications for rosinhaltigen materials are diverse. They are common in adhesives and sealants as tackifiers that improve stickiness and work performance in hot-melt and pressure-sensitive adhesives. In coatings and printing inks, rosin-containing components help adjust rheology, water resistance, and film formation. Rosin sizing agents are used in paper production to reduce water absorption and improve print quality. Rosin derivatives also appear in rubber compounding and various specialty resins, where they contribute to resilience and gloss.

Processing and modification practices include hydrogenation to produce hydrogenated rosin with different stability and color, and esterification with polyols to create rosin esters that enhance heat resistance and compatibility with polymers. Safety considerations note that rosin and some derivatives can cause allergic skin reactions in sensitive individuals, and appropriate handling and ventilation are advised.

See also: Rosin, Rosin acids, Rosin ester, Rosin sizing.