Hydrogenation is a process used after a resin is polymerized to decrease its color and improve its stability towards heat, oxygen, and ultraviolet light. While the hydrogenation process will increase the cost of a resin it will also improve its properties. In some critical applications, only the highest stability and lowest color of tackifier resin will suffice. Any base tackifier resin can by hydrogenated and LESCO supplies hydrogenated tackifiers based on C5 petroleum resin and C9 petroleum resin.

LESTAC-H brand of hydrogenated aliphatic tackifier resins offers a line of products with a wide range of softening points, levels of hydrogenation, and color. LESTAC-H hydrogenated aliphatic tackifiers are produced in own factory. The low color, excellent thermal stability, and aliphatic chemical properties of LESTAC-H aliphatic tackifiers make them most useful in SIS-based hot melt nonwoven assembly adhesives, polyethylene based packaging adhesives, EVA-based packaging adhesives using EVA of less than 28% vinyl acetate, hot melts based on amorphous polyolefin, hot melt road marking compounds, and petroleum wax compounds.
Table 1: Property Ranges of Hydrogenated C5 Aliphatic Petroleum Resin:

Properties	Range
Ring and ball softening point, °C	90-110
Glass transition temperature, °C	45-90
MMAP cloud point, °C	75-85
DACP cloud point, °C	60-75

Hydrogenated C5 aliphatic Petroleum resin produced by LESCO CHEMICAL LIMITED are:
LESTAC-H Series Hydrogenated C5 Petroleum Resin