PER-145L and PER-145 are pentaerythritol ester of gum rosin. The
resins have high softening point, high viscosity and good heat
stability. The special production process used for this resin
permits the production of the products with high oxidation
resistance, excellent color retention and minimal odor. The resins
are soluble at all useful proportions in most organic hydrocarbon
solvents, esters, and ethers.