Industry News

Arizona Chemical Expands Capacity to Produce Dimerized Rosin Resin and Re-Introduces Sylvaros®PR 140

Published on 2003-11-06. Author : SpecialChem


Arizona Chemical, a leader in pine-based adhesive tackifying resins, has expanded its manufacturing capacity at its Port St. Joe, Fla., facility to produce dimerized rosin resin. In addition, the company is re-introducing its Sylvaros® PR 140, a high softening point and high dimer rosin content resin.

Arizona Chemical has produced polymerized and modified rosins at its plants in the southeastern U.S. for over 30 years. The company expanded its capacity to satisfy increasing demand.

Adhesive formulators have long relied on the unique properties and performance of polymerized and modified rosins because these resins improve specific adhesion, reduce adhesive viscosity, and minimize crystallinity. Their highly polar nature gives them affinity for such polar surfaces as paper, polyester and metal, while their low viscosities enhance penetration into porous substrates.

In addition, high softening point polymerized rosins increase heat resistance and hot tack. Common adhesive applications include case and carton sealing, hot pick-up labels, mastics, caulks and sealants.

"These resins offer excellent cost-performance value in a wide range of polymers, including SBR and EVA," explained Marc Jackson, Marketing Manager for Arizona Chemical's adhesive tackifier business. "Their acid functionality serves as a site for crosslinking or curing and enables them to be more readily emulsified for use in anionic water-based adhesives."

Polymerized rosin is a mixture of dimerized and "monomer" rosin acids. Tall oil rosin, derived from pine trees, is processed to contain varying levels of dimer rosin which results in a product line with a range of softening points (75 - 140°C) and acid numbers (140 - 160). Additionally, the monomer and dimerized rosin levels control molecular weight and polydispersity.

Modified tall oil rosin, on the other hand, is not polymerized, but chemically modified to be totally non-crystallizing. This allows formulators to incorporate a non-crystalline resin with the same properties as tall oil rosin into a wide range of adhesives and related products.

Arizona Chemical, headquartered in Jacksonville, Fla., is a global leader in pine chemistry. The company has seven manufacturing plants in the U.S. and six in Europe, and supplies pine chemicals to the adhesives, inks and coatings and oleochemicals markets. Arizona Chemical also has research and development capabilities and a network of sales offices throughout the world. The company employs 1,600 people.

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