A process for reducing or removing at least 90% of sulfur in a tall oil composition, e.g., to a level of 15 ppm or less is disclosed. The process employs at least a first desulfurization and a second desulfurization treatment in parallel or in series. The first treatment comprises adsorptive desulfurization, wherein the adsorbent material comprises silica adsorbent having an average pore size between 50-200 , BET surface area of at least 300 mm.sup.2/, pore volume of 1.20 to 3.00 cc/g, and a silanol [SiOH] level of 0.5 to 5 unit/nm.sup.2. The second desulfurization treatment is selected from adsorptive treatment, heat treatment, distillation, extraction, oxidation, reduction, hydrogenation, and sulfur scavenging for a reduced sulfur content.

A process for reducing or removing at least 90% of sulfur in a tall oil composition, e.g., to a level of 15 ppm or less is disclosed. The process employs at least a first desulfurization and a second desulfurization treatment in parallel or in series. The first treatment comprises adsorptive desulfurization, wherein the adsorbent material comprises silica adsorbent having an average pore size between 50-200 , BET surface area of at least 300 mm.sup.2/, pore volume of 1.20 to 3.00 cc/g, and a silanol [SiOH] level of 0.5 to 5 unit/nm.sup.2. The second desulfurization treatment is selected from adsorptive treatment, heat treatment, distillation, extraction, oxidation, reduction, hydrogenation, and sulfur scavenging for a reduced sulfur content.

A method, system, apparatus, and/or device for removing resin from material. The method, system, apparatus, and/or device may include a washer configured to receive water from a water source and air from an air source into an interior cavity of the washer via an inlet, the washer including a first filter located within the interior cavity, where the interior cavity is configured to store a material, the interior cavity is configured to direct a flow of the water and the air in a defined pattern to remove a resin from the material, and the washer comprises an opening covered by the first filter. The first filter may be configured to allow the water, the air, and the resin to exit the opening while restricting the material from exiting the opening.

A method, system, apparatus, and/or device for removing resin from material. The method, system, apparatus, and/or device may include a washer configured to receive water from a water source and air from an air source into an interior cavity of the washer via an inlet, the washer including a first filter located within the interior cavity, where the interior cavity is configured to store a material, the interior cavity is configured to direct a flow of the water and the air in a defined pattern to remove a resin from the material, and the washer comprises an opening covered by the first filter. The first filter may be configured to allow the water, the air, and the resin to exit the opening while restricting the material from exiting the opening.

The disclosure relates to a light color or a low color rosin or a rosin ester composition. The rosin ester comprises a reaction product of one or more rosins, one or more polyhydric alcohols, and optionally one or more monocarboxylic acids, and optionally one or more polycarboxylic acids having from 2 to 54 carbon atoms; from 0 ppm to 200 ppm of a co-catalyst, and optionally, a disproportionation catalyst, an esterification catalyst, or combinations thereof. The co-catalyst has a triplet formation quantum yield (.sub.T) of greater than 0.5 and a triplet lifetime (.sub.T) of greater than 0.5 microseconds. Methods to prepare the rosin ester compositions and uses of the compositions are also disclosed.

The disclosure relates to a light color or a low color rosin or a rosin ester composition. The rosin ester comprises a reaction product of one or more rosins, one or more polyhydric alcohols, and optionally one or more monocarboxylic acids, and optionally one or more polycarboxylic acids having from 2 to 54 carbon atoms; from 0 ppm to 200 ppm of a co-catalyst, and optionally, a disproportionation catalyst, an esterification catalyst, or combinations thereof. The co-catalyst has a triplet formation quantum yield (.sub.T) of greater than 0.5 and a triplet lifetime (.sub.T) of greater than 0.5 microseconds. Methods to prepare the rosin ester compositions and uses of the compositions are also disclosed.

Presently described are methods for performing rosin purification. The methods described herein utilize a unique solvent precipitation process that surprisingly and unexpectedly reduces the color of rosin and the sulfur and unsaponifiable contents in the rosin. The described methods are also applicable to rosin derivatives such as rosin esters and amides. Utilizing this purified rosin as raw material, rosin derivatives with much improved characteristics (color, softening point and sulfur content) can be made that would otherwise be difficult to make.

Presently described are methods for performing rosin purification. The methods described herein utilize a unique solvent precipitation process that surprisingly and unexpectedly reduces the color of rosin and the sulfur and unsaponifiable contents in the rosin. The described methods are also applicable to rosin derivatives such as rosin esters and amides. Utilizing this purified rosin as raw material, rosin derivatives with much improved characteristics (color, softening point and sulfur content) can be made that would otherwise be difficult to make.

Disclosed are compositions which include an ethylene polymer derived from at least one polar monomer with one or more ester groups, which polymerize with ethylene, (e.g., a copolymer derived from ethylene and vinyl acetate or a copolymer derived from ethylene and n-butyl acrylate) and a rosin ester. The rosin ester can have a low hydroxyl number (e.g., a hydroxyl number six or five or less), a low acid number (e.g., an acid number of ten or less), a low PAN number (e.g., a PAN number of eight or less), or combinations thereof. The compositions can exhibit improved viscosity stability and/or color stability and/or a decreased amount of char particle formation upon thermal aging.

A light color or a low color rosin or a rosin ester composition is disclosed. Significant color improvement can be obtained for a low color rosin, or a rosin ester by using a co-catalyst. In one embodiment, the co-catalyst has a triplet formation quantum yield (?.sub.T) of greater than 0.5 and a triplet lifetime (?.sub.T) of greater than 0.5 microseconds In another embodiment, the co-catalyst is selected from acridone, anthrone, 9-fluorenone, thioxanthone, xanthone, derivatives and combinations thereof.