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US 4,906,733 AGranted
Process for preparing colorless rosin
AssigneeArakawa Kagaku Kogyo Kabushiki Kaisha
InventorsYoshihiro Kodama, Masao Maeda, Kiyoshi Kanagawa
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Abstract
A process for preparing a colorless rosin comprising a step for purifying a disproportionated rosin and hydrogenating the rosin. According to the process, a rosin having a color nearly equal to colorless and is excellent in various properties such as odorless at heating and stability is prepared.
Claims3
A process for preparing a colorless rosin comprising a step for purifying a disproportionated rosin and a step for hydrogenating the rosin.
Dependencies are inferred from the claim text.