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US 2019/0194102 A1Published application
Method for purifying dihydroxynaphthalene
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsSeiichiro TACHIBANA, Daisuke KORI, Tsutomu OGIHARA, Satoru KITANO, Yukio ABE, Fumihiro HATAKEYAMA, Taiki KOBAYASHI
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Abstract
The invention provides a method for purifying dihydroxynaphthalene, which is capable of suppressing soft particle generation and obtaining dihydroxynaphthalene serving as a raw material of a resin and composition excellent in filterability. The method for purifying dihydroxynaphthalene includes the step of removing a sulfur content in the dihydroxynaphthalene with an adsorbent, and neutral alumina is used as the adsorbent.
Claims18
A method for purifying dihydroxynaphthalene, comprising a step of
- removing a sulfur content in the dihydroxynaphthalene with an adsorbent, wherein
- neutral alumina is used as the adsorbent.
Dependencies are inferred from the claim text.