PROCESS FOR COLORING POLYMER |
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| 申请号 | EP91906512 | 申请日 | 1991-03-29 | 公开(公告)号 | EP0480049A4 | 公开(公告)日 | 1992-08-05 |
| 申请人 | HOYA CORPORATION; | 发明人 | NIIJIMA, KAZUHISA; KIRIYAMA, HIROSHI; YOKOYAMA, YUUICHI; | ||||
| 摘要 | A process for coloring polymers, which comprises the steps of: dipping a polymer which swells in water or an aqueous solvent mixture or a molding of the polymer in a treating fluid comprising an aqueous solvent mixture containing a colorant having an affinity for the polymer to thereby swell the polymer and at the same time impregnate the colorant into the polymer, and dipping the polymer thus treated in water, an aqueous acid solution or an aqueous solution of an oxidizing agent to fix the colorant to the polymer. When the molding is in contact with a mold, it is possible to carry out swelling and mold release simultaneously. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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