发明公开
EP0607448A1 PROCESS FOR PRODUCING THIOUREA DIOXIDE AND BLEACHING OF PAPERMAKING PULP WITH THIOUREA DIOXIDE PRODUCED THEREBY
失效
用于生产THIOHASUSTOFFDIOXID和漂白纸浆与这样产生THIOHASUSTOFFDIOXID。
- 专利标题： PROCESS FOR PRODUCING THIOUREA DIOXIDE AND BLEACHING OF PAPERMAKING PULP WITH THIOUREA DIOXIDE PRODUCED THEREBY
- 专利标题（中）： 用于生产THIOHASUSTOFFDIOXID和漂白纸浆与这样产生THIOHASUSTOFFDIOXID。
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申请号： EP93913494.6申请日： 1993-06-08
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公开(公告)号： EP0607448A1公开(公告)日： 1994-07-27
- 发明人: KANADA, Toshiaki, Mitsubishi Gas Chemical Co Inc. , JINNOUCHI, Seikyu, Mitsubishi Gas Chemical Co Inc. , SHIMPO, Masafumi, Mitsubishi Gas Chemical Co Inc. , KOSHITSUKA, Tetsuo, Mitsubishi Gas Chemical Co Inc , KIMURA, Akiko, Mitsubishi Gas Chemical Co Inc.
- 申请人： MITSUBISHI GAS CHEMICAL COMPANY, INC.
- 申请人地址： 5-2, Marunouchi 2-chome Chiyoda-Ku Tokyo, 100 JP
- 专利权人： MITSUBISHI GAS CHEMICAL COMPANY, INC.
- 当前专利权人： MITSUBISHI GAS CHEMICAL COMPANY, INC.
- 当前专利权人地址： 5-2, Marunouchi 2-chome Chiyoda-Ku Tokyo, 100 JP
- 代理机构： Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
- 优先权： JP150773/92 19920610; JP99498/93 19930426
- 国际公布： WO9325522 19931223
- 主分类号： C07C381/14
- IPC分类号： C07C381/14 ; D21C9/10
摘要：
An economical process for producing thiourea dioxide fluid with reduced chemical loss and energy consumption by mixing a combination of thiourea and a peroxide, a combination of thiourea, a peroxide and a reaction catalyst, or a combination of thiourea, a peroxide, a reaction catalyst and a chelating agent in the optional presence of pulp; and a method of bleaching pulp with the thiourea dioxide fluid thus produced.
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