会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明申请
    • Pulp Bleaching Processes
    • 纸浆漂白工艺
    • US20070246176A1
    • 2007-10-25
    • US11628961
    • 2005-06-08
    • Shoichi MiyawakiKazuhiro KurosuTakashi Ochi
    • Shoichi MiyawakiKazuhiro KurosuTakashi Ochi
    • D21C9/10
    • D21C9/1005D21C9/1084D21C9/16
    • The present invention aims to further advance the acid treatment or irradiation technology for pulp to develop a bleaching process using smaller amounts of chlorine chemicals with higher efficiency as compared with conventional bleaching processes. It also aims to provide an excellent high brightness pulp having a low environmental impact and no discoloration as well as a paper containing it. The present invention provides a chlorine-free bleaching process with very high efficiency by irradiating a pulp washed after an acid treatment with UV light and/or visible light at a wavelength of 100-400 nm under alkaline conditions, preferably in a pH range of 10-13. The acid treatment can be performed under conditions of pH 1-6 and a temperature of 80° C. or more. The irradiation treatment can be performed in the presence of at least one compound selected from the group consisting of reducing agents, peroxides, and hydrogen-donating organic compounds. The present invention also provides a high brightness chemical pulp having an ISO brightness of 88% or more and a brightness loss of 1.0% or less in a specific fading test.
    • 本发明旨在进一步推进纸浆的酸处理或照射技术,与常规漂白方法相比,使用较少量的氯化学品与更高效率开发漂白工艺。 它还旨在提供具有低环境影响和不变色的优异的高亮度纸浆以及含有它的纸。 本发明通过在碱性条件下,优选在pH范围为10的范围内,用紫外光和/或波长为100-400nm的紫外线和/或可见光照射经过酸洗处理的纸浆,提供了非常高的效率的无氯漂白方法 -13。 酸处理可以在pH 1-6和温度为80℃以上的条件下进行。 辐射处理可以在至少一种选自还原剂,过氧化物和给氢有机化合物的化合物存在下进行。 本发明还提供了在特定的褪色试验中,ISO亮度为88%以上,亮度损失为1.0%以下的高亮度化学纸浆。