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1.发明授权
公开(公告)号：US4298428A
公开(公告)日：1981-11-03
申请号：US176230
申请日：1980-08-07
CPC分类号： D21C9/1036
摘要： Improved pulp strength and brightness of chemically produced pulp can be obtained by treating the pulp with the addition of 0.05-0.5% based on the weight of the dry fiber of certain amine materials in the hypochlorite bleaching stage.
摘要翻译： 通过在次氯酸盐漂白阶段中加入基于某些胺材料的干纤维重量的0.05-0.5％的纸浆处理纸浆，可以获得提高纸浆强度和化学制浆的亮度。
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公开(公告)号：US4383889A
公开(公告)日：1983-05-17
申请号：US300110
申请日：1981-09-08
CPC分类号： D21C9/1047 , D21B1/16
摘要： The present invention provdes an additive for reducing brightness loss upon pulp refining comprising in combination at least one anionic polymeric compound and at least one inorganic polymer, preferably such combinations wherein any of such anionic polymeric compounds are of low molecular weight. The preferred inorganic polyphosphates of such combination are those having average polymerization numbers of from about 10 to about 45. The weight proportion of inorganic polyphos-hate to anionic polymeric compound in such combination can be within the range of about 1:10::10:1.The present invention also provides pulp refining processes wherein such additive is added at a sufficient amount to the pulp material being refined to reduce brightness loss, such as at dosages of from about 0.0025 to about 0.5 weight percent additive actives to dry pulp, and end product pulps produced by such processes.
摘要翻译： 本发明提供了用于降低纸浆精炼时的亮度损失的添加剂，其包括组合至少一种阴离子聚合化合物和至少一种无机聚合物，优选这样的组合，其中任何这种阴离子聚合物具有低分子量。 这种组合的优选的无机多磷酸盐是具有约10至约45的平均聚合数的那些。这种组合中无机聚磷酸酯与阴离子聚合物的重量比例可以在约1:10:10:10的范围内。 1。 本发明还提供纸浆精制方法，其中将这种添加剂以足够的量添加到被精炼的纸浆材料中以减少亮度损失，例如以约0.0025至约0.5重量％的添加剂活性物质的剂量至干燥纸浆，以及最终产品 通过这种方法生产的纸浆。
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公开(公告)号：US4657946A
公开(公告)日：1987-04-14
申请号：US755503
申请日：1985-07-16
CPC分类号： D21H17/15 , D21H17/455
摘要： Cationically charged water soluble vinyl addition polymers and condensation polymers provide improved emulsification of alkenyl succinic anhydride sizing agents. Sized paper products prepared from alkenyl succinic anhydride emulsions made with the polymers have superior ink holdout.
摘要翻译： 阳离子带电的水溶性乙烯基加成聚合物和缩聚物提供烯基琥珀酸酐施胶剂的改进乳化。 由聚合物制成的烯基琥珀酸酐乳液制备的大量纸制品具有优异的油墨保持性。
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4.发明授权Phenolic compounds as viscosity preservatives during hypochlorite pulp bleaching 失效酚类化合物作为粘土防腐剂在次氯酸盐纸浆漂白过程中
公开(公告)号：US4295928A
公开(公告)日：1981-10-20
申请号：US176229
申请日：1980-08-07
申请人： Michael D. Breslin
发明人： Michael D. Breslin
CPC分类号： D21C9/1036
摘要： Improved pulp strength and brightness of chemically produced pulp can be obtained by treating the pulp with the addition of 0.05-0.5% based on the weight of the dry fiber of certain aromatic materials in the hypochlorite bleaching stage.
摘要翻译： 通过在次氯酸盐漂白阶段中加入基于某些芳族物质的干纤维重量的0.05-0.5％的纸浆处理可以获得提高纸浆强度和化学制浆的亮度。
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