申请人:——
公开号:US20040138438A1
公开(公告)日:2004-07-15
The invention relates to a cationised polysaccharide product comprising a polysaccharide having at least one first substituent having an aromatic group and at least one second substituent having no aromatic group. The invention further relates to a cationised polysaccharide product comprising one or more polysaccharides having at least one first substituent having an aromatic group and one or more polysaccharides having at least one second substituent having no aromatic group. The present invention also relates to a method for the preparation of a cationised polysaccharide product comprising reacting one or more polysaccharides with at least one aromatic agent and at least one non-aromatic agent. The invention further relates to a method for the preparation of a cationised polysaccharide product comprising reacting a first polysaccharide with at least one aromatic agent, reacting a second polysaccharide with at least one second non-aromatic agent, and then mixing the polysaccharides obtained.
The present invention further relates to a process for production of paper from an aqueous suspension containing cellulosic fibres, and optionally fillers, which comprises adding to the suspension a cationised polysaccharide product comprising a polysaccharide having (i) at least one first substituent having an aromatic group, and (ii) at least one second substituent having no aromatic group, forming and draining the suspension on a wire. The invention also relates to a process for production of paper from an aqueous suspension containing cellulosic fibres, and optionally fillers, which comprises adding to the suspension a cationised polysaccharide product comprising (i) at least one polysaccharide having at least one first substituent having an aromatic group and (ii) at least one polysaccharide having at least one second substituent having no aromatic group, wherein one or both of the polysaccharides according to (i) and (ii) are cationic and/or amphoteric; forming and draining the suspension on a wire. The invention further relates to a process for production of paper from an aqueous suspension containing cellulosic fibres, and optionally fillers, which comprises separately adding to the suspension (i) at least one polysaccharide having at least one first substituent having an aromatic group; and (ii) at least one polysaccharide having at least one second substituent having no aromatic group, wherein one or both of the polysaccharides according to (i) and (ii) are cationic and/or amphoteric; forming and draining the suspension on a wire.
本发明涉及一种阳离子化多糖产品,该产品包括具有至少一个芳香基团的第一取代基和至少一个无芳香基团的第二取代基的多糖。本发明还涉及一种阳离子化多糖产品,它包括一种或多种多糖,其至少一个第一取代基具有芳香基团,以及一种或多种多糖,其至少一个第二取代基不具有芳香基团。本发明还涉及一种阳离子化多糖产品的制备方法,包括将一种或多种多糖与至少一种芳香剂和至少一种非芳香剂反应。本发明还涉及一种制备阳离子化多糖产品的方法,包括使第一种多糖与至少一种芳香剂反应,使第二种多糖与至少第二种非芳香剂反应,然后将得到的多糖混合。
本发明还涉及一种利用含有纤维素纤维和可选填料的水性悬浮液生产纸张的工艺,该工艺包括向悬浮液中加入阳离子化多糖产品,该阳离子化多糖产品包括具有(i)至少一个具有芳香族基团的第一取代基和(ii)至少一个不具有芳香族基团的第二取代基的多糖,形成悬浮液并将其排在金属丝上。本发明还涉及一种利用含有纤维素纤维和可选填料的水性悬浮液生产纸张的工艺,该工艺包括向悬浮液中加入阳离子化多糖产品,该多糖产品包括(i) 至少一种具有至少一个芳香基团的第一取代基的多糖和(ii) 至少一种具有至少一个无芳香基团的第二取代基的多糖,其中根据(i)和(ii)所述的一种或两种多糖为阳离子和/或两性多糖;在金属丝上形成并排出悬浮液。本发明还涉及一种利用含有纤维素纤维和可选填料的水悬浮液生产纸张的工艺,该工艺包括向悬浮液中分别加入(i)至少一种多糖,其至少一个第一取代基具有芳香族基团;和(ii)至少一种多糖,其至少一个第二取代基不具有芳香族基团,其中根据(i)和(ii)所述的一种或两种多糖为阳离子和/或两性多糖;在金属丝上形成悬浮液并将其排出。