| 发明名称 | Method for stabilizing the whiteness of fluorescent whitening agent(s)(FWA) included in surface-treatment size/coating slip for paper and of surface-treatment layers formed thereof | ||
| 摘要 | The present invention relates to a method for increasing the whiteness stability of fluorescent whitening agent(s) (FWA) included in surface-treatment size/coating slip for paper and of the surface-treatment layers formed thereof. The method is characterized in that sorbitol is charged to the size/coating slip as a carrier. | ||
| 申请公布号 | US9493913(B2) | 申请公布日期 | 2016.11.15 |
| 申请号 | US200712304945 | 申请日期 | 2007.06.14 |
| 申请人 | HOLMEN AB | 发明人 | Letzelter Philippe;Lindgren Johan |
| 分类号 | B32B29/06;D21H21/30;D21H19/62;D21H19/60;D21H19/12;D21H21/16;C11D3/42;D21H19/52;D21H17/36;C07C31/26;D21H17/06;D21H19/46 | 主分类号 | B32B29/06 |
| 代理机构 | Knobbe Martens Olson & Bear LLP | 代理人 | Knobbe Martens Olson & Bear LLP |
| 主权项 | 1. A method comprising the steps of: charging an amount of sorbitol as a carrier to a surface treatment size/coating slip; and surface treating a cardboard/paperboard to form a surface treatment layer by coating with the surface treatment size/coating slip; wherein the amount of sorbitol charged as a carrier is an amount of 1-4 parts by weight, based on 100 parts by weight of pigments included in the coating slip. | ||
| 地址 | Stockholm SE | ||