发明名称 |
Surface treated modified cellulose from chemical kraft fiber and methods of making and using same |
摘要 |
A modified kraft pulp fiber with unique properties is provided. The modified fiber can be a modified bleached kraft fiber that is almost indistinguishable from its conventional counterpart, except that it has a low degree of polymerization (DP). Methods for making the modified fiber and products made from it are also provided. The method can be a one step acidic, iron catalyzed peroxide treatment process that can be incorporated into a single stage of a multi-stage bleaching process. The products can be chemical cellulose feedstocks, microcrystalline cellulose feedstocks, fluff pulps and products made from them. |
申请公布号 |
US9512563(B2) |
申请公布日期 |
2016.12.06 |
申请号 |
US201313840857 |
申请日期 |
2013.03.15 |
申请人 |
GP Cellulose GmbH |
发明人 |
Nonni Arthur James;Courchene Charles Edward;Tippey Darold |
分类号 |
D21C9/16;D21C3/02;D21C9/00 |
主分类号 |
D21C9/16 |
代理机构 |
|
代理人 |
Sabnis Ram W. |
主权项 |
1. A method of making an absorbent core having improved embossability comprising: including in the core, fiber that has been oxidized during at least one stage of a multi-stage bleaching process with a peroxide and a catalyst under acidic condition, wherein the multi-stage bleaching process comprises at least one bleaching stage following the oxidation stage, wherein the ISO brightness of the fiber at the end of the multi-stage bleaching process comprising the at least one oxidation stage is at least about 88, wherein the fiber does not comprise an optical brightening agent, wherein the fiber exhibits a hemicellulose content from about 16% to about 25%, an aldehyde content ranging from about 1 meq/100 g to about 9 meq/100 g, and a carboxyl content of at least about 3 meq/100 g, and wherein the fiber has further been treated with a surfactant. |
地址 |
Zug CH |