公开(公告)号：US20180127515A1

公开(公告)日：2018-05-10

申请号：US15577787

申请日：2016-05-30

Applicant: Teknologian tutkimuskeskus VTT Oy

Inventor： Jarmo Ropponen ,  Riku Talja ,  Pia Willberg-Keyriläinen ,  Ali Harlin ,  Sari Asikainen ,  Jari Vartiainen

IPC: C08B1/02 ,  C08B3/06 ,  C08B11/02 ,  C08B3/08 ,  C08B3/10 ,  C08B1/06 ,  C08J5/18 ,  C08J7/04

CPC classification number: C08B1/02 ,  C08B1/06 ,  C08B3/06 ,  C08B3/08 ,  C08B3/10 ,  C08B11/02 ,  C08J5/18 ,  C08J7/042 ,  C08J2301/04 ,  C08J2301/10 ,  C08J2301/12 ,  C08J2401/02 ,  C08L1/10 ,  C08L1/28

Abstract: According to an example aspect of the present invention, there is provided a method of improving the reactivity and processability of cellulose in order to utilize cheap and easily available raw material and obtain excellent performance for biomaterial manufacturing.

公开(公告)号：US20150225901A1

公开(公告)日：2015-08-13

申请号：US14428377

申请日：2013-09-16

Applicant: Teknologian Tutkimuskeskus VTT Oy

Inventor： Sari Asikainen ,  Marjo Määttänen ,  Ali Harlin ,  Kyösti Valta ,  Eino Sivonen

IPC: D21H21/32 ,  D21C11/00 ,  D21C9/00 ,  D21H11/14

Abstract: A method of producing dissolving pulp from a recycled fibrous feedstock. The method comprises providing a fibrous material comprising cellulose, lignin and hemicellulose, said fibre source further having a lignin content of 0.1 to 7% lignin and an ash content of up to 3%; subjecting the fibrous material to an alkaline extraction at a temperature of about 0 to 25° C., to produce fibres having a reduced content of hemicellulose; subjecting the fibres thus obtained to a bleaching treatment carried out with oxidative chemical reagents in order to reduce the lignin content of the fibres; and recovering the fibres thus obtained. By means of the method, dissolving pulp can be produced from recycled paper and cardboard products.

Abstract translation: 从循环纤维原料生产溶解纸浆的方法。 该方法包括提供包含纤维素，木质素和半纤维素的纤维材料，所述纤维源还具有木质素含量为0.1至7％，木质素含量高达3％。 在约0至25℃的温度下对纤维材料进行碱提取，以制备具有降低的半纤维素含量的纤维; 使由此获得的纤维经氧化化学试剂进行漂白处理以降低纤维的木质素含量; 并回收由此获得的纤维。 通过该方法，可以从再生纸和纸板产品生产溶解纸浆。