公开(公告)号：US20180327311A1

公开(公告)日：2018-11-15

申请号：US15773564

申请日：2016-11-07

Applicant: Teknologian tutkimuskeskus VTT Oy

Inventor： Anna Kalliola ,  Tiina Liitiä ,  Tarja Tamminen ,  Tapio Vehmas

IPC: C04B24/34 ,  C04B28/14 ,  B01F17/00

CPC classification number: C04B24/34 ,  B01F17/0028 ,  C04B24/24 ,  C04B28/14 ,  C04B2103/20 ,  C04B2103/408 ,  C08H6/00 ,  C08L97/005 ,  C04B20/023

Abstract: According to an example aspect of the present invention, there is provided a dispersant comprising alkaline-O2 oxidized lignin. Such dispersant may be used for example in inorganic pigments to reduce interactions between pigment particles and lower the viscosity of pigment mixtures, and thereby positively affect for example to the loading of fillers and pigments in paints and coatings, paper and board, constructions materials, printing inks and plastics. Dispersants may also be used in aiding the inorganic pigment grinding in the pigment mine. Another suitable use is as a plasticizer or as a retardant agent for construction materials, such as gypsum.

公开(公告)号：US12054886B2

公开(公告)日：2024-08-06

申请号：US17427700

申请日：2020-01-31

Applicant: Andritz Oy ,  Metsä Fibre Oy ,  Teknologian tutkimuskeskus VTT Oy

Inventor： Lauri Pehu-Lehtonen ,  Pauliina Sjögård ,  Outi Poukka ,  Katariina Kemppainen ,  Anna Kalliola ,  Tiina Liitiä ,  Tapio Vehmas

IPC: D21C11/00 ,  C08H7/00 ,  D21H11/04

CPC classification number: D21C11/0007 ,  C08H6/00 ,  D21C11/0042 ,  D21C11/0057 ,  D21H11/04

Abstract: According to an example aspect of the present invention, there is provided a method for producing an oxidised lignin based high performance surface active agent in techno-economically feasible manner within kraft pulp mill without interfering the main process.

公开(公告)号：US09676667B2

公开(公告)日：2017-06-13

申请号：US15026618

申请日：2014-10-02

Applicant: Teknologian tutkimuskeskus VTT Oy

Inventor： Anna Kalliola ,  Tiina Liitiä ,  Tarja Tamminen ,  Tapio Vehmas

IPC: C04B16/00 ,  C04B24/24 ,  C04B28/04 ,  C04B20/02 ,  C04B103/30

CPC classification number: C04B24/24 ,  C04B20/023 ,  C04B28/04 ,  C04B2103/30 ,  C04B2103/408 ,  Y02W30/97 ,  C04B14/00 ,  C04B18/24 ,  C04B18/26 ,  C04B24/001

Abstract: The present invention concerns a process for oxidizing lignin at alkaline conditions. This oxidized lignin can be used as a dispersant in various end-products, for example as a renewable plasticizer in cement-containing products, such as concrete, where the ability of the oxidized lignin to endure alkaline conditions is an advantage. Further, the invention concerns a concrete mixture containing aggregate, cement, water and a plasticizer formed of oxidized lignin, and a process for producing such a concrete mixture. The oxidized lignin can be manufactured using a process, where the lignin starting material is reacted with an oxidizing agent in solution in alkaline conditions.

公开(公告)号：US20250084002A1

公开(公告)日：2025-03-13

申请号：US18723481

申请日：2022-12-20

Applicant: Teknologian tutkimuskeskus VTT Oy

Inventor： Tandré Oey ,  Tapio Vehmas

IPC: C04B28/14 ,  C04B14/28 ,  C04B22/08 ,  C04B24/06 ,  C04B28/08

Abstract: According to an example aspect of the present invention, there is provided a composition comprising: a cementitious material; an alpha-hydroxy acid; and at least 4 wt-% of a salt of an alkaline earth metal, calculated from the total dry matter of the cementitious material.

公开(公告)号：US20220120035A1

公开(公告)日：2022-04-21

申请号：US17427700

申请日：2020-01-31

Applicant: Andritz Oy ,  Metsä Fibre Oy ,  Teknologian tutkimuskeskus VTT Oy

Inventor： Lauri Pehu-Lehtonen ,  Pauliina Sjögård ,  Outi Poukka ,  Katariina Kemppainen ,  Anna Kalliola ,  Tiina Liitiä ,  Tapio Vehmas

IPC: D21C11/00 ,  D21H11/04 ,  C08H7/00

Abstract: According to an example aspect of the present invention, there is provided a method for producing an oxidised lignin based high performance surface active agent in techno-economically feasible manner within kraft pulp mill without interfering the main process.

公开(公告)号：US20160244364A1

公开(公告)日：2016-08-25

申请号：US15026618

申请日：2014-10-02

Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY

Inventor： Anna Kalliola ,  Tiina Liitiä ,  Tarja Tamminen ,  Tapio Vehmas

IPC: C04B24/24

CPC classification number: C04B24/24 ,  C04B20/023 ,  C04B28/04 ,  C04B2103/30 ,  C04B2103/408 ,  Y02W30/97 ,  C04B14/00 ,  C04B18/24 ,  C04B18/26 ,  C04B24/001

Abstract: The present invention concerns a process for oxidizing lignin at alkaline conditions. This oxidized lignin can be used as a dispersant in various end-products, for example as a renewable plasticizer in cement-containing products, such as concrete, where the ability of the oxidized lignin to endure alkaline conditions is an advantage. Further, the invention concerns a concrete mixture containing aggregate, cement, water and a plasticizer formed of oxidized lignin, and a process for producing such a concrete mixture. The oxidized lignin can be manufactured using a process, where the lignin starting material is reacted with an oxidizing agent in solution in alkaline conditions.

Abstract translation: 本发明涉及在碱性条件下氧化木质素的方法。 这种氧化木质素可用作各种最终产品中的分散剂，例如作为含水泥产品如混凝土中的可再生增塑剂，其中氧化木质素耐受碱性条件的能力是有利的。 此外，本发明涉及含有聚集体，水泥，水和由氧化木质素形成的增塑剂的混凝土混合物，以及用于生产这种混凝土混合物的方法。 氧化木质素可以使用在碱性条件下使木质素原料与溶液中的氧化剂反应的方法制备。