公开(公告)号：US12221545B2

公开(公告)日：2025-02-11

申请号：US16631236

申请日：2018-07-02

Applicant: Stora Enso OYJ

Inventor： Ashar Zafar ,  Jesper Ekström ,  Dimitri Areskogh

IPC: C08L97/00 ,  B27N3/00

Abstract: The present invention relates to a liquid lignin composition, particularly useful in the manufacture of resins for products such as insulation, laminates and engineered wood products such as oriented strand boards (OSB). The liquid lignin composition has a low viscosity even at low water content.

公开(公告)号：US20230407156A1

公开(公告)日：2023-12-21

申请号：US18251599

申请日：2021-11-02

Applicant: Stora Enso OYJ

Inventor： Ashar Zafar ,  Sara Fäldt ,  Huynh Tram Anh Pham

IPC: C09J197/00 ,  C09J11/04

CPC classification number: C09J197/005 ,  C09J11/04 ,  C08K3/28

Abstract: The present invention relates to a bonding resin comprising lignin and plasticizer. The invention also relates to a method for producing the bonding resin as well as the use of the bonding resin. The bonding resin is useful for example in the manufacture of laminates, mineral wool insulation and wood products such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF), parquet flooring, curved plywood, veneered particleboards, veneered MDF or particle boards. The bonding resin is also useful for example in composites, molding compounds and foundry applications.

公开(公告)号：US20230242789A1

公开(公告)日：2023-08-03

申请号：US18003715

申请日：2021-07-01

Applicant: Stora Enso OYJ

Inventor： Ashar Zafar ,  Katarina Hägg ,  David Almqvist ,  Dimitri Areskogh

IPC: C09D197/00 ,  C09D7/80 ,  C09D7/20 ,  C09D7/65

CPC classification number: C09D197/005 ,  C09D7/20 ,  C09D7/65 ,  C09D7/80

Abstract: The present invention is directed to a process for preparing coating compositions containing up to 100% bio-based content. The coating compositions are used for coating metal, paper and wood substrates in various applications. The process for preparing the coating composition comprises the steps of providing lignin, wherein the lignin is agglomerated and has a particle size distribution such that at least 80 wt-% of the agglomerates have a diameter within the range of from 0.2 mm to 5.0 mm, dissolving the agglomerated lignin in an organic solvent, and mixing the solution with a crosslinker to obtain a coating composition.

公开(公告)号：US11667792B2

公开(公告)日：2023-06-06

申请号：US16613738

申请日：2018-05-22

Applicant: Stora Enso OYJ

Inventor： Ashar Zafar ,  Jesper Ekström

IPC: C08L97/00 ,  B27N1/02 ,  C08G8/38

CPC classification number: C08L97/005 ,  B27N1/0209 ,  C08G8/38

Abstract: The present invention relates to a process for lignin dissolution in which partial methylolation of lignin is carried out during the step of preparing a solution of lignin in an aqueous medium comprising alkali. The lignin prepared according to the process of the present invention can be used to manufacture lignin-based phenolic resins, which are particularly useful in the manufacture of laminates.

公开(公告)号：US20230026752A1

公开(公告)日：2023-01-26

申请号：US17757261

申请日：2020-12-16

Applicant: Stora Enso OYJ

Inventor： Ashar Zafar ,  Jesper Ekström

IPC: C08L97/00 ,  C08F220/32 ,  B32B21/14 ,  B27N3/00

Abstract: The present invention relates to a process for preparing a bonding resin, wherein lignin is provided in the form of an aqueous solution and mixed with one or more of a crosslinker and optionally one or more additives. The bonding resin is useful for example in the manufacture of laminates, mineral wool insulation and wood products such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF), parquet flooring, curved plywood, veneered particleboards, veneered MDF or particle boards.

公开(公告)号：US20220033561A1

公开(公告)日：2022-02-03

申请号：US17297061

申请日：2019-11-26

Applicant: Stora Enso OYJ

Inventor： Ben Nasli Bakir ,  Ashar Zafar ,  Jesper Ekström

IPC: C08G16/06 ,  B27N3/00 ,  C08G8/38 ,  C08H7/00

Abstract: The present invention relates to a process for lignin dissolution in which partial methylolation of lignin is carried out during the step of preparing a solution of lignin in an aqueous medium comprising alkali and phenol. The lignin prepared according to the process of the present invention can be used to manufacture lignin-based phenolic resins, which are particularly useful in the manufacture of laminates.

公开(公告)号：US11104774B2

公开(公告)日：2021-08-31

申请号：US15741414

申请日：2016-06-29

Applicant: Stora Enso OYJ

Inventor： Dimitri Areskogh ,  Ashar Zafar

IPC: C08J7/12 ,  C08G8/24 ,  C08L97/00 ,  C08G8/38 ,  C09J161/12 ,  B27N3/00 ,  C09J197/00 ,  C08K3/22 ,  C08L61/12

Abstract: The present invention relates to a method for increasing the reactivity of lignin which method comprises the following steps; providing a mixture comprising lignin and an alkali solution wherein the concentration of the alkali solution of the mixture is between 5-50% by weight, storing said mixture for a period of at least 1 day whereby the reactivity of the lignin is increased. The present invention also relates to a resin composition comprising said lignin and use of said resin composition.

公开(公告)号：US20210238367A1

公开(公告)日：2021-08-05

申请号：US17048713

申请日：2019-04-16

Applicant: Stora Enso OYJ

Inventor： Ben Nasli Bakir ,  Ashar Zafar ,  Jesper Ekström

IPC: C08J3/00 ,  B27N3/00 ,  B27N3/12 ,  B27N1/00 ,  C09J161/06 ,  C09J197/00 ,  C08K5/21

Abstract: The present invention relates to a process for preparing a bonding resin, wherein a resin prepared from lignin, phenol and formaldehyde and comprising a formaldehyde scavenger, is mixed with a resin prepared from phenol and formaldehyde and comprising a formaldehyde scavenger to achieve a mixture useful as a bonding resin useful in the manufacture of oriented strand board (OSB).

公开(公告)号：US10711153B2

公开(公告)日：2020-07-14

申请号：US15024930

申请日：2014-09-25

Applicant: Stora Enso OYJ

Inventor： Ashar Zafar ,  Dimitri Areskogh

IPC: C09D163/00 ,  C08H7/00 ,  C09J197/00 ,  C09D171/03 ,  C09D171/02 ,  C08L97/00 ,  C08G59/06 ,  C08G59/22

Abstract: The present invention relates to a composition for coating, in particular a composition comprising lignin and one or more epoxy-group containing compounds, and methods for the manufacturing thereof and uses thereof. The present invention also relates to products obtainable by said methods and uses thereof.