公开(公告)号：US12005602B2

公开(公告)日：2024-06-11

申请号：US16964342

申请日：2019-02-12

Applicant: BASF SE

Inventor： Ferdinand Leifeld ,  Sabine Both ,  Achim Fessenbecker

IPC: B27K5/00 ,  B27N1/00 ,  B27N3/04 ,  B27N3/12 ,  B27N3/18

CPC classification number: B27K5/007 ,  B27K5/0085 ,  B27N1/00 ,  B27N3/04 ,  B27N3/12 ,  B27N3/18 ,  B27K2200/10 ,  B27K2200/15

Abstract: The disclosure relates to a method for the production of wood fiberboards such as MDF boards.

公开(公告)号：US20190276568A1

公开(公告)日：2019-09-12

申请号：US16344381

申请日：2017-10-24

Applicant: BASF SE

Inventor： Ferdinand Leifeld ,  Achim FESSENBECKER ,  Steffen HENKES ,  Massimiliano BORDIGNON ,  Vandana KURKAL-SIEBERT ,  Laszlo SZARVAS ,  Qing Feng TONG

IPC: C08F120/06 ,  C08F2/20 ,  C08F8/44 ,  C08F2/38 ,  C08K3/22 ,  C08K3/26 ,  C08K3/32

Abstract: An acrylic acid polymer having a weight average molecular weight Mw in the range from 3500 to 2000 g/mol and a polydispersity index Mw/Mn≤2.5, wherein 30% to 60% of the acid groups of the acrylic acid polymers have been neutralized with calcium ions, 30% to 70% of the acrylic acid polymers have been neutralized with sodium ions and 0% to 10% of the acid groups of the acrylic acid polymers have not been neutralized.

公开(公告)号：US10968295B2

公开(公告)日：2021-04-06

申请号：US16344381

申请日：2017-10-24

Applicant: BASF SE

Inventor： Ferdinand Leifeld ,  Achim Fessenbecker ,  Steffen Henkes ,  Massimiliano Bordignon ,  Vandana Kurkal-Siebert ,  Laszlo Szarvas ,  Qing Feng Tong

IPC: C08F120/06 ,  C09C3/10 ,  C08F2/20 ,  C08F2/38 ,  C08F8/44 ,  C08K3/22 ,  C08K3/26 ,  C08K3/32 ,  C08F2/10 ,  B01F17/00 ,  C09C3/04

Abstract: An acrylic acid polymer having a weight average molecular weight Mw in the range from 3500 to 2000 g/mol and a polydispersity index Mw/Mn≤2.5, wherein 30% to 60% of the acid groups of the acrylic acid polymers have been neutralized with calcium ions, 30% to 70% of the acrylic acid polymers have been neutralized with sodium ions and 0% to 10% of the acid groups of the acrylic acid polymers have not been neutralized.

公开(公告)号：US20210046668A1

公开(公告)日：2021-02-18

申请号：US16964342

申请日：2019-02-12

Applicant: BASF SE

Inventor： Ferdinand Leifeld ,  Sabine Both ,  Achim Fessenbecker

IPC: B27K5/00 ,  B27N1/00 ,  B27N3/04 ,  B27N3/12 ,  B27N3/18

Abstract: The disclosure relates to a method for the production of wood fiberboards such as MDF boards.

公开(公告)号：US11624153B2

公开(公告)日：2023-04-11

申请号：US16621916

申请日：2018-06-12

Applicant: BASF SE

Inventor： John Andrew Randolph ,  Laurence J. Rys ,  Ferdinand Leifeld ,  Achim Fessenbecker

IPC: D21D1/20 ,  D21C3/22 ,  D21C9/00 ,  D21B1/16

Abstract: A method of increasing the throughput and/or decreasing the energy usage of a pulping process includes the steps of providing a plurality of lignocellulosic chips, providing a refining composition, applying the refining composition to the plurality of lignocellulosic chips, and mechanically refining the plurality of lignocellulosic chips to form pulp. The refining composition includes water and a lubricating additive including the reaction product of a sugar and an alcohol. The step of applying the refining composition to the lignocellulosic chips is conducted less than 5 minutes prior to, or concurrently with, the step of mechanically refining the wood chips to form pulp.

公开(公告)号：US20200299426A1

公开(公告)日：2020-09-24

申请号：US16074100

申请日：2017-02-02

Applicant: BASF SE

Inventor： Johannes Barth ,  Gledison Fonseca ,  Dieter Faul ,  Martin Ernst ,  Juergen Detering ,  Ferdinand Leifeld ,  Gazi Tuerkoglu

IPC: C08F120/06 ,  C11D3/37 ,  C11D3/00

Abstract: A process for producing aqueous solutions of acrylic acid polymers by polymerization of acrylic acid in feed operation with a free-radical starter in the presence of hypophosphite in water as solvent, which comprises (i) initially charging water and optionally acrylic acid in acidic, unneutralized form, optionally one or more ethylenicaliy unsaturated comonomers, optionally aqueous hypophosphite solution and optionally initiator, (ii) adding acrylic acid in acidic, unneutralized form, optionally one or more ethylenicaliy unsaturated comonomers, aqueous free-radical starter solution and aqueous hypophosphite solution, (iii) adding a base to the aqueous solution after termination of the acrylic acid feed, wherein the comonomer content does not exceed 30 wt % based on the total monomer content, wherein the acrylic acid, the aqueous free-radical starter solution and the aqueous hypophosphite solution are added such that the molar ratio x of acrylic acid to phosphorus-bound hydrogen [AA]/[P—H] over a time period in which at least 75% of the acrylic acid is converted has a value x which is constant to within ±0.5 and is in the range from 0.8 to 2.

公开(公告)号：US10337144B2

公开(公告)日：2019-07-02

申请号：US15552522

申请日：2016-02-18

Applicant: BASF SE

Inventor： Frank Rittig ,  Stefan Koch ,  Alois Kindler ,  Michael Koch ,  Ferdinand Leifeld ,  Vaidotas Navickas ,  Markus Gruen

IPC: C12P19/02 ,  C08H8/00 ,  C12N1/22 ,  D21C1/04 ,  C08B1/00 ,  C08B15/02 ,  C12P19/14

Abstract: Described is a method for processing cellulose-containing biomass with sulfuric acid and certain additives, especially for the pretreatment of cellulose-containing biomass prior to saccharification.

公开(公告)号：US10316106B2

公开(公告)日：2019-06-11

申请号：US15552521

申请日：2016-02-18

Applicant: BASF SE

Inventor： Frank Rittig ,  Stefan Koch ,  Alois Kindler ,  Michael Koch ,  Ferdinand Leifeld ,  Vaidotas Navickas ,  Markus Gruen

IPC: C12P19/14 ,  C12P7/10 ,  C08B15/02 ,  C12N1/10 ,  C08B1/00 ,  C08H8/00 ,  C12P19/02 ,  C13K1/02

Abstract: Described is a method for processing cellulose-containing biomass with sulfuric acid and certain additives, especially for the pretreatment of cellulose-containing biomass prior to saccharification.