公开(公告)号：US20180362735A1

公开(公告)日：2018-12-20

申请号：US15736811

申请日：2016-06-16

Applicant: SAPPI Netherlands Services B.V.

Inventor： Wim BALLET ,  Seda CANTEKIN ,  Gustavo DUARTE ,  Saschi MOMIN ,  Jo SIMONS

IPC: C08L1/02 ,  C08J3/09 ,  C08J3/12

Abstract: The present invention provides for a dispersion containing cellulose particles dispersed in a continuous liquid phase comprising a first and a second continuous liquid phase, wherein the first continuous liquid phase consists of a liquid swelling agent or an aqueous solution of said liquid swelling agent, and the second continuous liquid phase comprises, preferably consists of, one or more organic solvents, with the proviso that the one or more organic solvents of the second continuous liquid phase are not capable of dissolving cellulose, have a boiling point higher than the boiling point of the first continuous liquid phase, and are miscible with the constituents of the swelling composition.

公开(公告)号：US20220275577A1

公开(公告)日：2022-09-01

申请号：US17627148

申请日：2020-07-13

Applicant: SAPPI Netherlands Services B.V.

Inventor： Wim BALLET

IPC: D21C9/00 ,  C08L23/12

Abstract: A process for producing surface modified bleached chemical pulp fiber comprising fluidizing the bleached chemical pulp fiber and contacting the fluidized bleached chemical pulp fiber with an aerosol of a surface modifying composition comprising a surface modifying compound

公开(公告)号：US20180361622A1

公开(公告)日：2018-12-20

申请号：US15781345

申请日：2016-12-05

Applicant: SAPPI Netherlands Services B.V.

Inventor： Sandra HENDRIX ,  Wim BALLET ,  Lucile MALETRAS

IPC: B29B7/90 ,  B29B7/16 ,  B29B9/06 ,  B29B9/14 ,  C08K7/02

Abstract: A process for producing a precursor material comprising the steps of, agitating a polymer material and a fibre material in a blending device comprising a blending means operating at a velocity sufficient to bring about an increase of the temperature to at least a temperature beyond the VI CAT softening point or within or beyond the melting temperature range of the polymer material. Thereafter, maintaining the velocity of the blending means and, when the specific motor power needed to maintain the velocity of the blending means increases by a predetermined amount or reaches a predetermined value, reducing the velocity. Repeating the previous step as necessary, until the velocity falls below a first threshold value to form an intermediate material. Finally, comminuting the formed intermediate material in a comminuting device comprising a comminuting means operating at a velocity allowing a decrease in temperature, until the temperature falls below a second threshold value.