公开(公告)号：US20210087343A1

公开(公告)日：2021-03-25

申请号：US16635432

申请日：2018-07-30

Applicant: RUBRECO INC.

Inventor： Brian H. Harrison ,  Hurdon A. Hooper ,  Mathew Ness

IPC: C08G85/00 ,  C08J11/14 ,  C08J11/20

Abstract: Vents and micro-structures of rubber molds may become clogged with rubber that is difficult to remove. These vents and micro-structures can be cleaned of rubber, even if heat aged, by subjecting the mold to high temperatures in the presence of a solvent to devulcanize any rubber present. If the rubber used with the mold being cleaned includes carbon black, a solvent may be used to dissolve the devulcanized polymer, leaving the carbon black which can be removed by water jets or other cleaning means.

公开(公告)号：US11377524B2

公开(公告)日：2022-07-05

申请号：US16635432

申请日：2018-07-30

Applicant: RUBRECO INC.

Inventor： Brian H. Harrison ,  Hurdon A. Hooper ,  Mathew Ness

IPC: C08G85/00 ,  C08J11/14 ,  C08J11/20

Abstract: Vents and micro-structures of rubber molds may become clogged with rubber that is difficult to remove. These vents and micro-structures can be cleaned of rubber, even if heat aged, by subjecting the mold to high temperatures in the presence of a solvent to devulcanize any rubber present. If the rubber used with the mold being cleaned includes carbon black, a solvent may be used to dissolve the devulcanized polymer, leaving the carbon black which can be removed by water jets or other cleaning means.

公开(公告)号：US10087301B2

公开(公告)日：2018-10-02

申请号：US15205637

申请日：2016-07-08

Applicant: RUBRECO INC.

Inventor： Brian Harrison ,  Hurdon A. Hooper ,  Matthew Ness

IPC: C08J11/02

Abstract: A method for the controlled removal of water from devulcanized rubber, comprising steps of contacting the devulcanized rubber with a solvent, dissolving the water out of the devulcanized rubber and into solution without removing other components in the rubber such as polymer, separating the devulcanized rubber from the solvent, and drying the devulcanized rubber. By controlling the amount of water that is in the solvent-solution, and/or the amount of time the devulcanized rubber is in contact with the solvent solution the amount of water that is removed can be controlled. By controlling the amount of water that is removed the rheology/viscosity (e.g. G′ and G″) of the devulcanized rubber can be controlled.