公开(公告)号：US12251677B2

公开(公告)日：2025-03-18

申请号：US17295691

申请日：2019-12-03

Applicant: SPECIALTY OPERATIONS FRANCE

Inventor： Rodolphe Sapey-Triomphe ,  Lars Fischer ,  David Vanzin

IPC: B01J2/02 ,  B01J2/20 ,  C07C39/08

Abstract: The present invention relates to new lightly colored prills of hydroquinone. More particularly, the invention provides a new method for preparing said lightly colored prills of hydroquinone. The invention also relates to said prills of hydroquinone obtained by said new method.

公开(公告)号：US20240092720A1

公开(公告)日：2024-03-21

申请号：US18264213

申请日：2021-02-04

Applicant: SPECIALTY OPERATIONS FRANCE

Inventor： Jing Jiang ,  David Vanzin ,  Rodolphe Sapey-Triomphe ,  Shujing Cheng ,  Lars Fischer

IPC: C07C57/04 ,  C07C51/50

CPC classification number: C07C57/04 ,  C07C51/50

Abstract: An anti-fouling composition, and uses thereof in the industrial preparation of ethylenically unsaturated monomers comprising at least one heteroatom, such as acrylic monomers are disclosed.

公开(公告)号：US20250161898A1

公开(公告)日：2025-05-22

申请号：US19030470

申请日：2025-01-17

Applicant: SPECIALTY OPERATIONS FRANCE

Inventor： Rodolphe Sapey-Triomphe ,  Lars Fischer ,  David Vanzin

IPC: B01J2/20 ,  B01J2/02 ,  C07C39/08

Abstract: The present invention relates to new lightly colored prills of hydroquinone. More particularly, the invention provides a new method for preparing said lightly colored prills of hydroquinone. The invention also relates to said prills of hydroquinone obtained by said new method.