公开(公告)号：US20240182681A1

公开(公告)日：2024-06-06

申请号：US18147693

申请日：2022-12-28

Applicant: Sennics Co., Ltd.

Inventor： Xiaoyin ZHOU ,  Xiangyun Guo ,  Jinguo Xing ,  Jiaqiang Zhang

IPC: C08K5/18 ,  C08L7/00 ,  C08L9/00

CPC classification number: C08K5/18 ,  C08L7/00 ,  C08L9/00

Abstract: A rubber antidegradant having a structure represented by Formula A and a method for preparing the same are provided. The rubber antidegradant of the present invention may impart rubber good thermal oxidative aging resistance, ozone aging resistance, discoloration resistance, and durable performance.

公开(公告)号：US12037303B2

公开(公告)日：2024-07-16

申请号：US18148370

申请日：2022-12-29

Applicant: Sennics Co., Ltd.

Inventor： Jinguo Xing ,  Xiangyun Guo ,  Zhimin Tang

IPC: C07C209/60 ,  B01J21/04 ,  B01J21/18 ,  B01J23/42 ,  B01J23/44

CPC classification number: C07C209/60 ,  B01J21/04 ,  B01J21/18 ,  B01J23/42 ,  B01J23/44

Abstract: A method for preparing a diaryl-p-phenylenediamine compound of Formula I comprises the steps of reacting a compound of Formula II and a compound of Formula III in a condensation dehydrogenation reaction in the presence of a solvent, a hydrogen acceptor, a water-carrying agent, and a catalyst; wherein R1, R2 and R3 are independently selected and each is H, a C1-C8 alkyl, a C3-C8 cycloalkyl, a C1-C8 alkoxy, a C3-C8 cycloalkoxy, or phenyl; a and c are independently selected and each is an integer of 0 to 5, and b is an integer of 0 to 4:

公开(公告)号：US12172943B2

公开(公告)日：2024-12-24

申请号：US18384801

申请日：2023-10-27

Applicant: Sennics Co., Ltd.

Inventor： Jinguo Xing ,  Xiangyun Guo ,  Gan Liang ,  Jiaqiang Zhang ,  Zhimin Tang

IPC: C07C211/55 ,  B01J21/18 ,  B01J23/42 ,  B01J25/02 ,  B01J31/02 ,  B60C1/00 ,  C07C209/26 ,  C08K5/18 ,  C08L7/00

Abstract: A polyalkyl p-phenylenediamine antidegradant having a structure represented by Formula I, its intermediates and a preparation method thereof are provided. The polyalkyl p-phenylenediamine antidegradant provides good thermal oxidative aging resistance and UV aging resistance.

公开(公告)号：US10793510B2

公开(公告)日：2020-10-06

申请号：US15956618

申请日：2018-04-18

Applicant: Sennics Co., Ltd.

Inventor： Xiangyun Guo ,  Jinguo Xing ,  Xiaomin Ruan ,  Xinmin Chen

IPC: C07C209/60 ,  C07C209/68 ,  C07C211/55

Abstract: A method for preparing an aryl substituted p-phenylenediamine substance is provided. A structural formula of the aryl substituted p-phenylenediamine substance is shown as Formula (I′), where each of R′ and R″ is phenyl or o-methylphenyl, and R′ is same as or different from R″; and the method comprises that: a raw material A and a raw material B are reacted in the presence of a hydrogen acceptor and a catalyst to form the aryl substituted p-phenylenediamine substance, the raw material A having a structure shown as Formula (I), the raw material B being cyclohexanone and/or o-methylcyclohexanone and the hydrogen acceptor being a hydrogen acceptor capable of accepting hydrogen for conversion into the raw material B. Raw materials are low in cost and readily available; use of a large amount of water for post-treatment is avoided. The reaction condition is relatively mild, and corrosion to equipment is avoided.