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：US12031036B2

公开(公告)日：2024-07-09

申请号：US17500302

申请日：2021-10-13

Applicant: Sennics Co., Ltd.

Inventor： Yang Gao ,  Jin Zhang ,  Zhimin Tang

IPC: C08L9/00 ,  B60C1/00 ,  C08K3/04 ,  C08K5/3437 ,  C08K13/02 ,  C08L7/00

CPC classification number: C08L9/00 ,  C08K5/3437 ,  C08K13/02 ,  C08L7/00 ,  B60C1/00 ,  C08K3/04 ,  C08L2201/08 ,  C08L2205/03 ,  C08L2312/00 ,  C08L7/00 ,  C08L9/00 ,  C08K13/02 ,  C08K5/3437

Abstract: A formulation for rubber composition with reduced odor and good thermal oxidative aging-resistance and tension fatigue resistance comprising 100 parts by weight of a diene elastomer, 30 to 70 parts by weight of a reinforcing filler, 0.1 to 8 parts by weight of an antidegradant composition, and 0.5 to 3 parts by weight of a crosslinker, wherein the antidegradant composition includes a 6PPD antidegradant with a purity of equal to or greater than about 98% and an S-TMQ. The rubber composition has no added odor inhibitor/adsorbent or deodorizing additive, while by using combination of 6PPD with purity of equal to or greater than about 98% and an S-TMQ instead of traditional combination of 6PPD and a TMQ, the VOC emission of the rubber composition is effectively reduced, the odor grade is reduced, and the thermal oxidative aging-resistance and tension fatigue resistance is improved.

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.