公开(公告)号：WO2021194688A1

公开(公告)日：2021-09-30

申请号：PCT/US2021/019870

申请日：2021-02-26

Applicant: ECOLAB USA INC.

Inventor： HATCH, Steven, R. ,  SEETHARAMAN, Jothibasu ,  DHAWAN, Ashish ,  SILVERNAIL, Carter, M. ,  BANERJEE, Santanu ,  CHERUKU, Pradeep

IPC: C23F11/10 ,  C07D235/30 ,  C23F11/14 ,  C23F11/173 ,  C02F5/12 ,  C07D235/12 ,  C07D235/18 ,  C07D401/04 ,  C02F103/02 ,  C02F2103/023 ,  C02F2303/08 ,  C02F5/125 ,  C07D235/06 ,  C08K5/3447 ,  C09D179/02 ,  C09D5/086 ,  C23F11/149

Abstract: A method of preventing formation of rust on a metal surface is provided. The method may include applying a polyamine onto the metal surface and applying a compound of formula (I) or salt thereof onto the metal surface. The compositions and methods disclosed herein may be used to inhibit corrosion of a metal surface in contact with an aqueous system (Formula I).

公开(公告)号：WO2021247832A1

公开(公告)日：2021-12-09

申请号：PCT/US2021/035656

申请日：2021-06-03

Applicant: ECOLAB USA INC.

Inventor： DHAWAN, Ashish ,  MOLONEY, Jeremy ,  SILVERNAIL, Carter M.

IPC: A01P1/00 ,  C07C43/184 ,  C08G65/08 ,  C02F1/68 ,  C02F2303/08 ,  C02F2305/04 ,  C07C43/23 ,  C08G65/2612 ,  C23F11/12 ,  C23F11/141 ,  C23F11/149 ,  C23F11/173

Abstract: Disclosed are oxyalkylated surfactants used in compositions and methods for inhibiting corrosion.

公开(公告)号：WO2021208602A1

公开(公告)日：2021-10-21

申请号：PCT/CN2021/077714

申请日：2021-02-24

Applicant: 安美科技股份有限公司

Inventor： 孙果洋 ,  汪小龙

IPC: C07D249/18 ,  C23F11/14 ,  C23F11/149

Abstract: 本发明提供了一种苯并三氮唑衍生物缓蚀剂及其制备方法与应用，制备方法包括以下步骤：将苯并三氮唑、二乙醇胺和甲醛置于在反应容器中进行混合，获得混合原料；边搅拌所述混合原料边升温至85℃～110℃，然后保温反应预设时间；降温至室温，获得产品。制备的苯并三氮唑衍生物类的铜缓蚀剂具有优良亲水性可以直接使用不用先转换成水溶性盐再使用，缓腐蚀性能良好，且不受欧盟REACH规范所限制使用；另外，本发明的苯并三氮唑衍生物缓蚀剂的制备方法简单，易于应用在工业生产。

公开(公告)号：WO2021126746A1

公开(公告)日：2021-06-24

申请号：PCT/US2020/064804

申请日：2020-12-14

Applicant: SAUDI ARABIAN OIL COMPANY ,  ARAMCO SERVICES COMPANY

Inventor： NAGU, Muthukumar ,  ALANAZI, Nayef, M.

IPC: C10G75/02 ,  C07C229/52 ,  C07C317/04 ,  C10G21/20 ,  C10G21/22 ,  C10G2300/203 ,  C23F11/144 ,  C23F11/149 ,  C23F11/16

Abstract: Corrosion inhibitor compositions and methods for inhibiting corrosion on a metal surface exposed to a hydrocarbon fluid are provided. The corrosion inhibitor composition can comprise 2-aminoterephthalic acid, dimethyl sulfoxide and heavy aromatic naphtha (HAN). In another embodiment, the composition can comprise 4-methylamino benzoic acid or 4-methylsulfonyl benzoic acid, N-methyl pyrrolidone, and HAN. In the method, a corrosion inhibitor composition comprising 2-aminoterephthalic acid, 4-methylamino benzoic acid, or 4-methylsulfonyl benzoic acid can be added to a hydrocarbon fluid exposed to the metal surface. The corrosion can be caused by naphthenic acid.

公开(公告)号：WO2021091123A2

公开(公告)日：2021-05-14

申请号：PCT/KR2020/014357

申请日：2020-10-20

Applicant: 극동제연공업 주식회사

Inventor： 박재윤 ,  박현진 ,  이홍기 ,  김자원

IPC: C09K5/20 ,  C09B47/08 ,  C23F11/14 ,  C23F11/149

Abstract: 본 발명은 열전달 유체용 착색제 및 이를 포함하는 조성물에 관한 것이다.