公开(公告)号：US20180305617A1

公开(公告)日：2018-10-25

申请号：US15768089

申请日：2016-10-17

Applicant: ECOLAB USA INC.

Inventor： Jasbir S. GILL ,  Peter E. REED ,  Santanu BANERJEE ,  Anand HARBINDU ,  Yinyin TONG

IPC: C09K15/06 ,  C08F122/06 ,  C23F11/12

CPC classification number: C09K15/06 ,  C08F2/06 ,  C08F2/10 ,  C08F122/02 ,  C08F122/06 ,  C23F11/08 ,  C23F11/124 ,  C23F11/173

Abstract: Maleic anhydride homopolymer corrosion inhibitors, maleic acid homopolymer corrosion inhibitors, methods for preparing the same, and methods of inhibiting corrosion are provided. The corrosion inhibitors may exclude phosphorus and may contain a hydrolysate of a maleic anhydride homopolymer or a hydrolysate of a maleic acid homopolymer. The maleic acid homopolymer may include from about 2 to about 5 maleic acid repeating units and the maleic anhydride homopolymer may include from about 2 to about 5 maleic anhydride repeating units.

公开(公告)号：US20210301151A1

公开(公告)日：2021-09-30

申请号：US17186631

申请日：2021-02-26

Applicant: ECOLAB USA INC.

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

IPC: C09D5/08 ,  C09D179/02

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.