公开(公告)号：WO2017180328A1

公开(公告)日：2017-10-19

申请号：PCT/US2017/024885

申请日：2017-03-30

Applicant: NCH CORPORATION

Inventor： DREWNIAK, Marta ,  STEIMEL, Lyle, H.

IPC: C23F11/10 ,  C23F11/12 ,  C23F11/14 ,  C23F11/18 ,  C02F5/04 ,  C02F5/14

Abstract: A composition and method of inhibiting corrosion and white rust on metal components in a water system. The composition preferably comprises an amino-acid based polymer (most preferably a polyaspartic acid or a salt thereof), hydroxyphosphonoacetic acid, and a second phosphonic acid (preferably a phosphonocarboxylic acid), and does not require the use of regulated metals. The composition is effective even in the presence of biocides. A preferred method of inhibiting white rust comprises adding an amino-acid based polymer or hydroxyphosphonoacetic acid or both to the water system. A preferred method of inhibiting corrosion or white rust comprises adding an amino-acid based polymer, hydroxyphosphonoacetic acid, and a phosphonocarboxylic acid to the water system. Preferably the active concentrations are at least 3 ppm each of the amino-acid based polymer and hydroxyphosphonoacetic acid when added to a volume of water in the water system.

Abstract translation:

一种抑制水体系中金属组分腐蚀和白锈的组合物和方法。 该组合物优选包含基于氨基酸的聚合物（最优选聚天冬氨酸或其盐），羟基膦酰基乙酸和第二膦酸（优选膦酰基羧酸），并且不需要使用调节金属。 即使在杀生物剂存在下，该组合物也是有效的。 抑制白锈的优选方法包括向水体系中加入基于氨基酸的聚合物或羟基膦酰基乙酸或二者。 抑制腐蚀或白锈的优选方法包括将基于氨基酸的聚合物，羟基膦酰基乙酸和膦酰基羧酸加入到水体系中。 当加入到水体系中的一定体积的水中时，活性浓度优选为至少3ppm的基于氨基酸的聚合物和羟基膦酰基乙酸。

公开(公告)号：WO2019168607A1

公开(公告)日：2019-09-06

申请号：PCT/US2019/014462

申请日：2019-01-22

Applicant: NCH CORPORATION

Inventor： DREWNIAK, Marta ,  STEIMEL, Lyle, H. ,  LIST, James, Victor ,  HOLDER, Cory, J. ,  BOYETTE, Scott, M.

IPC: A01N37/16 ,  B08B9/08

Abstract: A system and method of controlling the treatment of water systems comprises multiple feeders for separately feeding treatment products, in the form of concentrated, non-hazardous, liquids with a single active ingredient, to a water system to treat various issues, such as corrosion and biofilms. A sensor verifies delivery of the treatment product to the water system. A controller controls activation of each feeder to control a feed rate according to programmed functions. The controller receives signals from sensors, which can be used as inputs in calculating feed rates or feeder activation times according to the programed functions and can alter treatment product feed rates based on real time data regarding water system chemistry or flow rates. The controller can send and receive data, signals, alerts, alarms or changes in programming to or from remote users, remote computers, or a water system controller.

公开(公告)号：WO2019005429A1

公开(公告)日：2019-01-03

申请号：PCT/US2018/035861

申请日：2018-06-04

Applicant: NCH CORPORATION

Inventor： DREWNIAK, Marta ,  STEIMEL, Lyle, H.

IPC: C02F5/12 ,  C02F5/14 ,  C23F11/04

Abstract: A composition and method of inhibiting corrosion, white rust, and scale formation on components in a water system. The composition preferably comprises an amino-acid based polymer (most preferably a potyaspartic acid or a salt thereof), hydroxyphosphonoacetic acid, and a second phosphonic acid (preferably a phosphonocarboxylic acid), and does not require the use of regulated metals. The composition is effective even in the presence of biocides. A preferred method of inhibiting white rust comprises adding an amino-acid based polymer or hydroxyphosphonoacetic acid or both to the water system. A preferred method of inhibiting corrosion, white rust, and scale formation comprises adding an amino-acid based polymer, hydroxyphosphonoacetic acid, and a phosphonocarboxylic acid to the water system. Preferably the active concentrations are at least 3 ppm each of the amino-acid based polymer and hydroxyphosphonoacetic acid when added to a volume of water in the water system.