Terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning and its preparation method
US9714181B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2014 |
| Grant date | Jul 25, 2017 |
| Priority date | — |
| Expiry date | Dec 29, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/08
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning, containing tourmaline, polyaspartic acid, polyepoxysuccinic acid, polymaleic acid, etidronic acid, zinc salt, and the like, wherein the content of the tourmaline is 5-500 g/t (calculated based on solid form); the content of polyaspartic acid, polyepoxysuccinic acid, polymaleic acid and etidronic acid is 2-60 g/t (calculated based on liquid form); and the content of the zinc salt is 0.2-0.8 g/t (calculated based on solid form), is provided. Also disclosed is a method of preparing the terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.