FIELD: corrosion protection.
SUBSTANCE: aqueous carbon steel corrosion inhibitor, which may be used in production and transportation of formaldehyde products such as urea-formaldehyde concentrate, is added in amounts from 0.1 to 3% on the weight of urea-formaldehyde concentrate and 10-40% polyamine, 0.01-4% formaldehyde, and 0.01-3.5% ammonia, said polyamine having general formula 
wherein n = 0 or 1, m = 0 or 1, and n+m = 0-2.
EFFECT: expanded corrosion protection possibilities.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| NITRATE SALT CORROSION INHIBITOR FOR CARBON STEEL | 2002 |
|
RU2237747C2 |
| HYDROGEN SULFIDE NEUTRALIZER AND METHOD OF USING THE SAME | 2022 |
|
RU2800091C1 |
| METHOD FOR PREPARING POLYAMINE | 2002 |
|
RU2228925C2 |
| HYDROGEN SULPHIDE NEUTRALISER AND METHOD OF USING SAID NEUTRALISER | 2008 |
|
RU2370508C1 |
| METHOD OF PRODUCING COMPLEX NITROGEN FERTILIZER WITH PROLONGED ACTION | 2023 |
|
RU2811540C1 |
| METHOD OF PRODUCING CARBAMIDE-FORMALDEHYDE CONCENTRATE | 2018 |
|
RU2685503C1 |
| HYDROGEN SULPHIDE AND MERCAPTAN NEUTRALISER | 2009 |
|
RU2510615C2 |
| METHOD OF OBTAINING CARBAMIDE-FORMALDEHYDE CONCENTRATE | 2007 |
|
RU2331654C1 |
| METHOD FOR PRODUCTION OF UREA-FORMALDEHYDE CONCENTRATE | 2001 |
|
RU2196147C2 |
| METHOD FOR PRODUCING COMPLEX NITROGEN FERTILIZER WITH PROLONGED ACTION | 2023 |
|
RU2805182C1 |
