FIELD: polymer industry.
SUBSTANCE: invention relates to the field of high-molecular compounds, namely to a method for producing polymer hydrogels of the amphoteric type based on hydrolyzed polyacrylamide, which can be used, for example, as a sorbent. The method for producing a polyampholytic hydrogel involves the interaction of a compound containing carboxyl groups and an organic base. Hydrolyzed polyacrylamide is used as a compound containing carboxyl groups. Aliphatic diamine is used as an organic base. The initial components are taken in a molar ratio from 1:0.05 to 1: 0.2. The process is carried out for 110-130 minutes at a temperature of 40÷55°C.
EFFECT: simplification of the technology for producing polyampholytic hydrogel by eliminating the use of an initiator and a crosslinking agent while increasing the degree of swelling of polyampholytic hydrogel when removing colored impurities from wastewater.
1 cl, 5 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING POLYAMPHOLYTE | 2019 |
|
RU2714670C1 |
| METHOD OF POLYMERIC HYDROGEL PREPARATION | 2015 |
|
RU2623222C2 |
| PACKAGE OF REPEATABLE CROSS-LINKED POLYMERIC PARTICLES FOR CONFIGURATION AND LIQUID LOSS CONTROL | 2017 |
|
RU2744247C2 |
| METHOD OF PREPARING POLYMER HYDROGEL | 2007 |
|
RU2378290C2 |
| UNDERGROUND FORMATIONS PLUGGING PROCESS | 2009 |
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| FIBER SORBENT | 2017 |
|
RU2653037C1 |
| METHOD OF OBTAINING GEL OF (CO) | 2013 |
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RU2537401C1 |
| CROSS-LINKED CLAYEY POLYMER GELS IN NEW PHYSICAL FORMS, METHODS OF THEIR PRODUCTION AND APPLICATION | 2008 |
|
RU2480276C2 |
| COMPOSITE MATERIAL CAPABLE OF FORMING HYDROGEL, AND HYDROGEL | 2005 |
|
RU2298022C2 |
| METHOD OF PRODUCING GROUTING COMPOSITION FOR WATERPROOFING STRUCTURE IN ROCKS OF WATER-SOLUBLE SALTS | 2015 |
|
RU2597907C1 |
