FIELD: polymer waste recycling.
SUBSTANCE: invention relates to the processing of waste polymer materials, in particular waste polyethylene terephthalate. A method is proposed for processing the waste of polyethylene terephthalate by saponification of polyethylene terephthalate in a solvent medium at elevated temperature and atmospheric pressure, followed by the release of ethylene glycol, terephthalic acid and/or its salt, in which potassium or sodium salts of higher fatty acids are used as a saponifying agent, and the saponification process is carried out in a waste medium for the production of biodiesel fuel containing a saponifying agent, glycerin and methyl esters of higher fatty acids.
EFFECT: simplification of the process of processing PET waste using cheap raw materials-waste from the production of biodiesel, reducing environmental pollution.
1 cl, 1 tbl, 5 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR CALCIUM LUBRICANT PRODUCTION | 2016 |
|
RU2631112C1 |
| METHOD FOR OBTAINING TEREPHTHALIC ACID FROM SPENT POLYETHYLENE TEREPHTHALATE | 2019 |
|
RU2792727C2 |
| METHOD OF PRODUCING TEREPHTHALIC ACID FROM POLYETHYLENE TEREPHTHALATE WASTES | 2020 |
|
RU2724893C1 |
| METHOD FOR WASTE PET ALKALINE HYDROLYSIS WITH TEREPHTHALIC ACID PRODUCTION | 2016 |
|
RU2616299C1 |
| METHOD FOR PREPARING ALKYD OLIGOMERS | 2001 |
|
RU2209818C1 |
| COBALT SALTS OF N-(BENZTHIAZOLYL-2)-SUCCINAMINIC ACIDS OR THEIR HYDROGENATED ANALOGS AS CATALYSTS OF REETHERIFICATION OF DIMETHYLTHEREPHTHALATE WITH ETHYLENE GLYCOL | 0 |
|
SU1030362A1 |
| POLYESTER POLYOLS BASED ON AROMATIC DICARBOXYLIC ACIDS | 2011 |
|
RU2609261C2 |
| CONTINUOUS PROCESS FOR PRODUCING POLYETHYLENETEREPHTHALATE | 0 |
|
SU973552A1 |
| IMPROVED POLYAMIDE DISPERSIONS WITH HIGH CONTENT OF CARBOXYL GROUPS IN POLYESTERS USING INTERFACIAL TENSION REDUCING AGENT | 2006 |
|
RU2420543C2 |
| LAYERED SILICATE CATALYST FOR SYNTHESIS OF POLYETHYLENE TEREPHTHALATE | 2022 |
|
RU2808476C1 |
