FIELD: chemistry.
SUBSTANCE: method of recycling polymer wastes is realised in alcohol solvents in supercritical state, in closed-type reactors at temperature and pressure higher than critical values for the starting reaction mixture. The lower alcohol used is methyl alcohol, ethyl alcohol, propyl alcohol or isopropyl alcohol. The process is carried out at pressure 100-270 atm and temperature 200-260°C in an autoclave reactor while stirring.
EFFECT: method enables to carry out depolymerisation and conversion of polymer materials to homogeneous liquid compounds with high degree of conversion over a short contact time.
6 cl, 7 ex
| Title | Year | Author | Number |
|---|---|---|---|
| PROCESSING METHOD OF WASTE CARBOCHAIN THERMOPLASTIC | 2018 |
|
RU2701935C1 |
| METHOD FOR PRODUCTION OF DIESTERS OF TEREPHTHALIC ACID AND DIOLES OF POLYESTERS | 1993 |
|
RU2103257C1 |
| METHOD OF OBTAINING WATER-REDISPERSIBLE POLYMER POWDERS | 2015 |
|
RU2618253C2 |
| METHOD OF PRODUCING WATER-RE-DISPERSIBLE POLYMER POWDER | 2015 |
|
RU2594215C1 |
| METHOD OF PRELIMINARILY TREATING POLYMER WASTER BEFORE PROCESSING | 2004 |
|
RU2299896C2 |
| METHOD OF PRODUCING AROMATIC DIAMINES AND TRIAMINES FROM AROMATIC NITRO-COMPOUNDS | 2013 |
|
RU2549618C1 |
| METHOD OF ORGANIC AND POLYMER WASTES PROCESSING | 2011 |
|
RU2496587C2 |
| METHOD OF PRODUCING 1,5,8-PARA-MENTHATRIENE | 2013 |
|
RU2522434C1 |
| METHOD OF THE THERMAL ISOMERIZATION OF ALPHA-PINENE IN THE SUPERCRITICAL FLUIDS | 2006 |
|
RU2300514C1 |
| METHOD OF PRODUCING α-CAMPHOLENE ALCOHOL | 2011 |
|
RU2461540C1 |
