FIELD: chemistry.
SUBSTANCE: invention relates to a method of processing 2,6-tert-butyl-4-methylphenol stabiliser production wastes (resins from the fractionation step) to obtain 4,4-ethylene bis(2,6-di-tert-butylphenol). The method includes dissolving resin at 50-60°C and maintaining said temperature for 30 minutes, where the solvent used is lower saturated C1-C3 alcohols, C6-C8 alkanes (volume ratio resin:solvent = 1:(0.3-0.5)), cooling to final temperature of (+5-0)°C, crystallising at said temperature for 1.5-2 hours, washing the crystals with hexane and drying in a nitrogen current.
EFFECT: objective of the present invention is proper use of wastes and reducing the environmental load in the area of said production.
1 tbl, 7 ex
| Title |
Year |
Author |
Number |
| METHOD OF PRODUCING ANTICORROSION OIL ADDITIVES |
2012 |
- Movsum-Zade Ehl'Dar Mirsamedovich
- Poletaeva Ol'Ga Jur'Evna
- Movsum-Zade Nazrin Chingizovna
|
RU2480515C1 |
| METHOD OF PREPARING BIS-N,N(3,5-DI-TERT-BUTYL-4- OXYBENZYL)METHYLAMINE |
1999 |
- Nijazov N.A.
- Surkov V.D.
- Bojtsov V.P.
|
RU2165409C2 |
| BISPHENOL ESTER DERIVATIVES, STABILIZED COMPOSITION AND METHOD OF POLYMER STABILIZATION |
1995 |
- Gilg Bernard
- Pitteloud Rita
|
RU2141469C1 |
| METHOD OF PRODUCING 2,6-DI-TERT-BUTYL-4-METHOXYMETHYLPHENOL |
2014 |
- Alekseeva Ol'Ga Aleksandrovna
- Akhmed'Janova Raisa Akhtjamovna
- Liakumovich Aleksandr Grigor'Evich
- Cherezova Elena Nikolaevna
|
RU2555709C1 |
| METHOD OF PROCESSING ACID SLUDGE |
2011 |
- Movsum-Zade Ehl'Dar Mirsamedovich
- Beljaeva Al'Bina Sagitovna
- Nikitina Anna Aleksandrovna
- Kunakova Rajkhana Valiullovna
- Poletaeva Ol'Ga Jur'Evna
|
RU2470986C1 |
| MONOCLINIC CRYSTALLINE ALPHA MODIFICATION 2,2′,2″-NITRILO (THIETHYL-TRIS (3,3′,5,5′-TETRA-TERT-BUTYL -1,1′- BIPHENYL -2,2′- DIYL) PHOSPHITE, METHOD OF PREPARING THEREOF, STABILIZED COMPOSITION, AND METHOD OF STABILIZATION |
1993 |
|
RU2114856C1 |
| 2,6-DI-TERT-BUTYL-4-METHYLPHENOL (AGIDOL-1) PRODUCTION PROCESS |
1997 |
- Pantukh B.I.
- Surkov V.D.
- Logutov I.Ju.
|
RU2137749C1 |
| METHOD FOR PRODUCTION OF 2,6-DI-TERT-BUTYLPHENOL |
1999 |
- Pantukh B.I.
- Surkov V.D.
- Kolesnikov S.V.
|
RU2164509C1 |
| DERIVATIVES OF BENZOFURAN-2-ONES, STABILIZED COMPOSITION, METHOD OF STABILIZATION, DERIVATIVES OF MANDELIC ACID AND METHOD OF THEIR SYNTHESIS |
1993 |
|
RU2130931C1 |
| METHOD OF SYNTHESIS OF 2,6-DI-TERTIARY-BUTYL-4-METHYLPHENOL |
1998 |
- Nijazov N.A.
- Ikhsanov R.A.
- Surkov V.D.
- Ossovskij B.G.
|
RU2147570C1 |
