FIELD: chemistry.
SUBSTANCE: method includes reacting 2,6-di-tert-butylphenol with formaldehyde in a medium of methanol in the presence of a catalyst at 40-60°C, followed by separation of the end product. The formaldehyde used is paraform. The process is carried out in molar ratio of 2,6-di-tert-butylphenol to formaldehyde of 1:1.05 and the catalyst used is sodium bicarbonate supported on an ion-exchange resin, which is a crosslinked copolymer of styrene and divinyl benzene, which contains quaternary ammonium groups, with dynamic exchange capacity of not less than 850-900 mg-eq/l.
EFFECT: method enables to obtain an end product with high output and quality.
2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| SPACE-HINDERED BIS-PHENOL PRODUCTION PROCESS | 2001 |
|
RU2195444C1 |
| METHOD OF SYNTHESIS OF 3,5-DI-TERT-BUTYL-4-HYDROXYMETHOXYBENZILE ALCOHOL | 1992 |
|
RU2022957C1 |
| METHOD OF PREPARING STERICALLY-HINDERED BIS- OR POLYPHENOLS | 0 |
|
SU732232A1 |
| METHOD OF PREPARING N,N-DIMETHYL(3,5-DI-TERT-BUTYL-4-HYDROXYBENZYL)AMINE | 2001 |
|
RU2201417C2 |
| METHOD OF SYNTHESIS OF 2,4,6-TRI-(3,5-DI-TERT-BUTYL-4-HYDROXYBENZYL)-MESITYLENE | 1992 |
|
RU2036893C1 |
| METHOD OF PREPARING 2,4,6-TRI-(3,5-DI-TERT-BUTYL-OXYBENZYL)-MESITYLENE | 0 |
|
SU749821A1 |
| METHOD FOR PRODUCTION OF 3,5-DI-TERT-BUTYL-4-OXYBENZYL ALCOHOL | 2006 |
|
RU2306307C1 |
| METHOD OF PREPARING N,N'-SUBSTITUTED PIPERAZINES | 1998 |
|
RU2157804C2 |
| POLYMERIC COMPOSITION AND PROCESS FOR STABILIZATION OF POLYMERS | 1990 |
|
RU2068424C1 |
