Organic compounds -- part of the class 532-570 series – Organic compounds – Carbonate esters
Patent
1994-03-29
1997-05-06
Richter, Johann
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbonate esters
C07C 6806
Patent
active
056273010
ABSTRACT:
A process for the preparation of mono-alkylcarbonate of bisphenols of the formula ##STR1## wherein R.sub.1 represents ispropylidene, hexa-fluoroisopropylidene, cyclohexane, sulphone, ketone, ether, phthaline, phthalimide and R.sub.2 represents an alkyl group with 1-8 carbon atoms the alkyl group being ethyl, propyl, butyl, hexyl, isopropyl, iso-butyl, tert-butyl, cyclohexyl which comprises reacting bisphenols of the formula ##STR2## where R.sub.1 represents ispropylidene, hexa-fluoroisopropylidene, cyclohexane, sulphone, ketone, ether, phthaline, phthalimide with dialkylcarbonates in presence of a catalyst selected from organometallic compounds of tin and titanium under inert atmosphere at a temperature in the range of 80.degree.-150.degree.C.
REFERENCES:
patent: 4217438 (1980-08-01), Brunelle et al.
patent: 4349486 (1982-09-01), Brunelle et al.
patent: 4973728 (1990-11-01), Tuinstra et al.
patent: 5034557 (1991-07-01), Kiso et al.
patent: 5149856 (1992-09-01), Sch on et al.
patent: 5380908 (1995-01-01), Murata et al.
Buysch, H.J. et al., Derwent Abstract No. 79-16135B; 1979; German Patent Application No. 2736062.
Shaikh Abbas A. G.
Swaminathan Sivaram
Ambrose Michael G.
Council of Scientific & Industrial Research
Richter Johann
LandOfFree
Process for the preparation of mono-alkylcarbonate of bisphenols does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the preparation of mono-alkylcarbonate of bisphenols, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of mono-alkylcarbonate of bisphenols will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2133820