Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1988-08-05
1990-05-01
Mars, Howard T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568613, 568618, 568619, C07C 4101
Patent
active
049220292
ABSTRACT:
Etherified polyoxyalkylene derivatives of the formula ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.20 -alkyl or C.sub.3 -C.sub.5 -alkenyl, R.sup.2 and R.sup.3 independently of one another are each hydrogen, methyl or ethyl, R.sup.4 is C.sub.1 -C.sub.4 -alkyl and m and n are identical or different and are each greater than or equal to 0, with the proviso that the sum of m and n is from 3 to 300, are prepared by reacting the corresponding hydroxyl-containing polyoxyalkylene derivative with a dialkyl sulfate in the presence of an alkali metal hydroxide by a process in which the reaction is carried out at from 20.degree. to 60.degree. C. in the presence of an aqueous solution of an alkali metal hydroxide, the concentration of alkali metal hydroxide during the entire duration of the reaction being not less than 35% by weight, based on the aqueous phase, and not less than 1 mole of dialkyl sulfate and not less than one mole of alkali metal hydroxide are used per mole equivalent of organic hydroxyl groups.
REFERENCES:
patent: 2520611 (1950-08-01), Roberts et al.
patent: 3653183 (1972-04-01), Sanders et al.
patent: 3911024 (1975-10-01), Croix
patent: 4275244 (1981-06-01), Helfert et al.
patent: 4587365 (1986-05-01), Anchor
Beger et al., Germany (East), DD244549, 4/8/87.
CA 108: 5579d, 1988.
Birnbach Stefan
Houben Jochen
Mueller Josef
Wulz Klaus
BASF - Aktiengesellschaft
Mars Howard T.
LandOfFree
Etherification of polyoxyalkylene derivatives does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Etherification of polyoxyalkylene derivatives, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Etherification of polyoxyalkylene derivatives will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-831349