Process for the preparation of boric oxide by hydrolysis of meth

Details Process for the preparation of boric oxide by hydrolysis of meth Process for the preparation of boric oxide by hydrolysis of meth

1991-09-25

1993-08-10

Langel, Wayne

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

203 51, 203 70, 423278, 568821, 568912, B01D 334, C07C 3508

Patent

active

052351173

ABSTRACT:
For preparing at least one boric oxide in an anhydrous or hydrated form and of general formula B.sub.2 O.sub.3, xH.sub.2 O, in which x is a number from 0 to 3, a methyl borate hydrolyzate comprising boric oxide and methanol is introduced into a distillation column is introduced the product from, at least one compound (preferably a hydrocarbon such as, e.g., 2,3-dimethyl butane or 2-methyl pentane) forming a heteroazeotrope with methanol, said heteroazaeotrope having a boiling point below that of the azeotrope formed by methyl borate with methanol and at least one compound having a boiling point higher than that of methyl borate, said compound not forming an azeotrope with a boiling point below that of said heteroazeotrope and then at the head of the column said heteroazeotrope is recovered and at the bottom of the column a suspension containing at least one boric oxide.
A description is also given of a process for the oxidation of at least one saturated hydrocarbon into a product incorporating the corresponding alcohol wherein oxidation is carried out with oxygen in the presence of a boric oxide with. The oxidation product is hydrolyzed into orthoboric acid and alcohol, which is recovered by separation from the organic phase. The aqueous phase containing the boric acid is fed into a methyl borate formation zone and the methyl borate is recovered in the form of its azeotrope with methanol. The recovery of the boric oxide from said azeotrope is performed in accordance with the aforementioned process, the recovered boric oxide being recycled to the oxidation stage.

REFERENCES:
patent: 2642453 (1953-06-01), Lippincott
patent: 2833623 (1958-05-01), May et al.
patent: 2880144 (1959-03-01), Bush
patent: 3086039 (1963-04-01), Carter
patent: 3243449 (1966-03-01), Winnick
patent: 3516788 (1970-06-01), Fusby
patent: 3665028 (1972-05-01), Russell
patent: 3796761 (1974-03-01), Marcell et al.
patent: 4058565 (1977-11-01), Thiel et al.
patent: 4908196 (1990-03-01), Vasconi et al.
R. F. Nickerson, "Heat of Complexing of Boric Acid from Hydrolysis of Methyl Borate", J. Inorg. Nucl. Chem., 1971, vol. 33, pp. 1665-1671.

Affiliated with

Also associated with

Rating

Process for the preparation of boric oxide by hydrolysis of meth 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 boric oxide by hydrolysis of meth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of boric oxide by hydrolysis of meth will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1726819