Process of producing dioxane glycol

Details Process of producing dioxane glycol Process of producing dioxane glycol

2008-07-22

2008-07-22

Dentz, Bernard (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

11541531

ABSTRACT:
A production method of 2-(5-ethyl-5-hydroxymethyl-1,3-dioxane-2-yl)-2-methylpropane-1-ol (DOG) which includes a step of acetalizing hydroxypivalaldehyde with trimethylolpropane in a solvent in the presence of an acid catalyst. After the acetalization, the reaction product liquid is neutralized and then heated to dissolve the deposited DOG crystals. Then, the reaction product liquid is cooled to recrystallize DOG. DOG produced in such manner has an adequately large particle size. Therefore, DOG is easy to handle and involves little danger of dust explosion.

REFERENCES:
patent: 2945008 (1960-07-01), Caldwell et al.
patent: 59-148776 (1984-08-01), None
Galiano, et al., “Formation of 1,3-Dioxanes in Water”, Journal of Organic Chemistry, vol. 29, No. 11, 1964, pp. 3424-3426.
European Search Report in connection with European Patent Application No. 06121493.8, dated Oct. 5, 2007.

Affiliated with

Also associated with

Rating

Process of producing dioxane glycol 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 of producing dioxane glycol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of producing dioxane glycol will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3957552