Process for the preparation of a mixture of low-molecular weight

Details Process for the preparation of a mixture of low-molecular weight Process for the preparation of a mixture of low-molecular weight

1981-03-09

1983-08-23

Evans, J. E.

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

Organic compounds

Oxygen containing

521158, 528275, 568678, 568679, 568680, C07C 3118

Patent

active

044005601

ABSTRACT:
A process for preparing a mixture of polyhydroxyl compounds having low molecular weight by catalytically hydrogenating a formose mixture with hydrogen on a metal catalyst. The hydrogenation is carried out at a pH of 7.5 to 12.5 and at elevated temperature and pressure. The formose mixture comprises (i) up to 70 wt. % formose, (ii) up to 1.6 wt. % lead ions and (iii) up to 5 wt. % calcium ions with at least one of (ii) or (iii) being present. The catalyst which is present in an amount of 4-240 wt. % (based on formose solution) is a compound taken from the group consisting of nickel, cobalt and compounds thereof. The mixture of polyhydroxyl compounds made in accordance with the present invention is useful as a starting material in the production of polyether polyols, polyester polyols and polyurethane plastics.

REFERENCES:
patent: 2174651 (1939-10-01), Byrkit, Jr.
patent: 2271083 (1942-01-01), Lorand
patent: 2276192 (1942-03-01), Handford et al.
patent: 2775621 (1956-12-01), MacLean et al.
patent: 4156636 (1979-05-01), Muller et al.
patent: 4219508 (1980-08-01), Wagner
patent: 4258222 (1981-03-01), Mohring et al.
patent: 4300003 (1981-11-01), Mohring et al.
R. D. Partridge, A. H. Weiss & D. Todd, Carbohydrate Research, 24, 42 (1972).
L. Orthner and E. Gerisch (Biochem. Zeitung 259, 30 (1933).
Practical Catalytic Hydrogenation, Techniques & Applications, pp. 23-25, Wiley-Interscience, M. Friefelder (1971).

Affiliated with

Also associated with

Rating

Process for the preparation of a mixture of low-molecular weight 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 a mixture of low-molecular weight, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of a mixture of low-molecular weight will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1948302