Claims
- 1. A one-step process for the hydrolysis and hydrogenation of a cyclic acetal-aldehyde of the general formula ##STR5## wherein X is ##STR6## which M is alkyl of 1 to 20 carbon atoms and R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are the same or different hydrogen or alkyl of 1 to 20 carbon atoms which comprises contacting the cyclic acetal-aldehyde with the combination of hydrogen, water at a molar ratio of water to acetal-aldehyde of 1:1 to 100:1, separate solid particles of a strongly acid water insoluble ion-exchange resin and a catalytic amount of a nickel hydrogenation catalyst, said ion-exchange resin to nickel catalyst weight ratio being 0.1:1 to 100:1 at a temperature of from 65.degree. to 150.degree. C and a hydrogen pressure of from 500 to 10,000 psig to form the corresponding polyol.
- 2. The process of claim 1 wherein the hydrogenation catalyst is Raney nickel.
- 3. The process of claim 1 wherein the insoluble resin is a sulfonated styrene-divinyl benzene copolymer.
- 4. The process of claim 1 wherein M is an alkyl group containing 3 carbon atoms.
- 5. The process of claim 1 wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are hydrogen or methyl.
- 6. The process of claim 4 wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are hydrogen or methyl.
- 7. The process of claim 1 wherein the cyclic acetal-aldehyde is 2(2'-propanal)-5-methyl dioxane.
- 8. The process of claim 1 wherein the cyclic acetal-aldehyde is 2(3'-propanal)-5-methyl dioxane.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2523840 |
May 1975 |
DT |
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CROSS REFERENCE TO RELATED APPLICATION
This is a continuation-in-part of copending application Ser. No. 494,292, filed Aug. 2, 1974 and now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
2888492 |
Fischer et al. |
May 1959 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
824,551 |
Dec 1959 |
UK |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
494292 |
Aug 1974 |
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