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US 4,400,562 AGranted
Alkenol synthesis
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsKerry L. Wagaman, Larry D. Henderson
Life of this patent
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Abstract
3-Buten-1-ol is synthesized from 1,3-butanediol by heating a polyol in the resence of a trivalent metal sulfate to a temperature from about 70.degree. C. below to about 100.degree. C. above the boiling point of 1,3-butanediol.
Claims5
A method for synthesizing an alkenol from 1,3 butanediol in the liquid phase which comprises:
- admixing a trivalent metal sulfate selected from the group consisting of aluminum sulfate, chromium sulfate, ferric sulfate, and mixtures thereof, as a catalyst, with 1,3-butanediol, in an effective amount, thereby forming a mixture of said catalyst suspended in 1,3-butanediol;
- heating said mixture to a temperature from about 70.degree. C. below to about 100.degree. C. above the boiling point of 1,3-butanediol, thereby partially dehydrating 1,3-butanediol to 3-buten-1-ol which flash-evaporates to a vapor;
- and
- condensing said vapor to isolate 3-buten-1-ol.
1 more element
A method for synthesizing an alkenol from 1,3 butanediol in the liquid phase which comprises:
- admixing an effective amount of a trivalent metal sulfate selected from the group consisting of aluminum sulfate, ferric sulfate, chromium sulfate, and mixtures thereof, as a catalyst, with an inert diluent having a boiling point higher than 3-buten-1-ol, thereby forming a mixture of said catalyst suspended in said diluent;
- heating said mixture to a temperature from about 70.degree. C. below to about 100.degree. C. above the boiling point of 1,3-butanediol;
- adding slowly 1,3-butanediol to said mixture, thereby partially dehydrating 1,3-butanediol to 3-buten-1-ol which flash-evaporates to a vapor;
- and
- condensing said vapor to isolate 3-buten-1-ol.
2 more elements
Dependencies are inferred from the claim text.