IP Library › Patent Application 15696098
Patent Application
App. No. 15/696,098

PROCESS AND SYSTEMS FOR OBTAINING 1,4-BUTANEDIOL FROM FERMENTATION BROTHS

Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US None
App. No.
15/696,098
Abstract

A process of purifying 1,4-butanediol (1,4-BDO) from a fermentation broth including separating solid materials, salts and water, and subjecting the resulting material to a two, three or four column distillation system, that can include a wiped film evaporator to produce a purified 1,4-butanediol.

Claims (14)

1 - 33 . (canceled)

34 . A 1,4-butanediol-containing composition having a concentration of 1,4-butanediol of 99.00% by weight or more and not more than 99.99% by weight and containing 2-pyrrolidone or N-methylpyrrolidone in a concentration, as converted into a nitrogen atom, of from 1.0 to 25 ppm by weight, wherein the 1,4-butanediol-containing composition is used to produce tetrahydrofuran.

35 . The 1,4-butanediol-containing composition according to claim 34 , which has a pH is 5.0 or more and not more than 7.9.

36 . The 1,4-butanediol-containing composition according to claim 34 , which has a thermal stability as measured by the formation of tetrahydrofuran of not greater than about 2998 ppm by weight.

37 . A 1,4-butanediol-containing composition having a concentration of 1,4-butanediol of 99.00% by weight or more and not more than 99.99% by weight and containing 2-pyrrolidone in a concentration of from 2.0 to 141.0 ppm by weight, wherein the 1,4-butanediol-containing composition is used to produce tetrahydrofuran.

38 . The 1,4-butanediol-containing composition according to claim 37 , containing 2-pyrrolidone in a concentration of from 5.0 to 9.0 ppm by weight.

39 . The 1,4-butanediol-containing composition according to claim 37 , which has a pH is 5.0 or more and not more than 7.9.

40 . The 1,4-butanediol-containing composition according to claim 37 , which comprises levels of tetrahydrofuran of not greater than about 504 ppm by weight.

41 . The 1,4-butanediol-containing composition according to claim 37 , which comprises levels of tetrahydrofuran of about 504 ppm by weight.

42 . A 1,4-butanediol-containing composition having a concentration of 1,4-butanediol of 99.00% by weight or more and not more than 99.99% by weight and containing 2-pyrrolidone in a concentration, as converted into a nitrogen atom, of from 0.3 to 23.0 ppm by weight, wherein the 1,4-butanediol-containing composition is used to produce tetrahydrofuran.

43 . The 1,4-butanediol-containing composition according to claim 42 , containing 2-pyrrolidone in a concentration, as converted into a nitrogen atom, of from 0.8 to 1.5 ppm by weight.

44 . The 1,4-butanediol-containing composition according to claim 42 , which has a pH of 5.0 or more and not more than 7.9.

45 . The 1,4-butanediol-containing composition according to claim 42 , which comprises levels of tetrahydrofuran of not greater than about 504 ppm by weight.

46 . The 1,4-butanediol-containing composition according to claim 42 , which comprises levels of tetrahydrofuran of about 504 ppm by weight.