Dissolution of hexamine in non-aqueous solvent

Patent metadata

Field	Value
Publication number	US-2018282637-A1
Application number	US-201815935370-A
Country	US
Kind code	A1
Filing date	Mar 26, 2018
Priority date	Mar 29, 2017
Publication date	Oct 4, 2018
Grant date	—

Abstract

The present disclosure generally relates to scavenging hydrogen sulfide. The disclosure pertains to non-aqueous and non-volatile compositions that include a monolignol alcohol and hydrogen sulfide scavenging compound. The hydrogen sulfide scavenging compound may be hexamine in some aspects. The compositions may also include a C 2-8 polyol. The compositions disclosed are stable and can be used, for example, in removing hydrogen sulfide from hot asphalt.

First claim

What is claimed is:

1 . A composition, comprising: a monolignol alcohol and a compound of formula (I) or formula (II)

where R 1 is a substituted or unsubstituted C 1-8 alkyl, a substituted or unsubstituted C 2-8 alkenyl, or a substituted or unsubstituted C 2-8 alkynyl, wherein the substituted C 1-8 alkyl, the substituted C 2-8 alkenyl, and the substituted C 2-8 alkynyl are substituted with hydroxyl or C 1-5 alkyl.

2 . The composition of claim 1 , wherein the monolignol alcohol is selected from the group consisting of p-coumaryl alcohol, coniferyl alcohol, sinapyl alcohol, cinnamyl alcohol, and any combination thereof.

3 . The composition of claim 1 , wherein the monolignol alcohol is cinnamyl alcohol.

4 . The composition of claim 1 , wherein the monolignol alcohol is coniferyl alcohol.

5 . The composition of claim 1 , wherein the compound is hexamine.

6 . The composition of claim 1 , further comprising a C 2-8 polyol.

7 . The composition of claim 6 , wherein the C 2-8 polyol is glycerin.

8 . The composition of claim 1 , comprising the compound of formula (I), cinnamyl alcohol, and glycerin.

9 . The composition of claim 1 , wherein the composition comprises about 2 to about 20 weight percent of the compound of formula (I) or formula (II).

10 . The composition of claim 1 , wherein the composition comprises about 10 to about 98 weight percent of the monolignol alcohol.

11 . The composition of claim 6 , wherein the composition comprises about 2 to about 80 weight percent of the C 2-8 polyol.

12 . The composition of claim 6 , wherein a weight ratio of the monolignol alcohol to the C 2-8 polyol is about 10:1 to about 20:1.

13 . The composition of claim 1 , wherein a weight ratio of the compound of formula (I) or formula (II) to monolignol alcohol is about 1:15 to about 1:1.

14 . The composition of claim 1 , wherein the composition comprises an amount of water that is less than about 1% by weight.

15 . The composition of claim 1 , wherein the composition excludes water.

16 . The composition of claim 1 , wherein the composition comprises a pH greater than about 7.

17 . A method for scavenging hydrogen sulfide in an industrial process, comprising:
adding an effective amount of a composition to a medium in the industrial process, wherein the composition comprises a monolignol alcohol and a compound of formula (I) or formula (II)

where R 1 is a substituted or unsubstituted C 1-8 alkyl, a substituted or unsubstituted C 2-8 alkenyl, or a substituted or unsubstituted C 2-8 alkynyl, wherein the substituted C 1-8 alkyl, the substituted C 2-8 alkenyl, and the substituted C 2-8 alkynyl are substituted with hydroxyl or C 1-5 alkyl.

18 . The method of claim 17 , further comprising a C 2-8 polyol, and wherein the monolignol alcohol is cinnamyl alcohol.

19 . The method of claim 17 , wherein the effective amount is in a range from about 0.00001 ppm to about 100,000 ppm.

20 . The method of claim 17 , wherein the medium is selected from the group consisting of crude oil, diesel fuel, asphalt and any combination thereof.

Assignees

• Ecolab Usa Inc

Inventors

• Solomon Kim R

Classifications

• C10G29/22 Primary

  containing oxygen as the only hetero atom · CPC title

• C04B41/5315

  Cleaning compositions, e.g. for removing hardened cement from ceramic tiles · CPC title

• C04B26/26

  Bituminous materials, e.g. tar, pitch {(C08L95/00 takes precedence)} · CPC title

• C08L95/00

  Compositions of bituminous materials, e.g. asphalt, tar, pitch · CPC title

• C02F2101/101

  Sulfur compounds · CPC title