Composition Comprising Choline Hydroxide And Process For Preparing The same
The present invention relates to a composition comprising choline hydroxide, a solvent, and one or more stabilizers selected from the group consisting of a hydride and choline sulfite.
1 . Composition comprising choline hydroxide, a solvent, and one or more stabilizers selected from the group consisting of a hydride and choline sulfite.
2 . A composition according to claim 1 wherein the stabilizer is an alkali metal borohydride salt.
3 . A composition according to claim 1 wherein the amount of choline hydroxide is 10-60 wt % based on the total weight of the composition.
4 . A composition according to claim 1 wherein the amount of stabilizer is between 1 and 500 ppm.
5 . A composition according to claim 1 , further comprising one or more additional stabilizing compounds.
6 . A masterbatch comprising 10 to 60 wt % choline hydroxide, 5 to 20 wt % of one or more stabilizers selected from the group consisting of a hydride and choline sulfite, and the remaining part being solvent, based on the total weight of choline hydroxide, stabilizer and solvent.
7 . A process for preparing the composition according to claim 1 by combining one or more stabilizers selected from the group consisting of a hydride and choline sulfite, with a choline hydroxide solution.
8 . A process for preparing the composition according to claim 1 comprising the steps of reacting ethylene oxide with trimethylamine in the presence of one or more stabilizers selected from the group consisting of a hydride and choline sulfite, said stabilizer being added to the ethylene oxide, the trimethylamine and/or the reaction mixture.
9 . A process according to claim 7 wherein the stabilizer is an alkali metal borohydride salt.
10 . A process according to claim 7 , further comprising the step of utilizing the composition in the production of paper.
11 . A composition according to claim 1 wherein the stabilizer is a sodium borohydride salt.
12 . A composition according to claim 1 wherein the amount of choline hydroxide is 40-50 wt % based on the total weight of the composition.
13 . A composition according to claim 1 wherein the amount of stabilizer is between 50 and 200 ppm.
14 . A composition according to claim 5 wherein the one or more additional stabilizing compound is sodium sulfite.
15 . A process according to claim 7 wherein the stabilizer is a sodium borohydride salt.
16 . A process according to claim 8 wherein the stabilizer is an alkali metal borohydride salt.
17 . A process according to claim 8 wherein the stabilizer is a sodium borohydride salt.