Process for the preparation of alkali metal acetates

Details Process for the preparation of alkali metal acetates Process for the preparation of alkali metal acetates

1992-12-02

1996-03-05

Lieberman, Paul

Compositions

Frost-preventing, ice-thawing, thermostatic, thermophoric,...

252 76, 252 79, 106 13, C09K 318

Patent

active

054964822

ABSTRACT:
To prepare a corrosion-inhibiting liquid de-icing agent based on alkali metal acetates, 30 to 50 percent strength by weight alkali metal hydroxide solution is introduced into a reaction container provided with a cooling device and a mixing device, and 85 to 100% strength acetic acid is metered into the reaction container until the ratio by weight of acetic acid to alkali metal hydroxide solution therein (0.30 to 0.45):1. A portion of this solution is transferred from the reaction container to a stirred dissolving tank and 0.03 to 1% by weight, relative to the batch, of benzotriazole and/or tolyltriazole and/or imidazole is dissolved therein. The resulting solution containing azole is introduced into the reaction container along with 0.01 to 0.2% by weight of phosphoric acid, relative to the batch. Acetic acid continues to be metered into the reaction container until the density of the solution in the reaction container is 1.07 to 1.39 g/cm.sup.3 at 20.degree. C. Small amounts of alkali metal hydroxide solution or acetic acid are then introduced into the reaction container until the pH of the solution therein is 9.2 to 9.8. Finally, this solution is withdrawn from the reaction container as a liquid de-icing agent.

REFERENCES:
patent: 4377488 (1983-03-01), Gancy
patent: 4855071 (1989-08-01), Todd, Jr. et al.
patent: 5132035 (1992-07-01), Hoenke et al.
patent: 5238592 (1993-08-01), Stankowiak et al.

Affiliated with

Also associated with

Rating

Process for the preparation of alkali metal acetates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of alkali metal acetates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of alkali metal acetates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1410771