Process for production of essentially chloride-free calcium...

Details Process for production of essentially chloride-free calcium... Process for production of essentially chloride-free calcium...

2006-08-22

2006-08-22

Zucker, Paul A. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfonic acids or salts thereof

Reexamination Certificate

active

07094922

ABSTRACT:
The invention relates to a process for the preparation of a low-base number calcium sulfonate that is essentially chloride free. The process involves preparing a sulfonic acid solution by adding a solvent to a sulfonic acid, optionally removing dissolved or entrained SO2or SO3, mixing the solution with a specific amount of water and calcium hydroxide, heating the mixture, separating out excess calcium hydroxide from the mixture, removing the solvent and recovering the calcium sulfonate product in oil.

REFERENCES:
patent: 2266325 (1941-12-01), Lazar et al.
patent: 2402325 (1946-06-01), Griesinger et al.
patent: 2418894 (1947-04-01), McNab et al.
patent: 2779784 (1957-01-01), Sharrah
patent: 2846466 (1958-08-01), Crosby et al.
patent: 2884445 (1959-04-01), Axe et al.
patent: 2909563 (1959-10-01), Whitney
patent: 2915517 (1959-12-01), Le Suer
patent: 3007868 (1961-11-01), Eck et al.
patent: 3023231 (1962-02-01), Logan
patent: 3260670 (1966-07-01), Richardson
patent: 3719596 (1973-03-01), Shore et al.
patent: 4279837 (1981-07-01), Wellbrock
patent: 4615841 (1986-10-01), Stamatakis et al.
patent: 5578235 (1996-11-01), Jao et al.
patent: 5789615 (1998-08-01), Alcock et al.
patent: 5804094 (1998-09-01), Alcock et al.
patent: 709587 (1952-01-01), None
patent: 1172779 (1967-08-01), None
patent: 1179868 (1967-10-01), None
patent: 9104672 (1991-07-01), None
patent: 1002287 (1983-03-01), None
patent: 1002288 (1983-06-01), None

Affiliated with

Also associated with

Rating

Process for production of essentially chloride-free calcium... 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 production of essentially chloride-free calcium..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for production of essentially chloride-free calcium... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3690192