Method of preparing overbased calcium sulfonates

Details Method of preparing overbased calcium sulfonates Method of preparing overbased calcium sulfonates

1985-04-25

1986-08-05

Howard, Jacqueline V.

Compositions

Electrolytes for electrical devices

252 18, 252 33, 252 334, C10M13510

Patent

active

046042199

ABSTRACT:
In an overbased sulfonate process calcium hydroxide is formed in situ by the continuous and uniform addition of water to calcium oxide over the entire hydration and carbonation time rather than incrementally. It has been found that the water rate and amount are critical.
A 300 TBN product is formed with an H.sub.2 O/CaO molar ratio of 0.4 and a 3 hour hydration time. A 400 TBN product is formed with an H.sub.2 O/CaO molar ratio of 0.8 and 3 hour hydration time.
Improved filterability and raw material utilization as well as reduced by-product solids content is achieved.

REFERENCES:
patent: 3830739 (1974-08-01), Kemp
patent: 4192758 (1980-03-01), Dickey et al.
patent: 4235810 (1980-11-01), Osselet et al.
patent: 4543194 (1985-09-01), Spence et al.

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