Powdered overbased amorphous alkaline earth metal salts and processes for making

A technology of alkaline earth metal salts and alkaline earth metals, applied in the direction of carboxylate preparation, carboxylate preparation, chemical instruments and methods, etc., can solve problems such as easy to pour, liquid calcium-based composition is not uniform, etc., to achieve improved performance, Effects of improved transparency and fouling resistance, ease of handling and storage

Inactive Publication Date: 2006-11-15
OMG AMERICAS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, liquid calcium-based compositions are no longer homogeneous or easy to pour, requiring special handling during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The method of the present invention for preparing a storage-stable, turbid-free liquid alkaline earth metal salt of a fatty acid comprises reacting an alkaline earth metal base and a fatty acid in the presence of a liquid hydrocarbon mixture, the equivalent ratio of the metal base to the fatty acid being greater than 1:1. Surfactants and catalysts catalyze the reaction. The resulting mixture is acidified and preferably carbonated to produce an amorphous alkaline earth metal carbonate. During carbonation, a dispersion containing relative amounts of alkaline earth metal base, liquid hydrocarbon, and fatty alcohol having at least 8 carbon atoms is added at a controlled base addition rate to produce a stable and cloud-free liquid reaction product. Water is removed from the reaction product to produce a storage-stable, cloud-free liquid overbased alkaline earth metal salt. In general, it is preferred that the entire process be carried out in the absence of free oxygen, a ni...

Embodiment 1

[0078] 10% Overbased Calcium Oleate / Calcium Carbonate

[0079] A phenol-free 10% overbased calcium oleate / calcium carbonate was prepared according to this example. A mixture of 308.42 g oleic acid (1.100 moles), 213.15 g mineral oil, 154.14 g isodecyl alcohol, 63.08 g butyl carbitol, 8.70 g triethylene glycol, 26.97 g water and 0.87 g propionic acid was stirred under nitrogen atmosphere Lower heat to 190°F. A dispersion consisting of 38.98 g of mineral oil, 13.86 g of isodecyl alcohol, 3.71 g of butyl carbitol and 43.28 g of lime (0.5498 moles) was added continuously to the stirred mixture over a period of about 33 minutes to prepare calcium oleic acid in the mixture saline solution. The dispersion was added at a rate of about 3 g / min. At this reaction point, the basicity of the mixture was tested with phenolphthalein (approximately 10-12 pH). Then, a dispersion consisting of 276.25 g of mineral oil, 98.23 g of isodecyl alcohol, 26.31 g of butyl carbitol and...

Embodiment 2

[0081] 14% Overbased Calcium Oleate / Calcium Carbonate

[0082] A phenol-free overbased calcium oleate / calcium carbonate containing 14% by weight calcium was prepared according to this example. Into a 3-liter resin kettle equipped with an overhead stirrer, two gas inlet tubes, a thermocouple, a heating mantle, and a Dean-Stark trap with a condenser, was charged 1700 g of the 9.89% Overbased Calcium Oleate / Carboxylate and 42.5g deionized water. The mixture was heated to 195°F with stirring under a nitrogen atmosphere, and a mixture containing 385 g hydrated lime (94% calcium hydroxide), 231 g hydrocarbon oil, 96.25 g isodecyl alcohol and 57.75 g was added at a rate of 3.42 g / min over 3 hours and 45 minutes. Slurry of butyl carbitol. Five minutes after the slurry addition, carbon dioxide was added to the reaction at a rate of 1.2 scf / hr. During carbonation, the temperature was maintained at 195-200°F as in Example 1, and the pH was monitored.

[0083]After the s...

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Abstract

Powdered overbased amorphous alkaline earth salts are made which consist essentially of isolated solid agglomerated micelles of amorphous alkaline earth metal salts complexed with an amorphous alkaline earth metal carboxylate of a fatty acid. The process for making the powder involves precipitating and isolating the solid particles from liquid overbased alkaline earth metal compositions.

Description

[0001] related application [0002] This application is a continuation-in-part of US Patent Application Serial No. 09 / 861,393, filed May 18,2001. The entire disclosure of this application is hereby incorporated by reference. technical field [0003] The invention relates to a powdery overbasic amorphous fatty acid alkaline earth metal salt and a preparation method thereof. Overbased powders are used in a variety of applications including polymer stabilizers, lubricants, catalysts, oil well compositions, animal nutrition and cosmetics. Background technique [0004] The preparation of overbased calcium or barium salts of carboxylic acids, alkylphenols, and sulfonic acids is disclosed in the following U.S. Patents: 2,616,904; 2,760,970; 2,767,164; 2,798,852; The use of these overbased metal salts in halogen-containing organic polymers is disclosed in the following US Patents: 4,159,973; 4,252,698 and 3,194,823. The use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/41C07C53/126C07C57/03C07C57/12C08K3/24C08K5/00C08K5/098C08K5/138C08L27/00C10M159/20
CPCC07C51/412C07C51/414C07C57/12C08K3/24C08K5/0091C08K5/098C10M159/20C10M2207/26C10N2030/04C10N2010/04C10N2030/06C10N2070/00C08L57/08C08K5/138
Inventor 切斯特·E.·雷米詹姆斯·E.·雷迪
Owner OMG AMERICAS INC
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