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Mineral-oil-free lubricant and method for producing a mineral-oil-free lubricant

A technology for lubricants and mixtures, which can be used in lubricating compositions, additives, petroleum industry, etc., and can solve problems such as the inability to achieve complete biodegradability

Active Publication Date: 2021-09-07
KAJO GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, complete biodegradability according to OECD-301 cannot be achieved for the lubricant described in WO 2004 / 106474 A1 due to the non-low proportion of mineral oil

Method used

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  • Mineral-oil-free lubricant and method for producing a mineral-oil-free lubricant
  • Mineral-oil-free lubricant and method for producing a mineral-oil-free lubricant
  • Mineral-oil-free lubricant and method for producing a mineral-oil-free lubricant

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0046] 284g of benzenesulfonic acid C10-18 alkyl derivatives were dissolved in 500g of bis(2-ethylhexyl) sebacate (V40: 10mm 2 / s). Then 10 g of calcium hydroxide were added and stirred at 50° C. for 30 min. Then add 133g calcium oxide and 115g Ca(OH) 2 , and the mixture was homogenized by further stirring. The temperature was then raised to 60°C. 110 ml of water were then added, and carbon dioxide was led through the mixture. The mixture has a TBN of 367 mg KOH / g. Subsequently 300 g of bis(2-ethylhexyl) sebacate, 200 g of a C10-18 alkyl derivative of benzenesulfonic acid and 120 g of water were added to the product. The product was heated to 99°C. After successful conversion of calcium carbonate from the vaterite form to the calcite form, the product was dehydrated at 110°C. TBN is now 162 mg KOH / g. The product was then heated to 160°C and held at this temperature for one hour. After cooling, the grease had a consistency (according to ASTM D217) of 331 mm / 10 after 60...

example 2

[0048] Dissolve 280g of benzenesulfonic acid C10-14 alkyl derivative in 700g of complex ester (fatty acid, C18 unsaturated, dimerization, polymer containing 2-ethylhexanol and neopentyl glycol) (V40: 110.5mm 2 / s). Then 11 g of calcium hydroxide were added and stirred at 50° C. for 45 minutes. Then add 151g calcium oxide and 151g Ca(OH) 2 , and the mixture was homogenized by further stirring. The temperature was then raised to 82°C. 130 g of water were then added, and carbon dioxide was led through the mixture. The mixture has a TBN of 399 mg KOH / g. 300 g of complex esters (fatty acid, C18 unsaturated, dimerized, polymer containing 2-ethylhexanol and neopentyl glycol), 220 g of C10-14 alkylbenzenesulfonic acid, 21 g of acetic acid, 72 g of Ca(OH) were then added to the product ) 2 and 180g of water. The product was heated to 92°C. After successful conversion of calcium carbonate from the vaterite form to the calcite form, the product was dehydrated at 110°C. TBN is no...

example 3

[0050] Dissolve 280g of benzenesulfonic acid C10-14 alkyl derivatives in 500g of neopentyl glycol diisostearate (saturated ester) (V40: 48mm 2 / s). Then 11 g of calcium hydroxide were added and stirred at 50° C. for 45 minutes. Then add 151g calcium oxide and 131g Ca(OH) 2 , and the mixture was homogenized by further stirring. The temperature was then raised to 62°C. 130 ml of water were then added, and carbon dioxide was led through the mixture. The mixture has a TBN of 369 mg KOH / g. 300 g neopentyl glycol diisostearate (saturated ester), 243 g C10-14 alkylbenzenesulfonic acid, 21 g acetic acid, 72 g Ca(OH) were then added to the product 2 and 65g of water. The product was heated to 92°C. After successful conversion of calcium carbonate from the vaterite form to the calcite form, the product was dehydrated at 110°C. TBN is now 188 mg KOH / g. The product was then heated to 160°C and held at this temperature for one hour. After cooling, the grease had a consistency of ...

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Abstract

The invention relates to a method for producing a lubricant, in which, first, an overbased calcium sulfonate is created or provided, this is then transformed from the vaterite to the calcite form and, finally, a calcium sulfonate grease is produced by heating the mixture. The invention further relates to a lubricant produced by this method and to a lubricant that comprises at least one ester composition, calcium carbonate and at least one overbased alkylbenzene sulfonate. According to the invention, the basicity of the mixture is limited to a TBN of at most 550 mg KOH / g during the synthesis of the overbased calcium sulfonate and to a TBN of at most 450 mg KOH / g during the transformation of the calcium sulfonate. The method according to the invention is characterized more particularly in that both the calcium sulfonate and grease containing same are produced only on an ester basis, and therefore the end product contains no mineral oil at all and is thus easily and completely biologically degradable.

Description

technical field [0001] The present invention relates to a process for the manufacture of lubricants, wherein an overbased calcium sulfonate is first produced or supplied, this overbased calcium sulfonate is subsequently converted from the vaterite form to the calcite form, and finally the sulfonate is produced by heating the mixture. Calcium acid fat. The invention also relates to a lubricant produced according to said method, and a lubricant comprising at least one combination of ester components, calcium carbonate and at least one overbased alkylbenzene sulfonate. Background technique [0002] Lubricants or lubricating materials are used to reduce friction and wear, absorb vibrations, seal, and serve as corrosion protection for tools, machinery, motors, and motor vehicles, aircraft, ships, and parts thereof. Among them, a distinction is made between liquid (lubricating oil), pasty (grease) and solid (solid lubricating material such as graphite) lubricants. Greases genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M159/24C10N10/04C10N20/02C10N50/10C10N70/00
CPCC10M159/24C10M2219/046C10M2207/2805C10M2201/062C10M2207/2825C10M2207/301C10M2207/2835C10M2207/401C10N2020/02C10N2030/52C10N2030/66C10N2030/64C10N2070/00C10N2050/10C10N2010/02C10N2010/04C10N2030/40C10M105/34C10M105/36C10M105/38C10M125/10C10M135/10C10M2207/2815
Inventor F·邦加特M·约翰
Owner KAJO GMBH