Lubricating greases containing lignosulfonate, the production thereof, and the use thereof

A technology of lignosulfonate and calcium lignosulfonate, which can be used in lubricating compositions, petroleum industry, additives, etc., and can solve the problems of huge cost factors and consumption of synthetic chemicals

Active Publication Date: 2012-11-07
FUCHS PETROLUB SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, most commonly used antiwear additives and lubricity additives for reducing the coefficient of friction require expensive synthetic chemicals and are therefore a significant cost factor

Method used

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  • Lubricating greases containing lignosulfonate, the production thereof, and the use thereof
  • Lubricating greases containing lignosulfonate, the production thereof, and the use thereof
  • Lubricating greases containing lignosulfonate, the production thereof, and the use thereof

Examples

Experimental program
Comparison scheme
Effect test

example A（ comparative example ）

[0076] In the reactor, 958 g tallow fatty acid, 958 g tallow, 985 g calcium acetate, 27.7 g trisodium phosphate, 27.7 g calcium borate and 358 g calcium hydroxide were placed in 12000 g base oil mixture and 150 ml water was added. With stirring, the batch was heated to 198° C. with a defined temperature program, and the added water and the water of reaction evaporated there. In the cooling phase, additives are added to the batch at specific temperatures (see table). After adjusting the furnish to the desired consistency by adding 3700 g of the base oil mixture, the final product was homogenized by means of a toothed colloid mill. The grease thus obtained is suitable, for example, as constant velocity joint shaft grease.

example B

[0078] In the reactor, put 460g tallow fatty acid, 445g tallow, 460g calcium acetate, 27.7g trisodium phosphate, 27.7g calcium borate, 168g calcium hydroxide and 920g calcium lignosulfonate (manufactured by Borregard Lignotech) in 14000g base oil mixture Norlig 11D powder), and add 150ml of water. With stirring, the batch was heated to 208° C. with a defined temperature program, and the added water and the water of reaction evaporated there. During the cooling phase, at specific temperatures, additives are added to the batch (see table). After adjusting the furnish to the desired consistency by adding 3450 g of the base oil mixture, the final product was homogenized by means of a toothed colloid mill. The grease thus obtained is suitable, for example, as constant velocity joint shaft grease.

example C（ comparative example ）

[0080] In the reactor, 800 g of 12-hydroxystearic acid, 288 g of sebacic acid, 388 g of calcium acetate and 157.3 g of calcium hydroxide were placed in 5000 g of the base oil mixture. 64g of LiOH×H 2 O was dissolved in 250ml water and added. With stirring, the batch was heated to 200° C. with a defined temperature program, and the added water and the water of reaction evaporated there. In the cooling phase, at a specific temperature, additives are added to the batch.

[0081] After adjusting the furnish to the desired consistency by adding 3116 g of the base oil mixture, the final product was homogenized by means of a toothed colloid mill. The grease thus obtained is suitable, for example, as rolling bearing grease.

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Abstract

The invention relates to lubricating greases that contain calcium lignosulfonate, comprising a base oil, calcium soaps, calcium lignosulfonate having average molecular weights (weight average) of greater than 10000 g / mol, optionally in addition to further alkaline earth lingosulfonates, which can be produced by heating to greater than 120 DEG C while reacting and while driving out low-boiling components to produce a basic grease and cooling and adding base oil and optionally additives while mixing, to a corresponding method, and to the use of the lubricating greases containing calcium lignosulfonate.

Description

technical field [0001] The present invention relates to a method for the manufacture of lubricating greases containing calcium lignosulfonate, such lubricating greases and their use. Background technique [0002] Lignin is a complex polymer based on phenylpropane units which are cross-linked with each other by means of the energy band widths of different chemical bonds. Lignin occurs in plant cells along with cellulose and hemicellulose. Lignin itself is a crosslinked polymer having an average molar mass of, for example, more than 10 000 g / mol (weight average). [0003] Basically, three types of monolignol monomers that differ in the degree of methoxylation can be identified as the monomeric components of lignin. The monolignol monomers are p-coumaryl alcohol, coniferyl alcohol and sinapyl alcohol. The lignin alcohol is embedded in the lignin structure in the form of hydroxyphenyl units (H), guaiacyl units (G) and syringyl units (S). Plants with bare seeds (gymnosperms) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M135/10C10M141/08C10M159/24C10N40/02C10N30/02C10N30/06C10N30/12C10N10/02C10N10/04C10N50/10
CPCC10N2230/26C10M2207/127C10N2210/02C10N2230/12C10N2210/01C10M159/24C10N2230/36C10M135/10C10M141/08C10N2230/02C10N2230/06C10M2201/041C10N2240/02C10M2201/066C10N2250/10C10N2010/02C10N2010/04C10N2030/02C10N2030/06C10N2030/12C10N2040/02C10N2050/10C10N2030/26C10N2030/36
Inventor 托马斯·利特斯亚历山大·利伯瑙
Owner FUCHS PETROLUB SE
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