Novel lignin based composition

a technology of lignin and composition, applied in the direction of lubricant composition, base material, additive, etc., can solve the problems of allowing lignin to be easily melted and/or blended into lubricant products, and achieve the effects of enhancing mud stability/integrity, improving and synergistic performance, and highly effective rheology control agen

Inactive Publication Date: 2013-12-19
KING JAMES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]In yet another embodiment of the present invention, Lignin Derivatives may be micronized so it may further enhance the emulsion stability, e.g. through air / jet milling or through the use of supercritical fluids, e.g. the RESS process (Rapid Expansion of Supercritical Solutions), the SAS method (Supercritical Anti-Solvent), or the PGSS method (Particles from Gas Saturated Solutions), or any other methods that are intended to reduce and particle sizes of Lignin Derivatives.
[0013]In accordance with one aspect of the present invention, the lubrication composition formulated as described above provides a stable dispersed system in the form of oil, gel, grease, paste, or solid, whereupon the Lignin Derivatives function as a multifunctional additive exhibiting significantly improved and synergistic performance such as antioxidancy, extreme pressure, antiwear, or lubricity properties that are of great values as heavy duty and environmentally friendly lubricants or greases to replace those formulated with traditional EP / AW additives such as Molybdenum disulfide, graphite, Molybdenum additives such as MOLYVAN A or L of R. T. Vanderbilt, or other S / P additives.
[0014]In yet another embodiment, according to the disclosures of the present invention, the Lignin Derivatives was shown surprisingly as a highly effective rheology control agent to control structural and / or viscosity enhancements / adjustments to the lubricant composition as disclosed in the examples of the present invention, which are particularly useful for grease and metal working applications as well as for oil field drilling fluid application, for instance, to prevent fluid loss or to enhance mud stability / integrity.

Problems solved by technology

(Wood Sci. Technol. 19: 139-149 (1985) that do not allow them to be easily melted and / or blended into lubricant products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

The Preparation of Grease from Lignin Examples 1-3

[0029]Lignin Examples 1-3 (1-25% parts by weight) with a particle size of −0 micron was mixed at ambient temperature with calcium 12-hydroxystearate soap grease (NLGI grade of 2) until homogeneous. The resulting grease samples exhibit higher grease consistency as the dosages increase (for details, see Table 2). Lignin 3 at a reduced particle size of 2 um is able to thicken the grease at a reduced dosage of 4%. The grease with 10% Lignin Example 1 was found to exhibit higher than 300 kg Four-Ball EP weld load as compared to 160 kg of the base grease.

example 2

The Preparation of Grease from Lignin Example 3

[0030]Lignin Example 1 (20-40 um) and was mixed at 4 wt % at ambient temperature with calcium sulfonate grease (NLGI grade of 2) until homogeneous. The resulting grease sample is a gel, of NLGI grade of 000 or less, with excellent fluidity. Four-Ball weld load was unchanged from the sulfonate base grease.

example 3

The Preparation of Stable Water Based Emulsion from Lignin 4

[0031]Lignin Example 4 with particle size of <100 microns was charged to a mixture of alkylbenzene oil (10 cSt with aniline point of 60 C), sodium alkylbenzene sulfonate, alkyl phenol ethoxylates, and butyl or methyl cellulose, and heated to 60 C whereupon the mixture thicken and form a stable emulsion concentrate that can be further diluted with water

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Abstract

A novel and environmentally friendly lignin based lubricant composition in the form of oil, gel, grease, paste, solid, or water / glycol emulsion comprising lignin and / or its derivatives with a dosage ranging from 0.01 to 95 wt %, preferably 0.1% to 80 wt %, or even more preferably 0.5 to 60 wt % dispersed in at least one or more components selected from 1) base oils, 2) surfactants or coupling agents, 3) lubricant additives, or 4) grease thickeners of soap or non-soap type whereupon the said composition was found to exhibit novel and synergistic performance benefits such as, but not limited to, antioxidancy, extreme pressure, antiwear, lubricity as well as a rheology modifying characteristics, e.g. thickening effect, for a broad range of lubricant, grease, or oil field drilling applications.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation in-part of Ser. No. 61 / 328,873, Filed on Apr. 28, 2010 and titled “Lignin Derivatives for lubricant and grease applications” and Ser. No. 61 / 533,227, filed on Sep. 11, 2011, titled “Lignin based grease improvements”.BACKGROUND[0002]Lignin is the main structural component of the plant and is nature's most abundant organic polymers with varying content of aromatic / Phenolic / ether functionalities. Lignin is isolated as the by-products in the traditional paper pulping industry as well as from biomass conversion technologies or solvent pulping process and through which lignin is physically modified or chemically derivativized into sulfonates (e.g. Sulfite process), thio-lignin (Kraft process), or sulfur-free lignins (e.g. Soda process). For a comprehensive review on the commercial processes in isolating / modifying lignin, see J. Polymer and the environment, vol. 10, nos. 1-2, April 2002, page 39-48. The use of ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10M159/02
CPCC10M159/02C10M173/00C10M173/02C10M107/30C10M109/00C10M2201/041C10M2201/066C10M2201/1036C10M2201/1056C10M2205/22C10M2207/1203C10M2207/1256C10M2207/1285C10M2209/1045C10M2209/1055C10M2209/108C10M2209/109C10M2209/12C10M2209/123C10M2213/0626C10M2215/1026C10M2219/024C10M2219/044C10N2020/06C10N2010/02C10N2030/64C10N2030/06C10N2010/04C10N2040/24C10N2040/243C10N2050/08C10N2070/02C10N2050/10
Inventor KING, JAMESWEI, LIWEN
Owner KING JAMES
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