Improvement in quality control of a functional fluid

A functional fluid and fluid technology, applied in the field of functional fluid quality control, can solve problems such as functional fluid quality control, and achieve the effect of simple and cheap quality control

Inactive Publication Date: 2009-08-19
EVONIK OIL ADDITIVES GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The document does not mention the quality control of functional fluids

Method used

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  • Improvement in quality control of a functional fluid
  • Improvement in quality control of a functional fluid
  • Improvement in quality control of a functional fluid

Examples

Experimental program
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Effect test

Embodiment 1

[0137] Metal ion concentration measurement

[0138] Nickel stearate powder was mixed at a concentration of 0.5% by weight in 100N oil at 60° C. for 3 hours. The resulting solution was added to the polyalkylmethacrylate-based PPD at different treat rates to achieve the nickel ion concentrations shown in Table I in each sample. The samples were then subjected to X-ray fluorescence spectroscopy (XRF) to measure the concentration of metal ions. The measured metal ion concentrations matched well with the calculated input concentrations (Table I).

[0139] Table I: Comparison of Calculated Input Nickel Concentrations with Measured Values

[0140] sample Calculated Ni content (ppm) Experimental Ni content (ppm) 1 47 44 2 23 27 3 471 458

Embodiment 2

[0142] Properties of functional fluids being tracked

[0143] The presence of organometallic tracers did not adversely affect the performance of additives such as pour point depressants. In the 5W-30 engine oil formulation, low temperature properties such as MRV / TP-1 viscosity, scanning Brookfield viscosity and gel index remained within the same range regardless of the presence of the nickel-based tracer. The low temperature performance results are shown in Table II.

[0144] Table II: Performance Comparison with Nickel Stearate in SAE5W-30 Formulations

[0145] Blend# 0 1 2 3 W / O Nickel stearate Nickel stearate Nickel stearate Treatment rate, wt% --- 0.0001 0.0002 0.0003 TP-1, at -35°C Viscosity, P 232 233 232 234 Yield stress, Pa 0 0 0 0 SBT ℃, at 30,000cP -32.13 -31.86 -31.85 -31.75 gel index -33.8 / 6.8 -33.3 / 7.5 -33.2 / 7.6 -32.2 / 7.2 cP, at -25°C ...

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Abstract

The present invention describes use of use of a metal compound to control the quality of a functional fluid. Additionally, the present invention concerns a method for controlling the quality of a functional fluid comprising the steps of: adding a metal compound to a component of a lubricant; mixing the component with a base oil; measuring the concentration of the metal compound in the functional fluid; and comparing the expected concentration of the metal compound with the measured concentration.

Description

Background technique [0001] The invention relates to an improvement in the quality control of functional fluids and a method for controlling the quality of functional fluids. [0002] The production of functional fluids such as hydraulic fluids or lubricants is a well known process. Typically, different components, such as base fluids, and additives, such as viscosity index improvers (VI), pour point depressants (PPD), detergent / inhibitor components (DI), are mixed to obtain functional fluids. However, errors can sometimes occur and thus the quality of the final product must be controlled in addition to the quality control of each compound used to produce the functional fluid. Usually, this control is performed by complex and expensive methods. [0003] The use of tracers for evaluating well drilling is disclosed in FR 2617180 . Tracers are used to track the outcome of a good well drilling rather than the quality of the drilling fluid. This document is silent on quality co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M129/38C10M159/18C10M161/00C10M165/00C10N10/02C10N10/04C10N10/06C10N10/08C10N10/10C10N10/14C10N10/16
CPCC10N2210/02C10N2210/05C10M2227/065C10M161/00C10N2210/01C10N2210/03C10N2230/00C10M129/38C10M159/18C10N2210/04C10M2209/084C10N2210/08C10N2240/08C10N2210/07C10M2207/126C10M2201/06C10M2227/09C10M165/00Y10T436/13C10N2010/10C10N2010/14C10N2010/06C10N2010/08C10N2030/00C10N2010/02C10N2010/04C10N2040/08C10M125/12C10M119/12C10N2030/02
Inventor B·金克王仁隆J·所席克
Owner EVONIK OIL ADDITIVES GMBH
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