CN113075157A - Determination method and application of polyether amine compound in detergent-containing vehicle gasoline - Google Patents
Determination method and application of polyether amine compound in detergent-containing vehicle gasoline Download PDFInfo
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- 239000003599 detergent Substances 0.000 title claims abstract description 53
- 239000004721 Polyphenylene oxide Substances 0.000 title claims abstract description 38
- 229920000570 polyether Polymers 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 18
- -1 amine compound Chemical class 0.000 title claims abstract description 13
- 238000002835 absorbance Methods 0.000 claims abstract description 18
- 238000001704 evaporation Methods 0.000 claims abstract description 18
- 230000008020 evaporation Effects 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000002329 infrared spectrum Methods 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 238000004566 IR spectroscopy Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- 238000011282 treatment Methods 0.000 claims abstract description 3
- 150000001412 amines Chemical class 0.000 claims description 27
- 238000012360 testing method Methods 0.000 claims description 18
- 150000001875 compounds Chemical class 0.000 claims description 12
- 238000001228 spectrum Methods 0.000 claims description 8
- 238000011088 calibration curve Methods 0.000 claims description 5
- 229920002367 Polyisobutene Polymers 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000003556 assay Methods 0.000 claims 8
- 229920001083 polybutene Polymers 0.000 claims 1
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 4
- 239000002199 base oil Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 241000899793 Hypsophrys nicaraguensis Species 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RREANTFLPGEWEN-MBLPBCRHSA-N 7-[4-[[(3z)-3-[4-amino-5-[(3,4,5-trimethoxyphenyl)methyl]pyrimidin-2-yl]imino-5-fluoro-2-oxoindol-1-yl]methyl]piperazin-1-yl]-1-cyclopropyl-6-fluoro-4-oxoquinoline-3-carboxylic acid Chemical compound COC1=C(OC)C(OC)=CC(CC=2C(=NC(\N=C/3C4=CC(F)=CC=C4N(CN4CCN(CC4)C=4C(=CC=5C(=O)C(C(O)=O)=CN(C=5C=4)C4CC4)F)C\3=O)=NC=2)N)=C1 RREANTFLPGEWEN-MBLPBCRHSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000013556 antirust agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000002816 fuel additive Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012421 spiking Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
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- Spectroscopy & Molecular Physics (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to a determination method and application of a polyether amine compound in detergent-containing motor gasoline. The method comprises the following specific steps: putting a sample in a sample container, carrying out evaporation treatment, cooling, washing the sample container, taking the washed solution as a measurement sample, and measuring by utilizing infrared spectroscopy; and measuring the absorbance value of the characteristic band of the sample according to the spectrogram, and obtaining the mass fraction of the polyether amine compound in the sample according to the absorbance value. The evaporation temperature is 65-75 ℃, and the evaporation time is 1.2-1.8 h. The quantitative peak of infrared spectrum detection is 1110-1111cm‑1。
Description
Technical Field
The invention belongs to the technical field of detection of gasoline detergents, and particularly relates to a method for determining a polyetheramine compound in detergent-containing motor gasoline and application of the polyetheramine compound.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The gasoline detergent is used as an efficient and environment-friendly fuel additive, and plays a positive role in preventing and removing carbon deposit of an engine, reducing tail gas emission, improving fuel economy and the like. Most of the existing gasoline detergents for automobiles are amine detergents, which mainly comprise main agents of polyisobutylene amine, polyether amine, polyisobutylene phenol Mannich base and carrier oil (mineral oil, polyolefin or polyether synthetic oil), and also comprise other additives such as an antioxidant, an anti-emulsifier, an antirust agent, an anti-wear agent and the like. The main agent is used as the effective component of the automobile gasoline detergent and plays a decisive role in the cleaning performance of the automobile gasoline detergent.
The quality of fuel oil products sold in the current market is uneven, the content of some effective components is extremely low, some effective components even do not contain the effective components, most of the fuel oil products are carrier oil, the carrier oil is not good, the cleaning effect is not achieved, some of the fuel oil products even cause damage to automobile pipelines and aggravated exhaust emission, and at present, detection and analysis are not carried out on main agents of detergents in China, and the correlation between the main agent components and the cleaning performance is established.
The national standard stipulates technical indexes for evaluating the cleaning effect of the gasoline detergent for the vehicle, but the qualitative and quantitative analysis of the effective components in the gasoline detergent for the vehicle cannot be carried out. The inventors have found that, in addition to polyetheramine detergents, the remaining classes of detergents are temporarily not amenable to quantitative analysis using infrared light.
Disclosure of Invention
In view of the problems in the prior art, the invention aims to provide a method for measuring a polyether amine compound in detergent-containing motor gasoline and application thereof. By utilizing the infrared spectroscopy, the corresponding conditions required by the infrared spectroscopy test are obtained, and the method for measuring the content of the polyether amine detergent in the motor gasoline is established.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the method for measuring the polyether amine compound in the detergent-containing motor gasoline comprises the following specific steps:
putting a sample in a sample container, carrying out evaporation treatment, cooling, washing the sample container, taking the washed solution as a measurement sample, and measuring by utilizing infrared spectroscopy;
and measuring the absorbance value of the characteristic band of the sample according to the spectrogram, and obtaining the mass fraction of the polyether amine compound in the sample according to the absorbance value.
In some embodiments of the invention, the evaporation temperature is 65-75 ℃ and the evaporation time is 1.2-1.8 h; preferably, the evaporation temperature is 70 ℃ and the evaporation time is 1.5 h. During the infrared spectroscopy measurements, the main interference peak was found to be 1087.0cm, which is characteristic of the methyl tert-butyl ether (MTBE) component, which boils at 55.2 ℃ and therefore the evaporation temperature should be above 55.2 ℃, but too high a temperature could lead to loss of gasoline detergent component. It was confirmed through a large number of experiments that most of the interfering components were removed after 1.5 hours of evaporation of gasoline at an evaporation temperature of 70 ℃ and an air flow rate of 1000 (mL/s).
In some embodiments of the invention, the air flow rate is 900-1100 mL/s; preferably 1000 mL/s.
In some embodiments of the invention, the quantitative peak for the polyetheramine compound is 1110.6cm-1、1110.94cm-1. At 1110cm-1，1247cm-1And 1511cm-1The characteristic peak exists nearby, and 1247.2cm is found by scanning the mid-infrared spectrum-1And 1511.0cm-1The intensity of characteristic absorption peak is low, and the characteristic absorption peak is not suitable to be used as quantitative peak of polyether amine compound, and finally the quantitative peak is selected to be 1110.6cm-1。1110.6cm-1、1110.94cm-1The quantitative peaks in the vicinity are also within the scope of the present invention.
In some embodiments of the inventionIn an embodiment, the infrared spectrometer: wavelength range of 650cm-1～4000cm-1Spectral resolution of 2cm-1The interval of the spectrum collection data points is 0.5cm-1The number of scanning times is not less than 32.
In some embodiments of the invention, the absorbance Y is related to the mass fraction of polyetheramine by: y ═ ac + b;
mass fraction (%) of polyetheramine detergent;
a, the slope of a regression curve of the polyether amine detergent;
and b, polyether amine detergent regression curve intercept.
In some embodiments of the invention, the absorbance Y is related to the mass fraction of polyetheramine by:
mass fraction (%) of polyetheramine detergent;
a, the slope of a regression curve of the polyether amine detergent;
b, polyether amine detergent regression curve intercept;
s is the fold increase of the test specimen. In the case of increasing the amount of sample, the obtained mass fraction may be divided by the increase factor.
In some embodiments of the invention, quantitative calibration curves are established for different amounts and different absorbances.
In a second aspect, the above determination method is applied to detection of the polyetheramine compound in the gasoline detergent.
Preferably, the polyetheramine compounds are polybutyleneamine, polyetheramine, and polyisobutylene phenol mannich bases.
One or more technical schemes of the invention have the following beneficial effects:
the recognition and content determination of the polyether amine detergent in the gasoline are realized, and the problem that the polyether amine detergent cannot be quantitatively analyzed by utilizing infrared spectrum is solved. The detection method has good accuracy and stability, and the standard deviation of different samples is small. The method has good repeatability, and the relative standard deviation is 0.17-0.22% after the method is repeated for 8 times. The recovery rate of the test method to the sample is higher, and the recovery rate of the added standard is between 97.3% and 102.8%.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is an IR spectrum of a mogas solution containing varying concentrations of a polyetheramine detergent;
FIG. 2 is a standard infrared spectrum of a polyetheramine compound;
FIG. 3 is a mid-infrared scan of a polyetheramine detergent;
FIG. 4 is a mid-infrared scanning spectrum of a polyetheramine detergent interfering peak;
FIG. 5 is a calibration curve for a mogas solution containing varying concentrations of a polyetheramine detergent;
FIG. 6 is a repeated IR spectrum of a gasoline sample of 0.1238% polyetheramine;
FIG. 7 is a repeated IR spectrum of a gasoline sample of 0.1998% polyetheramine;
FIG. 8 is a repeated IR spectrum of a gasoline sample of 0.0887% polyetheramine.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The instrument comprises the following steps: fourier transform infrared spectrometer: the selected infrared spectrometer meets the GB/T21186 requirement, and the effective wave number measurement range of the spectrum is not less than 650cm-1～4000cm-1Spectral resolution better than 2cm-1(containing 2 cm)-1) The signal-to-noise ratio is better than 10000: 1, the accuracy of the wavelength is better than 0.01cm-1The data acquisition interval is better than 0.5cm-1(containing 0.5 cm)-1)。
A sample cell: the optical path of the anti-interference transmission type sample cell is 0.1 mm. In order to prevent the window material of the sample cell from deliquescing to influence the transmittance, the window material adopted by the sample cell is ZnSe crystal; in order to obtain a good signal-to-noise ratio and a stable spectrum baseline, the sample cell should not generate interference fringes, and an anti-interference sample cell with a wedge-shaped structure can be adopted. Other window materials may be used, such as KBr, CaF2Etc., but care should be taken that the transparency of the glazing material is affected by moisture. Manual or automatic sample introduction can be carried out, and no air bubbles exist in the sample pool during measurement.
Fuel gum content tester: the equipment precision is +/-0.1 ℃, the range is 40-200 ℃, and the flow rate is 1000(mL/s) +/-150 (mL/s).
The invention will be further illustrated by the following examples
Example 1
50mL of the sample is placed in a fuel gum content tester, the sample is evaporated for 1.5h under the conditions of the evaporation temperature of 70 ℃ and the air flow rate of 1000(mL/s) (normal temperature and normal pressure), the sample is taken out after cooling, the beaker is washed clean by using an n-heptane solution, and the solution after washing is moved to a 10mL volumetric flask and is subjected to volume fixing by using n-heptane to serve as a measurement sample. If the absorbance of the absorption band of the quantitative characteristic peak is less than 0.45, the amount of the sample can be increased appropriately.
Spectral measurement, wherein the measurement mode of the instrument spectral measurement is set as absorption spectrum, and the wavelength range is 650cm-1～4000cm-1Spectral resolution of 2cm-1The interval of the spectrum collection data points is 0.5cm-1To obtain a good signal-to-noise ratio, it is recommended that the number of scans of the spectrum is not less than 32. Placing into a sample cell, and measuring the back of the spectrum with n-heptane as referenceAnd (4) scene signals. The measurement sample is poured into the sample cell and the absorption spectrum of the sample is measured, ensuring that the sample cell is filled and no air bubbles are present.
The mass fraction of the polyether amine in a sample can be obtained by measuring the absorbance value Y of quantitative characteristic bands of the polyether amine detergents with different contents, and the specific calculation formula is as follows: y ═ ac + b;
mass fraction (%) of polyetheramine detergent;
a, the slope of a regression curve of the polyether amine detergent;
and b, polyether amine detergent regression curve intercept.
Example 2
In contrast to example 1, the absorbance Y is related to the mass fraction of polyetheramine by the formula:
mass fraction (%) of polyetheramine detergent;
a, the slope of a regression curve of the polyether amine detergent;
b, polyether amine detergent regression curve intercept;
s is the fold increase of the test specimen.
In a 25mL volumetric flask, the standard substances were accurately weighed in accordance with the content ranges of table 1 using n-heptane as a diluting solvent, to prepare calibration samples shown in table 1.
TABLE 1 calibration sample configuration Table
| Serial number | Additive material | Calibration curve mass fraction/%) |
| 1 | Polyetheramine detergent | 0.1000，0.1250，0.1650，0.2000，0.3300 |
Can be seen at 1110.94cm-1The infrared spectrum of the compound is obviously different from that of the automotive gasoline (blank spectral line) per se. The absorbance of each calibration sample is shown in table 2.
TABLE 2 gasolines containing varying concentrations of polyetheramine detergents 1110.94cm in solution-1Absorbance of (b) of
| Standard sample concentration/%) | 0 | 0.0999 | 0.1248 | 0.1664 | 0.1996 | 0.3322 |
| Absorbance of the solution | 0.125 | 0.457 | 0.544 | 0.623 | 0.796 | 1.228 |
The IR spectrum obtained by the values of Table 2 is shown in FIG. 1, and the calibration curve is shown in FIG. 5.
Test example 1
Selection of characteristic peaks
The reference of the relevant documents shows that the standard infrared spectrum of the polyetheramine compound is shown in fig. 2, and as can be seen from fig. 2, the polyetheramine compound comprises: 1110cm-1，1247cm-1And 1511cm-1In order to verify the position of the polyetheramine compound, the polyetheramine detergent is subjected to mid-infrared scanning, and the spectrogram is shown in fig. 3. Considering that the characteristic peaks of some substances possibly existing in the motor gasoline interfere with the characteristic peaks of the polyether amine compound, the motor gasoline is subjected to mid-infrared scanning, and the spectrogram is shown in fig. 4. As can be seen from FIGS. 3 and 4, the distance is 1247.2cm-1And 1511.0cm-1The absorption peak intensity is low, and the absorption peak is not suitable for being used as a quantitative peak of the polyether amine compound. While figure 4 shows that the gasoline for the automobile is 1087.0cm-1Has strong absorption peak at the position of 1110.6cm-1The characteristic peaks produce interference. Through a large number of experiments, 1087.0cm can be effectively removed by controlling the evaporation temperature-1The influence of absorption peaks.
Test example 2
Polyether amine detergents produced by 6 different manufacturers are collected from the market, and the detection results are shown in table 3 after detection according to a determined method.
TABLE 3 data sheet for determining the content of polyetheramine in different laboratories
As can be seen from Table 3, the relative standard deviation of the measured polyether amine detergents produced by 6 different manufacturers is below 0.30%, and the requirements of quantitative detection in laboratories are met.
Test example 3
The method repeatability tests were carried out using the motor gasoline containing 0.1238%, 0.1998%, 0.0887% of the polyetheramine compound as a sample, the IR spectrum is shown in fig. 6, 7 and 8, and the test results are shown in tables 4 to 6.
TABLE 4 repeatability test results for sample 1
TABLE 5 repeatability test results for sample 2
TABLE 6 repeatability test results for sample 3
From tables 3 to 5, it can be seen that the relative standard deviation of the repeatability of the samples is 0.17% -0.22%, and considering comprehensively, the relative deviation of the parallel samples is less than 0.3%, and the difference of the repeatability test cannot exceed 0.3%.
Test example 4
The Jinan, Qingdao, Weize, Weifang, Texas, Dongying and Dongying Qingdao mixed samples and the like are respectively selected to test the spiking recovery rate of the method, and the results are shown in Table 7.
TABLE 7 recovery and precision test results
As can be seen from Table 7, the recovery rates of the samples in all 10 different areas are 97.3% -102.8%, and the relative standard deviation of the parallel detection for 6 times is below 0.30%, which indicates that the method has good precision and meets the quantitative detection requirements of laboratories.
Test example 5
3 samples quantitatively added with the polyether amine detergent are selected and subjected to method verification tests in 3 laboratories, and the detection data are shown in table 8:
TABLE 8 data sheet for determining the content of polyetheramine in different laboratories
From the measured data, the relative standard deviation between 3 laboratories was 0.12% to 0.15%, and the relative deviation between parallel samples between laboratories was set to be less than 1.0% in consideration of the difference between laboratories.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The method for measuring the polyether amine compound in the detergent-containing automotive gasoline is characterized by comprising the following steps: the method comprises the following specific steps: putting a sample in a sample container, carrying out evaporation treatment, cooling, washing the sample container, taking the washed solution and the sample as measurement samples, and measuring by utilizing infrared spectroscopy;
and measuring the absorbance value of the characteristic band of the sample according to the spectrogram, and obtaining the mass fraction of the polyether amine compound in the sample according to the absorbance value.
2. The assay method according to claim 1, wherein: the evaporation temperature is 65-75 ℃, and the evaporation time is 1.2-1.8 h; preferably, the evaporation temperature is 70 ℃ and the evaporation time is 1.5 h.
3. The assay method according to claim 1, wherein: the air flow rate is 900-1100 mL/s; preferably 1000 mL/s.
4. The assay method according to claim 1, wherein: the quantitative peak of infrared spectrum detection is 1110.6cm-1、1110.94cm-1。
5. The assay method according to claim 1, wherein: an infrared spectrometer: wavelength range of 650cm-1～4000cm-1Spectral resolution of 2cm-1The interval of the spectrum collection data points is 0.5cm-1The number of scanning times is not less than 32.
6. The assay method according to claim 1, wherein: the relation between the absorbance Y and the mass fraction of the polyether amine is as follows: y ═ ac + b;
mass fraction (%) of polyetheramine detergent;
a, the slope of a regression curve of the polyether amine detergent;
and b, polyether amine detergent regression curve intercept.
7. The assay method according to claim 1, wherein: the relation between the absorbance Y and the mass fraction of the polyether amine is as follows:
mass fraction (%) of polyetheramine detergent;
a, the slope of a regression curve of the polyether amine detergent;
b, polyether amine detergent regression curve intercept;
s is the fold increase of the test specimen.
8. The assay method according to claim 1, wherein: and establishing quantitative calibration curves of different contents and different absorbances.
9. Use of the assay of any one of claims 1 to 8 in the detection of a polyetheramine compound in a gasoline detergent.
10. The use of claim 9, wherein: the polyether amine compound is polybutene amine, polyether amine and polyisobutene phenol Mannich base.
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| CN114280001A (en) * | 2021-12-07 | 2022-04-05 | 福建钟山化工有限公司 | Near-infrared rapid detection method for hydroxyl value of polyether polyol |
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| CN106645012A (en) * | 2016-12-19 | 2017-05-10 | 中国石油化工股份有限公司 | Method for carrying out rapid quantitative analysis on ester compounds in finished product gasoline and diesel |
| CN108645810A (en) * | 2018-04-03 | 2018-10-12 | 成都产品质量检验研究院有限责任公司 | The precious good and bad rapid detection method of polyisobutene amine fuel oil |
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| CN114280001A (en) * | 2021-12-07 | 2022-04-05 | 福建钟山化工有限公司 | Near-infrared rapid detection method for hydroxyl value of polyether polyol |
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