Supercharge Your Innovation With Domain-Expert AI Agents!

Method for detecting vinyl acetate in hot melt adhesive

A technology of vinyl acetate and detection method, applied in the field of analytical chemistry, to achieve the effect of simple sample pretreatment

Active Publication Date: 2014-12-10
CHINA TOBACCO YUNNAN IND
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a detection method for vinyl acetate in hot melt adhesives, which has the advantages of simple sample pretreatment, easy operation and quantitative Accurate and other advantages

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for detecting vinyl acetate in hot melt adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 0.2 g of the hot melt adhesive sample into the headspace vial, add 1 mL of triacetin as a matrix corrector, quickly seal it, analyze it by headspace-gas chromatography-mass spectrometry, and quantify it with the external standard method.

[0019] The headspace vial injection conditions are as follows:

[0020] The equilibrium temperature of the hot melt adhesive sample is 130 °C, the ring temperature is 150 °C, the transfer line temperature is 170 °C, the hot melt adhesive sample equilibration time is 30 min, the pressurization time is 0.2 min, the inflation time is 0.2 min, and the injection time is 1.0 min. min.

[0021] The gas chromatography conditions are as follows:

[0022] The chromatographic column is a VOC-specific capillary column or equivalent column, with a length of 60 m×inner diameter of 0.32 mm×film thickness of 1.8 μm; the carrier gas is helium (He); the temperature of the injection port is 170 °C; constant flow mode, column flow rate 1.0 mL / mi...

Embodiment 2

[0027] Weigh 0.3 g of the hot melt adhesive sample into the headspace vial, add 1 mL of triacetin as a matrix corrector, quickly seal it, analyze it by headspace-gas chromatography-mass spectrometry, and quantify it by the external standard method. The headspace vial injection conditions are as follows:

[0028] The equilibrium temperature of the hot melt adhesive sample is 110 °C, the ring temperature is 160 °C, the transfer line temperature is 165 °C, the hot melt adhesive sample equilibration time is 40 min, the pressurization time is 0.3 min, the inflation time is 0.3 min, and the injection time is 1.5 min. min.

[0029] The gas chromatography conditions are as follows:

[0030] The chromatographic column is a VOC-specific capillary column or equivalent column, with a length of 60 m×inner diameter of 0.32 mm×film thickness of 1.8 μm; the carrier gas is helium (He); the temperature of the injection port is 175°C; constant flow mode, column flow rate 1.5 mL / min, with a sp...

Embodiment 3

[0035] Weigh 0.4 g of hot melt adhesive sample into the headspace vial, add 2 mL of triacetin triacetate as a matrix corrector, quickly seal it, analyze it by headspace-gas chromatography-mass spectrometry, and quantify it with the external standard method. The headspace vial injection conditions are as follows:

[0036] The equilibrium temperature of the hot melt adhesive sample is 120 °C, the ring temperature is 145 °C, the transfer line temperature is 160 °C, the hot melt adhesive sample equilibration time is 50 min, the pressurization time is 0.4 min, the inflation time is 0.4 min, and the injection time is 2.0 min. min.

[0037] The gas chromatography conditions are as follows:

[0038] The chromatographic column is a VOC-specific capillary column or equivalent column, with a length of 60 m×inner diameter of 0.32 mm×film thickness of 1.8 μm; the carrier gas is helium (He); the temperature of the injection port is 180 ℃; the constant flow mode, the column flow rate is 2.0...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for specially detecting vinyl acetate in hot melt adhesive, belonging to the technical field of analytical chemistry. A headspace-gas chromatography-mass spectrum method is adopted to test the vinyl acetate in hot melt adhesive; the method for detecting vinyl acetate in hot melt adhesive comprises the steps of weighing 0.1-0.5g of hot melt adhesive samples in a headspace bottle, adding 1-3mL of matrix correcting agent-triacetin, sealing rapidly, analyzing by a headspace-gas chromatography-mass spectrum instrument and quantifying by an external standard method. The method is used for detecting the content of vinyl acetate in hot melt adhesive, and has the advantages of simplicity in sample pretreatment, convenience in operation, accuracy in quantification and the like.

Description

technical field [0001] The invention belongs to the technical field of analytical chemistry, and in particular relates to a method for detecting vinyl acetate in hot melt adhesives. Background technique [0002] Vinyl acetate is a colorless liquid with a sweet ethereal odor; slightly soluble in water, soluble in alcohol, acetone, benzene and chloroform. Vinyl acetate is flammable, and its vapor and air can form explosive mixtures; it is irritating to eyes, skin, mucous membranes and upper respiratory tract, and has an anesthetic effect if exposed for a long time. [0003] As one of the smoking materials, hot melt adhesives are used in cigarette filter rods and packaging boxes, and may have direct contact with consumers. Although the proportion of hot melt adhesive in the composition of cigarette materials is relatively small, considering that it may contain pollutant residues, and its use in the cigarette production process requires a heating process (130-160 ° C), it is ea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 张凤梅刘志华司晓喜朱瑞芝张涛申钦鹏刘春波王昆淼何沛杨光宇苏钟璧蒋次清
Owner CHINA TOBACCO YUNNAN IND
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com