Pressure-sensitive fingerprint adhesive and its prepn

A technology of pressure sensitivity and fingerprint, applied in the direction of adhesives, grafted polymer adhesives, adhesive types, etc., can solve the problem of high raw material cost, achieve the effect of reduced raw material cost and simple and reliable method

Inactive Publication Date: 2006-05-17
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a better color rendering effect, but the cost of raw materials is higher

Method used

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  • Pressure-sensitive fingerprint adhesive and its prepn
  • Pressure-sensitive fingerprint adhesive and its prepn

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] Prepare the viscous polymer with the following components (unit: gram)

[0028] Natural Rubber Emulsion 41.0

[0029] Acrylic 1.0

[0030] Vinyl acetate 10.0

[0031] Hydroxypropyl Acrylate 16.0

[0032] water 28.0

[0033] Potassium persulfate 0.01

[0034] Rosin modified resin 3.2

[0035] Sodium lauryl sulfate 0.1

[0036] Dodecyl Mercaptan 0.05

[0037] Preparation of modified natural rubber emulsion grafted with acrylic acid: in the water phase, add emulsifier sodium lauryl sulfate, under the trigger of potassium persulfate, under the regulation of dodecyl mercaptan, acrylic acid, vinyl acetate, Isooctyl acrylate was emulsion polymerized at 50° C. for 8 hours, and then added to the natural rubber emulsion to obtain a modified natural rubber emulsion grafted with acrylic acid. Add tackifier rosin modified resin to the modified natural rubber latex to prepare acrylic acid grafted modified natural rubber latex.

[0038] 546 grams of ninhydrin are dissolved in...

example 2

[0040] Prepare the viscous polymer with the following components (unit: gram)

[0041] Natural Rubber Emulsion 40.0

[0042] Acrylic 1.2

[0043] Vinyl acetate 6.0

[0044] Butyl acrylate 20.0

[0045] water 19.6

[0046] Potassium persulfate 0.45

[0047] Epoxy resin 6.4

[0048] Sodium lauryl sulfate 0.4

[0049] Dodecyl Mercaptan 0.2

[0050] Preparation of modified natural rubber emulsion grafted with acrylic acid: In the water phase, add emulsifier sodium lauryl sulfate, under the trigger of potassium persulfate, under the regulation of dodecyl mercaptan, acrylic acid, vinyl acetate, acrylic acid The butyl ester was emulsion polymerized at 65° C. for 2.5 hours, and then added to the natural rubber emulsion to obtain a modified natural rubber emulsion grafted with acrylic acid. In the modified natural rubber latex, tackifier rosin modified resin and epoxy resin are added to prepare the modified natural rubber latex grafted with acrylic acid.

[0051] Preparation o...

example 3

[0053] Prepare the viscous polymer with the following components (unit: gram)

[0054] Natural Rubber Emulsion 40.0

[0055] Acrylic 1.0

[0056] Vinyl acetate 7.0

[0057] Isooctyl acrylate 15.0

[0058] water 27.2

[0059] Ferrous sulfate 0.24

[0060] Epoxy resin 6.4

[0061] Sodium formylsulfonate 1.0

[0062] Dodecyl Mercaptan 0.2

[0063] Preparation of modified natural rubber emulsion grafted with acrylic acid: in the water phase, add emulsifier sodium formylsulfonate, under the trigger of potassium persulfate, under the regulation of dodecyl mercaptan, acrylic acid, vinyl acetate, acrylic acid iso The octyl ester was emulsion polymerized at 80° C. for 1.5 hours, and then added to the natural rubber emulsion to obtain a modified natural rubber emulsion grafted with acrylic acid. In the modified natural rubber latex, a tackifier epoxy resin is added to obtain a modified natural rubber latex grafted with acrylic acid.

[0064] Preparation of pressure-sensitive fing...

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PUM

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Abstract

The present invention relates to one kind of pressure-sensitive fingerprint adhesive for detecting amino compounds; and the pressure-sensitive fingerprint adhesive contains acrylic acid grafted modified natural rubber emulsion and ninhydrin or its derivative. The present invention also relates to the preparation process of the pressure-sensitive fingerprint adhesive and the acrylic acid grafted modified natural rubber emulsion. The pressure-sensitive fingerprint adhesive is used in extracting available or latent fingerprint and footprint and has simple and reliable method and low cost.

Description

technical field [0001] The invention relates to a pressure-sensitive fingerprint glue capable of detecting amino compounds; the invention also relates to a preparation method of the fingerprint glue. Background technique [0002] The usual fingerprint extraction method is to cover the moisture and fat in the secretion with silver powder of Al series, golden powder of Cu series, black powder of carbon series or other white powder and colored powder, and use the background color of the test material and the powder The color difference of the color is used to detect the fingerprint, and then the detected fingerprint is transferred to the hard film of the adhesive sheet and fixed. However, this method requires complex pretreatment and requires a certain degree of operational proficiency, and also has disadvantages such as contamination of test materials. [0003] In addition, it is also possible to cover the yellow powder on the test material, spray water in the form of a spray...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/04A61B5/1172C09J7/02
Inventor 刘丽明彭建林韩奎武
Owner PETROCHINA CO LTD
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