Composition and α-cyanoacrylate adhesive for reducing adhesive whitening phenomenon

A technology of cyanoacrylate and compound, which is applied in the field of compositions for reducing the whitening phenomenon of adhesives and α-cyanoacrylate adhesives, and can solve the problems of harsh sizing environment and high cost

Active Publication Date: 2021-12-31
HEBEI CHENGXIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the existing problems of high cost and strict requirements on the sizing environment in solving the problem of α-cyanoacrylate adhesive whitening, the present invention provides a composition for reducing the phenomenon of adhesive whitening and α-cyanoacrylate Acrylic Adhesives

Method used

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  • Composition and α-cyanoacrylate adhesive for reducing adhesive whitening phenomenon
  • Composition and α-cyanoacrylate adhesive for reducing adhesive whitening phenomenon
  • Composition and α-cyanoacrylate adhesive for reducing adhesive whitening phenomenon

Examples

Experimental program
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Effect test

Embodiment 1

[0058] The present embodiment provides a kind of α-cyanoacrylate ethyl ester adhesive, comprises following component:

[0059] α-Ethyl cyanoacrylate 1000g, maleic anhydride 2g, hexadecyl gallate 2.5g, p-methoxyphenol 1g, boron trifluoride-ether complex 0.04g, dibenzo-18-crown- 6 0.5g.

[0060] The preparation method of the above-mentioned α-cyanoacrylate ethyl ester adhesive is as follows:

[0061] Weigh each component according to the designed ratio, and completely dissolve the solids of each component while stirring at room temperature to obtain the α-cyanoacrylate ethyl ester adhesive.

Embodiment 2

[0063] The present embodiment provides a kind of α-cyanoacrylate ethyl ester adhesive, comprises following component:

[0064] 1000g of ethyl α-cyanoacrylate, 2g of phthalic anhydride, 2.5g of lauryl gallate, 1g of p-methoxyphenol, 0.04g of boron trifluoride-ether complex, dibenzo-18-crown-6 0.5g.

[0065] The preparation method of the above-mentioned α-cyanoacrylate ethyl ester adhesive is as follows:

[0066] Weigh each component according to the designed ratio, and completely dissolve the solids of each component while stirring at room temperature to obtain the α-cyanoacrylate ethyl ester adhesive.

Embodiment 3

[0068] The present embodiment provides a kind of α-cyanoacrylate ethyl ester adhesive, comprises following component:

[0069] α-Ethyl cyanoacrylate 1000g, itaconic anhydride 2g, maleic anhydride 1g, gallic acid 2.5g, lauryl gallate 2g, p-methoxyphenol 1g, boron trifluoride-diethyl ether complex 0.04g, Dibenzo-18-crown-6 0.5g.

[0070] The preparation method of the above-mentioned α-cyanoacrylate ethyl ester adhesive is as follows:

[0071] Weigh each component according to the designed ratio, and completely dissolve the solids of each component while stirring at room temperature to obtain the α-cyanoacrylate ethyl ester adhesive.

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Abstract

The invention relates to the technical field of α-cyanoacrylate adhesives, and specifically discloses a composition for reducing the whitening phenomenon of adhesives and α-cyanoacrylate adhesives. The composition for reducing the whitening phenomenon of adhesives includes acid anhydride compounds, gallic acid or gallic acid alkyl ester derivatives. In the present invention, acid anhydride compounds and gallic acid or gallic acid alkyl ester derivatives are combined and added to α-cyanoacrylate adhesives, and the synergistic effect of the two can significantly improve the α-cyano The whitening phenomenon of acrylate adhesives, especially low alkyl α-cyanoacrylate adhesives, makes the surface of the glue drop smooth and bright. The composition provided by the invention can exert dual effects of strengthening and low whitening, significantly improve the quality of α-cyanoacrylate adhesives, and has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of α-cyanoacrylate adhesives, in particular to a composition for reducing the whitening phenomenon of adhesives and α-cyanoacrylate adhesives. Background technique [0002] α-cyanoacrylate adhesive is a kind of one-component monomer type fast-curing adhesive, which has the advantages of rapid curing at room temperature, wide range of bonding materials, low viscosity and thin adhesive layer. And wood and other fields have been widely used. However, α-cyanoacrylate adhesives, especially α-cyanoacrylate lower alkyl ester adhesives, have a whitening phenomenon after curing, that is, whitening phenomenon, which limits their application in wood, handicrafts to a certain extent. and applications in electronics. [0003] The whitening phenomenon mainly occurs around the glue drop. The main reason is that the active molecules in the glue are scattered around the glue before solidification, and finally unreacted and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J11/06C09J4/04
CPCC09J11/06C09J4/00
Inventor 王虹李成果张朝纯董津李娟张林杰孙洁浩
Owner HEBEI CHENGXIN
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