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A kind of amphiphilic adhesive of crown cap polyolefin gasket and its preparation method and application

A polyolefin and adhesive technology, which is applied in the direction of adhesives, adhesive types, non-polymer adhesive additives, etc., can solve the problem of poor adhesion of polyolefin materials and the inability to bond crown caps to polyolefin gaskets and other problems, to achieve the effect of good sealing performance, good hygienic performance and great application prospects

Active Publication Date: 2021-11-26
杜潇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bisphenol A epoxy resin adhesive has poor adhesion to non-polar polyolefin materials, and still cannot be used for the bonding of crown caps and polyolefin gaskets

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) At room temperature, 3.5 grams of ethylene glycol monobutyl ether and 0.03 gram of Tween 80 are sheared and emulsified completely under the action of a high-speed shear emulsifier, and then the molecular weight configured is 160,000 isotactic polypropylene (0.15 grams) ) of the toluene solution was slowly dropped into the above-mentioned emulsion, and vigorously stirred during the dropping process. After the isotactic polypropylene chloroform solution was completely dripped, the stirring was continued for 10 minutes. The toluene was evaporated under reduced pressure, and 2.0 grams of propylene glycol monomethyl ether was added to obtain the following: Propylene glycol monomethyl ether and ethylene glycol monobutyl ether are the dispersion medium of the mixed diluent, and isotactic polypropylene latex particles are the dispersion system of the dispersant.

[0036] (2) Add 3.0 grams of bisphenol A epoxy resin with a molecular weight of 1700 and 0.15 grams of 2-ethyl-4-...

Embodiment 2

[0041] (1) At room temperature, 3.5 grams of ethylene glycol monobutyl ether and 0.03 grams of Tween 60 were sheared and emulsified completely under the action of a high-speed shear emulsifier, and then the molecular weight of the configuration was 130,000 isotactic polypropylene (0.16 grams) ) of the toluene solution was slowly dropped into the above-mentioned emulsion, and vigorously stirred during the dropping process. After the isotactic polypropylene toluene solution was completely dripped, the stirring was continued for 10 minutes. The toluene was evaporated under reduced pressure, and 2.4 grams of propylene glycol monomethyl ether was added to obtain the following: Propylene glycol monomethyl ether and ethylene glycol monobutyl ether are the dispersion medium of the mixed diluent, and isotactic polypropylene latex particles are the dispersion system of the dispersant.

[0042] (2) 3.0 grams of molecular weight is 2000 bisphenol A type epoxy resin, 0.12 grams of 2-ethyl-4...

Embodiment 3

[0046] (1) At room temperature, 2.8 grams of propylene glycol monomethyl ether, 3.6 grams of ethylene glycol monobutyl ether and 0.03 grams of Tween 80 are sheared and emulsified completely under the action of a high-speed shear emulsifier, and then the configured molecular weight is 180,000 The chloroform solution of isotactic polypropylene (0.15 g) was slowly dropped into the above-mentioned emulsion, and vigorously stirred during the dropping process. After the isotactic polypropylene chloroform solution was completely dripped, the stirring was continued for 10 minutes, and the chloroform was evaporated under reduced pressure to obtain propylene glycol. Monomethyl ether and ethylene glycol monobutyl ether are the dispersion medium of the mixed diluent, and isotactic polypropylene latex particles are the dispersion system of the dispersant.

[0047] (2) Add 3.0 grams of bisphenol A epoxy resin with a molecular weight of 2000 and 0.12 grams of 2-ethyl-4-methylimidazole into th...

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Abstract

The invention discloses an amphiphilic adhesive for a crown cover polyolefin gasket and a preparation method and application thereof. The adhesive is prepared from the following raw material components in parts by mass: 25-40 parts of bisphenol A epoxy resin, 1.0-2.5 parts of curing agent, 35-45 parts of ethylene glycol monobutyl ether, propylene glycol monomethyl ether 20-30 parts of ether, 1.0-2.5 parts of polyolefin, and 0.2-1.0 parts of surfactant. The adhesive of the invention can be applied to the bonding of crown caps for beer and beverages and polyolefin gaskets, and has good adhesion, firm bonding of polyolefin gaskets, good temperature resistance and good sealing performance, and the coating dry film has good adhesion. It has no harm to human body and good hygienic performance; it is helpful to realize the smooth replacement of polyvinyl chloride gaskets by polyolefin gaskets, and promote the promotion and application of polyolefin gaskets for beer and beverage crown caps, which has a great application prospect.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to an amphiphilic adhesive for a crown cap polyolefin gasket and a preparation method and application thereof. Background technique [0002] As a main means of sealing bottled beer and beverages, crown caps have a great impact on the quality of bottled contents due to their sealing performance. The inner gasket of the crown is the key factor to determine the sealing performance of the bottle, and the material of the inner gasket and the adhesion between the crown and the gasket directly affect the sealing performance of the entire crown. In the past, the inner gasket of polyvinyl chloride (PVC) was widely used in China, which was prepared by mixing PVC and pigments and fillers with a large amount of plasticizers. Since PVC gaskets contain a large amount of plasticizers, these plasticizers Agents will migrate into the packaged food, not only affecting the taste of the food, but al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C09J123/06C09J123/12C09J11/06
CPCC08K2201/014C08L2201/08C08L2207/10C09J11/06C09J163/00C08L23/06C08K5/06C08L23/12
Inventor 杜潇
Owner 杜潇