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Medium-viscosity protective film emulsion and preparation method thereof

A technology of protective film and emulsion, applied in the direction of adhesive, adhesive type, pressure-sensitive film/sheet, etc., can solve the problems of difficult to tear film, poor conformability of protective film emulsion, etc., to achieve increased peeling force and excellent conformability , easy to peel off effect

Inactive Publication Date: 2020-06-16
SHANGHAI BAOLIJIA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing protective film emulsion has poor conformability and is difficult to tear the film after use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The protective film emulsion preparation process of the present embodiment is:

[0028] Weigh 16.5g of deionized water, 0.4g of fatty alcohol ether sulfate, 0.2g of isomeric C13 alcohol polyoxyethylene ether, place in an emulsification tank, stir for 20 minutes, add 2.7g of methyl methacrylate, 37.8g of butyl acrylate Ester, 2.7g isooctyl acrylate, 1.35g acrylic acid, 0.45g diallyl phthalate, stirred for 30 minutes to obtain an emulsion and set aside. Weigh 4 g of deionized water and dissolve 0.28 g of ammonium persulfate to prepare an aqueous initiator solution for subsequent use. Weigh 30g of deionized water, 0.05g of fatty alcohol ether sulfate, and 0.05g of isomeric C13 alcohol polyoxyethylene ether in the reactor, stir and heat up to 80-85°C, add 5% of the total amount of the emulsion, and the initiator 57% of the total amount of aqueous solution, reacted for 15 minutes, began to drop the remaining emulsion and initiator aqueous solution synchronously and uniforml...

Embodiment 2

[0034] The protective film emulsion preparation process of the present embodiment is:

[0035] Weigh 90.0g of deionized water, 3.0g of fatty alcohol ether sulfate, 1.0g of isomeric C13 alcohol polyoxyethylene ether, place in an emulsification tank, stir for 20 minutes, add 11.25g of methyl methacrylate, 195.75g of butyl acrylate ester, 7.88g of isooctyl acrylate, 5.67g of hydroxypropyl acrylate, and 4.6g of β-carboxyethyl acrylate, stirred for 30 minutes to prepare an emulsion for later use. Weigh 22.5 g of deionized water and dissolve 1.35 g of sodium persulfate to prepare an aqueous initiator solution for subsequent use. Weigh 150g of deionized water, 0.5g of fatty alcohol ether sulfate, and 0.5g of isomeric C13 alcohol polyoxyethylene ether in the reaction kettle, stir and heat up to 80-85°C, add 5% of the total amount of the emulsion, and the initiator 60% of the total amount of aqueous solution, reacted for 20 minutes, began to drop the remaining emulsion and initiator a...

Embodiment 3

[0041] The protective film emulsion preparation process of the present embodiment is:

[0042]Weigh 170.0g of deionized water, 6.05g of fatty alcohol ether sulfate, 1.45g of isomeric C13 alcohol polyoxyethylene ether, place in an emulsification tank, stir for 20 minutes, add 32.2g of methyl methacrylate, 367.2g of butyl acrylate Ester, 30.82g isooctyl acrylate, 13.85g methacrylic acid, 5.93g hydroxyethyl acrylate, stirred for 30 minutes to obtain an emulsion and set aside. Weigh 43.8g of deionized water and dissolve 3.0g of potassium persulfate to prepare an aqueous initiator solution for subsequent use. Weigh 310g of deionized water, 1.0g of fatty alcohol ether sulfate, and 0.7g of isomeric C13 alcohol polyoxyethylene ether in the reaction kettle, stir and heat up to 80-85°C, add 5% of the total amount of the emulsion, and the initiator 60% of the total amount of aqueous solution, reacted for 20 minutes, began to drop the remaining emulsion and initiator aqueous solution syn...

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Abstract

The invention relates to a medium-viscosity protective film emulsion and a preparation method thereof. The emulsion comprises the following components: acrylate monomers, functional monomers, an emulsifier, an initiator, a neutralizer and deionized water, preferably, methyl methacrylate is used as a hard monomer; butyl acrylate and 2-ethylhexyl acrylate are used as soft monomers, although the dosage of the functional monomers is small, by addition of the functional monomers for polymerization with the soft and hard monomers, the prepared acrylate emulsion polymer contains certain functional groups with high polarity, so that cohesion and bonding performance of the adhesive can be obviously improved. A pre-emulsification seed polymerization process is adopted, so that the water resistance is excellent, the fitness is excellent, and the time-dependent change of the flitch is small. The stripping force of the protective film prepared by the product is increased by not more than 10% afterhalf a year, and the protective film is easy to strip off when being removed without polluting the surface of the base material.

Description

technical field [0001] The invention belongs to the technical field of protective film emulsion, and specifically relates to a medium-viscosity protective film emulsion and a preparation method thereof. Background technique [0002] Surface protection film is an extremely important product in the field of pressure-sensitive adhesives in recent years. It is made by coating the protective film emulsion on the surface of PE or PVC film substrate. It is a film-shaped film with protective function for other materials. Material. The surface protection film is mainly applied on the surface of the material to protect the material from being scratched, polluted and corroded during processing, manufacturing, transportation and storage, and to retain the original high brightness and cleanliness of the surface of the protected product. The performance of the surface protective film requires no damage to the surface of the protective material when it is torn off from the surface of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/38C09J7/24C09J133/08C08F220/18C08F220/14C08F220/06C08F218/18C08F220/20C08F222/16
CPCC08F220/18C09J133/064C09J133/066C09J2423/046C09J2433/00C09J7/243C09J7/385
Inventor 慕学斐
Owner SHANGHAI BAOLIJIA NEW MATERIAL CO LTD
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