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Acrylate emulsion and application thereof

A technology of acrylate and emulsion, which is applied in the field of polyester film, can solve the problems of environmental pollution, the difficulty of forming chemical bonds between the base coat and the functional coating, etc., and achieve the effect of improving the adhesion of the film and improving the adhesion

Active Publication Date: 2015-11-18
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the acrylate emulsion provided by the above technology is applied to the surface of the polyester film to improve its adhesion, the above-mentioned acrylate emulsion is polymerized by a solution method and contains an organic solvent. The synthesized emulsion has a certain smell and pollutes the environment; and the above-mentioned emulsion After the surface of the coated film is cured, it does not contain active groups that can participate in UV curing, and it is difficult to form an effective chemical bond between the primer and the functional coating

Method used

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  • Acrylate emulsion and application thereof

Examples

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Effect test

Embodiment 1

[0028] 1. Preparation of Acrylate Emulsion

[0029] (1) Add 220g of deionized water and 1g of sodium acrylamide stearate into the reactor, stir and mix quickly to obtain mixture A; weigh 1 / 3 of the weight of mixture A to dissolve 1g of potassium persulfate to obtain the initiator solution; take 3g acetoacetoxyethyl methacrylate, 25g methyl methacrylate, 23g ethyl acrylate, 1g methacrylic acid, 2g diacetone acrylamide, 5g isobornyl methacrylate and mix uniformly to obtain a mixed single Body B.

[0030] (2) Add 1 g of sodium bicarbonate and 1 / 8 of the weight of mixed monomer B to the reactor containing the remaining mixture A, and pre-emulsify for 20 minutes; the temperature of the reactor is raised to 80 ° C, and the initiator solution is added dropwise until the emulsion becomes After blueing, add the initiator solution and the remaining mixed monomer B dropwise at the same time, keep warm for 2.5 hours after the addition, cool down to 40°C, add N,N-dimethylethanolamine to ...

Embodiment 2

[0035] (1) Add 200g of deionized water and 0.5g of 3-allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt into the reactor, stir and mix evenly to obtain mixture A; weigh 1 / 2 of the weight of mixture A 4 is used to dissolve 0.8g ammonium persulfate to obtain an initiator solution; weigh 2.5g acetoacetoxyethylene glycol methacrylate, 15g methyl methacrylate, 5g styrene, 15g isooctyl acrylate, 2g acrylic acid, Mix 2g of diacetone acrylamide and 6g of 2-phenoxyethyl acrylate to obtain mixed monomer B.

[0036] (2) Add 0.8g of ammonium bicarbonate and 1 / 5 of the weight of mixed monomer B to the reactor containing the remaining mixture A, pre-emulsify for 25 minutes, raise the temperature to 82°C, and add the initiator solution dropwise until the emulsion turns blue , add the initiator solution and the remaining mixed monomer B dropwise at the same time, keep warm for 1 hour after the addition, cool down to 45°C, add hexamethylenediamine to neutralize to a pH value of 8, and obtai...

Embodiment 3

[0040] (1) Add 150 g of deionized water, 0.7 g of sodium acrylamide stearate, and 0.8 g of 3-allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt into the reactor, stir and mix evenly to obtain mixture A 1 / 2 of the weight of mixture A is weighed for dissolving 0.5g potassium persulfate to obtain initiator solution; 4g3-benzoyl ethyl acrylate, 25g methyl methacrylate, 15g styrene, 25g acrylic acid Ethyl ester, 5 g of methacrylic acid, 5 g of tetrahydrofuryl methacrylate, and 5 g of isobornyl methacrylate were uniformly mixed to obtain mixed monomer B.

[0041] (2) Add 1.5g of sodium bicarbonate and 1 / 7 of the weight of mixed monomer B to the reactor containing the remaining mixture A, and pre-emulsify for 30 minutes; the temperature of the reactor is raised to 75°C, and the initiator solution is added dropwise to the emulsion After turning blue, add the initiator solution and the remaining mixed monomer B dropwise at the same time, keep warm for 2 hours after the addition, coo...

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Abstract

The invention relates to an acrylate emulsion. Acetoacetoxy ethyl methacrylate is taken as a functional monomer, an acetoacetic acid group reacts with amine to generate enamine in the neutralizing stage of synthesis of the emulsion, enamine participates in later curing crosslinking, the shrinking percentage of the functional monomer is low, and internal stress during curing shrinking of a film is relieved. The surface of a polyester film is coated with the acrylate emulsion, permeation and spreading of a coating solution on a function coating are facilitated after high-temperature horizontal stretching and curing, the adhesion force between the function coating and the polyester film is high, and shedding is prevented. The optical polyester film with the surface coating can be used for the fields of a reflecting film, a hardening film, a window film and the like, and the film reprocessing demands are met.

Description

technical field [0001] The invention relates to an acrylic ester emulsion for primer coating of a polyester film. Besides, the invention also relates to a polyester film coated with the emulsion on the surface. Background technique [0002] Polyethylene terephthalate (PET) film is widely used in liquid crystal display (LCD), in-mold decoration (such as brightness enhancement film, diffusion film, Hardened film, etc.) and other production areas. However, due to the highly crystalline orientation of the polyester film surface, its surface properties are poor, and its adhesion to various inks, adhesives, coatings and other substances is poor. Generally, the adhesion between polyester film and other functional coating interfaces can be improved by coating the surface of thermoplastic resin film with an adhesive modification layer containing adhesives such as polyester resin, polyacrylate resin, and polyurethane resin. Focus on. [0003] In the prior art, Chinese patent 201310...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F212/08C08F220/18C08F220/28C08F220/06C08F220/58C08F222/20C08F2/26C09D133/12C09D7/12C08J7/04C08L67/00
Inventor 安佳丽周守发王辉王增敏李彩翠汪志松
Owner HEFEI LUCKY SCI & TECH IND
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