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Sulfur-free polyacrylate emulsion pressure-sensitive adhesive and preparing method thereof

A polyacrylate emulsion and element technology, used in ester copolymer adhesives, adhesive types, adhesive additives, etc., can solve the problem of poor transparency of pressure-sensitive adhesives, black and dark metal substrates, affecting products Appearance and other problems, to avoid the metal substrate contact discoloration, reduce the content, avoid corrosion and discoloration

Active Publication Date: 2013-10-16
DONGGUAN FURONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of emulsion-type pressure-sensitive adhesives at this stage is still difficult to meet the requirements of solvent-type pressure-sensitive adhesives, and their synthesis usually uses components containing sulfur elements, such as sulfates, sulfonate emulsifiers, and persulfates. Agents, sulfonate wetting agents, etc. Sulfur-containing compounds are likely to cause yellowing of the emulsion after film formation, poor transparency of the pressure-sensitive adhesive, and chemical reactions with the metal after bonding to the metal substrate, resulting in metal substrates Turning black and dark, seriously affecting the appearance of the product

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0046] The preparation method of polyacrylate emulsion hydraulic sensitive adhesive without sulfur element of the present invention has the following steps:

[0047] 1) Preparation of pre-emulsion

[0048] Weigh 20~35 parts of deionized water and 0.25~0.95 parts of phosphate emulsifier, mix and stir, then add the formula amount of soft monomer, hard monomer, unsaturated carboxylic acid monomer and functional monomer, continue Stir and emulsify, and obtain a pre-emulsion after 15 minutes of emulsification;

[0049] 2) Preparation of polyacrylate emulsion without sulfur

[0050] First add the remaining deionized water and phosphate emulsifier to the reaction kettle, then stir and increase the temperature, control the temperature between 75 and 85 ℃, add the azo initiator of the above formula, and add step 1) For all the prepared pre-emulsions, the dripping time is controlled at 2.5~4.0h, then the temperature is raised to 88℃, the constant temperature reaction is 1h, the temperature is ...

Embodiment 1

[0056] The raw materials used in this implementation are measured in parts by weight as follows:

[0057] 80 parts deionized water

[0058] Rhodia RS-610 0.3 copies

[0059] 80 parts of butyl acrylate

[0060] 5 parts of methyl methacrylate

[0061] Acrylic 1 part

[0062] Phosphate monomer 2 parts

[0063] Azobisisobutyronitrile 0.3 parts

[0064] Eliminate worries 420 0.25 servings

[0065] 0.10 parts of mineral oil defoamer.

[0066] The preparation method of the polyacrylate emulsion hydraulic sensitive adhesive without sulfur in this embodiment is as follows:

[0067] 1) Preparation of pre-emulsion

[0068] Weigh 20 parts of deionized water and 0.25 parts of Rhodia RS-610, mix and stir, then add the formula amount of butyl acrylate, methyl methacrylate, acrylic acid and phosphate monomers, continue to stir and emulsify, emulsify for 15 minutes Then get the pre-emulsion;

[0069] 2) Preparation of polyacrylate emulsion without sulfur

[0070] First add the remaining amount of deionized wate...

Embodiment 2

[0074] The raw materials used in this implementation are measured in parts by weight as follows:

[0075] 86 parts deionized water

[0076] Rhodia RS-710 0.5 copies

[0077] 84 parts of isooctyl acrylate

[0078] 8 parts of methyl acrylate

[0079] 1.8 parts of methacrylic acid

[0080] 4 parts of acetoacetoxy ethyl methacrylate

[0081] 0.5 parts of azobisisobutylamidine hydrochloride

[0082] Worry 440 0.2 copies

[0083] 0.1 part of mineral oil defoamer.

[0084] The preparation method of the polyacrylate emulsion hydraulic sensitive adhesive without sulfur in this embodiment is as follows:

[0085] 1) Preparation of pre-emulsion

[0086] Weigh 25 parts of deionized water and 0.4 parts of Rhodia RS-710, mix and stir, then add the formula amount of isooctyl acrylate, methyl acrylate, methacrylic acid and acetoacetoxy ethyl methacrylate, continue Stir and emulsify, and obtain a pre-emulsion after 15 minutes of emulsification;

[0087] 2) Preparation of polyacrylate emulsion without sulfur

[0...

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Abstract

The invention discloses a sulfur-free polyacrylate emulsion pressure-sensitive adhesive and preparing method thereof. The sulfur-free polyacrylate emulsion pressure-sensitive adhesive includes the following raw materials in parts by weight: 95-100 parts of sulfur-free polyacrylate emulsion, 0.05-1.0 part of HD-M wetting agent and 0.05-0.2 part of mineral oil defoamer. According to the invention, raw materials such as the sulfur-free polyacrylate emulsion emulgator, HD-M wetting agent and azo initiator are adopted, and the introduction of sulfur is completely avoided, so that the problems of yellowed emulsion films and color change caused by the contact with metal base materials are solved, the appearance of used products is improved; selected materials are reasonably matched, a high-transparency adhesive tape can be obtained, besides, the peel strength and permanent adhesion of the adhesive tape are higher.

Description

Technical field [0001] The invention relates to an emulsion pressure-sensitive adhesive, in particular to a polyacrylate emulsion hydraulic-sensitive adhesive without sulfur elements. The invention also relates to a preparation method of a polyacrylate emulsion hydraulic-sensitive adhesive without sulfur elements. Background technique [0002] Pressure-sensitive adhesive is an adhesive closely related to people’s daily life, and it is also one of the most widely used and largest-volume adhesive varieties. With the improvement of people’s living standards, the quality and environmental protection of pressure-sensitive adhesive products , Energy saving and other requirements are getting higher and higher. However, the performance of emulsion-based pressure-sensitive adhesives at this stage is still difficult to meet the requirements of solvent-based pressure-sensitive adhesives, and its synthesis usually uses components containing sulfur, such as sulfates, sulfonate emulsifiers, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J11/06C08F220/18C08F4/04C08F2/26
Inventor 梁志武胡相义
Owner DONGGUAN FURONG CHEM
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