Water-dispersed acrylic acid series sticker composition and adhesion sheet and preparation method thereof

An acrylic emulsion, acrylic technology, applied in the directions of non-polymer adhesive additives, adhesives, ester copolymer adhesives, etc., can solve the balance of undisclosed fixing effect, adhesion, surface adhesion, and re-peelability Good adhesive sheet and other problems, to achieve the effect of easy re-peelability, good adhesion to curved surfaces, and easy peeling

Active Publication Date: 2011-05-11
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, there is no disclosure of an adhesive sheet that has a good balance of fixing effect on various substrates such as synthetic resin, which is one of paper substrates and difficult-to-adhesive substrates, adhesiveness, curved surface adhesiveness, and re-peelability.

Method used

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  • Water-dispersed acrylic acid series sticker composition and adhesion sheet and preparation method thereof
  • Water-dispersed acrylic acid series sticker composition and adhesion sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0167] 93 parts by mass of 2-ethylhexyl acrylate (2EHA) and 5 parts by mass of methyl methacrylate (MMA) as components of (a1) were added to a container with a stirrer, a thermometer, and a dropping funnel, and as (a2) 1.0 parts by mass of methacrylic acid (MAA), 1.0 parts by mass of acrylic acid (AA), 0.1 part by mass of lauryl mercaptan as a chain transfer agent, and sodium alkylpolyoxyethylene ether sulfate [anion type non-reactive emulsifier "Latemol E-118B", manufactured by Kao Corporation] 2 parts by mass, sodium allyl alkyl sulfosuccinate [anionic non-reactive emulsifier "Eleminol JS-2", Sanyo Kasei Co., Ltd.] 3 parts by mass and 56 parts by mass of ion-exchanged water were stirred at room temperature to prepare an emulsion of an unsaturated monomer mixture in advance.

[0168] In addition, 28 parts by mass of ion-exchanged water was added to a reaction device having a stirrer, a reflux condenser, a thermometer, a nitrogen gas introduction pipe, and a dropping funnel, n...

Embodiment 2

[0173] Except that the amount of 2EHA is 83 parts by mass, the amount of lauryl mercaptan is 0.15 parts by mass, and 10 parts by mass of methyl acrylate (MA) is added as the component (a1), the operation is carried out according to Example 1 to produce baseless Adhesive sheets and adhesive sheets were used for the same measurement and evaluation.

Embodiment 3

[0175] In addition to 97.5 parts by mass of n-butyl acrylate (BA) as the component (a1), 1.0 parts by mass of 2-hydroxyethyl methacrylate (2-HEMA) as the component (a3), and 1.5 parts by mass of MAA as the unsaturated mono The composition of the body mixture, and make relative to 100 mass parts of the emulsion polymerization composition, the consumption of epoxy-based crosslinking agent is 0.6 mass parts, operate according to Example 1, make no substrate adhesive sheet and adhesive sheet, carry out Same measurement and evaluation.

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Abstract

The invention provides a water-dispersed acrylic acid series sticker composition which has high adhesion property of substrate, good restripping property and good curved surface adhesion even when a transfer printing and coating method is adopted, and an adhesion sheet and a preparation method thereof. The composition comprises an acrylic acid series emulsion (A) and a cross-linking agent (B). The acrylic acid series emulsion (A) is obtained by conducting an emulsion polymerization on an unsaturated monomer mixture with the existence of a redox series polymerization initiator. The unsaturated monomer mixture comprises a (methyl) acrylic acid alkyl ester and an unsaturated monomer with a carboxyl. The composition is coated on the stripping sheet and is dried. The weight average molecular weight of a solvent soluble substance in the dried envelope just adhered to the substrate is over 150 thousand. The gel fraction (i) in the dried envelope is within 0-60%. The gel fraction (ii) in the dried envelope which has undergone slaking for seven days at the temperature of 40 DEG is within 50-99%. The difference between the gel fraction (i) and the gel fraction (ii) is over 20%.

Description

technical field [0001] The present invention relates to a water-dispersed acrylic adhesive composition, an adhesive sheet and their preparation methods. More specifically, it is applicable to films such as synthetic resins, which are one of difficult-to-adhesive substrates, even if it is a transfer coating method, and is good in adhesion and adhesion to curved surfaces, and can be adhered to the adhesive for a long period of time without loosening and peeling. Water-dispersed acrylic adhesive composition, adhesive sheet, and preparation thereof that are easy to peel without causing slurry residue on the adherend and can be easily peeled off after a long period of time on the body, and have good re-peelability method. Background technique [0002] In recent years, from the standpoint of environmental issues, etc., the replacement of conventionally used solvent-based adhesives with solvent-free adhesives has become popular, and the development of so-called environmentally fri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/00C09J133/08C09J11/06C09J7/02C08F220/18C08F220/14C08F220/06C08F2/22C08F4/40
Inventor 池田文德
Owner LINTEC CORP
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