Pressure-sensitive adhesive composite with repulping property and double-sided pressure-sensitive adhesive tape

A technology of pressure-sensitive adhesives and compositions, applied in the direction of adhesives, film/sheet adhesives, adhesive types, etc. The problem of easy separation of plasticizers, etc., achieves the effects of improved wettability, good repulpability, and high 180° peel strength

Inactive Publication Date: 2010-12-15
ZHEJIANG HEXIN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, crosslinking will lead to a substantial reduction in the initial tack of the adhesive
In U.S. patents such as US4413080 and US3865770, the initial tack of the pressure-sensitive adhesive is improved by adding a large amount of plasticizer, but adding this plastic

Method used

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  • Pressure-sensitive adhesive composite with repulping property and double-sided pressure-sensitive adhesive tape
  • Pressure-sensitive adhesive composite with repulping property and double-sided pressure-sensitive adhesive tape
  • Pressure-sensitive adhesive composite with repulping property and double-sided pressure-sensitive adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～10

[0048] The acrylate copolymer in the pressure-sensitive adhesive composition is prepared by free radical solution polymerization, and the preparation process is as follows: add monomer, AIBN and ethyl acetate to a multi-necked flask equipped with nitrogen inlet, stirrer, condenser and thermometer, Keep the temperature at 65° C. for 5 hours, raise the temperature to 80° C., and continue polymerization for 2 hours to obtain an acrylate copolymer solution. The amounts of monomers, initiators and other components in the acrylate copolymers of Examples 1-10 are shown in Table 1.

[0049] Table 1 - Acrylate Copolymer Composition

[0050]

[0051] The pressure-sensitive adhesive composition is prepared according to the following method: at room temperature, add a KOH aqueous solution with a mass percent concentration of 45% to the above-mentioned acrylate copolymer solution, stir for 10 minutes, add plasticizer, TGIC, IR1076, RL, etc., stir After uniform coating, the pressure-sen...

Embodiment 5～7

[0054] Table 3 - Components in the pressure-sensitive adhesive composition of Examples 5-7

[0055]

Embodiment 8～10

[0056] Table 4 - Components in the pressure-sensitive adhesive composition of Examples 8-10

[0057]

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PUM

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Abstract

The invention discloses a pressure-sensitive adhesive composite with the repulping property, which mainly comprises the following components in parts by weight: 70-89 parts of acrylic ester polymer and alkali, 9-28 parts of polyethylene glycol monomethyl ether plasticizer, 0.5-1 part of cross-linking agent, 0.2-0.5 part of antioxidant and 0-0.5 part of colorant, wherein the amount of the alkali is measured based on the molar ratio of carboxyl to be neutralized by the alkali, which accounts for 30-70 percent of the total molar ratio of the carboxyl in the acrylic ester polymer. The invention also discloses a double-sided pressure-sensitive adhesive tape prepared from the pressure-sensitive adhesive composite with the repulping property, which comprises two pressure-sensitive adhesive layers, can be used as an adhesive material, has the advantages of very strong initial stickiness and continuous stickiness, 180-degree peel strength and excellent repulping property, cannot pollute equipment in the waste paper recycling process and accords with the current requirements on environmental protection and sustainable development.

Description

technical field [0001] The invention relates to the technical field of pressure-sensitive adhesives, in particular to a repulpable pressure-sensitive adhesive composition and a double-sided pressure-sensitive adhesive tape. Background technique [0002] The papermaking, printing and packaging industries use a large number of pressure-sensitive adhesive products: for example, in the production, processing and printing of paper, it is necessary to use pressure-sensitive tape to connect the front and rear paper rolls to ensure the continuity of production; The industry also requires large quantities of pressure sensitive tapes for sealing or pressure sensitive labels for identification. Therefore, waste paper will contain a considerable proportion of pressure-sensitive adhesive products, which will become an important source of "adhesive substances" in the production process. During the recycling process of waste paper, the adhesive in pressure-sensitive adhesive products will...

Claims

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Application Information

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IPC IPC(8): C09J151/08C09J133/08C09J7/04
Inventor 李建陈跃祖韩守臣赵成浩
Owner ZHEJIANG HEXIN TECH
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