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Double-faced adhesive tape

A technology of double-sided adhesive tape and adhesive layer, which is applied in the direction of film/sheet adhesive, adhesive, synthetic resin layered products, etc., can solve the problems of high cost, depletion of petroleum resources, and lack of economy. , to achieve the effect of excellent rebound resistance, high biomass and excellent retention

Active Publication Date: 2015-11-04
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As the raw material used in the double-sided adhesive tape, for example, silicone-based adhesives or acrylic adhesives are used, but in the case of silicone-based adhesives, the cost is high, so it lacks economical efficiency. On the one hand, in the case of acrylic adhesives, although the cost is low, since petroleum is often used as a raw material, there may be a problem of depletion of petroleum resources. In addition, carbon dioxide is emitted due to disposal after use. , so no consideration is given to the global environment, and global warming countermeasures are required, so the use of raw materials derived from plants as renewable materials is recommended

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0088] Examples of the present invention will be given below to describe the present invention in more detail, but the present invention is not limited by these examples. In addition, "part" in an Example shows "weight part", and "%" shows "weight%". In addition, Table 1 shows the compounding contents and evaluation results of the pressure-sensitive adhesive layer (double-sided pressure-sensitive adhesive tape).

[0089]

[0090] A stirrer, a thermometer, and a vacuum pump were installed in a three-necked separable flask, and 98.24 g of dimer acid (trade name "Pripol 1009", molecular weight 567, manufactured by Croda Corporation) and dimer alcohol (trade name "Pripol 2033", molecular weight 537 , Croda Co., Ltd.) 101.76 g, dibutyltin oxide (Wako Pure Chemical Industries, Ltd.) 0.2 g as a catalyst, heated up to 200° C. while stirring in a reduced-pressure atmosphere (2.0 kPa or less), and maintained the temperature. The reaction was continued for about 3 hours to obtain poly...

Embodiment 2

[0098] A double-sided adhesive tape was obtained in the same manner as in Example 1, except that the tackifier was changed to rosin ester (trade name "PENSEL D135", manufactured by Arakawa Chemical Industry Co., Ltd.) and 4 parts of crosslinking agent were added.

Embodiment 3

[0100] A double-sided adhesive tape was obtained in the same manner as in Example 2, except that 80 parts of a tackifier and 7 parts of a crosslinking agent were added to 100 parts of polyester B.

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Abstract

Provided is a double-faced adhesive tape that is for securing electronic device members, has excellent adhesiveness, retention, and resistance to resilience, and can be manufactured even with a plant-derived material having a high biomass degree. This double-faced adhesive tape for securing electronic device members is characterized by comprising an adhesive layer in which the biomass degree is 50 wt% or greater.

Description

technical field [0001] The invention relates to a double-sided adhesive tape for fixing components of electronic equipment. Background technique [0002] OA devices such as mobile phones, digital cameras, PDAs, and digital video cameras, and electronic components (especially mobile devices) have increased in production in recent years due to their popularity, and miniaturization and thinning have been achieved along with higher functionality. For example, in a typical mobile phone as a mobile device, there is a tendency for the main components involved in the configuration to be thinned in order to achieve an enlarged display screen and improved portability. [0003] Generally speaking, the display part is mainly composed of an LCD module and a backlight unit. In order to realize functions such as light emission, reflection, light shielding, and light guiding, various sheet-shaped parts are used (laminated). In assembling (connecting) these components, a double-sided adhesi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00B32B27/00C09J7/02C09J201/00C09J7/20
CPCC09J7/02B32B27/00C09J2201/128C09J2201/606C09J2203/326C09J167/08C09J7/20C08L93/04C09J2301/124C09J2301/302C09J167/02
Inventor 田中亚树子石黑繁树吉江里美
Owner NITTO DENKO CORP
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