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Adhesion-imparting agent and adhesion-imparting resin emulsion

A technology of tackifying resin and tackifier, which can be used in adhesives, rosin adhesives, chemical modification of natural resins, etc.

Inactive Publication Date: 2008-03-19
ARAKAWA CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, depending on the application, good adhesive performance may not be obtained, and there is also a problem of fuming during melting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Polymerized rosin ester (product name: PENSEL D-160, manufactured by Arakawa Chemical Industry Co., Ltd.) was melted at 280° C., and vacuum distillation was performed at 0.5 kPa for 1 hour. The softening point of the remaining tackifier was 442K. The content of components having a molecular weight of 300 or less was 1.7%. The value of content (%) / softening point (K) of the component whose molecular weight is 300 or less was 0.0038.

[0070] In addition, each measured value was measured by the following method. The results are shown in Table 1.

[0071] (Softening Point)

[0072] Measured in accordance with JIS K 5902 and converted to absolute temperature.

[0073] (Content of components with a molecular weight of 300 or less)

[0074] Gel permeation chromatography (GPC) (manufactured by TOSOH Corporation, product name: HLC-8120, column: manufactured by TOSOH Corporation, product name: TSKgelSuper HM-Lx, 3 pieces), from values ​​measured using tetrahydrofuran as a s...

Embodiment 2

[0080] It carried out in the same manner as in Example 1 except that the polymerized rosin ester in Example 1 was changed to a disproportionated rosin ester (product name: Super Ester T-125, manufactured by Arakawa Chemical Industry Co., Ltd.). The properties of the obtained tackifier are shown in Table 1.

Embodiment 3

[0082] Except having changed the vacuum distillation time of Example 2 into 2 hours, it carried out similarly to Example 2. The properties of the obtained tackifier are shown in Table 1.

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PUM

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Abstract

The present invention provides a tackifier that is a raw material of an adherence adhesive having good adhesion performance (in particular, holding power) for all members and can be used for various adherence adhesives, and a tackifier emulsion capable of being used for various aqueous adherence adhesives. The tackifier and the tackifier emulsion including a rosin resin wherein a ratio of the content of a component with a molecular weight of at most 300 comprised in the rosin resin to the softening point of the rosin resin (the content (% by weight) of a component with a molecular weight of at most 300 / softening point (K)) is at most 0.004; and the adherence adhesive composition including the tackifier; and the aqueous adherence adhesive composition including the tackifier emulsion.

Description

technical field [0001] The present invention relates to a tackifier, a tackifying resin latex, an adhesive / adhesive composition containing the tackifier, and a water-based adhesive / adhesive composition using the tackifying resin latex. Background technique [0002] Adhesives and adhesives are widely used to fix components, but after bonding, each component must be firmly fixed under various environmental conditions, that is, it must have a strong holding force. However, the adhesive properties of adhesives and adhesives vary depending on the type of member to be bonded, and adhesives and adhesives that have good adhesive properties (adhesion, holding power, etc.) to any member are required. adhesive. [0003] In adhesives and adhesives, tackifiers are often used for the purpose of improving their adhesive properties, etc. Rosin-based tackifiers are widely used as a kind of tackifiers because of their adhesive properties. in all aspects. Rosin-based tackifiers are derived ...

Claims

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Application Information

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IPC IPC(8): C09J193/04C08J3/07C09F1/04C09J201/00
Inventor 宫本拓郎
Owner ARAKAWA CHEM IND LTD
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