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Carboxylic acid group-containing polyester adhesive composition

A composition and adhesive technology, applied in the direction of film/sheet adhesive, adhesive type, adhesive, etc., can solve the problems of short life and difficult circulation of sheets, and achieve excellent sheet life and durability. The effect of excellent solderability and good adhesion

Active Publication Date: 2021-12-28
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these compositions have a short pot life after mixing and sheet life after coating and drying, and it may be difficult to distribute them at room temperature (for example, Patent Documents 1 and 2).

Method used

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  • Carboxylic acid group-containing polyester adhesive composition
  • Carboxylic acid group-containing polyester adhesive composition
  • Carboxylic acid group-containing polyester adhesive composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] To 100 parts of solid content of the polyester resin (A-1) containing a carboxylic acid group, 9 parts of YDCN-700-10 (novolac type epoxy resin) manufactured by Nippon Steel Sumikin Chemical Co., Ltd. 0.1 part of TETRAD (registered trademark)-X (N,N,N',N'-tetraepoxypropyl-m-xylylenediamine) manufactured by Mitsubishi Gas Chemical Co., Ltd., adjusted to a solid content concentration of 35 with methyl ethyl ketone %, to obtain the adhesive composition. The obtained adhesive composition was evaluated by the method shown below.

Embodiment 2～13、 comparative example 1～2

[0119] The polyester resin that contains carboxylic acid group, epoxy resin are changed into the material shown in table 3, with the method same as embodiment 1, change into each compounding amount shown in table 3, carry out embodiment 2~13, compare Example 1-2. The results are shown in Table 3.

[0120] (5) Peel strength, solder resistance, sheet life

[0121] (5)-1 Peel strength (adhesiveness)

[0122] The adhesive composition obtained in the example or comparative example was coated on a polyimide film (manufactured by Kaneka Co., Ltd., APICAL (registered trademark)) with a thickness of 12.5 μm so that the thickness after drying became 25 μm. It dried for 5 minutes, and obtained the adhesive film (B stage product). Lay the adhesive layer of the adhesive film in contact with the glossy surface of the 20μm rolled copper foil, at 160°C at 30kgf / cm 2 Press under the pressure for 30 seconds to bond. Then, it was heat-processed at 140 degreeC for 4 hours, it hardened|cured,...

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Abstract

The subject of this application is to provide a polyester adhesive composition containing a carboxylic acid group, which maintains good adhesion to various plastic films, or metals such as copper, aluminum, and stainless steel, and glass epoxy resins, and can cope with Lead-free solder under high humidity is excellent in high humidity and heat resistance, and has excellent sheet life. An adhesive composition is characterized in that it is an adhesive composition comprising a polyester resin (A) containing a carboxylic acid group and a compound (B) having two or more glycidyl groups in the molecule, containing The carboxylic acid-based polyester resin (A) has a glass transition temperature (Tg) of 40-90°C, an acid value of 1-30 mgKOH, and contains a polymer polyol (A1) and is different from the polymer polyol (A1). The polymer polyol (A2) and tetracarboxylic dianhydride are used as copolymerization components.

Description

technical field [0001] The present invention relates to an adhesive composition excellent in adhesion to various plastic films, copper, aluminum, stainless steel and other metals, glass epoxy resin, solder resistance, and sheet life, an adhesive sheet, and an adhesive sheet comprising the same A printed circuit board as a component. Background technique [0002] In recent years, adhesives have been used in various fields. Due to the diversification of the purpose of use, it is necessary to have better adhesion to various plastic films, metals, glass epoxy resins, etc. than the adhesives used in the past. Higher performance such as heat and humidity resistance. For example, adhesives for circuit boards including flexible printed wiring boards (hereinafter sometimes abbreviated as FPC) require adhesiveness, workability, electrical properties, and storage properties. Conventionally, epoxy / acrylic butadiene adhesives, epoxy / polyvinyl butyral adhesives, and the like have been u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J167/00C09J7/25C09J163/00H05K1/03
CPCC09J7/00C09J163/00C09J167/00H05K1/03C09J7/30C09J2301/312C09J2203/326
Inventor 薗田辽伊藤武
Owner TOYOBO CO LTD