Two-part curable composition

A curable composition, two-component technology, applied in the direction of non-polymer organic compound adhesives, adhesives, etc., can solve the problem of no flexibility of the cured product, poor resistance to cold and heat cycles, damage to the flexibility of the adherend, etc. question

Active Publication Date: 2017-08-29
TOAGOSEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its cured product generally has no flexibility and is hard and brittle. Therefore, when bonding a soft adherend, there is a problem that the flexibility of the adherend is impaired.
In addition, this curable composition has excellent shear adhesive strength, but conversely, there is a problem that the peel adhesive strength and impact adhesive strength are lowered, and in particular, the resistance to cold and heat cycles between different types of adherends is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0167] The present invention will be explained more specifically based on examples, but the present invention is not limited to these. In addition, in the following, part and% are the basis of mass unless otherwise specified.

[0168] 1. Evaluation method

[0169] (1) Molecular weight

[0170] Device: Alliance 2695 (manufactured by Waters)

[0171] Column: TSKgel SuperMultiporeHZ-H, 2; TSKgel SuperHZ-2500, 2 connected (manufactured by Tosoh Corporation)

[0172] Column temperature: 40℃

[0173] Eluent: tetrahydrofuran 0.35ml / min

[0174] Detector: RI

[0175] The molecular weight measured by GPC is converted based on the molecular weight of polystyrene.

[0176] (2) Bonding speed

[0177] According to JIS K6861 "Test Method for α-Cyanoacrylate Adhesives", the bonding speed was measured in an environment of 23° C. and 60% RH. The test pieces used are as follows.

[0178] Test piece: ABS resin made by Ube Secon Corporation, trade name "GSE"

[0179] (3) Resistance to cold and heat cycles

[018...

Synthetic example 1

[0192] Synthesis Example 1 (Methyl tri-n-octyl ammonium trifluoromethanesulfonate)

[0193] A 50ml eggplant-shaped flask was charged with 4.041 g (10.00 mmol) of methyl tri-n-octyl ammonium chloride (reagent), anion exchange resin (manufactured by Orgino, trade name "Anbillite IRA900A OH AG", strong base type) 13.2 g (20 mg equivalent), 25 ml of toluene, and stirring at room temperature for 48 hours. After filtering out the ion exchange resin, 1.501 g (10.00 mmol) of trifluoromethanesulfonic acid was dropped under ice cooling. The ice bath was removed, and stirring was continued for another 12 hours at room temperature. It was washed 3 times with 25 ml of ion-exchanged water, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The obtained residue was dissolved in 25 ml of methanol, and the insoluble matter was filtered out. The solvent was distilled off under reduced pressure to obtain 5.022 g of a pale yellow semi-solid ( Salt A).

Synthetic example 2

[0194] Synthesis Example 2 (4-methyl-1-octylpyridine bromide )

[0195] A 30 ml eggplant-shaped flask was charged with 9.313 g (0.100 mol) of 4-picoline (reagent), 19.312 g (0.100 mol) of octyl bromide (reagent), and 10 ml of acetonitrile, and stirred at 80°C for 24 hours. The solvent was distilled off under reduced pressure and dried to obtain 4-methyl-1-octylpyridine bromide as a colorless liquid 26.311g.

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Abstract

The invention provides a two-part curable composition which has excellent curability and can exert flexibility and bonding durability. A two-part curable composition comprising a first preparation containing at least a 2-cyanoacrylate ester and a second preparation containing at least a polymer having a hydrolysable silyl group, wherein each of an elastomer and a curing catalyst for the polymer is contained in a specified amount in the first preparation and / or the second preparation. Preferred examples of the curing catalyst include a compound having a metal element and an organic group capable of binding to the metal element through an oxygen atom or an acid having a pKa value of 4 or less at 25 DEG C. It is preferred that a curing accelerator for the 2-cyanoacrylate ester is additionally contained in the first preparation and / or the second preparation.

Description

Technical field [0001] The present invention relates to a two-component curable composition. More specifically, it relates to a two-component curable composition comprising a first agent containing at least a 2-cyanoacrylate and a second agent containing at least a polymer having a hydrolyzable silyl group. Background technique [0002] The curable composition containing 2-cyanoacrylate is due to the specific anionic polymerizability of 2-cyanoacrylate as the main component, and weak anions such as a trace amount of moisture attached to the surface of the adherend. Initiation of polymerization enables strong bonding of various materials in a short time. Therefore, as a so-called instant adhesive, it can be used in a wide range of fields such as industrial use, medical use, and household use. However, the cured product generally has no flexibility, and is hard and brittle. Therefore, in the case of bonding a soft adherend, there is a problem that the flexibility of the adherend ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/44C08K5/057C08K5/315C08L101/10C08L101/12
CPCC08F2/44C08L101/10C09J4/06C08K5/5425C08F222/328C08F222/322C08F255/06C08F283/06C08K5/057C08K5/315C08K5/42C08L101/12C09J201/00
Inventor 石崎谦一安藤裕史
Owner TOAGOSEI CO LTD
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