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Adhesive primer composition and preparation method thereof

A primer and adhesion technology, which is applied in the direction of surface pretreatment bonding method, coating, polyurea/polyurethane coating, etc., can solve the problem of easy degumming, poor adhesion, and inability to achieve glass light blocking effect and other issues, to achieve a good light blocking effect

Active Publication Date: 2022-06-24
拓迪化学(上海)股份有限公司
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Problems solved by technology

[0003] At present, the common primer is a three-component combination (curing agent, main resin, catalyst and filler), but the adhesion is not good, and it is easy to degumming and other phenomena, and the color can only be transparent or white, which cannot be achieved. The blocking effect of glass

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  • Adhesive primer composition and preparation method thereof
  • Adhesive primer composition and preparation method thereof
  • Adhesive primer composition and preparation method thereof

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preparation example Construction

[0032] The embodiments of the present application also provide a method for preparing an adhesive primer, in which the reagents used in the method are all industrial-grade reagents, and the method includes the following steps:

[0033] Step 1: Prepare component A, mix the polyhydroxy compound containing the polyolefin structure and the modified graphite oxide in a preset ratio, and the weight of the modified graphite oxide is 0.5%-5% of the weight of the polyhydroxy compound.

[0034]Step 2: Prepare component B, first react soybean oil polyol with isocyanate, and then react with hydrogenated bisphenol A in a preset weight ratio to obtain a soybean oil polyol added with hydrogenated bisphenol A, and then react isocyanate with hydrogenated bisphenol A. The soybean oil polyol added by A continues to react, and the viscosity of the reactant is monitored. When the viscosity does not continue to increase, a modified product of soybean oil polyol is obtained.

[0035] When component ...

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Abstract

The invention provides an adhesive primer composition and a preparation method thereof, which belong to the field of adhesives. The adhesive primer composition includes A component and B component, wherein, A component includes poly Polyol compound of olefin structure and modified graphite oxide, the hydroxyl content in the polyol compound is greater than 3%, and the hydroxyl group in the polyol compound is obtained by ester hydrolysis; component B is modified soybean oil polyol The product, the soybean oil polyol modified product is to react soybean oil polyol with isocyanate first, and then react with hydrogenated bisphenol A of preset weight ratio to obtain hydrogenated bisphenol A added soybean oil polyol, and then isocyanate Obtained by continuous reaction of soybean oil polyol added with hydrogenated bisphenol A. Through the treatment scheme of the present application, the adhesion between TPE and glass is improved and has a light-shielding effect.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to an adhesive primer composition and a preparation method thereof. Background technique [0002] To improve adhesion on synthetic rubbers, especially thermoplastic elastomers, and low surface energy substrates, a number of adhesive primer compositions have been developed. Among them, the definition of low surface energy is that the surface energy difference between the two bonding surfaces is relatively large, such as TPE (thermoplastic elastomer) and glass, the surface energy difference is greater than 20 or more. The reason these substrates are particularly important is that they are found in window panel bonding of vehicles, such as automobiles, and such bonding is a very important bonding application. [0003] At present, the common primer adopts three-component combination (curing agent, main resin, catalyst plus filler), but the adhesion is not good, and it is prone to degumming and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D7/62C08G18/63C08G18/36C09J5/02
CPCC09D175/04C09D7/62C08G18/638C08G18/36C09J5/02C08K9/04C08K3/042
Inventor 闫煦李智鹏方旺胜
Owner 拓迪化学(上海)股份有限公司
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