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Curable composition

A technology of composition and curing agent, applied in the direction of adhesive type, coating, adhesive, etc.

Inactive Publication Date: 2016-01-20
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid cleaning compositions can be effective, but these often need to be collected and reused or discarded

Method used

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Examples

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example

[0189] Objects and advantages of this invention are further illustrated by the following examples, but the particular materials and amounts thereof recited in these examples, as well as other conditions and details, should not be construed to unduly limit this invention. These examples are for illustrative purposes only, and are not intended to limit the scope of the appended claims.

[0190] Solvents and other reagents used were purchased from Aldrich Chemical Company (Milwaukee, WI) unless otherwise noted.

[0191] Table 2: Glossary of terms used for materials

[0192]

[0193]

[0194]

[0195]

[0196] testing method

[0197] Oil the metal plate

[0198] Oil-coated steel panels (galvanized steel samples used as received) were prepared by applying the specified volume of Zeller-Gmelin KTLN16 oil to the area to be coated using the density data obtained from the material safety data sheet provided by the oil supplier to obtain 3 g / m2 coating. Using the c...

example 1 to 9 and comparative example 1 to 5

[0227] For each sample, the amounts specified in Table 4 of the epoxy resin composition (ER1 to ER12) and the appropriate curing agent (CA1 to CA4) were mixed with 1% by weight glass beads (250 micron in diameter) in a paper cup Mix together.

[0228] Table 4: Examples 1 to 9 and Comparative Examples 1 to 5

[0229]

[0230]

[0231] Bonds were prepared on cleaned or oiled steel samples according to the instructions. Examples 1 to 8 and Comparative Examples 1 to 5 were cured at room temperature for 24 hours and then at 180° C. for 30 minutes. Example 9 was cured at room temperature for 24 hours. Lap shear, T-peel and ISO 11343 average impact peel tests were performed at ambient temperature. Table 5 provides the test results and failure modes exhibited by each instance. In this table, AF refers to adhesive failure, CF refers to cohesive failure, and TCF refers to thin cohesive failure.

[0232] Table 5: Adhesive properties

[0233]

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Abstract

Curable compositions, cured compositions, and articles comprising the cured compositions are described. The curable composition comprises: a) epoxy resin, b) curing agent, c) reactive liquid modifier and d) toughening agent. The cured composition can be used as a structural adhesive. The reactive liquid modifier is an acetoacetate ester of a dimer alcohol. The cured composition can be used as an adhesive or polymer coating such as a structural adhesive.

Description

technical field [0001] Curable compositions, cured compositions, and articles comprising the cured compositions are described. Background technique [0002] Various compositions are applied to substrates that may be contaminated with hydrocarbon-containing substances such as various oils and lubricants. Oil contamination is not uncommon on substrates that are part of a vehicle, such as an automobile. The presence of this oil contamination can inhibit good adhesion of the coating or adhesive to the substrate [0003] It can be difficult to remove hydrocarbon-containing species from the surface of the substrate. Mechanical treatments such as dry wiping and / or using compressed air tend to leave a thin layer of hydrocarbon-containing material on the surface. Liquid cleaning compositions can be effective, but these often require collection and reuse or disposal. Additionally, a drying step is often required after the cleaning step. [0004] Adhesive compositions are known wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/40C08G59/56C08L63/00
CPCC08G59/4007C08G59/56C08L63/00C09D163/00C09J163/00
Inventor C·J·坎贝尔K·M·勒万多夫斯基K·奥乌苏-阿德姆
Owner 3M INNOVATIVE PROPERTIES CO