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Accelerator for curing epoxy resins comprising alkylated amines

An epoxy resin and alkyl technology, applied in the field of accelerators, can solve problems such as unsatisfactory curing speed, and achieve the effects of low yellowing tendency, good workability and high surface quality

Pending Publication Date: 2021-04-16
SIKA TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, especially at low temperatures, the cure rate in the first 24 hours is still not satisfactory

Method used

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  • Accelerator for curing epoxy resins comprising alkylated amines
  • Accelerator for curing epoxy resins comprising alkylated amines
  • Accelerator for curing epoxy resins comprising alkylated amines

Examples

Experimental program
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Embodiment 1 to 17

[0184] For each example, the centrifugal mixer (SpeedMixer TM DAC 150, FlackTek Inc.) was mixed with the curing agent components of the ingredients specified in Tables 1 to 3 in the specified amounts (parts by weight) and stored with the exclusion of moisture.

[0185] Use in the amounts (parts by weight) specified in Tables 1 to 3 - 264N Component A (blue) (from Sika) as resin component.

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Abstract

The present invention relates to a composition containing calcium nitrate, at least one epoxy resin and at least one amine of formula (I). The inventive composition allows the manufacture of low-emission epoxy-resin coatings that have good workability and that cure particularly rapidly in cold and damp conditions, without blushing-induced surface defects, thus achieving coatings of in particular high mechanical quality, with a minimal tendency to yellowing.

Description

technical field [0001] The field to which the present invention relates is that of accelerators for epoxy resin compositions and their use, in particular as coatings. Background technique [0002] Coatings based on epoxy resins are widely used in civil engineering. It consists of a liquid resin component and a hardener component that are mixed prior to application and then cured at ambient temperatures in the range of about 5 to 35°C to form a high strength and stable Material. This epoxy coating is prone to surface imperfections such as cloudiness, spots, roughness, or stickiness, also known as "haze." Haze is due to the amine contained in the curing agent component and the carbon dioxide (CO2) in the air 2 ) caused by the formation of salt, especially at high air humidity and low temperature. Especially in aesthetically demanding paint applications such as floor coverings, the appearance of haze-related surface defects is extremely detrimental and often requires labori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/50C08G59/68C09D163/00
CPCC08G59/5006C08G59/5033C08G59/686C09D163/00C08K3/28C08K2003/287
Inventor E·卡瑟米A·克拉米尔U·斯塔德尔曼U·布尔克哈德特
Owner SIKA TECH AG
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