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Thickening agent, thickening agent composition and preparation method of thickening agent

A tackifier and mixture technology, applied in the directions of polymer adhesive additives, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of low universality and increase the cost of encapsulant

Active Publication Date: 2018-05-04
东莞市贝特利新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the encapsulation adhesives using tackifiers have low universality for bonding materials, resulting in the use of targeted encapsulation adhesives for each material, which increases the cost of using encapsulation adhesives

Method used

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  • Thickening agent, thickening agent composition and preparation method of thickening agent
  • Thickening agent, thickening agent composition and preparation method of thickening agent
  • Thickening agent, thickening agent composition and preparation method of thickening agent

Examples

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preparation example Construction

[0043] The preparation method of above-mentioned tackifier comprises the steps:

[0044] Provide organohydrogensiloxane oligomers, olefins containing epoxy groups, allyl esters, catalysts, first solvents and second solvents;

[0045] mixing an organohydrogensiloxane oligomer with a first solvent to obtain a first mixture;

[0046] Mixing the epoxy group-containing olefin, allyl ester, catalyst and second solvent to obtain a second mixture;

[0047] The first mixture and the second mixture are mixed and reacted at 40°C-100°C for 2h-5h to obtain a colorless transparent or colorless translucent tackifier; the reaction temperature is preferably 50°C-90°C. In order to control the reaction rate, the mixing method of the first mixture and the second mixture is preferably dropwise mixing.

[0048] The above-mentioned tackifiers are, for example, the following structures:

[0049]

[0050]

[0051] The above a, b, c are all greater than or equal to 1, and 10≤a+b+c≤60.

[0052...

Embodiment 1

[0064] The present embodiment provides a kind of tackifier, structural formula is as follows:

[0065]

[0066] The preparation method of the above-mentioned thickening agent is: in the 500mL four-necked flask that reflux condenser, thermometer, dropping funnel and mechanical stirrer are housed, toluene 94.18g and organohydrogensiloxane oligomer (117.72g, 0.06 mol), heated to 80°C, added dropwise allyl glycidyl ether (61.56g, 0.54mol), allyl propionate (41.04g, 0.36mol), Karstedt catalyst (0.88g, concentration 0.25%) within 30min After the dropwise addition of the mixture with toluene (82.08g), it was reacted at 80°C for 3 hours at a constant temperature to obtain a reaction product. The reaction product was stirred and cooled to room temperature, added activated carbon (61.6g) baked at 150°C for 3h, stirred for 3h, and filtered; then the resulting material was desolventized at 120°C and a vacuum of 40mmHg to obtain 161.94g of Color transparent tackifier. The structure of...

Embodiment 2

[0069] The present embodiment provides a kind of tackifier, structural formula is as follows:

[0070]

[0071] The preparation method of above-mentioned viscosifier is: in the 1L four-necked flask that reflux condenser, thermometer, dropping funnel and mechanical stirrer are housed, toluene (244.2g) and organohydrogensiloxane oligomer (244.2g , 0.1mol), heated to 75°C, added dropwise glycidyl acrylate (64g, 0.5mol), allyl butyrate (64g, 0.5mol), Karstedt catalyst (0.6g, concentration 0.5%) and toluene in 40min (128g) of the mixture, after the dropwise addition was completed, it was reacted at a constant temperature at 75° C. for 4 hours to obtain a reaction product. The reaction product was stirred and cooled to room temperature, and activated carbon (48g) baked at 140°C for 3h was added, stirred for 6h, and filtered; then the resulting material was desolventized at 140°C and a vacuum of 30mmHg to obtain 279.9g of colorless Transparent tackifier. The structure of organoh...

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Abstract

The invention discloses a thickening agent, a thickening agent composition and a preparation method of the thickening agent. The structural formula of the thickening agent is shown in the description,wherein R1 represents methyl, ethyl and phenyl; R2 represents hydrogen; R3 represents allyl glycidyl ether, glycidyl acrylate or 3-allyl-7-oxabicyclo[4.1.0]heptan; and R4 represents one of allyl propionate, allyl butyrate, allyl valerate, allyl isovalerate, allyl heptanoate, allyl octanoate, allyl phthalate; and a is more than or equal to 1, b is more than or equal to 1, c is more than or equal to 1, and the sum of a, b and c is more than or equal to 10 and less than or equal to 60. The composition contains the thickening agent and a metal coupling agent. According to the thickening agent composition, an encapsulation adhesive has relatively wide universality to the adhesion of different bracket materials, and the use cost of the encapsulation adhesive is lowered; and the mechanical performance, operation performance, storage performance and stability of the encapsulation adhesive are not influenced.

Description

technical field [0001] The invention relates to the technical field of packaging adhesives, in particular to a tackifier, a tackifier composition and a preparation method for the tackifier. Background technique [0002] Addition-type liquid silicone rubber has the characteristics of no by-products in the vulcanization process, extremely low shrinkage, and deep vulcanization. In recent years, it has been rapidly popularized and applied with the development of the LED industry. However, the addition-type liquid silicone rubber is highly saturated after curing, and its surface energy is low. In practical applications, the addition-type silicone LED liquid encapsulation glue is not firmly bonded to the package bracket, and the moisture in the air invades through the bonding interface. , there is a problem of poor airtightness. [0003] At present, in order to improve the bonding reliability of the LED liquid encapsulant to the package bracket, there are three main methods: one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J11/08C09J11/06C08G77/38C08G77/12
CPCC08G77/12C08G77/38C09J11/06C09J11/08
Inventor 张虎叶文波汤胜山殷永彪王全
Owner 东莞市贝特利新材料有限公司
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