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Ultra-low viscosity pressure-sensitive adhesive

A pressure-sensitive adhesive and sticky technology, applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems that there are no reports on the application of ultra-low-viscosity pressure-sensitive adhesives, and the ultra-low-viscosity target cannot be achieved. To achieve the effect of smooth surface

Active Publication Date: 2014-09-03
无锡达美新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the film thickness of the PE substrate is 50um, the amount of dry glue applied is 2.0-3.0g / m 2 , its peel strength is usually 8-10g / 25mm, but the ultra-low viscosity target of 3-5g / 25mm cannot be achieved
[0006] There are many patents and other documents about pressure-sensitive adhesives, such as US patents US7862888, US7056413, US6608143, US5696199, and Chinese patents CN00819089. Reports on membrane applications

Method used

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  • Ultra-low viscosity pressure-sensitive adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Preparation of ethyl acetate solution of polymethacrylate

[0034] 30.4g butyl acrylate, 79.6g 2-ethylhexyl acrylate, 12.6g dodecyl acrylate, 17.4g ethyl acrylate, 31.6g methyl methacrylate, 3.4g styrene, 105g hydroxyethyl acrylate Esters, 4.48g of benzoyl peroxide were dissolved and mixed evenly for use; 294g of ethyl acetate was added to a 1000ml four-necked reaction flask with a reflux condenser, the temperature was raised to a reflux state, and reflux was maintained, and 25% of the aforementioned mixture was added to the reaction Keep the reaction in the reflux state for 70 minutes in the bottle, and then use the dropping funnel to drop the rest of the aforementioned mixture into the reaction bottle at a constant speed within 180-240 minutes. During the dropping period, the reaction bottle must be kept in a reflux state . After completing the dropwise addition, after continuing the heat preservation and reflux reaction for 70 minutes, add a solution of 63g ethyl...

Embodiment 2

[0044] 1. Preparation of ethyl acetate solution of polymethacrylate

[0045] 30g butyl acrylate, 79.4g 2-ethylhexyl acrylate, 20.2g dodecyl acrylate, 21.6g ethyl acrylate, 110g methyl methacrylate, 65g styrene, 23.8g hydroxyethyl acrylate, 2. Dissolve 24g of benzoyl peroxide and mix evenly for use; add 280g of ethyl acetate into a 1000ml four-necked reaction flask with a reflux condenser, raise the temperature to a reflux state, keep reflux, and add 25% of the aforementioned mixture into the reaction flask , kept in the reflux state for 70 minutes, then used the dropping funnel to add the remaining part of the aforementioned mixture dropwise into the reaction flask at a constant speed within 180-240 minutes, and the reaction flask must be kept in the reflux state during the dropwise addition. After the dropwise addition was completed, continue the insulation reflux reaction for 70 minutes, add a solution of 35g ethyl acetate and 0.28g benzoyl peroxide in the reaction flask, an...

Embodiment 3

[0055] 1. Preparation of ethyl acetate solution of polymethacrylate

[0056] 93.2g butyl acrylate, 158.4g 2-ethylhexyl acrylate, 49.4g dodecyl acrylate, 31.6g methyl methacrylate, 3.4g styrene, 3.5g hydroxyethyl acrylate, 0.28g over Benzoyl oxide is dissolved and mixed evenly for use; 288g of ethyl acetate is added to a 1000ml four-necked reaction flask with a reflux condenser, the temperature is raised to a reflux state, and the reflux is maintained. 25% of the aforementioned mixture is added to the reaction flask and kept at React under reflux for 70 minutes, and then use the dropping funnel to drop the rest of the aforementioned mixture into the reaction flask at a constant speed within 180-240 minutes. During the dropwise addition, the reaction flask must be kept in a reflux state. After the dropwise addition was completed, continue the insulation reflux reaction for 70 minutes, add a solution of 36g ethyl acetate and 0.035g benzoyl peroxide in the reaction flask, and then...

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PUM

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Abstract

The invention discloses an ultra-low viscosity pressure-sensitive adhesive, comprising the following constituents in parts by weight: 25-31 parts of ethyl acetate solution of polymethacrylate, 0.5-1.6 parts of cross-linking agent, 0.03-1.1 parts of functional macromolecule, 0.001-0.04 parts of catalyst and 67-72 parts of ethyl acetate. The ultra-low viscosity pressure-sensitive adhesive disclosed by the invention has good adhesive force to a polyethylene film, and can realize 3-5g / 25mm of ultra-low viscosity, and PE (polyethylene) protective film prepared from the pressure-sensitive adhesive have good self-lubricating property to smooth surfaces such as PET (poly(ethylene terephthalate)), PC (polycarbonate), glass and the like.

Description

technical field [0001] The invention relates to an ultra-low-viscosity pressure-sensitive adhesive and a preparation method thereof, in particular to an ultra-low-viscosity pressure-sensitive adhesive for polyethylene (PE) electronic protection film and a preparation method thereof. Background technique [0002] Pressure-sensitive adhesive is a kind of viscoelastic body with liquid viscous properties and solid elastic properties at the same time. Academic definition of glue. [0003] Based on the characteristics of pressure-sensitive adhesives, it is generally not used directly for bonding between two objects, but is made of pressure-sensitive adhesive products by coating them on various substrates, such as sealing tape, office use Adhesive tapes, electrical tapes, foam tapes as well as surface protection and specialty adhesive tapes. [0004] Surface protection adhesive tape is a type of product that has developed very rapidly in recent years. From the perspective of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/14C09J133/12C09J133/08C09J7/02C08F220/28C08F220/14C08F220/18
Inventor 陈伯华王洪张刚
Owner 无锡达美新材料有限公司
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