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Preparation method of ultraviolet-curable organosilicone-modified pressure-sensitive adhesive

A silicone, pressure-sensitive adhesive technology, applied in the direction of adhesives, graft polymer adhesives, adhesive types, etc., can solve problems such as energy waste and environmental pollution

Inactive Publication Date: 2012-06-27
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: a large amount of organic solvents are used in the production process of the traditional silicone pressure-sensitive adhesive, which is easy to cause environmental pollution and energy waste. When using, it needs to be coated at high temperature

Method used

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  • Preparation method of ultraviolet-curable organosilicone-modified pressure-sensitive adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Add 120 grams of biscarboxysilane oil (Dow Corning BY16-201) with a hydroxyl value of 60 into the reactor together with 17 grams of isophorone diisocyanate, add 0.1 grams of dibutyltin dilaurate as a catalyst, and react at 75 ° C for 2.5 hour, add 3.5 g of hydroxyethyl acrylate and 0.3 g of p-hydroxyanisole, continue to react at 75 ° C for 2 hours, then add 30 g of isooctyl acrylate, stir evenly, cool and discharge the prepolymer [1].

[0039] Mix 30 grams of C5 petroleum resin (softening point 90°C) with 4 grams of tetraethylene glycol diacrylate and 20 grams of tetrahydrofuryl acrylate, heat to 40°C, stir to dissolve, add the above prepolymer [1] 100 grams, add 5 grams of 2-hydroxy-methylphenylpropan-1-one as a photoinitiator, mix to maintain the viscosity of the system at 2000mPa.s, evenly apply it on a PET film, and place it under a 2Kw ultraviolet lamp for 15 cm Cured for 50 seconds.

Embodiment 2

[0041] 150 grams of biscarboxysilane oil (Shin-Etsu KF6002) with a hydroxyl value of 35 and 15.6 grams of isophorone diisocyanate were added to the reactor, and 0.2 grams of dibutyltin dilaurate was added as a catalyst, and reacted at 75 ° C for 2.5 hours. Add 6.2 g of hydroxyethyl acrylate and 0.3 g of p-hydroxyanisole, continue to react at 75°C for 2 hours, then add 30 g of isooctyl acrylate, stir evenly, cool and discharge to form a prepolymer [2].

[0042]Mix 30 grams of C5 petroleum resin (softening point 90°C) with 4 grams of tetraethylene glycol diacrylate and 20 grams of tetrahydrofuryl acrylate, heat to 40°C, stir to dissolve, add the above prepolymer [2] 100 grams, add 5 grams of 2-hydroxy-methylphenylpropan-1-one as a photoinitiator, mix to maintain the viscosity of the system at 3000mPa.s, evenly apply it on a PET film, and place it under a 2Kw ultraviolet lamp for 15 cm Cured for 50 seconds.

Embodiment 3

[0044] Add 160 grams of biscarboxysilane oil (Shin-Etsu KF6003) with a hydroxyl value of 22 into the reactor together with 12.6 grams of isophorone diisocyanate, add 0.2 grams of dibutyltin dilaurate as a catalyst, and react at 75 ° C for 2.5 hours, Add 6.7 g of hydroxyethyl acrylate and 0.3 g of p-hydroxyanisole, continue to react at 75°C for 2 hours, then add 30 g of isooctyl acrylate, stir evenly, cool and discharge to form a prepolymer [3].

[0045] Mix 30 grams of C5 petroleum resin (softening point 90°C) with 4 grams of tetraethylene glycol diacrylate and 20 grams of tetrahydrofuryl acrylate, heat to 40°C, stir to dissolve, add the above prepolymer[3] 100 grams, add 5 grams of 2-hydroxy-methylphenylpropan-1-one as a photoinitiator, mix to maintain the viscosity of the system at 4000mPa.s, evenly apply it on a PET film, and place it under a 2Kw ultraviolet lamp for 15 cm Cured for 50 seconds.

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Abstract

The invention relates to a preparation method of a pressure-sensitive adhesive, and particularly relates to a preparation method of a solvent-free ultraviolet-curable organosilicone-modified pressure-sensitive adhesive. The method comprises the steps of: preparation of an organosilicone-modified polyurethane acrylate prepolymer and preparation of the pressure-sensitive adhesive. The pressure-sensitive adhesive is free of any organic solvents, and can be coated at normal temperature, dried without heating and rapidly cross-linked and cured.

Description

technical field [0001] The invention relates to a silicone pressure-sensitive adhesive and a preparation method thereof, in particular to a solvent-free UV-cured silicone-modified pressure-sensitive adhesive. Background technique [0002] Silicone pressure-sensitive adhesives are a kind of high-quality special pressure-sensitive adhesives in pressure-sensitive adhesives. The current silicone pressure-sensitive adhesives, such as silanol condensation type silicone pressure-sensitive adhesives, are suitable for silicone pressure-sensitive adhesives used under high temperature and harsh conditions. glue system. This pressure-sensitive adhesive is usually composed of silicone rubber, MQ silicone resin, organic solvents and other additives. The organic solvent used is generally toluene or xylene, and a large amount of volatile organic compounds (VOC) are excluded during the coating process. These substances not only cause serious environmental pollution, but also pose a threat ...

Claims

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Application Information

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IPC IPC(8): C09J151/08C08G18/61
Inventor 崔亨利王建斌陈田安
Owner YANTAI DARBOND TECH
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