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Ultraviolet light cured non-silicon release agent and preparation method thereof

A non-silicon release and ultraviolet light technology, applied in the direction of coating, etc., can solve the problems of high curing temperature, slow reaction speed, long curing time, etc.

Active Publication Date: 2015-02-04
KUNSHAN BYE MACROMOLECULE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the slow reaction rate of isocyanate crosslinking reaction, higher curing temperature and longer curing time are required to obtain stable release properties; the crosslinking functional groups of acrylate copolymers may be carboxyl, hydroxyl, and amide groups Polar groups, these polar groups may lead to higher release force
In addition, due to the presence of isocyanate groups, it may cause the acrylic pressure-sensitive adhesive to bond with the release material and cannot be separated
This phenomenon is more pronounced at high temperatures; prior art has not solved such a problem

Method used

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  • Ultraviolet light cured non-silicon release agent and preparation method thereof
  • Ultraviolet light cured non-silicon release agent and preparation method thereof

Examples

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preparation example Construction

[0028] A preparation method of UV-curable non-silicon release agent, comprising the steps of:

[0029] Step 1: Synthesis of vinyl ether functionalized acrylic resin; Step 2: Adding 10 to 30 parts of dodecyl vinyl ether and 10 to 20 parts of three Ethylene glycol divinyl ether; Step 3: After stirring evenly, add 1 to 3 parts of photoinitiator, and stir evenly to obtain a UV-curable non-silicon release agent; the above photoinitiator includes: 50% triaryl hexafluoroantimonic acid Sulfonium salt and 50% propylene carbonate solution. Step 4: Coating the above-mentioned UV-curable non-silicon release agent on the film, and placing it under a UV lamp for radiation curing.

[0030] The method for synthesizing vinyl ether functionalized acrylate resin in step 1 comprises the steps:

[0031] Step a: Mix 30-70 parts of stearyl acrylate, 30-70 parts of n-butyl acrylate, and 5-20 parts of acrylic acid to form 100 parts of acrylate monomer mixture; Step b: Take 30 parts of the above-ment...

Embodiment 1

[0043]With 40g stearyl acrylate, 50g n-butyl acrylate, 10g acrylic acid; Mix the mixture of 100g acrylate monomer, get 30g of it and 100g toluene and 0.3g BPO after mixing and join in the reactor, in After reacting at 80-90°C for half an hour, add the remaining monomer mixture dropwise, and continue the reaction for 2 hours after the drop is completed within 3 hours. In 200g appeal polymer, add 0.2g polymerization inhibitor, 1g concentrated sulfuric acid, add 20g 4-hydroxybutyl vinyl ether, heat to reflux, utilize water separator to remove the water that reaction generates, after reaction finishes, use sodium bicarbonate After neutralization, extract and remove the solvent under reduced pressure to obtain a vinyl ether functionalized acrylate resin.

[0044] Get gained prepolymer 70g and 20g n-dodecyl vinyl ether, 10g triethylene glycol divinyl ether, add the photoinitiator mixed type triaryl hexafluoroantimonate sulfonium salt of 2g (50% propylene carbonate solution), mixed ...

Embodiment 2

[0047] With 60g octadecyl acrylate, 20g n-butyl acrylate, 20g acrylic acid; Mix the mixture of 100g of acrylate monomer, get 30g of it and 100g of toluene and 0.3g of BPO to mix and then join in the reactor. After reacting at 80-90°C for half an hour, add the remaining monomer mixture dropwise, and continue the reaction for 2 hours after the drop is completed within 3 hours. In 200g appeal polymer, add 0.2g polymerization inhibitor, 1g concentrated sulfuric acid, add 35g 4-hydroxybutyl vinyl ether, heat to reflux, utilize water trap to remove the water that reaction generates, after reaction finishes, use sodium bicarbonate After neutralization, extract and remove the solvent under reduced pressure to obtain a vinyl ether functionalized acrylate resin.

[0048] Get gained prepolymer 70g and 20g n-dodecyl vinyl ether, 10g triethylene glycol divinyl ether, add the photoinitiator mixed type triaryl hexafluoroantimonate sulfonium salt of 2g (50% propylene carbonate solution), mix...

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Abstract

The invention discloses an ultraviolet light cured non-silicon release agent, which is composed of the following components in parts by weight: 50 to 80 parts of vinyl ether functionalized acrylic resin, 10 to 30 parts of dodecyl vinyl ether, 10 to 20 parts of triethyleneglycol divinyl ether, and 1 to 3 parts of photoinitiator. The preparation method comprises the following steps: step one, synthesizing vinyl ether functionalized acrylic resin; step two, adding 10 to 30 parts of dodecyl vinyl ether and 10 to 20 parts of triethyleneglycol divinyl ether into the 50-80 parts of vinyl ether functionalized acrylic prepolymer; step three, stirring and evenly mixing, then adding 1 to 3 parts of photoinitiator, stirring and evenly mixing so as to obtain ultraviolet light cured non-silicon release agent; step four, painting the obtained ultraviolet light cured non-silicon release agent on a film, and carrying out radiation curing by placing the film under an ultraviolet lamp. The invention aims to provide a non-mobility solvent-free ultraviolet light cured non-silicon release agent with a stable releasing performance and a preparation method thereof.

Description

technical field [0001] A release agent and a preparation method thereof, in particular a UV-curable non-silicon release agent and a preparation method thereof. Background technique [0002] Release agent, that is, to facilitate the unwinding and unfolding of pressure-sensitive adhesive tapes or pressure-sensitive adhesive labels, and to protect the pressure-sensitive adhesive surface at the same time as a curable film-forming material. Based on the anti-adhesive properties of release agents, release agents are widely used in pressure-sensitive adhesive labels and tapes, food, medical and health industries; release agents are roughly divided into silicone release agents and non-silane release agents. In the production of release paper, the most commonly used release agent is silicone release agent. It is widely used because of its low surface tension, good isolation effect and wide release force range. However, silicone release liners can easily transfer to the adhesive sur...

Claims

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Application Information

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IPC IPC(8): C08F265/04C08F216/18C08F216/12C08F2/48C08F220/68C08F220/18C08F220/06C08F2/40C09D151/00C09D5/20
Inventor 喻四海施法宽童建宇
Owner KUNSHAN BYE MACROMOLECULE MATERIAL CO LTD
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