Polyether polyurethane-acrylate and preparation method thereof

A technology of urethane acrylate and hydroxypropyl acrylate, which is applied in the field of urethane acrylate and its preparation, can solve problems such as polymerization, difficult temperature control, cumbersome feeding, etc., and achieve excellent chemical resistance, low cost, and good adhesion Effect

Inactive Publication Date: 2009-12-23
上海展辰涂料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Shi Zhiqiang and Ji Ningning published "Synthesis and Properties of Ultraviolet Curing Polyurethane Acrylate Resin" in Volume 14, Issue 5, 2007, and published in Volume 32, Issue 3, 2007 "Resea

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] formula:

[0026] Polyether polyol (molecular weight is 1000) 55kg

[0027] Toluene diisocyanate (TDI) 25kg

[0028] Hydroxypropyl Acrylate 20kg

[0029] Triethylamine 0.5kg

[0030] p-Hydroxyanisole 0.8kg

[0031] Tripropylene glycol diacrylate 15kg

[0032] Nitrobenzene 0.015kg

[0033] Absolute ethanol 6kg

[0034] TMPTA 20kg

[0035] Synthesis:

[0036] Accurately measure polyether polyol and toluene diisocyanate into a reactor equipped with stirring and a thermometer. Raise the temperature of the material to 50°C through heating equipment, stop heating, and heat up to 70°C. Keep the temperature for 2 hours. Sampling for NCO, NCO Less than 4.5%. After the NCO is qualified, accurately measure and add hydroxypropyl acrylate, triethylamine, p-hydroxyanisole and nitrobenzene to the reactor in turn, heat the material to 80°C, and detect NCO every hour, and the NCO is less than Add 0.5% measured absolute ethanol to react for 30 minutes, cool the material to 80° C...

Embodiment 2

[0046] formula:

[0047] Polyether polyol 50kg

[0048] Toluene diisocyanate (TDI) 20kg

[0049] Hydroxyethyl Acrylate 25kg

[0050] Dibutyltin dilaurate 0.5kg

[0051] 2.6-di-tert-butyl-p-cresol 0.8kg

[0052] Tripropylene glycol diacrylate 15kg

[0053] Nitrobenzene 0.015kg

[0054] Absolute ethanol 6kg

[0055] TMPTA 20kg

[0056] The molecular weight of polyether polyol is 1000

[0057] Synthesis:

[0058] Accurately measure polyether polyol and toluene diisocyanate into a reactor equipped with stirring and a thermometer. Raise the temperature of the material to 60°C through heating equipment, stop heating, and heat up to 70°C. Keep the temperature for 2 hours. Sampling for NCO, NCO Less than 4.5%. After the NCO is qualified, add hydroxyethyl acrylate, dibutyltin dilaurate, 2,6-di-tert-butyl p-cresol, and nitrobenzene into the reactor accurately. Add a small amount of nitrobenzene It can prevent weather gelation. Heat the material to 90°C and keep it warm. Detect...

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PUM

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Abstract

The invention provides polyether polyurethane-acrylate and a preparation method thereof. The polyether polyurethane-acrylate comprises the following compositions in portion by weight: 40 to 60 portions of polyether glycol, 10 to 30 portions of polyisocyanates, 10 to 30 portions of hydroxypropyl acrylate or hydroxy-ethyl acrylate, 0.1 to 0.5 portion of triethylamine or dibutyltin dilaurate, 5 to 10 portions of absolute ethanol, 0.1 to 0.8 portion of p-hydroxyanisole or 2.6- di-tert-butyl-4-methylphenol, 5 to 20 portions of tripropylene glycol diacrylate, 5 to 20 portions of TMPTA, and 0.01 to 0.02 portion of nitrobenzene. The invention has excellent mechanical abrasion resistance and toughness, high elongation at break, excellent chemical resistance and high temperature resistance when coating a film, has low temperature performance and good adhesive force. The polyether polyurethane-acrylate has better using effect when assembling epoxy acrylate, and is the polyurethane acrylate with lowest cost.

Description

technical field [0001] The invention relates to a polyurethane acrylate and a preparation method thereof. Background technique [0002] Among ultraviolet (UV) cured oligomers, urethane acrylates are the second type of photocurables after epoxy acrylates. This is mainly due to the synthetic flexibility, flexibility, hardness, and curing properties of urethane acrylates. Speed ​​etc. can be designed and controlled in advance. For example, Shi Zhiqiang and Ji Ningning published "Synthesis and Properties of Ultraviolet Curing Polyurethane Acrylate Resin" in <Chemical Production and Technology> Volume 14, Issue 5, 2007, and "Guangzhou Chemistry" in Volume 32, Issue 3, 2007 "Research and Development of Ultraviolet Curing Polyurethane Acrylic Resin", using the technology reported in the above literature, there are cumbersome feeding, difficult temperature control, and easy polymerization. Contents of the invention [0003] The purpose of the present invention is to provid...

Claims

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Application Information

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IPC IPC(8): C08G18/65C08G18/48C08G18/24C08G18/74C09D175/14
Inventor 叶荣森关存洲
Owner 上海展辰涂料有限公司
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