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Preparation method of UV (ultraviolet) curing agent with high refractive index and product

A technology of refractive index and curing glue, applied in the direction of adhesives, etc., can solve the problems of dependence on imports, restrictions on widespread use, low refractive index, etc., and achieve the effects of good light transmittance, small curing shrinkage, and high refractive index

Active Publication Date: 2019-12-06
杭州得力科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has many advantages, its main defect is generally low refractive index, which also limits its wide use in the field of optical materials. Most of the UV curing assembly adhesives used in China still rely on imports.

Method used

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  • Preparation method of UV (ultraviolet) curing agent with high refractive index and product
  • Preparation method of UV (ultraviolet) curing agent with high refractive index and product
  • Preparation method of UV (ultraviolet) curing agent with high refractive index and product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]Preparation of prepolymer A: In the reactor with condenser and water separator, add 250.00kg polycarbonate diol 500, 519.12kg toluene, 262.92kg dimercapto diphenyl sulfide, 6.20kg 37% hydrochloric acid, start Stirrer, heat until reflux occurs in the reaction system, and maintain the reaction at this temperature; when the reaction reaches the point where most of the theoretical water output is evaporated, stop heating, end the reaction, lower the temperature to 55.0°C, vacuum out and recover the solvent Toluene, and then the material can be discharged when the temperature is lowered to below 40° C. to obtain the mercapto-terminated polycarbonate prepolymer A for future use.

[0043] Preparation of prepolymer B: First, add 101.63kg of allyl isothiocyanate into the reaction kettle, blow nitrogen into it, add 50.2g of hydroquinone, start the stirrer, and heat until the reaction system is at 60-70°C; Then, add 260.0g of dibutyltin dilaurate into 400.00kg of polycarbonate diol...

Embodiment 2

[0048] Preparation of prepolymer A: In the reactor with condenser and water separator, add 400.00kg polycarbonate diol 800, 293.00kg benzene, 275.44kg dimercapto diphenyl sulfide, 37% hydrochloric acid 6.20kg, start Stirrer, heat until reflux occurs in the reaction system, and maintain the reaction at this temperature; when the reaction reaches the point where most of the theoretical water output is evaporated, stop heating, end the reaction, lower the temperature to 55.0°C, vacuum out and recover the solvent benzene, and then the material can be discharged when the temperature is lowered to below 40° C. to obtain the mercapto-terminated polycarbonate prepolymer A for future use.

[0049] Preparation of prepolymer B: First, add 104.11kg of allyl isothiocyanate into the reaction kettle, blow nitrogen into it, add 177.00g of tert-butylcatechol, start the stirrer, and heat until the reaction system is at 60-70°C Then, add 350.00g of stannous octoate into 250.00kg of polycarbonate...

Embodiment 3

[0054] Preparation of prepolymer A: In the reactor with condenser and water separator, add 250.00kg polycarbonate diol 500, 346.00kg benzene, 269.18kg dimercapto diphenyl sulfide, 37% hydrochloric acid 6.10kg, start Stirrer, heat until the reaction system appears reflux, and maintain the reaction at this temperature; when the reaction reaches the point where most of the theoretical water output is evaporated, stop heating, end the reaction, lower the temperature to 55.0°C, vacuum out and recover the solvent benzene, and then the material can be discharged when the temperature is lowered to below 40° C. to obtain the mercapto-terminated polycarbonate prepolymer A for future use.

[0055] Preparation of prepolymer B: First, add 102.87kg of allyl isothiocyanate into the reaction kettle, blow in nitrogen, add 106.00g of p-hydroxyanisole, start the stirrer, and heat the reaction system at 60-70°C ; Then, add 265.00g of dibutyltin dilaurate into 250.00kg of polycarbonate diol 500 an...

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Abstract

The invention discloses a preparation method of a UV (ultraviolet) curing agent with a high refractive index and a product. The preparation method comprises the following steps: firstly, preparing twoprepolymers with high refractive indexes, compounding the precolymers with an active diluent, a polymerization inhibitor and a light sensitive initiator so as to obtain an ultraviolet (UV) curing adhesive product, and performing light initialized free radical polymerization and sulfydryl-alkene clicking reactions, so as to achieve cross-linking curing of an adhesive. The preparation method has the advantages that raw materials are conveniently obtained, the preparation process is simple, and the obtained product can be applied to ultraviolet lighting curing at room temperature and is stable to store, small in curing shrinkage, high in refractive index, good in light permeability, excellent in bonding strength, and the like.

Description

technical field [0001] The invention belongs to the technical field of curing glue design, and in particular relates to a preparation method and product of high refractive index UV curing glue. Background technique [0002] UV curing adhesive, also known as UV curing adhesive, is an adhesive that contains active double bond components and can undergo crosslinking and curing reactions under ultraviolet light. Ultraviolet (UV) curing technology was first used in the 1950s, and the United States first used it in the manufacture of photosensitive resins and printing plates. In 1968, Bayer of Germany developed a combination of unsaturated resins, photopolymerizable monomers, etc. Solvent-free light-curing coatings, followed by light-curing adhesives in Europe. Compared with developed countries, the development of UV curing technology and products in my country is relatively late, starting in the early 1970s, but the development is the fastest, with an average growth rate of more...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J169/00C08G64/42
CPCC08G64/42C09J169/00C08L69/00
Inventor 沈良边榕梅王杰
Owner 杭州得力科技股份有限公司
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