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A kind of adhesive and its preparation method and application

An adhesive and additive technology, applied in the directions of adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of high melt viscosity and narrow dissolution interval, and achieve the effect of simple process route and good fluidity

Active Publication Date: 2020-08-21
苏州瀚海新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, water-based UV adhesives that do not require active diluents have broad application prospects. The only water-dispersed hyperbranched unsaturated polyester uses sulfonate monomers, which have high melt viscosity and narrow dissolution range.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First, carry out the preparation of polyester:

[0029] Put 4kg of pentaerythritol, 161kg of dimethylol propionic acid, 50g of p-toluenesulfonic acid, and 150g of tetrabutyl titanate into the reaction kettle. Replace the exhausted air with nitrogen, stir and raise the temperature to 180-200°C for reaction. After the acid value is less than 10mg KOH / g, cool down to 140-160°C, add 285kg of maleic anhydride and stir for 30min under vacuum, add 183kg of ethylene glycol, raise the temperature to 180-200°C for esterification, and the acid value is less than 10mg After KOH / g, put in 537kg of trimellitic anhydride, cool down to 140-160°C, stir for 30min under vacuum, fill with nitrogen to eliminate the vacuum, and extrude to discharge.

[0030] Gained polyester: intrinsic viscosity I.V. is 0.26, glass transition temperature Tg is 15 degrees, acid value A.V. is 350 mgKOH / g, and hydroxyl value OH.V. is 7 mgKOH / g.

[0031] Next, dissolve the above-prepared polyester mixed trieth...

Embodiment 2

[0033] First, carry out the preparation of polyester:

[0034] Put 6kg of trimethylolpropane, 119kg of dimethylol propionic acid, 45g of p-toluenesulfonic acid, and 100g of tetrabutyl titanate into the reaction kettle. Replace the exhausted air with nitrogen, stir and raise the temperature to 180-200°C for reaction. After the acid value is less than 10mgKOH / g, cool down to 140-160°C, add 285kg of maleic anhydride and stir for 30min under vacuum, add 330kg of hexanediol, raise the temperature to 180-200°C for esterification, the acid value is less than 10mg KOH After / g, put in 551kg of trimellitic anhydride, cool down to 140-160°C, stir for 30min under vacuum, fill with nitrogen to eliminate the vacuum, and extrude to discharge.

[0035] Gained polyester: intrinsic viscosity I.V. is 0.31, glass transition temperature Tg is 5 degrees, acid value A.V. is 280 mgKOH / g, hydroxyl value OH.V. is 3 mgKOH / g.

[0036] Next, dissolve the above-prepared polyester mixed triethylamine in ...

Embodiment 3

[0038] First, carry out the preparation of polyester:

[0039] Put 5.5kg of trimethylolpropane, 214kg of dimethylolacetic acid, 60g of p-toluenesulfonic acid, and 180g of tetrabutyl titanate into the reaction kettle. Replace the exhausted air with nitrogen, stir and raise the temperature to 180-200°C for reaction. After the acid value is less than 10mgKOH / g, cool down to 140-160°C, add 273kg of tetrahydrophthalic anhydride and stir for 30min under vacuum, add 226kg of ethylene glycol, raise the temperature to 180-200°C for esterification reaction, and the acid value is less than 10mg KOH After / g, put in 619kg of pyromellitic dianhydride, lower the temperature to 140-160°C, stir for 30min under vacuum, fill with nitrogen to eliminate the vacuum, and extrude to discharge.

[0040] Gained polyester: intrinsic viscosity I.V. is 0.21, glass transition temperature Tg is 40 degrees, acid value A.V. is 390 mgKOH / g, hydroxyl value OH.V. is 16 mgKOH / g.

[0041]Next, dissolve the abov...

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Abstract

The invention provides an adhesive and a preparation method thereof. The adhesive is prepared from ingredients in content (mass percent): 95 to 98% of aqueous-dispersion hyperbranched unsaturated polyester solution with the solid content of 60%, 0.5 to 1.0% of photoinitiator and the balance of other additives. Intrinsic viscosity of the polyester is 0.1 to 0.4, an acid value is 100 to 400mg KOH / g, a hydroxyl value is 5 to 20mg KOH / g, and glass-transition temperature is -10 to 40 DEG C. According to the preparation method, solvent and purification in a polyester synthesizing process are avoided, the polyester can be synthesized completely through a melting method, a processing route is simple, the unsaturated polyester modified by polybasic carboxylic acid has water dispersibility, the unsaturated polyester also has excellent mechanical property of hyperbranched polyester and high reactivity of UV cured resin when being utilized as an adhesive, the defect that a traditional UV cured adhesive cannot be used without a UV reactive diluent is broken through, and the unsaturated polyester has good fluidity, cleanness and environmental friendliness.

Description

technical field [0001] The invention belongs to the field of polymer synthesis, and in particular relates to a UV adhesive with water-dispersed hyperbranched unsaturated polyester and a preparation method thereof. Background technique [0002] UV light-curable adhesives first appeared in the 1960s, and great achievements have been made in their research. At present, UV light-curable adhesives have been widely used in industrial fields, such as LCD manufacturing, electronic circuit boards, electronic glass and so on. [0003] UV light-curing adhesive has the following advantages: 1. Fast curing speed, which can be cured within a few seconds, greatly improving efficiency; 2. No solvent or a small amount of solvent, reducing volatilization; 3. UV energy consumption is less than thermal curing energy 1 / 10 of energy consumption, reducing energy consumption; 4. The UV light source used does not require forced heating, which is conducive to the application of plastics and other mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J167/06C09J11/06C08G63/91C08G63/60C08G63/553C08G63/52C08G63/78
CPCC08G63/52C08G63/553C08G63/60C08G63/78C08G63/918C09J11/06C09J167/06
Inventor 杜璞黄聪聪黄志远宁珅
Owner 苏州瀚海新材料有限公司
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