A kind of emulsion type bio-based water-based photocurable resin and its preparation method and application

A light-curing resin, bio-based technology, used in non-polymer organic compound adhesives, coatings, adhesives, etc., can solve the problems of difficult preparation of prepolymers, toxicity and irritation, VOC and other problems, and achieve renewable The effect of high carbon content, no interference from oxygen inhibition, and low volume shrinkage

Active Publication Date: 2022-05-13
江苏富琪森新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These reactive diluents are volatile and cause VOC, and also have varying degrees of toxicity and irritation
This problem is even more serious in the mercapto-ene curing system. On the one hand, it is difficult to prepare mercapto-containing prepolymers, and commercially available small molecule polythiols have a strong odor.

Method used

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  • A kind of emulsion type bio-based water-based photocurable resin and its preparation method and application
  • A kind of emulsion type bio-based water-based photocurable resin and its preparation method and application
  • A kind of emulsion type bio-based water-based photocurable resin and its preparation method and application

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preparation example Construction

[0052] The invention provides a method for preparing an emulsion-type bio-based water-based photocurable resin, comprising the following steps:

[0053] (1) Mix the modified polythiol, modified polyolefin, and co-stabilizer to obtain the oil phase; mix the emulsifier and water to obtain the water phase; The following reaction obtains an excessive prepolymer emulsion containing mercapto groups;

[0054] (2) Mix the modified polythiol, modified polyolefin, and co-stabilizer to obtain the oil phase; mix the emulsifier and water to obtain the water phase; mix the oil phase, the water phase, and the photoinitiator in the UV lamp The following reaction obtains an excessive prepolymer emulsion containing double bonds;

[0055] (3) Mix the obtained prepolymer emulsion containing excessive mercapto groups and the prepolymer emulsion containing excessive double bonds to obtain a photocurable resin.

[0056] In the present invention, in step (1) and step (2), the intensity of the ultra...

Embodiment 1

[0062] Synthesis of isosorbide-based dihydric mercaptan monomer (IMASH): get 29.23g of isosorbide and 50.95g of 3-mercaptopropionic acid monomer and add it to a 250ml three-necked flask with water separator and condenser, weigh 4.1 g p-toluenesulfonic acid as a catalyst, 100ml of toluene as a solvent, heat up the oil bath until the temperature in the reactor is 110°C, stop the reaction after 8 hours, add anhydrous sodium carbonate to the product, overnight, filter and wash with saturated saline 3 times, added anhydrous magnesium sulfate to dry, filtered and then rotary evaporated to obtain isosorbide-based dihydric mercaptan.

[0063] Synthesis of eugenol-based binary olefin (EUCENE): Take 4.9g of eugenol, 3.4g of triethylamine, and 50ml of dichloromethane into a 250ml three-necked flask, and drop 7.3g of 10-undecene in an ice-water bath Acyl chloride, reacted at low temperature for 20 hours, took the mixture and added it to a pear-shaped separatory funnel, washed three times ...

Embodiment 2

[0068] Synthesis of gallic acid-based ternary olefin (GAENE): Take 17.2g of gallic acid, 32.1g of triethylamine, and 100ml of dichloromethane into a 500ml three-necked flask, and add 66.8g of 10-undecene dropwise under ice-water bath conditions Acyl chloride, reacted at low temperature for 25 hours, took the mixture and put it into a pear-shaped separatory funnel, washed three times with saturated aqueous sodium bicarbonate solution, washed three times with saturated aqueous sodium chloride solution, added anhydrous magnesium sulfate to dry, filtered, and obtained isosorbide di meta-olefins.

[0069] Preparation of mercapto group excess prepolymer emulsion: 0.47g co-stabilizer octadecyl methacrylate was dissolved in monomer 8.22g IMASH and 6.7g GAENE to obtain oil phase; 0.58g emulsifier lauryl sulfate Sodium was dissolved in 25.34 g of water to obtain an aqueous phase. The oil phase was added to the water phase, pre-emulsified by mechanical stirring, and then finely emulsifi...

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Abstract

The invention belongs to the field of photocurable resin materials, and in particular relates to an emulsion-type bio-based water-based photocurable resin and its preparation method and application. The method uses bio-based materials as raw materials and prepares bio-based modified polysulfur through a simple synthesis reaction. Alcohols and modified polyolefins are used to prepare emulsion-type bio-based water-based photocurable resins by emulsion polymerization. The water-based photocurable resin prepared by the invention is a prepolymer emulsion containing excessive double bonds or excessive mercapto groups in the structure, and can obtain a high-performance coating film with a crosslinked structure by photocuring after drying. The emulsion-type bio-based water-based photocurable resin prepared by the present invention can not only effectively solve the shortcomings of traditional solvent-based photocurable resins, such as high odor and complicated preparation of prepolymers, but also introduce bio-based components to increase the renewable carbon content of the product, green Environmental friendly.

Description

technical field [0001] The invention relates to the technical field of photocurable resin materials, in particular to an emulsion-type bio-based water-based photocurable resin and its preparation method and application. Background technique [0002] In recent years, sustainable polymer materials have attracted more and more attention from scientific researchers because of their environmental friendliness and excellent performance. Bio-based materials are also expected to replace Raw materials based on petrochemicals. Bio-based materials are derived from nature, and generally need to be modified to a certain extent in order to be better applied to the preparation of polymer materials. By modifying bio-based materials, not only a considerable amount of renewable carbon content can be retained, but also more functionalized monomers can be prepared by introducing new functional group monomers by utilizing the reactive sites of bio-based materials. [0003] Ultraviolet photopol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/40C08F222/16C08F220/18C08F2/26C08F2/48C09D4/02C09J4/02
CPCC08F220/40C08F222/1035C08F2/26C08F2/48C09D4/00C09J4/00C08F220/1818
Inventor 邓煜东闫磊
Owner 江苏富琪森新材料有限公司
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