Preparation method of bio-based UV curing initiator as well as product and application of bio-based UV curing initiator

A curing initiator, bio-based technology, applied in application, organic chemistry, household appliances, etc., can solve the problems of limited application, poor solubility, etc., and achieve the effect of high initiator activity, good compatibility, and excellent comprehensive performance

Active Publication Date: 2022-07-15
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they are mostly in powder form, and their solubility in UV-curable prepolymers, diluents and various solvents is poor, which greatly limits their applications

Method used

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  • Preparation method of bio-based UV curing initiator as well as product and application of bio-based UV curing initiator
  • Preparation method of bio-based UV curing initiator as well as product and application of bio-based UV curing initiator
  • Preparation method of bio-based UV curing initiator as well as product and application of bio-based UV curing initiator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] (1) 7.73g ATX, 9.33g castor oil, 0.86g p-toluenesulfonic acid were added to a clean 50mL three-necked flask with a thermometer, the temperature was increased to 120°C and the pressure was reduced to 130mmHg, and the temperature was lowered to 60°C after the reaction for 6h to obtain 16.52g of yellow viscous liquid is ATX bio-based UV initiator with castor oil as the core.

[0074] (2) 12.96g (25mmol) of 2,2-bis[4-(4-aminophenoxybenzene)]hexafluoropropane, 100g of anhydrous tetrahydrofuran and 33.32g (75mmol) of hexafluoropropane were successively added to a 100mL three-necked flask anhydride, reacted at 25°C for 8h. Subsequently, 7.20 g (52.52 mmol) of 4-aminobenzoic acid, 50.0 g of m-dichlorobenzene, and 20 g of anhydrous tetrahydrofuran were added dropwise to the reaction system, the reaction was continued for 16 h at room temperature, and the solvent was removed under reduced pressure at 130 mmHg / 80 °C. , to obtain 98 g of PI white powder.

[0075] Take 61.224g of ga...

Embodiment 2

[0081] According to Table 1, different PIPUAs were prepared, and 40g were taken respectively, and 0.4g of ATX bio-based UV initiators with castor oil as the core obtained in Example 1 were respectively added to them, mixed evenly, and after the bubbles were removed, spin-coating was performed. onto a glass slide, about 0.7mm thick. After UV curing for 60s, the properties of the obtained cured product are shown in Table 3, Figure 5 .

[0082] Table 3 Effects of different PIPUAs on UV-curable materials

[0083]

Embodiment 3

[0085] Take the PIPUA-340g obtained in Example 1, and add the ATX bio-based UV initiator with castor oil as the core obtained in Example 1 to it, mix well, remove the bubbles, spin-coat on a glass slide with a thickness of about 0.7mm. After UV curing for 60s, the properties of the obtained cured product are shown in Table 4.

[0086] Table 4 Effect of different UV initiator dosages on UV curable materials

[0087]

[0088] The above-mentioned ATX bio-based UV initiator dosage is calculated according to the mass percentage of PIPUA-3

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Abstract

The invention discloses a preparation method of a bio-based UV (ultraviolet) curing initiator as well as a product and application thereof, and the preparation method of the UV curing initiator comprises the step of reacting vegetable oil polyol with a thioxanthone derivative ATX with carboxyl under the catalysis of a catalyst to obtain the bio-based UV curing initiator taking the vegetable oil polyol as a core. Urethane acrylate containing an imide chain segment is initiated by the initiator to be subjected to UV curing, and the obtained UV curing material has the light transmittance of 85.0 to 96.0 percent (400 to 800nm), the tensile strength of 4 to 12MPa, the elongation at break of 60 to 180 percent, the pencil hardness of 6B to 9H and the initial thermal decomposition temperature of 273.4 to 286.4 DEG C. The UV initiator can be used in the fields of acrylate-based UV curing paint, printing ink and electronic packaging.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a preparation method of a bio-based UV curing initiator, products and applications thereof. Background technique [0002] Ultraviolet (UV) curing is a new technology of energy saving and environmental protection, which has the advantages of fast curing and environmental friendliness [L.Xue, Y.Y.Zhang, Y.J.Zuo, et al., Preparation and characterization of novel UV-curing silicone rubber via thiol-ene reaction[J], Mater. Lett., 2013, 106(34): 425-427], has been widely used in important fields such as coatings, inks and electronic packaging. In the UV curing system, although the proportion of UV initiator is small (1–10 wt%), it directly affects the curing speed and the comprehensive properties of the cured material. Commercially available small-molecule UV initiators are well used in the field of UV-curable materials. However, many small molecule UV initiators are odorous ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/48C07D335/16C08F299/06C08G18/75C08G18/67C08G18/66C08G18/64C08G18/48C08G18/32C09D175/16C09D11/101
CPCC08F2/48C07D335/16C08F299/065C08G18/6677C08G18/6438C08G18/4854C08G18/3206C08G18/755C08G18/672C09D175/16C09D11/101
Inventor 杨雄发范云鑫何娜宋艳王晓佳黄明
Owner HANGZHOU NORMAL UNIVERSITY
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