Yao Nationality Daojing Protector and Yao Nationality Daojing Protection Method
A technology of protective agent and cross-linking agent, used in papermaking, coating, post-processing of waste paper, etc., can solve the problem of using Yao nationality Taojing that cannot be solved by protection and repair, and cannot provide flexibility and mechanical strength, Old books have no problems such as repair and protection ability, so as to achieve the effect of easy reading and sorting, good anti-discoloration ability, and not easy to corrupt
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Synthetic example 1
[0027] 4-(3,6-bis(4-([2-methyl-1,1′-biphenyl]-4-yl(9,9-dimethyl-9H-fluoren-2-yl)amino) Phenyl)-9H-carbazol-9-yl)benzaldehyde synthesis: 5g starting compound 1 and 15g starting compound 2 in a mixed solvent of 100ml THF and 20ml water, in 0.90g Pd(PPh3)3 and 7.70g In the presence of potassium carbonate, react at 75° C. for 8 hours under nitrogen gas. After the reaction was completed, it was cooled to room temperature, the solvent was removed by rotary evaporation in vacuo, and then extracted with chloroform to obtain compound 3.
[0028] 4-(3,6-bis(4-([2-methyl-1,1′-biphenyl]-4-yl(9,9-dimethyl-9H-fluoren-2-yl)amino) Phenyl)-9H-carbazol-9-yl)styrene synthesis: 4g intermediate compound 3 was added to 350ml tetrahydrofuran solvent, 2.8gPPh3CMeBr and 1.5g t-BuOK were added, nitrogen flowed, stirred and reacted in ice-water bath for 3 hours, and then used Slowly neutralize with dilute hydrochloric acid. After the reaction was completed, it was extracted with chloroform, dried and...
Synthetic example 2
[0031] Take 1 g of monomer compound 4, dissolve it in 100 ml of tetrahydrofuran solution, pour it into a three-necked flask, and blow nitrogen. Weigh 0.02 g of azobisisobutyronitrile, dissolve it in 5 ml of tetrahydrofuran to make an initiator solution, slowly inject the initiator solution into a three-necked flask, rapidly raise the temperature to 60°C after the filling, and cool down after 3 hours of polymerization A polymer solution is obtained. The number average molecular weight measured by liquid chromatography is 3953, and the molecular weight distribution is 2.35.
Embodiment 1
[0033]Take 100ml of the above solution, add 0.3g of cross-linking agent, 5g of glycerin, and 0.05g of hydroquinone, stir evenly and spray it on the page of Taoism of Yao nationality with a history of more than 70 years, dry it naturally and put it in the sun Exposure to the sun for 10 days, observe its flexibility, strength, degree of embrittlement, and color change. The Taoist scriptures of the Yao nationality after being exposed to the sun were naturally placed in an old warehouse in a humid environment, and stored at room temperature for 30 days to observe the moth and mildew.
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