Guide wire coating composition, guide wire coating and preparation method of guide wire coating
A coating composition and guide wire technology, applied in the direction of coating, packaging item types, special packaging items, etc., can solve the problems of easy falling off and poor firmness of hydrophilic coating, avoid falling off and improve smoothness and biocompatibility, good hydrophilic effect
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[0089] In one embodiment, the preparation method of the polymerizable macromolecular photoinitiator includes the following steps:
[0090] (1) Add 0.1mol diphenylmethane-4,4'-diisocyanate and 2mL dibutyltin dilaurate to ethyl acetate, heat to 40℃, and slowly add 0.1mol 2-hydroxy-2- Methyl-1-phenyl-1-acetone, heated to 50°C and reacted for 4 hours to obtain an intermediate;
[0091] (2) Add 0.05 mol of bisphenol A epoxy diacrylate to the intermediate described in step (1), and then add 4 mL of dibutyltin dilaurate, heat to 70°C for 5 hours, and distill off ethyl acetate to obtain the result The polymerizable macromolecular photoinitiator.
[0092] The applicant found that the use of small molecule photoinitiators for UV curing has problems such as residue, volatilization and migration of the small molecule photoinitiators. On the one hand, it will reduce the photoinitiation efficiency, and on the other hand, it will cause the coating to age yellow and cause odors. And toxicity. The...
Example Embodiment
[0107] Example 1
[0108] Embodiment 1 provides a guide wire coating composition, which includes a top coating solution and a bottom coating solution; the mass ratio of the top coating solution and the bottom coating solution is 0.8:1;
[0109] The surface coating solution includes polyacrylamide, hyaluronic acid, polyvinylpyrrolidone, polymethyl vinyl ether / maleic anhydride copolymer; the polyacrylamide, hyaluronic acid, polyvinylpyrrolidone, polymethylethylene The mass ratio of the base ether / maleic anhydride copolymer is 0.7:1.3:1:1.5; the weight percentage of the polyvinylpyrrolidone in the surface coating solution is 0.8%; the solvent in the surface coating solution is water;
[0110] The polyacrylamide is cationic polyacrylamide, the brand is CP40, purchased from Henan Debang Water Treatment Material Co., Ltd.; the hyaluronic acid is pharmaceutical grade hyaluronic acid, purchased from Shandong Runxin Pharmaceutical Co., Ltd.; The polyvinylpyrrolidone is PVP K25, purchased fr...
Example Embodiment
[0118] Example 2
[0119] Embodiment 2 provides a guide wire coating composition, which includes a top coating solution and a bottom coating solution; the mass ratio of the top coating solution and the bottom coating solution is 1.4:1;
[0120] The surface coating solution includes polyacrylamide, hyaluronic acid, polyvinylpyrrolidone, polymethyl vinyl ether / maleic anhydride copolymer; the polyacrylamide, hyaluronic acid, polyvinylpyrrolidone, polymethylethylene The mass ratio of the base ether / maleic anhydride copolymer is 1.1:1.6:1:2.4; the weight percentage of the polyvinylpyrrolidone in the surface coating solution is 0.8%; the solvent in the surface coating solution is water;
[0121] The polyacrylamide is cationic polyacrylamide, the brand is CP40, purchased from Henan Debang Water Treatment Material Co., Ltd.; the hyaluronic acid is pharmaceutical grade hyaluronic acid, purchased from Shandong Runxin Pharmaceutical Co., Ltd.; The polyvinylpyrrolidone is PVP K25, purchased fr...
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