[C:1]([OH:10])(=[O:9])CC[CH2:4][CH2:5][C:6]([OH:8])=[O:7].OC[C:13]([CH3:17])(CO)C.C(OCCO)(=O)C=C.COC1C=CC(O)=CC=1.C(C1C=C(C)C=C(C(C)(C)C)C=1O)(C)(C)C.C([O-])(=O)C.[Cs+].O=C=[N:58]C1CC(C)(C)CC(C)(CN=C=O)C1.[N-]=C=O>C(O)C>[C:6]([OH:8])(=[O:7])[CH:5]=[CH2:4].[NH2:58][C:1]([O:10][CH2:13][CH3:17])=[O:9]672.0 g of a polyester of adipic acid and neopentyl glycol with an OH number of about 200, 140.0 g of hydroxyethyl acrylate, 0.6 g of hydroquinone monomethyl ether, 1.21 g of 2,6-di-tert-butyl-4-methylphenol, 0.12 g of cesium acetate were initially introduced into a round-bottomed flask and heated to 50° C. 400.0 g of isophorone diisocyanate were then added dropwise over the course of 30 minutes. The mixture was left to react for a further 7 hours at 90-95° C., during which the NCO content dropped to 0.56%. The mixture was cooled to 60° C., then 520.0 g of ethanol were added and the mixture was left to react further for about 2 hours at 65-70° C. until the isocyanate content (NCO value) had dropped to 0. The resulting resin was filtered over a 50 μm filter and bottled.
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