[2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution containing 50 ml of MIBK and 59.6 g (0.20 moles) of pentaerythritol triacrylate was added dropwisely to a solution containing 100 ml of MIBK and 22.2 g (0.1 moles) of isophorone diisocyanate included in a 500 ml flask at the temperature of 25° C., while air bubbling was conducted. After the dropwise addition was completed, 0.3 g of dibutyltin dilaurate was added to the mixture, and heating and stirring were conducted for 4 hours at the temperature of 70° C. After the reaction was completed, the obtained reaction solution was washed with 100 ml of 5% hydrochloric acid. Then, an organic layer was separated, and then solvent was removed under reduced pressure at the temperature of 40° C., or less to obtain 80.5 g of urethane acrylate which was a transparent and colorless viscous liquid. was added dropwisely to a solution included in a 500 ml flask at the temperature of 25° C., while air bubbling After the dropwise addition 0.3 g of dibutyltin dilaurate was added to the mixture heating the obtained reaction solution was washed with 100 ml of 5% hydrochloric acid Then, an organic layer was separated solvent was removed under reduced pressure at the temperature of 40° C.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Into 1.8 liters of ethyl cellosolve, 90 g of polymer obtained by the addition reaction of pentaerythritol triacrylate to the partial alcoholysis product of copolymer of styrene/maleic acid anhydride (styright CM-2L manufactured by Sankyo Chemical Co., Ltd.), 10 g of partial hydrolysed product of polymethyl methacrylate and 100 g of trimethylolpropane triacrylate were dissolved followed by adding the initiator of 2 g of compound a-1, 16 g of compound b-1 and 6 g of compound c-1 and 1.5 g of the coloring agent of Victoria pure blue to prepare the photosensitive solution. The photosensitive plate was produced from the solution thus prepared in accordance with the same procedures as in Example 1.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Into a 2-liter separable flask were put 1001 parts (3 mol) of pentaerythritol triacrylate, 540 parts (1 mol) of hexamethylene diisocyanate trimer, and 0.31 parts of hydroquinone monomethyl ether. With stirring, air was introduced into the liquid through a glass tube, and the liquid temperature was made to be 70° C. Thereto was added 0.31 parts of dibutyltin dilaurate and while the reaction temperature was adjusted to be between 70 and 80° C., reaction was performed for 5 hours to give a urethane acrylate of hexamethylene diisocyanate trimer and pentaerythritol triacrylate. Into a 2-liter separable flask were put air was introduced into the liquid through a glass tube to be 70° C to be between 70 and 80° C. reaction

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Into a 1-liter separable flask were put 667 parts (2 mol) of pentaerythritol triacrylate (manufactured by Nippon Kayaku, trade name: KAYARAD PET-30), 222 g (1 mol) of isophorone diisocyanate and 0.18 parts of hydroquinone monomethyl ether. With stirring, air was introduced into the liquid through a glass tube, and the liquid temperature was made to be 70° C. Thereto was added 0.18 parts of dibutyltin dilaurate and while the reaction temperature was adjusted to be between 70 and 80° C., reaction was performed for 6 hours to give a urethane acrylate of isophorone diisocyanate and pentaerythritol triacrylate. Into a 1-liter separable flask were put air was introduced into the liquid through a glass tube to be 70° C to be between 70 and 80° C. reaction

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution containing 50 ml of MIBK and 59.6 g (0.20 moles) of pentaerythritol triacrylate was added dropwisely to a solution containing 100 ml of MIBK and 22.2 g (0.1 moles) of isophorone diisocyanate included in a 500 ml flask at the temperature of 25° C., while air bubbling was conducted. After the dropwise addition was completed, 0.3 g of dibutyltin dilaurate was added to the mixture, and heating and stirring were conducted for 4 hours at the temperature of 70° C. After the reaction was completed, the obtained reaction solution was washed with 100 ml of 5% hydrochloric acid. Then, an organic layer was separated, and then solvent was removed under reduced pressure at the temperature of 40° C., or less to obtain 80.5 g of urethane acrylate which was a transparent and colorless viscous liquid. was added dropwisely to a solution included in a 500 ml flask at the temperature of 25° C., while air bubbling After the dropwise addition 0.3 g of dibutyltin dilaurate was added to the mixture heating the obtained reaction solution was washed with 100 ml of 5% hydrochloric acid Then, an organic layer was separated solvent was removed under reduced pressure at the temperature of 40° C.