2-methoxyethyl acetate

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

Procedure: 2.5 g of 60% sodium hydride was suspended in 50 ml of benzene and a mixture of 5.6 g of 4methylcyclohexanone and 5.4 g of methoxyethyl acetate was added dropwise thereto under cooling. After stirring at room temperature for two hours, 20 ml of water was added and the pH value of the reaction mixture was adjusted to 3 with concentrated hydrochloric acid. After removing the benzene phase the aqueous phase was extracted with ether. The benzene solution and the ether solution were combined, washed with water, dried and concentrated to give 7.4 g of crude 2-methoxyacetyl4-methylcyclohexanone. This crude product was subjected to the subsequent step. was added dropwise under cooling After removing the benzene phase the aqueous phase was extracted with ether washed with water dried concentrated

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

Procedure: 2.5 g of 60% sodium hydride was suspended in 50 ml of benzene and a mixture of 5.6 g of 4methylcyclohexanone and 5.4 g of methoxyethyl acetate was added dropwise thereto under cooling. After stirring at room temperature for two hours, 20 ml of water was added and the pH value of the reaction mixture was adjusted to 3 with concentrated hydrochloric acid. After removing the benzene phase the aqueous phase was extracted with ether. The benzene solution and the ether solution were combined, washed with water, dried and concentrated to give 7.4 g of crude 2-methoxyacetyl4-methylcyclohexanone. This crude product was subjected to the subsequent step. was added dropwise under cooling After removing the benzene phase the aqueous phase was extracted with ether washed with water dried concentrated

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

Procedure: When the polyamide-imide resin obtained in this invention is made into a varnish, there may be used as auxiliary solvents xylene, NISSEKI HISOL-100, 150 (trade names, mfd. by Nippon Petrochemicals Co., Ltd., aromatic hydrocarbons obtained from petroleum, b.p. 80°-300° C.), methyl Cellosolve acetate, ethyl Cellosolve acetate, γ-butyrolacetone and the like in combination with the basic organic solvents described above.

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

Procedure: When the polyamide-imide resin obtained in this invention is made into a varnish, there may be used, as co-solvents, xylene, NISSEKI HISOL-100, 150 (trade names, mfd. by Nippon Petrochemicals Co., Ltd., aromatic hydrocarbons obtained from petroleum, b.p. 80°-300° C.), methyl Cellosolve acetate, ethyl Cellosolve acetate, γ-butyrolactone and the like in combination with the basic organic solvents described above.

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

Procedure: Examples of the high boiling organic solvents are phthalic acid alkyl esters (e.g., dibutyl phthalate, dioctyl phthalate, etc.), phosphoric acid esters (e.g., diphenyl phosphate, triphenyl phosphate, tricresyl phosphate, dioctylbutyl phosphate, etc.), citric acid esters (e.g., tributyl acetylcitrate, etc.), benzoic acid esters (e.g., octyl benzoate, etc.), alkylamides (e.g., diethyllaurylamide, etc.), fatty acid esters (e.g., dibutoxyethyl succinate, dioctyl azelate, etc.), trimesic acid esters (e.g., tributyl trimesate, etc.), etc. Also, examples of the low boiling organic solvents are organic solvents having a boiling point of about 30° C. to 160° C., such as lower alkyl acetates (e.g., ethyl acetate, butyl acetate, etc.), ethyl propionate, secondary butyl alcohol, methyl isobutyl ketone, β-ethoxyethyl acetate, methyl cellosolve acetate, cyclohexanone, etc. The dye providing substance is dissolved in the aforesaid high boiling organic solvent or the low boiling organic solvent and then dispersed in a hydrophilic colloid. In this case, a mixture of the high boiling organic solvent and the low boiling organic solvent may be used.

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Both surfaces of a 0.24 mm thick aluminum plate were sand-grained using a nylon brush and an aqueous dispersion of 400 mesh pumice stone and thoroughly washed with water. This aluminum plate was dipped in a 5% aqueous solution of sodium triphosphate maintained at 70° C. for 3 minutes, washed with water, and dried. A photo-sensitive solution as described in British Pat. No. 1,113,759 was prepared by dissolving 1 part by weight of a naphthoquinone-1,2-diazido-5-sulfonic acid ester of polyhydroxyphenyl obtained by polycondensation of acetone and pyrogallol and 2 parts by weight of a novolak type phenol-formaldehyde resin in a mixed solvent of 20 parts by weight of 2-methoxyethyl acetate and 20 parts by weight of methyl ethyl ketone. This photo-sensitive solution was coated on one surface of the above-prepared plate and then on the other surface to produce a pre-sensitized printing plate which has photo-sensitive layers on both surfaces of the plate. The thus-produced printing plate was cut in three 1,003 mm×800 mm pieces to produce Samples A, B and C. an aqueous dispersion of 400 mesh pumice stone and thoroughly washed with water washed with water dried 1,113,759 was prepared

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Both surfaces of a 0.24 mm thick aluminum plate were sand-grained using a nylon brush and an aqueous dispersion of 400 mesh pumice stone and thoroughly washed with water. This aluminum plate was dipped in a 5% aqueous solution of sodium triphosphate maintained at 70° C. for 3 minutes, washed with water, and dried. A photo-sensitive solution as described in British Pat. No. 1,113,759 was prepared by dissolving 1 part by weight of a naphthoquinone-1,2-diazido-5-sulfonic acid ester of polyhydroxyphenyl obtained by polycondensation of acetone and pyrogallol and 2 parts by weight of a novolak type phenol-formaldehyde resin in a mixed solvent of 20 parts by weight of 2-methoxyethyl acetate and 20 parts by weight of methyl ethyl ketone. This photo-sensitive solution was coated on one surface of the above-prepared plate and then on the other surface to produce a pre-sensitized printing plate which has photo-sensitive layers on both surfaces of the plate. The thus-produced printing plate was cut in three 1,003 mm×800 mm pieces to produce Samples A, B and C. an aqueous dispersion of 400 mesh pumice stone and thoroughly washed with water washed with water dried 1,113,759 was prepared

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Both surfaces of a 0.24 mm thick aluminum plate were sand-grained using a nylon brush and an aqueous dispersion of 400 mesh pumice stone and thoroughly washed with water. This aluminum plate was dipped in a 5% aqueous solution of sodium triphosphate maintained at 70° C. for 3 minutes, washed with water, and dried. A photo-sensitive solution as described in British Pat. No. 1,113,759 was prepared by dissolving 1 part by weight of a naphthoquinone-1,2-diazido-5-sulfonic acid ester of polyhydroxyphenyl obtained by polycondensation of acetone and pyrogallol and 2 parts by weight of a novolak type phenol-formaldehyde resin in a mixed solvent of 20 parts by weight of 2-methoxyethyl acetate and 20 parts by weight of methyl ethyl ketone. This photo-sensitive solution was coated on one surface of the above-prepared plate and then on the other surface to produce a pre-sensitized printing plate which has photo-sensitive layers on both surfaces of the plate. The thus-produced printing plate was cut in three 1,003 mm×800 mm pieces to produce Samples A, B and C. an aqueous dispersion of 400 mesh pumice stone and thoroughly washed with water washed with water dried 1,113,759 was prepared

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

Procedure: 2.5 g of 60% sodium hydride was suspended in 50 ml of benzene and a mixture of 5.6 g of 4methylcyclohexanone and 5.4 g of methoxyethyl acetate was added dropwise thereto under cooling. After stirring at room temperature for two hours, 20 ml of water was added and the pH value of the reaction mixture was adjusted to 3 with concentrated hydrochloric acid. After removing the benzene phase the aqueous phase was extracted with ether. The benzene solution and the ether solution were combined, washed with water, dried and concentrated to give 7.4 g of crude 2-methoxyacetyl4-methylcyclohexanone. This crude product was subjected to the subsequent step. was added dropwise under cooling After removing the benzene phase the aqueous phase was extracted with ether washed with water dried concentrated

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

Procedure: When the polyamide-imide resin obtained in this invention is made into a varnish, there may be used as auxiliary solvents xylene, NISSEKI HISOL-100, 150 (trade names, mfd. by Nippon Petrochemicals Co., Ltd., aromatic hydrocarbons obtained from petroleum, b.p. 80°-300° C.), methyl Cellosolve acetate, ethyl Cellosolve acetate, γ-butyrolacetone and the like in combination with the basic organic solvents described above.

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

Procedure: When the polyamide-imide resin obtained in this invention is made into a varnish, there may be used, as co-solvents, xylene, NISSEKI HISOL-100, 150 (trade names, mfd. by Nippon Petrochemicals Co., Ltd., aromatic hydrocarbons obtained from petroleum, b.p. 80°-300° C.), methyl Cellosolve acetate, ethyl Cellosolve acetate, γ-butyrolactone and the like in combination with the basic organic solvents described above.