sodium;ethenesulfonate

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

Procedure: Sodium ethylenesulfonate (18.2 ml, 25% aqueous solution w/w) and dimethylamine (4.43 ml, 40% aqueous solution w/w) were heated in a sealed finger tube at 105° C. for 48 h before concentrating in vacuo to yield the subtitle compound as a white solid. Yield: 9.80 g. before concentrating in vacuo

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

Procedure: The same vessel as in Example 1 was charged with 130 g. of methanol, 25 g. of water, 320 g. of vinyl acetate, 15 g. of 30% aqueous solution of sodium ethylenesulfonate and 2.8 g. of azobisisobutylonitrile, and polymerization was carried out at a temperature of 70°C. for 3 hours. After adding 2.8 g. of 30% aqueous solution of sodiem ethylenesulfonate to the vessel, the polymerization was further continued for 5 hours to give vinyl acetate-sodium ethylenesulfonate copolymer containing 2.3% by mole of sodium ethylenesulfonate unit. Then the copolymer was hydrolyzed by a conventional method to give a modified PVA of which degree of hydrolysis was 92% by mole. The same vessel as in Example 1 was charged with 130 g After adding 2.8 g

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

Procedure: The same vessel as in Example 1 was charged with 130 g. of methanol, 25 g. of water, 320 g. of vinyl acetate, 15 g. of 30% aqueous solution of sodium ethylenesulfonate and 2.8 g. of azobisisobutylonitrile, and polymerization was carried out at a temperature of 70°C. for 3 hours. After adding 2.8 g. of 30% aqueous solution of sodiem ethylenesulfonate to the vessel, the polymerization was further continued for 5 hours to give vinyl acetate-sodium ethylenesulfonate copolymer containing 2.3% by mole of sodium ethylenesulfonate unit. Then the copolymer was hydrolyzed by a conventional method to give a modified PVA of which degree of hydrolysis was 92% by mole. The same vessel as in Example 1 was charged with 130 g After adding 2.8 g

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

Procedure: A 1,000 ml. glass polymerization vessel equipped with a reflux condenser, a dropping funnel, a thermometer and a stirrer was charged with 320 parts of vinyl acetate, 130 parts of methanol, 15 parts of 30% aqueous solution of sodium ethylenesulfonate and 0.2% by mole of azobisisobutylonitrile per the vinyl acetate. After carrying out the polymerization at a temperature of 60° to 65°C. for 8 hours, the residual vinyl acetate was removed by a conventional method to give vinyl acetate-sodium ethylenesulfonate copolymer containing 2.3% by mole of sodium ethylenesulfonate unit. Then the copolymer was hydrolyzed by a conventional method to give a modified PVA of which degree of hydrolysis in vinyl acetate unit was 99% by mole. glass polymerization vessel equipped with a reflux condenser, a dropping funnel the polymerization at a temperature of 60° to 65°C. for 8 hours the residual vinyl acetate was removed by a conventional method

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

Procedure: Sodium ethylenesulfonate (18.2 ml, 25% aqueous solution w/w) and dimethylamine (4.43 ml, 40% aqueous solution w/w) were heated in a sealed finger tube at 105° C. for 48 h before concentrating in vacuo to yield the subtitle compound as a white solid. Yield: 9.80 g. before concentrating in vacuo

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

Procedure: A one liter Morton style resin kettle, fitted with a chilled water condenser, thermometer, nitrogen sparger and mechanical stirrer was charged with 500 ml of purified water. The water was refluxed for 1 hour with a nitrogen purge and then cooled to room temperature. Acrylamide, 9.886 g (0.14 mole), 4.81 g (0.37 mole) of sodium vinyl sulfonate as a 25% solution in water, 0.33 g (0.002 mole) of N-octylacrylamide and 15 g of sodium dodecyl sulfate (SDS) were charged into the flask. The reaction solution was heated to 50° C. and 0.01 g potassium persulfate was added. After 17 hours at 50° C. and 300 rpm stirring, the viscous solution was slowly poured into 3 L of methanol and the precipitated polymer was isolated by filtration. The polymer was then masticated in a Waring blender with 2 L of methanol for 30 seconds, filtered and dried under vacuum at room temperature. The yield of the polymer was 10.9 g. A one liter Morton style resin kettle, fitted with a chilled water condenser purge The reaction solution was heated to 50° C. the precipitated polymer was isolated by filtration filtered dried under vacuum at room temperature

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

Procedure: Sodium ethylenesulfonate (18.2 ml, 25% aqueous solution w/w) and dimethylamine (4.43 ml, 40% aqueous solution w/w) were heated in a sealed finger tube at 105° C. for 48 h before concentrating in vacuo to yield the subtitle compound as a white solid. Yield: 9.80 g. before concentrating in vacuo

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

Procedure: A one liter Morton style resin kettle, fitted with a chilled water condenser, thermometer, nitrogen sparger and mechanical stirrer was charged with 500 ml of purified water. The water was refluxed for 1 hour with a nitrogen purge and then cooled to room temperature. Acrylamide, 9.886 g (0.14 mole), 4.81 g (0.37 mole) of sodium vinyl sulfonate as a 25% solution in water, 0.33 g (0.002 mole) of N-octylacrylamide and 15 g of sodium dodecyl sulfate (SDS) were charged into the flask. The reaction solution was heated to 50° C. and 0.01 g potassium persulfate was added. After 17 hours at 50° C. and 300 rpm stirring the viscous solution was slowly poured into 3 L of methanol and the precipitated polymer was isolated by filtration. The polymer was then masticated in a Waring blender with 2 L of methanol for 30 seconds, filtered and dried under vacuum at room temperature. The yield of the polymer was 10.9 g. A one liter Morton style resin kettle, fitted with a chilled water condenser purge The reaction solution was heated to 50° C. the precipitated polymer was isolated by filtration filtered dried under vacuum at room temperature

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

Procedure: A one liter Morton style resin kettle, fitted with a chilled water condenser, thermometer, nitrogen sparger and mechanical stirrer was charged with 500 ml of purified water. The water was refluxed for 1 hour with a nitrogen purge and then cooled to room temperature. Acrylamide, 9.886 g (0.14 mole), 4.81 g (0.37 mole) of sodium vinyl sulfonate as a 25% solution in water, 0.33 g (0.002 mole) of N-octylacrylamide and 15 g of sodium dodecyl sulfate (SDS) were charged into the flask. The reaction solution was heated to 50° C. and 0.01 g potassium persulfate was added. After 17 hours at 50° C. and 300 rpm stirring the viscous solution was slowly poured into 3 L of methanol and the precipitated polymer was isolated by filtration. The polymer was then masticated in a Waring blender with 2 L of methanol for 30 seconds, filtered and dried under vacuum at room temperature. The yield of the polymer was 10.9 g. A one liter Morton style resin kettle, fitted with a chilled water condenser purge The reaction solution was heated to 50° C. the precipitated polymer was isolated by filtration filtered dried under vacuum at room temperature

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

Procedure: A one liter Morton style resin kettle, fitted with a chilled water condenser, thermometer, nitrogen sparger and mechanical stirrer was charged with 500 ml of purified water. The water was refluxed for 1 hour with a nitrogen purge and then cooled to room temperature. Acrylamide, 9.886 g (0.14 mole), 4.81 g (0.37 mole) of sodium vinyl sulfonate as a 25% solution in water, 0.33 g (0.002 mole) of N-octylacrylamide and 15 g of sodium dodecyl sulfate (SDS) were charged into the flask. The reaction solution was heated to 50° C. and 0.01 g potassium persulfate was added. After 17 hours at 50° C. and 300 rpm stirring the viscous solution was slowly poured into 3 L of methanol and the precipitated polymer was isolated by filtration. The polymer was then masticated in a Waring blender with 2 L of methanol for 30 seconds, filtered and dried under vacuum at room temperature. The yield of the polymer was 10.9 g. A one liter Morton style resin kettle, fitted with a chilled water condenser purge The reaction solution was heated to 50° C. the precipitated polymer was isolated by filtration filtered dried under vacuum at room temperature

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

Procedure: The remainder of the sodium vinyl sulphonate, vinyl acetate, vinyl chloride and sodium persulphate was then added continuously over a period of 4 hours while maintaining a temperature of 73°-75° C. When the additions had been completed, the reaction contents were taken to 80° C. and held at that temperature for 30 minutes. They were then cooled to below 30° C. and removed to another sealed vessel and potassium hydroxide (25% aq. solution 10 g) and formalin (5.7 g) were added with stirring. while maintaining a temperature of 73°-75° C the reaction contents were taken to 80° C. They were then cooled to below 30° C. removed to another sealed vessel potassium hydroxide (25% aq. solution 10 g) and formalin (5.7 g) were added

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

Procedure: A water-soluble copolymer of acrylonitrile, acrylamide and ethylene sulfonic acid was prepared in the following way: 57.5 g of an aqueous 47% solution of sodium ethylene sulfonate, stabilized against polymerization by 0.2% sodium nitrite, was destabilized by adding 3 g urea and acidified with concentrated hydrochloric acid to pH 2. The developing gases were repeatedly drawn off. 7.1 g Acrylamide and 13.6 ml acrylonitrile were added and the monomer mixture was dissolved in 76 ml of oxygen-free water. 1 ml of a 5% sodium pyrosulfite solution and the same amount of ammonium persulfate were stirred in, and the somewhat turbid solution was left standing under carbon dioxide at room temperature for 24 hours. The viscous solution thus obtained was poured into 2 liters of anhydrous ethanol. The white coagulate was purified by dissolving it in water and again precipitating it in anhydrous ethanol, broken to small pieces and dried at 70° C. was left The viscous solution thus obtained The white coagulate was purified by dissolving it in water again precipitating it in anhydrous ethanol dried at 70° C.