Allyl alcohol-acrylic acid-sulfur dioxide

Terpolymerization of Allyl Alcohol, Acrylic Acid, and Sulfur Dioxide [64]... 

EXPLOSION and FIRE CONCERNS combustible NFPA rating Health 3, Flammability 2, Reactivity 0 flammable liquid when exposed to heat, flame or oxidizers reacts violently with acetic acid, acetic anhydride, acrylic acid, acrylonitrile, allyl chloride, carbon disulfide, chlorosulfonic acid, hydrochloric acid, nitric acid, sulfuric acid, ethylene chlorohydrin, oleum, acrolein, or vinyl acetate heating to decomposition emits carbon monoxide, carbon dioxide, hydrocarbons, toxic oxides of nitrogen, and toxic amine vapors use water spray, dry chemical, alcohol foam, or carbon dioxide for firefighting purposes. 

Into a pressure pol5nnerization vessel are added 150 gm water, 3 gm ammonium persulfate, and 24 gm (0.415 mole) allyl alcohol. The mixture is cooled to 15°C and then 50 gm (0.695 mole) of acrylic acid is added. The mixture is further cooled to - 20°C and 26 gm (0.406 mole) of sulfuric dioxide is added. The vessel is sealed and polymerization is initiated by raising the temperature to 40°C with initial agitation. Polymerization is continued for 16 hr and then the reaction mixture is cooled, water added, and the mixture steam distilled at 200 mm pressure. The steam distillation is continued until 100 gm water is collected. The polymer is soluble in hot water and when the solution is cooled no polymer settles. The solution has little odor and can be used to cast clear film on glass plates, or used as spinning dope to prepare fibers which are insolubi-lized by heat. The polymer analyzes as follows 27% sulfur dioxide, 50% acrylic acid, and 23% allyl alcohol. 

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