| 摘要 |
Process for polymerizing 2-pyrrolidone in high yield to produce a high molecular weight polymer having the advantageous physical properties of synthetic polymers, such as strength and wear-resistance, and the advantageous chemical properties of cotton, such as water-absorptivity and release, dye-receptivity and similar ironing capability. The process is a hydrogen transfer which is catalyzed by an anion and bone dry carbon dioxide, nitrogen dioxide or sulphur dioxide gas and pushed to high yield with drying agents. Pure anhydrous 2-pyrrolidone is first reacted with an analytical grade alkali metal or its hydroxide or bicarbonate as an anion source to form a mixture comprising 2-pyrrolidone and the metal salt of 2-pyrrolidone; the mixture is then treated with the bond dry CO2, NO2 or SO2 gas as a catalyst to open the ring of the lactam salt; a drying agent is then added; and finally the hydrogen transfer polymerization is accomplished under controlled heating conditions to produce a high yield of polymer.
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