Fecha de publicación: 22/06/1976 Fuente: WIPO "pollen" Stereoregular polyvinyl alcohol in acetic anhydride reacts with anhydrous tric acid at -10.degree. to -15.degree.C to form new stereoregular polyvinyl nitrate which is useful as a base for propellant compositions and compares favorably in physical and chemical properties to nitrocellulose. -GOVT PAR The invention described herein may be manufactured, used, and licensed by or for the Government for governmental purposes without the payment to us of any royalty thereon.