Abstract: A polymerizable composition is provided which is constituted by adding isocyanate by 0.1 to 2 equivalent to the alcoholic hydroxyl group in a mixture dissolving component A prescribed below by 20 to 60 parts by weight to a total of 80 to 40 parts by weight of component B and component C in the ratio specified below:[Component A]A multifunctional (meth)acrylate possessing at least one alcoholic hydroxyl group, and also possessing at least one aromatic ring replaced by at least one halogen atom other than fluorine or phenyl group, and two or more (meth)acryloyl groups in a molecule:[Component B]A multifunctional (meth)acrylate possessing at least one aromatic ring having neither halogen atom nor phenyl group as substituent, and possessing two or more (meth)acryloyl groups in a molecule, or a mixture of radically polymerizable multifunctional unsaturated monomer including the compound; 5 to 80 wt.

Abstract: Improved process for preparing pyridine-2,3-dicarboxylic acid compounds of the formula: ##STR1## wherein R.sup.1 and R.sup.3 are each H, (un)substituted alkyl, or (un)substituted phenyl; R.sup.2 is H, (un)substituted alkyl, (un)substituted phenyl, alkylthio, alkoxy, (un)substituted phenylthio, (un)substituted phenoxy, halogen, alkoxycarbonyl, aminocarbonyl which may optionally be substituted, or cyano; or both of R.sup.1 and R.sup.2 or both R.sup.2 and R.sup.3 may combined together to form a divalent alkylene; and R.sup.4 and R.sup.

Abstract: Improved process for the production of 2,3-dichloro-1-propanol in high yield by chlorinating allyl alcohol with chlorine, which is characteristic in that the chlorination reaction proceeds by introducing simultaneously allyl alcohol and chlorine gas and optionally hydrogen chloride gas into the reaction system containing aqueous hydrochloric acid without necessity of extreme cooling and/or pressure.