Uniroyal Inc.

John W Zukel

Howard L Plant

Ronald B Ames

Byron A Hunter

2-Thio, 2-sulfinyl and 2-sulfonyl pyridine N-oxides of the formula ##STR1## are useful for regulating the natural growth or development of plants. E.g., the compound wherein n = 1, R.sub.1 = methyl and R.sub.2 = 2,3,4-trimethylphenyl retards cotton and increases root growth of turf.

Thio pyridine N-oxides and regulation of the natural growth and

2-Thio, 2-sulfinyl and 2-sulfonyl pyridine N-oxides of the formula ##STR1## ARE USEFUL FOR REGULATING THE NATURAL GROWTH OR DEVELOPMENT OF PLANTS. E.g., the compound wherein n = 1, R.sub.1 = methyl and R.sub.2 = 2,3,4-trimethylphenyl retards cotton and increases root growth of turf.

Regulation of the natural growth or development of plants with

Cementitious structures characterized by improved durability and weather resistance are obtained by: Incorporating alkyl and alkenyl succinic acids, their anhydrides, acid esters, acid amides, halogenated compounds and salts, into cementitious mixtures prior to setting; applying said succinic compounds onto concrete subsequent to setting; or by a combination of the forgoing steps; said alkyl and alkenyl substituents containing from 8 to 40 carbon atoms.

Growing community of inventors

Hamden, CT, United States of America

John W Zukel