Polyethylene imine boranes and their preparation

Abstract

Abstract THIS INVENTION RELATES TO POLYETHYLENE IMINE BORANES. THEY ARE PREPARED BY REACTING A POLYETHYLENE IMINE BORANES. THEY ARE PREPARED BY REACTING A POLYETHYLENEIMINE HAVING A MOLECULAR WEIGHT FROM 600 TO 100,000 WITH THF:BH3 IN TETRAHYDROFURAN. THE PRESENTLY PREFERRED BORANES ARE PREPARED AS ABOVE INDICATED USING A POLYETHYLENE IMINE HAVING A MOLECULAR WEIGHT BETWEEN 600 AND 1800. THE SOLVENT AND REACTANTS SHOULD BE AS ANHYDROUS AS POSSIBLE. THE PROPERTIES VARY WITH THE AMOUNT OF AMINO GROUPS WHICH ARE COMPLEXED TO BORANE GROUPS. THUS, THE BORANES MADE BY REACTING 1 BH3 GROUP FOR EACH 4 TO 100 AMINO GROUPS ARE VISCOUS LIQUIDS WHICH ARE FAIRLY SOLUBLE IN WATER AND ORGANIC SOLVENTS INCLUDING BENZENE. THEY ARE VERY SUBSTANTIVE TO ANIONIC SUBSTRATES AND ARE USEFUL FOR REDUCTIVE BLEACHING AND AS STABILIZING AGENTS FOR CELLULOSE, CLAY, ETC. WHEN A GREATER NUMBER OF AMINO GROUPS ARE CONVERTED TO BORANE GROUPS, SUCH AS 1 BORANE GROUP FOR EACH 2 TO 4 AMINO GROUPS OF THE POLYETHYLENE IMINE, THE PRODUCTS ARE EXTREMELY VISCOUS POLYMERS OR SOLIDS. THESE PRODUCTS ALSO RETAIN SLIGHT WATER SOLUBILITY(1 TO 5%) AND ARE USEFUL WHERE A MORE CONCENTRATED REDUCING ACTIVITY IS DESIRED.

Inventors

• 👤 Robert C Wade

Bibliographic Details