Document BRz9xg5mn9kNrz1myJgg0Dq68

LABORATORY MEMORANDUM No. Subject: For; Date: page 2 Another nuidifieatiea ef the abere procedure would inrelre the following: Te base exchange the original quaternary amine with the sediua heeterite, and. subsequently te carry eat the reactiea ef the monomers with the pendant hydroxyl groups. Reactions ef hydroxyl containing substrates with acrylamide and ethylene oxide. Selid substrates containing hydroxyl groups e.g. kaolinite, heeterite, titanium dioxide, lead ead.de, asbestos, silicis acid tetraaer etc.) could alse be reacted with acrylamide er ethylene oxide. Thus the plastieity and water dispersion characteristics ef the selid particles might be improved considerably. The types ef reactions inrelred here are illustrated schematically: I a) With acrylamide: ( selid substrate)- OH + GH2-CH-CONH2 to) With ethylene oxide: ( selid substrate) -O-CHg-GHg-COlfflg (substrate)--OH + n CH2o"-C 2 --*> (substrate)-0-( CHg-CHg-O) -H l!n the abere examples the substrate ceuld alse toe a polymer such polyvinyl alcohol V, Parlor M. Espelesin Dr. F.L. Cuthbert Mr. J. Costelle Ilr.D. Herman Mr. A. Scarbrough Mr. W. Oleger ML 000041454 N 27324