Starch acrylamides and the method for preparing the same

Details Starch acrylamides and the method for preparing the same Starch acrylamides and the method for preparing the same

C - Chemistry, Metallurgy

08

B

260/221.2

C08B 31/00 (2006.01)

Patent

CA 1085389

ABSTRACT OF THE DISCLOSURE The invention relates to starch acrylamides containing polymerizable pendant acrylamide groups. The hydrophilic or hydrophobic properties of the starch can be altered or modified by the acrylamide groups or the type of starch chain. The starch acrylamides can be homopolymerized or copolymerized with other ethylenically unsaturated monomers as well as other cross-linking reagents to provide water-resistant, clear, flexible coatings or shaped articles. The hydrophilic starch acrylamide hydrolyzates herein readily disperse into water at a high solids level to pro- vide low-viscosity pastes which may be used as a vehicle to pre- pare flexible, water-insoluble starch-based coatings. The starch acrylamides may be prepared by etherifying a starch with N-methylol acrylamides in the presence of an acid catalyst and a polymeriz- ation inhibitor.

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