| 摘要 |
This invention relates to derivatized and thinned starches which have a degree of substitution in the range from about 0.05 to about 0.4 and an intrinsic viscosity in the range from about 0.12 to about 0.28 deciliters per gram. The starches have the unique property of yielding stable, aqueous dispersions of high solids content (greater than 25% by weight) when graft copolymerized with one or more vinyl monomers. The starch graft copolymers exhibit superior tensile strength and abrasion resistance. |
