Patent ID: 8987438
Filing Date: 2015-03-24
Classification: C08B,C08L

Abstract:
1. A method for making derivatized guar, comprising: reacting guar splits with a derivatizing reagent in an aqueous medium under appropriate reaction conditions to produce derivatized guar splits, wherein neither the guar splits nor the derivatized guar splits are treated to crosslink the guar splits or derivatized guar splits, washing the derivatized guar splits with from about 2 to about 30 kilograms per kilogram of derivatized guar splits of an aqueous salt solution comprising water and, based on 100 parts by weight of the salt solution, from about 0.1 to about 30 parts by weight of a water soluble non-boron salt having a monovalent cation, and separating washed derivatized guar splits from the aqueous salt solution by filtration, centrifugation, or filtration and centrifugation, wherein the washed derivatized guar splits have, after separation from the aqueous salt solution and prior to drying, a water content of less than or equal to 80 percent by weight, and drying the washed derivatized guar splits.