초록 ▼

Disclosed is a method for producing a water-swellable, water-insoluble chitosan salt having improved absorption properties. The method involves forming a mixture of a chitosan, water, an acid, and, optionally, a crosslinking agent, recovering the formed chitosan salt from the mixture and, optionally

Disclosed is a method for producing a water-swellable, water-insoluble chitosan salt having improved absorption properties. The method involves forming a mixture of a chitosan, water, an acid, and, optionally, a crosslinking agent, recovering the formed chitosan salt from the mixture and, optionally, treating said recovered chitosan salt with heat or under humid conditions.

대표청구항 ▼

A process for preparing a water-swellable, water-insoluble chitosan salt, the process comprising: forming a mixture comprising a water-insoluble chitosan, water, and an add selected from the group consisting of monobasic acids having a pKa1 less than about 6 and multibasic acids having a pKa1 less t

A process for preparing a water-swellable, water-insoluble chitosan salt, the process comprising: forming a mixture comprising a water-insoluble chitosan, water, and an add selected from the group consisting of monobasic acids having a pKa1 less than about 6 and multibasic acids having a pKa1 less than about 6 and all pKan greater than about 5.5, wherein n is an integer greater than 1, wherein the mixture has an equilibrium pH between about 2 and about 6.5, and wherein the mixture is prepared under conditions effective to form a water-soluble chitosan salt, wherein the water-soluble chitosan salt dissolves into the water to form a homogeneous mixture; and recovering the chitosan salt from the homogeneous mixture, wherein the recovered chitosan salt is water swellable and water insoluble and exhibits an initial Absorbency Under Load value of at least about 14 grams per gram.