Process for preparing readily dispersible water-soluble cellulosic polymers
AssigneeThe Dow Chemical Company
InventorsMichael R. Smith, Gary J. Schulz, Kenneth C. Reibert
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Abstract
An improved process for surface treating water soluble cellulosic polymers with crosslinking agents to provide products which are more readily dispersible in cold water, and have longer viscosity delay times than can be achieved with polymers treated in low intensity mixers, such as ribbon blenders, comprising distributing the crosslinking agent using a continuous, high intensity mixer, followed by heating to facilitate surface crosslinking. This process also allows for a reduced level of crosslinking chemicals to be used.
Claims6
A process for treating the surface of a cellulosic polymer to increase its dispersability in water which comprises:
- mixing said polymer with liquid glyoxal in a ratio of glyoxal to polymer of from about 0.0025 to about 0.035 in a high intensity mixer followed by heating.
Dependencies are inferred from the claim text.