Process for the preparation of a hydrogel which is largely free

Details Process for the preparation of a hydrogel which is largely free Process for the preparation of a hydrogel which is largely free

1987-07-27

1988-12-27

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

523315, 523332, 524833, 524916, 528493, 528495, 528496, 528499, C08F 600

Patent

active

047941669

ABSTRACT:
A polymer hydrogel substantially free from monomers and oligomers is prepared by contacting a previously prepared polymer hydrogel with a single-phase mixture of water and a solvent and then separating the mixture of water and solvent from the hydrogel.

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