Crosslinked alginate-based gels for matrix conformance

Details Crosslinked alginate-based gels for matrix conformance Crosslinked alginate-based gels for matrix conformance

1994-11-21

1996-10-08

Nutter, Nathan M.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523131, 507209, 507211, 507219, 507221, 507224, 507225, 507230, 507269, 507270, 507271, 507272, 507277, 507922, C09K 700

Patent

active

055631860

ABSTRACT:
A composition of matter for matrix conformance formed from an aqueous solution of an alginate polysaccharide and a method of forming an alginate polysaccharide gel. A Group IIA cation, Fe.sup.2+, Fe.sup.3+, Al.sup.3+, Mn.sup.2 +, Zn.sup.2+, a dialdehyde, or a diamine may be used to crosslink the resulting alginate gel. The gel may also comprise a modifier, such as a polyvinyl alcohol, a polycarboxylic acid, or a polyacrylamide. The rate and extent of crosslinking are controlled by varying the alginate molecular weight, the alginate concentration, or the type and concentration of crosslinker, or by adding a sequestering agent such as EDTA or citrate.

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