Polysaccharides, methods for preparing such polysaccharides...

Details Polysaccharides, methods for preparing such polysaccharides... Polysaccharides, methods for preparing such polysaccharides...

C - Chemistry, Metallurgy

08

B

260/217, 31/26

C08B 11/04 (2006.01) C08B 11/20 (2006.01) C08B 15/00 (2006.01) C09K 8/68 (2006.01) C09K 8/88 (2006.01) C09K 8/90 (2006.01)

Patent

CA 1246555

- 56 - POLYSACCHARIDES, METHODS FOR PREPARING SUCH POLYSACCHARIDES AND FLUIDS UTILIZING SUCH POLYSACCHARIDES ABSTRACT OF THE DISCLOSURE Water-soluble polysaccharides, including cellulose ethers, containg pendent vicinal dihydroxy structure capable of cis geometry, which upon crosslinking with a polyvalent metal, have shear-thermal stability characteristics of at least about 30 at 250°F., are useful in oilfield applications.

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