Cement slurries having pyranose polymers

1. A composition comprising:

a cement component; and

an amidyl pyranose component comprising an amidyl pyranose polymer represented by Formula I or II:

wherein each R 1 is individually H, cyano, or C 1 -C 8 alkyl.

2. The composition of claim 1 , wherein the cement component is Portland cement, a calcium sulfate, a calcium aluminate, a calcium silicate, lime or grit.

3. The composition of claim 1 , wherein the amidyl pyranose component comprises an aqueous solution.

4. The composition of claim 3 , wherein the aqueous solution contains about 20 wt % of the amidyl pyranose polymer.

5. The composition of claim 1 , wherein each R 1 is individually H, cyano, methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, 2-ethylhexyl, or isomers thereof.

6. The composition of claim 1 , wherein each R 1 is individually H or methyl.

7. The composition of claim l, wherein the amidyl pyranose polymer further comprises a repeat unit that includes a cross-linking moiety.

8. The composition of claim 7 , wherein the amidyl pyranose polymer is represented by Formula III or IV:

9. The composition of claim 1 , where the amidyl pyranose polymer further comprises a repeat unit that includes a non-pyranose acrylamide moiety, wherein the amidyl pyranose polymer is represented by Formula V or VI:

wherein.

R 2 is C 1 -C 8 alkyl, C 1 -C 8 heteroalkyl, OR 3 , or NR 4 R 5 ;

R 3 is C 1 -C 8 alkyl or poly(alkylene glycol);

R 4 is H, C 1 -C 8 alkyl, or C 1 -C 8 heteroalkyl; and

R 5 is H, C 1 -C 8 alkyl, or C 1 -C 8 heteroalkyl.

10. The composition of claim 9 , wherein R 2 is OR 3 where R 3 is poly(alkylene glycol).

11. The composition of claim 10 , wherein the poly(alkylene glycol) is poly(ethylene glycol) or polypropylene glycol).

12. The composition of claim 9 , wherein R 2 is nitrogen-bound taurine or a salt thereof.

13. The composition of claim 1 further comprising an aggregate component.

14. The composition of claim 1 further comprising water.

15. A method comprising combining an amidyl pyranose component with a cement component to form a modified cement mixture, wherein the amidyl pyranose component comprises an amidyl pyranose polymer represented by Formula I or II:

wherein each R 1 is individually H, cyano, or C 1 -C 8 alkyl.

16. The method of claim 15 , wherein the combining further comprises combining an aggregate component.

17. The method of claim 15 , wherein the combining further comprises combining an aqueous component.

18. The method of claim 15 , wherein the cement component is Portland cement, a calcium sulfate, a calcium aluminate, a calcium silicate, lime or grit.

19. The method of claim 15 , wherein the amidyl pyranose component is in an aqueous solution.

20. The method of claim 19 , wherein the aqueous amidyl pyranose component is about 20% by weight amidyl pyranose polymer solution.