US PATENT SUBCLASS 507 / 230
.~.~.~.~ Polymer contains vinyl alcohol unit

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


507 /   HD   EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY

200  DF  WELL TREATING {4}
203  DF  .~ Contains organic component {17}
219  DF  .~.~ Organic component is solid synthetic resin {2}
221  DF  .~.~.~ Resin is polymer derived from ethylenic monomers only (e.g., maleic, itaconic, etc.) {6}
230.~.~.~.~ Polymer contains vinyl alcohol unit

DEFINITION

Classification: 507/230

Polymer contains vinyl alcohol unit:

(under subclass 221) Compositions wherein the polymer contains a vinyl alcohol unit.

(1) Note. In the absence of information to the contrary, a hydrolysis product of polyvinyl acetate is polyvinyl alcohol and is provided for herein.