US PATENT SUBCLASS 523 / 326
.~.~ Adding steam or hot water (T at least 60 degrees C, i.e., 140 degrees F)

Current as of: June, 1999
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523 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF {71}
326.~.~ Adding steam or hot water (T at least 60 degrees C, i.e., 140 degrees F) {1}
328  DF  .~.~.~> Removal of material by treatment with hot water or steam, e.g., steam stripping, etc.

DEFINITION

Classification: 523/326

Adding steam or hot water (T> 60 deg.C, i.e., 140 deg.F):

(under subclass 1) Process of treating or forming a desired or intentional composition wherein steam or hot water directly contacts said composition.

(1) Note. The hot water is hot water, per se, and not a hot aqueous solution or mixture.

(2) Note. Hot water is defined as having a temperature greater than about 60 deg.C, (i.e., 140 deg.F).

SEE OR SEARCH CLASS

528, Synthetic Resins or Natural Rubbers,

499+, for a process of contacting a solid polymer or resinifiable intermediate condensation product with water.