US PATENT SUBCLASS 523 / 501
.~.~.~ Product contains water per se or water of hydration as DNRM or admixed with other designated nonreactant material

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}
500  DF  .~.~ Process of forming a composition of an ethylenically unsaturated reactant or ethylenically unsaturated polymer admixed with nonreactive material (NRM) and a polyester whose polymer backbone was derived through the direct formation of the ester linkage, e.g., polyethylene terephthalate, polycaprolactone, etc., or product thereof {17}
501.~.~.~ Product contains water per se or water of hydration as DNRM or admixed with other designated nonreactant material {4}
502  DF  .~.~.~.~> Composition contains water-in-oil or oil-in-water mixture
503  DF  .~.~.~.~> Organic nitrogen DNRM
504  DF  .~.~.~.~> Organic chalcogen DNRM
505  DF  .~.~.~.~> Metal compound other than silicate as DNRM

DEFINITION

Classification: 523/501

Product contains water, per se, or water of hydration as DNRM or admixed with other designated nonreactant material:

(under subclass 500) Subject matter wherein the composition contains water as the designated nonreactive material either singly or in combination with other designated nonreactant materials.

(1) Note. The water, however, may function both as a reactant as well as an inert material with the proviso that its latter role is clearly specified or claimed. Thus, if a composition calls for the use of Al2[end subscrpt](SO4)3[end subscrpt] (alum) or MgSO4 as a DNRM, no weight is given to the fact that these materials are used in their hydrated state. The hydrate must be claimed or its importance stated. Water which accompanies a chemical reactant used in reacting with any or all of the components proper for this subclass is not considered to be a designated nonreactive material. For example, the hydrolysis of hydroxy-terminated polyethylene glycol terephthalate with aqueous sodium hydroxide and subsequently blended with polybutadiene will not produce a composition containing an inert material.