(under the class definition) Processes or compositions, or in which a resin is subjected to a qualitative, or quantitative chemical analysis.
(1) Note. Resin is defined coterminously with the Class 520 definition.
(2) Note. Measurement of physical property (i.e., electrical resistivity) of an on going polymerization process to obtain optimum operating conditions is classified below under technique used.
(3) Note. Resin polymer stability tests, i.e., temperature, light, oxidative, reductive stability, are classified with the polymer.
(4) Note. A process investigating the hardening time of a resin is presumed to be a chemical testing process in the absence of a clear showing to the contrary.
SEE OR SEARCH THIS CLASS, SUBCLASS:
4, for method and materials for chemically determining the crystallinity of a polymer. 72, for silicon containing polymers.
