Coating or plastic compositions specialized for use in plugging or stopping leaks or punctures.
(1) Note. Most of the patents in this subclass are drawn to compositions for stopping leaks in automobile radiators and in pneumatic tires.
SEE OR SEARCH CLASS
152, Resilient Tires and Wheels,
502+, for pneumatic tire leak-stopping compositions for the self-healing of tire punctures.
252, Compositions,
72, for heat exchange, low-freezing or pour point or high boiling compositions containing Leak-stopping agents.
428, Stock Material or Miscellaneous Articles,
912, (a cross-reference art collection) for a product embodying a puncture healing layer. 520, Synthetic Resins or Natural Rubbers, appropriate subclasses, particularly Class 523,
166, for a composition containing a synthetic resin or natural rubber as a puncture sealant for a pneumatic tire or for a composition used in the emergency repair of vehicular tires or to processes of preparing said composition.
