B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
117/195, 152/79.
B60C 13/00 (2006.01) C08J 7/04 (2006.01)
Patent
CA 1057640
ABSTRACT OF THE DISCLOSURE Pneumatic tires with colored sidewalls are produced by applying one or more elastomeric coatings thereto. A colored polyurethane elastomeric coating may be applied directly to the sidewall, but it may be applied to a primer elastomeric coating which is first applied and the colored coating is applied to it either before or after it is cure. Usually, the elastomeric coatings are applied over a barrier strip that is in the rubber sidewall to prevent stabilizer or other discoloring agent from bleeding from the sidewall and discoloring the primer coating or the colored coating or both. Barrier strips are well known in the art. They are cured into the rubber during the cure of the tire. The color of the colored coating may be produced by dyeing or pigmenting. The one or more coatings which are applied in pro- ducing the colored sidewall are sufficiently flexible to with- stand the flexing of the sidewall of the tire during prolonged use without cracking and must be firmly bonded to the sidewall and to one another so as not to separate during such prolonged flexing. Furthermore, the colored coating must resist deteriora- tion by environmental conditions such as ozone, oxygen, sunlight, etc.
249566
Firestone Tire And Rubber Company (the)
Na
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