Carbon black for low hysteresis rubber compositions
CA 1103897 A · Owner: Phillips Petroleum Company · Inventors: Kraus, Gerard; Hunt, Harold R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A carbon black is provided which has a unique relationship between tint, surface area, and structure. The relationship is defined by T ? 50 + 1.057(CTAB)-0.002745(CTAB)2-0.2596(DBP)-0.201 (N2SA-CTAB). wherein T is tint measured per ASTM 3265-75; CTAB is surface area measured per Rubber Chemistry and Technology, 44 1287 (1971); DBP is structure, measured per ASTM D-2414-70 method B; and N2SA is surface area measured per, ASTM D-3037-71T. The carbon black is usefully compounded into rubber to provide low hysteresis rubber goods. The carbon black is produced by radial injection of feedstock into a mass of combustion gases immediately downstream of an abrupt expansion in the confining wall of a …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 1998.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.