Method of chemically bonding antioxidants into polymeric materials
CA 1076744 A · Owner: Goodyear Tire And Rubber Company (The) · Inventors: Parker Dane K.; Parks, Carl R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
INVENTORS: Carl R. Parks and Dane K. Parker INVENTION: A METHOD OF CHEMICALLY BONDING ANTIOXIDANTS INTO POLYMERIC MATERIALS, Abstract of the Disclosure A process for forming a polymer resistant to degradation comprising chemically bonding unsaturated antioxidants into polymeric materials by adding the antioxidant to the polymeric material, introducing a free radical initiator and causing the initiator to generate free radicals and bond the antioxidant to the polymeric material. The polymers containing the bound antioxidant can be used in carpet backing, solvent hose oil seals, and O-rings.
Read the whole patent
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 April 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 29, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.