Stabilizer for clear, impact-modified pvc
CA 1298075 C · Owner: Ge Specialty Chemicals, Inc. · Inventors: Valdiserri, Leo L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition comprising a dioctyl tin mercaptide a zinc salt of a fatty acid such as zinc stearate and a conventional phosphite ester stabilizer is effective in stabilizing PVC resins. The stabilized resins exhibit excellent initial color and stability under processing conditions.
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 March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
- 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.