Resin stabilizer systems of organotin sulfur-containing compounds and alkali metal bisulfite addition products
CA 1056592 A · Owner: Dart Industries Inc. · Inventors: Ludwig, Jerome H.; Dieckmann, Dale J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A resin stabilizer composition which essentially contains:, (a) an organotin sulfur-containing compound, for example, organotin, mercaptides organotin mercapto-, acids, organotin mercaptoacid esters, organotin sulfides, organothiostannoic acids and the like, and, (b) an alkali metal bisulfite addition product, including aldehyde or, ketone alkali metal bisulfites for example, acetone sodium, bisulfite cyclohexanone sodium, bisulfite, glyoxal sodium bisulfite, formaldehyde sodium, bisulfite, acetaldehyde sodium bisulfite and cyclohexanone, potassium bisulfite. These compositions synergistically contribute to the long term heat stability of vinyl halide resins. Among other advantages, the …
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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 19, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 1996.
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Timeline
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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.