Vinyl chloride resins and compositions incorporating such resins
CA 1302004 C · Owner: Harvey, James R. · Inventors: Smith, Donald F.; Harvey, James R.; Colon, Ismael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel vinyl chloride copolymers including a hydroxyalkyl acrylate or methacrylate or allyl alcohol, an acid functionality from carboxylic acid containing monomers and optionally an epoxy containing vinyl monomer in selected proportions provide suitable binder resins for applications such as magnetic recording media, imparting enhanced dispersion and magnetic property characteristics while also having desirable rheological characteristics and, when the epoxy-containing vinyl monomer is used, desirable thermal stability.
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 May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 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.