Filler-containing molding composition and process for its manufacture
CA 1136791 A · Owner: Hoechst Aktiengesellschaft · Inventors: Van Spankeren, Ulrich; Herwig, Walter; Burg, Karlheinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the disclosure: In filler-containing molding compositions a very good compatibility between the hydrophilic filler and the hydrophobic polymer matrix is obtained by using as adhesion promotor alkali metal salts of alkyl or alkenyl-sulfonic acids or alkyl sulfates, the derivatives thereof and the acids on which the salts are based. The flow properties of the molding compositions and the mechanical properties of the shaped articles made therefrom are improved.
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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 November 30, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 30, 1999.
- 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.