Toughened polyoxymethylene and shaped articles produced therefrom
CA 1267474 C · Owner: Cherdron, Harald · Inventors: Kloos, Friedrich; Cherdron, Harald; Burg, Karlheinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a mixture composed essentially of polyoxymethylene (component A) a rubber-elastic, graft copolymer in which the particles have been formed from a rubber-elastic, single-phase core based on polydiene and a hard graft shell (component 3) and if, appropriate, a polymeric third component (component C). The invention also relates to a three-component mixture of the components A, B, and C, the core in the case of, B', being preponderantly or entirely composed of poly- (meth)acrylic acid ester or silicone rubber instead of polydiene. The shaped articles produced from these mixtures are particularly distinguished by good low-temperature impact strength.
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 3, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 2007.
- 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.