Molding compound for molded parts with high weather resistance
CA 2565476 C · Owner: Roehm Gmbh · Inventors: Mohrmann, Martin; Schultes, Klaus; Hoess, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A moulding compound comprises a copolymer (I)a) produced by polymerisation of , 90-100 % by weight methylmethacrylate styrene and malic acid anhydride, and optionally 0-10 % by weight additional monomers which can be copolymerised with methylmethacrylate, a (co)polymer (II)b) produced by polymerisation of , 80-100 % by weight methylmethacrylate and optionally 0-20 % by weight additional monomers which can be copolymerised with methylmethacrylate and , has a solution viscosity in chloroform at 25 ~C (ISO 1628 Part 6) of 50 to 55 ml/g, as well as c) optional conventional additives auxiliary agents and/or , fillers. The moulding compound is characterised in that the copolymer (I) has a …
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
- Filed April 7, 2005 and granted October 16, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 7, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.