Moulding compositions which are stable to alcohols and boiling water
CA 2027965 A1 · Owner: Wenzel, Markus · Inventors: Panoch, Hans-Joachim; Bartmann, Martin; Wenzel, Markus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Moulding compositions comprising an amorphous copolyamide prepared by polycondensation of terephthalic acid and/or isophthalic acid with 10-70 mol-% of decamethylenediamine 10-80, mol-% if trimethylhexamethylenediamine and 10-50 mol-% of bis(4-aminocyclohexyl)methane. The moulding compositions according to the invention are stable to alcohols and boiling water and are useful in manufacturing of articles where the stability to alcohols is necessary, such as spectacle frames or inspection windows.
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 October 18, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 2012.
- 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.