Polyurea reaction injection molded body panels
CA 2092677 A1 · Owner: Texaco Chemical Company · Inventors: Rice, Doris M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
POLYUREA REACTION INJECTION MOLDED BODY PANELS D#81. 163 -F, ABSTRACT OF THE DISCLOSURE A reinforced reaction injection molded polyurea elastomer with higher impact strength is disclosed. The RRIM polyurea elastomer comprises an (A) component which includes a polyisocyanate and a (B) component which comprises (1) an amine terminated polyoxyalkylene polyol; (2) a chain extender in an amount, necessary to provide a polyurea elastomer with a neat modulus of between about 20,000 and about 60,000; and (3) a filler material in an amount sufficient to raise, the the modulus of the polyurea elastomer to a filled modulus of between about 200,000 and about 300,000 psi. A method of making the RRIM …
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 March 12, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 12, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2015.
- 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.