Antiagers and polymers containing them
CA 1236846 A · Owner: Bayer Aktiengesellschaft · Inventors: Szentivanyi, Zsolt; Buysch, Hans-Josef; Witte, Josef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Antiagers and polymers containing them Compounds corresponding to the following general formula:, wherein, R0 represents H or, together with R1 represents -CO- when, X represents -CO- or together with R2, represents -CO-, when X represents -CH2-CO a residue of R, R1 and R2, H, C1-C4 alkyl aryl, COOR5 or, when, Ro represents H and X represents -COand the other residues R, R1 and R2 represent H; R3 represents H or CH3;, R4 represents C7-C20 aralkyl; R5 represents H, C1-C4 alkyl or C6-C12 aryl; X represents a residue -(CH2)nCO-, -(CH2)nSO2 -CH2-, -CH2O-CO-, m represents 1 or 2; and n represents 0 or 1; are suitable for use as incorporable antiagers for polymers particularly nitrite rubber.
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 May 17, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2005.
- 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.