Patent Yard Sign in
Expired Canadian patentCanada

Moisture-hardening binder compositions, a process for their production and their use

CA 1304186 C · Owner: Wamprecht, Christian · Inventors: Blum, Harald; Pedain, Josef; Wamprecht, Christian

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

Abstract of the disclosure, Binder compositions comprising A) copolymers having a molecular weight of from 1500 to 75000 of maleic acid anhydride with other selected olefinically unsaturated monomers, B) organic polyamines with aldimine- and/or ketimine-blocked amino groups and, optionally reaction products containing amide groups of (i) copolymers A) with (ii) polyamines having free and blocked amino groups, a process for the production of these compositions by mixing components A) and B) and optionally partially blocked polyamines which react with a part of component A) under formation of component C) as well as the use of these binder compositions as binder in lacquers coating compo-, …

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 June 23, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 30, 1988
GrantedJune 23, 1992
Term endedJune 23, 2009
Patent numberCA 1304186 C
Classification (IPC)C08L35/00 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 30, 1988Patent grantedJune 23, 1992Term endedJune 23, 2009

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.