Patent Yard Sign in
Expired Canadian patentCanada

Method for applying a silicone release coating and coated article therefrom

CA 1101366 A · Owner: Dow Corning Corporation · Inventors: Bokerman, Gary N.; Gordon, David J.

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

Solid substrates are provided with a cured silicone release coating by applying certain mercaptoalkyl-containing triorganosiloxane-endblocked polydiorganosiloxane fluids to the surface of the substrate and exposing the applied fluid to energetic radiation to rapidly cure and bond the fluid to the solid substrate. For example a mixture of, benzophenone and a trimethylsiloxane-endblocked copolymer of dimethylsiloxane units and methylmercaptopropylsiloxane units, when applied to kraft paper and cured with ultraviolet light, provides premium release of aggressive acrylic adhesive from the surface of the coated paper.

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 19, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 12, 1978
GrantedMay 19, 1981
Term endedMay 19, 1998
Patent numberCA 1101366 A
Classification (IPC)C09J7/04 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedSep 12, 1978Patent grantedMay 19, 1981Term endedMay 19, 1998

Sources & verification

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