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Expired Canadian patentCanada

Process for the preparation of organopolysiloxane moulding compositions which give fine-pored elastomeric foam mouldings

CA 1114100 A · Owner: Bayer Aktiengesellschaft · Inventors: Schmidt, Hermann; Schnurrbusch, Karl; Sattlegger, Hans

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Abstract From the Canadian patent

Abstract of the Disclosure, The instant invention relates to a process for the production of a plastic organopolysiloxane moulding composition which can be stored under pressure and with exclusion of moisture, and which, on release of the pressure and under the action of water or atmospheric moisture, is converted into an elastomeric fine-pored foam, moulding or foam coating which comprises forming a, mixture of an .alpha..omega.-dihydroxypolydiorganopolysiloxane with a silicon-containing crosslinking agent introducing the, mixture into the inner container of a two-container pack which consists of a rigid outer container and a flexible inner container located within the outer container and …

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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 December 8, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 8, 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.
FiledAugust 1, 1979
GrantedDecember 8, 1981
Term endedDecember 8, 1998
Patent numberCA 1114100 A
Classification (IPC)C08J9/00 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedAug 1, 1979Patent grantedDec 8, 1981Term endedDec 8, 1998

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