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Expired Canadian patentCanada

Process for preparing a one-component organopolysiloxane composition

CA 1209742 A · Owner: Sws Silicones Corporation · Inventors: Mcafee, Richard C.; Shen, Ming

CIPO record

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

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Abstract From the Canadian patent

Abstract of the Disclosure A process for preparing a one-component organopolysiloxane composition which comprises heating a catalyst which is capable of promoting the addition of silicon-bonded hydrogen to aliphatically unsaturated groups in the presence of an organopolysiloxane having aliphatically unsaturated groups and/or a filler at an elevated temperature and thereafter adding an organosilicon compound having silicon-bonded hydrogen to the mixture after it has cooled. The resultant composition which, can be stored at room temperature can be crosslinked by heating to a temperature of about 100°C or more.

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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 August 12, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 24, 1983
GrantedAugust 12, 1986
Term endedAugust 12, 2003
Patent numberCA 1209742 A
Classification (IPC)C08G77/08 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedOct 24, 1983Patent grantedAug 12, 1986Term endedAug 12, 2003

Sources & verification

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