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Expired Canadian patentCanada

Flame retardant heat-curable silicone compositions containing ceric hydrate

CA 1106518 A · Owner: Dow Corning Corporation · Inventors: Hays, William R.

CIPO record

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Abstract From the Canadian patent

A silicone composition cures to a flame retardant silicone elastomer by heating. The composition contains 100 parts by weight of vinyl-containing polydiorganosiloxane fluid with a viscosity of 0.2 to 30 Pa?s at 25°C. an organohydrogensiloxane in an amount sufficient to provide from 1.2 to 3 silicon-bonded hydrogen atoms for every silicon-bonded vinyl group in the composition from 5 to 100 parts by weight of reinforcing silica filler a platinum catalyst providing at least 1 part by weight of platinum for every one million parts by weight of polydiorganosiloxane fluid, and from 0.1 to 3 parts of ceric hydrate. The flame retardant silicone composition is useful for potting, encapsulating, …

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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 4, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 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.
FiledJune 3, 1977
GrantedAugust 4, 1981
Term endedAugust 4, 1998
Patent numberCA 1106518 A
Classification (IPC)C08K3/22 +1 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedJune 3, 1977Patent grantedAug 4, 1981Term endedAug 4, 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.