Haloaryl halobenzenesulfonate flame retardants
CA 1100985 A · Owner: Velsicol Chemical Corporation · Inventors: Albright, James A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
of Disclosure, Disclosed are haloaryl halobenzene sulfonates of the formula, I, wherein X and X' are each independently selected halogen preferably chlorine or bromine; n is a integer of from 1 to 5 and m is an integer from 1 to 4, provided that the sum of n plus m is an integer of from 4 to 9; and R is selected from hydrogen halogen(preferably chlorine and bromine) and, III, wherein Y and Y' are each independently selected halogen preferably chlorine and bromine, m' is an integer from 1 to 4 and n' is an integer of from 1 to 5, provided that m'+n' is from 4 to 9 and Z is an alkylene or alkylidene containing from 1 to 6 carbon atoms. Also disclosed are polymeric compositions containing …
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 12, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.