Process for controlling molecular weight distribution of latex polymers
CA 1083743 A · Owner: Union Carbide Corporation · Inventors: Bassett, David R.; Hoy, Kenneth L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Particle morphology and molecular weight distribution of latex polymers is controlled by a process wherein a primary polymerizable feed composition (a) a crosslinker and (b) a chain transfer agent during at least a portion of the period of addition of said composition to the polymerization zone is fed into a, polymerization zone while simultaneously feeding a secondary polymerizable feed composition containing chain transfer agent to the primary polymerizable feed composition and thus continually varying the compositional content of the primary polymerizable feed composition. S P E C I F I C A T I O N 1.
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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, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 1997.
- 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.