Microsuspension process for preparing solvent core sequential polymer dispersion
CA 1285092 C · Owner: Rohm And Haas Company · Inventors: Redlich, George Harvey; Novak, Ronald William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
George H. Redlich and Ronald W. Novak MICROSUSPENSION PROCESS FOR PREPARING SOLVENT CORE SEQUENTIAL POLYMER DISPERSION, DN 84-36 ARS/rvp ABSTRACT OF THE DISCLOSURE, The present invention relates to a sequential polymerization process for preparing a water-insoluble dispersion of core/shell particles. In one embodiment the process may be employed to produce a particulate dispersion useful in making water-based coating compositions wherein on drying the particulate dispersion serves as an opacifying agent. In another embodiment the process may be employed to microencapsulate a hydrophobic target material such as a biocide, or herbicide.
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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 June 18, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 2008.
- 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
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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.