Method of manufacturing composite aqueous dispersion and aqueous dispersion capable of forming composite film
CA 2253844 A1 · Owner: National Starch And Chemical Investment Holding Corporation · Inventors: Asaoka, Seiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to aqueous resin which may be used in aqueous coating agent, adhesive, paint base, (binder) resin or modifier thereof and relates also to a method of manufacturing the resin. The present invention provides a method of manufacturing composite aqueous dispersion and aqueous dispersion resin, which are capable of solving the drawbacks of the convention which arise particularly when aqueous polyurethane resin is to be modified by aqueous acrylic resin, namely, the low modifying effect non-uniformity of the , film formed and troublesomeness of manufacturing the aqueous dispersion resin attributable to, e.g. the low compatibility and non-abundance of the …
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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
- Filed May 8, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 8, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 8, 2019.
- 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.