Paper coating composition with environmentally acceptable fluid polymer suspension
CA 2493420 A1 · Owner: Melbouci, Mohand · Inventors: Walsh, L. Drake; Melbouci, Mohand
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a light white mineral oil-based fluidized polymer suspension (FPS) composition for use as a rheology modifier in paper coatings. It has been found that by using a selected composition of low viscosity oil as a carrier, high solids content and environmental friendly fluidized polymer suspensions of water soluble cellulose derivatives synthetic water soluble , polymers, guar gum and derivatives starch and derivatives and mixtures , thereof can be prepared. The FPS of the present invention was found to provide unexpected beneficial performance properties when added as a rheology modifier to a paper coating containing standard binders pigment, and water. , 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 September 3, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 2025.
- 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.