Water in oil dispersions of hydrophilic polymers based on acrylic acid partially or totally converted into the salt form with ammonia
CA 1330676 C · Owner: Marchant, Dominique · Inventors: Cabestany, Jean; Marchant, Dominique
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Water in oil dispersions of hydrophilic polymers based on acrylic acid partially or totally converted into the salt form with ammonia are disclosed for use in formulating printing pastes for colour printing. The water in oil dispersions are characterized by 65 to 75% of an aqueous dispersed phase, 3 to 7% of an emulsifying system having overall an HLB value greater than 7 and the, remainder (up to 100%) being an oil phase. Approximately 35 to 50% of the aqueous dispersed phase is constituted by a hydrophilic polymer having a molecular weight greater than 3,000,000 formed, in molar proportions from 0 to 50%, acrylamide, 0.008 to 0.1% bisacrylamidoacetic acid partially or totally converted …
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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 July 12, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 12, 2011.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.