Utilization of water-dilutable condensation resin as water-dilutable dispersing agent for pigment concentrates
CA 2532643 C · Owner: Cytec Surface Specialties Austria Gmbh · Inventors: Hobisch, Gerald; Morre, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the utilization of water-dilutable condensation resin AB as , dispersing agent for pigments, wherein the condensation resins have an acid value , ranging from 20 mg/g to 180 mg/g and are obtained by condensation of component A , containing acid groups with an acid value ranging from 30 mg/g to 240 mg/g which are , selected from amongst the group consisting of copolymers of olefinically unsaturated , monomers and by dimerization or oligomerization of compounds obtained from unsaturated aliphatic carboxylic acids and polyesters B containing hydroxyl groups with , a hydroxyl value ranging from 20 mg/g to 300 mg/g and a number-average molar mass , Mn ranging from …
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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 July 13, 2004 and granted December 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.