Acid group-containing, thermostable, hydrophilic condensation products of aldehydes and ketones
CA 1188032 A · Owner: Skw Polymers Gmbh · Inventors: Aignesberger, Alois; Plank, Johann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Acid group-containinq, thermostable hydrophilic, condensation products of aldehydes and ketones The present invention provides acid groupcontaining, thermostable, hydrophilic condensation products of aldehydes and ketones, wherein the ketones used are symmetrical or asymmetrical ketones with acyclic aliphatic, araliphatic and/or aromatic radicals, at least one radical being non-aromatic. The present invention also provides processes for the production of these condensation products which can be used as thickening agents retention, agents, surface-active agents dispersion agents, and/or liquefying agents especially in aqueous, systems.
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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 May 28, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 28, 2002.
- 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.