COPOLYMERS OF .alpha..beta.-UNSATURATED DICARBOXYLIC ACID ESTERS, PROCESSES FOR THEIR PREPARATION AND THEIR USE
CA 1238448 A · Owner: Akzo N.V. · Inventors: Frassek, Karl-Heinz; Beck, Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to copolymers of ?-.beta.unsaturated dicarboxylic acid esters and ?-olefins which are built up from ?-olefins having 10-16 C-atoms and from ?-.beta.-unsaturated dicarboxylic acid esters the alcohol, components of which are straight chained and/or branched chain mono-alcohols having 3-10 C-atoms and are if, necessary, cross-linked, the "pour point" lying between -60° and 0°C, the copolymers are used as synthetic lubricating oils, mineral-oil additives lubricant, additives, and as lubricants for the processing of thermoplastic synthetic materials during forming.
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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 June 21, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 21, 2005.
- 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.