Polyester group containing polysiloxanes for lacquers and molding compositions
CA 1283493 C · Owner: Haubennestel, Karlheinz · Inventors: Haubennestel, Karlheinz; Bubat, Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Lacquers and molding compositions containing an anti-adhesive character producing and lubricity increasing amount of a polyester-containing polysiloxane corresponding to the formula, (I), wherein A, B and D each represent -CH3 or -Z-R-Q; Z represents an alkylene group with 1 to 11 carbon atoms -(CH2)2SCH2- or -(CH2)3NHCO-; R represents an aliphatic cycloaliphatic or aromatic group containing at least 3 carboxylate ester groups and having an average molecular weight ?? of 300 to 3,000; Q represents a reactive group capable of chemically reacting with a resin component of the lacquer or molding composition; x represents a number from 4 to 150; y represents a number from 1 to 6 in which an, …
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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 April 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 23, 2008.
- 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.