Amphiphilic monomers with mixed-chain structure and polymers and film composed of at least one monomolecular layer thereof
CA 2006421 A1 · Owner: Scheunemann, Ude · Inventors: Scheunemann, Ude; PRAß, WERNER; Lupo, Donald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract, Amphiphilic monomers with mixed-chain structures and polymers and films composed of at least one monomolecular layer thereof, Amphiphilic monomers with mixed-chain structures of the formula, in which, Y denotes -O- or -NH- X denotes a group of the formula -(CH2)n- or -(CH2-O- CH2)n-, 1 denotes an integer from 0 to 10 n denotes an integer from 1 to 10, Rl denotes hydroqen methyl, chlorine, cyano, fluorine or, bromine R2 denotes C1-C24-alkyl or C1-C24-fluoroalkyl and R3 denotes C8-C24-alkyl or C8-C24-fluoroalkyl with the, proviso that the groups R2 and R3 contain a different number of carbon atoms. The monomers are polymerized on their own or together with other comonomers. The …
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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 December 21, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 21, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 21, 2011.
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