Hyperbranched polymers with latent functionality and methods of making same
Patent 6646089 Issued on November 11, 2003. Estimated Expiration Date: 
October 3, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 3, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesRadially layered copoly (amidoamine-organosilicon) dendrimers Radiation curable resins comprising hyperbranched polyesters Dendrimer-based networks containing lyophilic organosilicon and hydrophilic polyamidoamine nanoscopic domains Dendrimer-based nanoscopic sponges and metal composites Patent #: 5938934 InventorsAssigneeApplicationNo. 09/970366 filed on 10/03/2001US Classes:528/33, Silicon reactant contains two or more silicon atoms528/10, FROM SILICON REACTANT HAVING AT LEAST ONE SILICON-TO-HYDROGEN OR -CARBON BOND528/272, From di- or higher ester of a polycarboxylic acid as sole reactant, or from a polycarboxylic acid or derivative with a compound containing two or more hydroxyl groups or salts thereof528/296, Reactant contains three or more carboxylic acid groups or is derivative thereof528/302, Two or more carboxylic acid or derivatives or mixtures thereof528/31, Silicon reactant contains a silicon-to-hydrogen bond528/310, From imide- or lactam-containing compound, or from an amino-nitrogen containing carboxylic acid, or derivative of an amino-nitrogen-containing carboxylic acid528/32, Silicon reactant contains an ethylenically unsaturated group528/406, Heterocyclic reactant contains at least two heterocyclic rings having oxygen, selenium or tellurium as ring members528/44, FROM REACTANT HAVING AT LEAST ONE -N=C=X GROUP (WHEREIN X IS A CHALCOGEN ATOM) AS WELL AS PRECURSORS THEREOF, E.G., BLOCKED ISOCYANATE, ETC.528/86FROM PHENOL, PHENOL ETHER, OR INORGANIC PHENOLATEExaminersPrimary: Dawson, Robert A.Assistant: Peng, Kuo-Liang Attorney, Agent or FirmInternational ClassC08G 83/00 (20060101)AbstractHyperbranched polymers having a plurality of at least two different types of functional groups are described. Specific embodiments include hyperbranched polymers having functional groups of a first type that are substantially uniformly distributed throughout the hyperbranched polymer molecule and a second type of functional group that is substantially uniformly distributed at the terminals of the hyperbranched polymer molecule. The hyperbranched polymers having different types of functional groups are synthesized by reacting one or more monomers having functional groups that are capable of reacting during a set of polymerization conditions to form a hyperbranched polymer, wherein at least one of the monomers contains latent functional groups that are not reactive during polymerization.Other References
Field of SearchSilicon reactant contains a silicon-to-hydrogen bondSilicon reactant contains an ethylenically unsaturated group FROM SILICON REACTANT HAVING AT LEAST ONE SILICON-TO-HYDROGEN OR -CARBON BOND Silicon reactant contains two or more silicon atoms FROM REACTANT HAVING AT LEAST ONE -N=C=X GROUP (WHEREIN X IS A CHALCOGEN ATOM) AS WELL AS PRECURSORS THEREOF, E.G., BLOCKED ISOCYANATE, ETC. FROM PHENOL, PHENOL ETHER, OR INORGANIC PHENOLATE From di- or higher ester of a polycarboxylic acid as sole reactant, or from a polycarboxylic acid or derivative with a compound containing two or more hydroxyl groups or salts thereof Reactant contains three or more carboxylic acid groups or is derivative thereof Two or more carboxylic acid or derivatives or mixtures thereof From imide- or lactam-containing compound, or from an amino-nitrogen containing carboxylic acid, or derivative of an amino-nitrogen-containing carboxylic acid Heterocyclic reactant contains at least two heterocyclic rings having oxygen, selenium or tellurium as ring members | |
