Ethylene-difunctional olefin-alkyl vinyl terpolymer emulsions
Patent 3984368 Issued on October 5, 1976. Estimated Expiration Date: 
October 5, 1993. 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 5, 1993. 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 ReferencesInventorsAssigneeApplicationNo. 543512 filed on 01/23/1975US Classes:524/762, Two or more ether linkages in the hydroxyl group bearing molecule524/745, Sulfate, sulfonate ester, sulfonic acid, or salt thereof524/808, Monomer contains nitrogen atom as part of a heterocyclic ring524/811Monomer contains chalcogen atom as part of heterocyclic ringExaminersPrimary: Welsh, M. J.AbstractStable emulsions of terpolymer particles are formed by polymerizing ethylene, a difunctional olefin such as maleic anhydride and an alkyl vinyl monomer having from about 3 to about 18 carbon atoms in an aqueous medium in the presence of a water soluble persulfate initiator, and a nonionic and/or anionic emulsifier. The resulting novel stable emulsions contain particles of terpolymer of the three monomers which will provide film coatings of increased flexibility and toughness. Furthermore, the emulsions have excellent compatibility when blended with conventional polish formulations. | |
