Paper size
June 12, 2011. 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 References 3720733 Process for the production of a substantially equimolecular copolymer of maleic acid anhydride and diisobutylene Oil recovery by waterflooding employing an anionic polymeric surfactant containing recurring succinimide or succinamide groups Low-foam surface sizing agents for paper which contain copolymeric _maleic anhydride semi-amides Surface sizing agents for paper Aqueous dispersions of graft polymers or copolymers, a process for their production and their use as hydrophobizing and oleophobizing agents for textiles Copolymers based on maleic anhydride and , ଲ-unsaturated compounds a process for their preparation and their use as paraffin inhibitors Modified acrylamide polymers used as scale inhibitors Polymers from ethylenic monomers Polymers of diisobutylene-sulfonate alkane maleic acid derivatives Patent #: 5013794 InventorsApplicationNo. 713923 filed on 06/12/1991US Classes:525/282, Imide162/164.5, Sulfur containing525/193, Agent contains an ethylenic group525/194, Agent is an organic material525/203, Solid polymer derived from ethylenic reactant containing a heterocyclic nitrogen525/207, Heterocyclic reactant contains anhydride group525/213, Solid polymer derived from chlorine-containing reactant other than vinyl(idene) chloride525/302, Oxygen atom is part of a carboxylic acid ester group525/309, Ester derived from an unsaturated carboxylic acid is reacted in the presence of a solid polymer526/201, Material contains previously formed normally solid polymer which is distinct from polymer to be formed and is a polymer formed from at least one ethylenic monomer526/203, Normally solid polymer is formed from ethylenically unsaturated dicarboxylic acid, ester, salt, or anhydride thereof526/213, Material contains carboxylic acid, salt, ester, or anhydride thereof526/219.5, Ingredient contains water, e.g., an emulsion, dispersion, etc.526/225Organic compound contains hexavalent S atom, e.g., organosulfate, sulfonate, etc.ExaminersPrimary: Seidleck, James J.Assistant: Warzel, Mark L. Attorney, Agent or FirmForeign Patent References
International ClassesC08F 002/24C08F 020/10 C08F 022/06 Foreign Application Priority Data1990-06-21 DEAbstractEmulsion polymers which are prepared by free-radical polymerisation of monomers in the presence ofa) polymers of the formulae ##STR1## wherein the radicals have the meanings given in the description, and b) low-molecular anionic emulsifiers,are outstandingly suitable as surface sizes for paper. They are distinguished by a low tendency to foaming and by a wide application spectrum.Other References
Field of SearchImideAgent contains an ethylenic group Ethylenic reactant contains nitrogen heterocycle, e.g., pyridine, diazines, etc. Polymer mixture of two or more solid polymers derived from ethylenically unsaturated reactants only; or mixtures of said polymer mixture with a chemical treating agent; or products or processes of preparing any of the above mixtures Solid polymer derived from ethylenic reactant containing a heterocyclic nitrogen Polymer derived from ethylenic reactants only mixed with ethylenic reactant Oxygen atom is part of a carboxylic acid ester group | |
