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公开(公告)号：US4701507A
公开(公告)日：1987-10-20
申请号：US869476
申请日：1986-06-02
CPC分类号： C08F2/22
摘要： A process for the emulsion copolymerization of functionalized monomers wherein the improvement comprises the use of methyl isobutyl ketone (MIBK) as a solvent and elevated soap levels in the polymerization.
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公开(公告)号：US5247034A
公开(公告)日：1993-09-21
申请号：US956220
申请日：1992-10-05
申请人： Robert D. Mate , Gary L. Burroway
发明人： Robert D. Mate , Gary L. Burroway
IPC分类号： C08F2/24 , C08F212/04 , G03G9/087 , G03G9/097
CPC分类号： G03G9/08711 , C08F212/04 , G03G9/08702 , G03G9/08737 , G03G9/09775 , Y10S430/105
摘要： This invention is based upon the discovery that the characteristics of toner resins made by emulsion polymerization can be improved by utilizing amino acid soaps. Such amino acid soaps are typically salts of alkyl sarcosinates, such as ammonium lauryl sarcosinate and sodium lauryl sarcosinate. Toner resins which are made utilizing such amino acid surfactants do not exhibit significant electrical charge effects from the residual level of amino acid soap in the resin compared to resins made using other soap types, such as rosin acid soaps, fatty acid soaps, and the like. They also generally contain a lower level of ash since salts do not need to be used in their coagulation. As a result of the low level of ash, the toner resin made from the amino acid soap exhibits excellent resistance to moisture sensitivity and adsorption. This feature gives the toners made from these resins better electrical charge stability compared to resins made from other soaps since adsorbed moisture is known to neutralize electrical charges. This invention more specifically discloses a process for preparing a polymer which is particularly useful as a toner resin, which comprises (1) emulsion copolymerizing a vinyl aromatic monomer and a second monomer selected from the group consisting of conjugated diene monomers and an acrylate monomer selected from the group consisting of alkyl acrylate monomers and methacrylate monomers in the presence of an amino acid soap to produce the polymer; and (2) recovering the polymer from the aqueous emulsion.
摘要翻译： 本发明基于通过利用氨基酸皂改善通过乳液聚合制备的调色剂树脂的特性的发现。 这种氨基酸皂通常是烷基肌氨酸盐的盐，例如月桂基肌氨酸铵和月桂基肌氨酸钠。 使用这种氨基酸表面活性剂制成的调色剂树脂与使用其它皂类（如松香酸皂，脂肪酸皂等）制成的树脂相比，不会显示树脂中氨基酸皂残留量的显着的电荷效应 。 它们通常还含有较低水平的灰分，因为不需要在其凝结中使用盐。 作为灰分低的结果，由氨基酸皂制成的调色剂树脂具有优异的耐潮湿敏感性和吸附性。 这种特征使得由这些树脂制成的调色剂与其它皂制成的树脂相比具有更好的电荷稳定性，因为已知吸附的水分已经中和电荷。 本发明更具体地公开了一种制备聚合物的方法，其特别可用作调色剂树脂，其包括（1）将乙烯基芳族单体和选自共轭二烯单体和选自以下的丙烯酸酯单体的第二单体乳液共聚合： 在氨基酸皂存在下由丙烯酸烷基酯单体和甲基丙烯酸酯单体组成的组，以产生聚合物; 和（2）从水乳液中回收聚合物。
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公开(公告)号：US4868259A
公开(公告)日：1989-09-19
申请号：US104914
申请日：1987-10-06
申请人： Gary L. Burroway , Robert D. Mate
发明人： Gary L. Burroway , Robert D. Mate
IPC分类号： C08F2/22 , C08F257/02 , C08F267/04 , G03G9/087
CPC分类号： G03G9/08708 , C08F257/02 , C08F267/04 , G03G9/08702 , G03G9/08711 , G03G9/08788
摘要： The present invention relates to a process for preparing a polymeric resin which contains repeat units which are derived from maleic anhydride in an emulsion polymerization process which comprises polymerizing a vinyl aromatic monomer and an alkyl acrylate monomer in an aqueous medium in the presence of a styrene-maleic anhydride seed polymer which is neutralized with a tertiary amine. Such polymers, which contain repeat units which are derived from a vinyl aromatic monomer, an alkyl acrylate monomer, and maleic anhydride, are particularly useful as electrostatic image developing toner resins. For instance, resins, which are comprised of repeat units which are derived from styrene, butyl acrylate, and maleic anhydride, are particularly useful as toner resins.
摘要翻译： 本发明涉及一种制备聚合物树脂的方法，该聚合物树脂包含在乳液聚合方法中衍生自马来酸酐的重复单元，该方法包括在乙烯基芳族单体和丙烯酸烷基酯单体的存在下，在苯乙烯 - 用叔胺中和的马来酸酐种子聚合物。 含有衍生自乙烯基芳族单体，丙烯酸烷基酯单体和马来酸酐的重复单元的这种聚合物特别可用作静电显影调色剂树脂。 例如，由衍生自苯乙烯，丙烯酸丁酯和马来酸酐的重复单元构成的树脂特别可用作调色剂树脂。
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