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    • 10. 发明授权
    • Stable polymeric dispersion and methods for making
    • 稳定的聚合物分散体和制备方法
    • US4524199A
    • 1985-06-18
    • US549933
    • 1983-11-09
    • Kar P. LokChristopher K. Ober
    • Kar P. LokChristopher K. Ober
    • C08F2/24C08F251/02C08F2/22
    • C08F251/02
    • Dry monodispersed polymeric particles, a stabilized dispersion of such and a method for making are described. The dispersion comprises a polar dispersion medium having dispersed therein monodispersed particles comprising a thermoplastic resin core substantially insoluble in the dispersion medium formed from a styrene or butylmethacrylate containing monomer or mixtures thereof and having irreversibly anchored thereto, a nonionic amphipathic steric stabilizer comprising a graft copolymer having a portion formed from a styrene or butylmethacrylate containing monomer or mixture thereof and a portion formed from hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxybutyl methyl cellulose, hydroxypropyl methyl cellulose, ethyl cellulose or cellulose propionate. The stable dispersion is made by dissolving the nonionic cellulose ether in the polar dispersion medium and in the presence of a free radical initiator adding styrene or butylmethacrylate containing monomer a mixture thereof thereto, and permitting polymerization to take place.
    • 描述干燥的单分散聚合物颗粒,稳定的分散体和制备方法。 分散体包括分散有单分散颗粒的极性分散介质,其包含基本上不溶于由苯乙烯或甲基丙烯酸丁酯单体或其混合物形成并且不可逆地锚定在其上的分散介质中的热塑性树脂芯,包含接枝共聚物的非离子两亲空间稳定剂, 由苯乙烯或甲基丙烯酸丁酯含有单体或其混合物形成的部分和由羟乙基纤维素,羟丙基纤维素,羟丁基甲基纤维素,羟丙基甲基纤维素,乙基纤维素或丙酸纤维素形成的部分。 通过将非离子纤维素醚溶解在极性分散介质中并在自由基引发剂的存在下,将苯乙烯或甲基丙烯酸丁酯的单体与其混合物加入,并使聚合发生,从而制得稳定的分散体。