会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明授权
    • 라텍스 안정성 및 내열성이 우수한아크릴로니트릴-부타디엔-스티렌 공중합체의 제조방법
    • 制备具有良好的稳定性和耐热性的丙烯腈 - 丁二烯 - 苯乙烯共聚物的方法
    • KR100785609B1
    • 2007-12-14
    • KR1020060077554
    • 2006-08-17
    • 주식회사 엘지화학
    • 김현도오현택서혜원이형섭
    • C08F279/04C08F2/22C08L55/02
    • C08F279/04C08F2/22C08L55/02
    • A method for preparing an acrylonitrile-butadiene-styrene(ABS) copolymer is provided to obtain an ABS graft copolymer having a high total solid content and rubber content, excellent polymerization stability and improved heat resistance via an emulsion polymerization process. A method for preparing an ABS graft copolymer using emulsion polymerization is characterized by using colloidal silica as a polymerization additive. Particularly, the method comprises the steps of: (a) introducing rubber latex and a portion of a monomer mixture containing an aromatic vinyl compound and a vinyl cyanide compound, an emulsifier, deionized water, molecular weight modifier and colloidal silica into a polymerization reactor, and introducing an oil-soluble redox initiator and activator thereto to initiate polymerization; (b) introducing a monomer emulsion containing another portion of the monomer mixture, an emulsifier and deionized water, oil-soluble redox initiator and activator continuously to the reactor, 30 minutes-1 hour after the initiation of reaction of step (a), to perform a reaction; and (c) further introducing an oil soluble redox initiator and activator thereto to perform a reaction.
    • 提供一种制备丙烯腈 - 丁二烯 - 苯乙烯(ABS)共聚物的方法,以通过乳液聚合方法获得具有高总固体含量和橡胶含量,优异的聚合稳定性和改善的耐热性的ABS接枝共聚物。 使用乳液聚合制备ABS接枝共聚物的方法的特征在于使用胶体二氧化硅作为聚合添加剂。 特别地,该方法包括以下步骤:(a)将橡胶胶乳和一部分含有芳族乙烯基化合物和乙烯基氰化合物,乳化剂,去离子水,分子量调节剂和胶体二氧化硅的单体混合物引入聚合反应器中, 并引入油溶性氧化还原引发剂和活化剂以引发聚合; (b)在步骤(a)的反应开始后30分钟-1小时将含有另一部分单体混合物的单体乳液,乳化剂和去离子水,油溶性氧化还原引发剂和活化剂连续引入反应器, 进行反应 和(c)进一步引入油溶性氧化还原引发剂和活化剂以进行反应。