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
    • 8. 发明授权
    • Copolymers of vinyl chloride and lower olefins
    • 氯乙烯和低烯烃的共聚物
    • US3683051A
    • 1972-08-08
    • US3683051D
    • 1969-02-25
    • PECHINEY SAINT GOBAIN
    • CHATELAIN JEAN
    • C08F259/04C08F15/00
    • C08F259/04
    • Vinyl chloride is first polymerized in mass with high turbulent agitation to from 7 to 15 percent completion forming suspended polymer seeds in the liquid monomer, the suspension is added to a mixture of liquid vinyl chloride and low molecular weight olefin, and polymerization in mass is continued to completion, producing grains having a seed of the homopolymer of vinyl chloride surrounded by the copolymer. The first stage with high turbulence is carried out under warm conditions of usually about 50* to 60* C. and the second stage is carried out at from about -40* to +80* C. with mild agitation. The product is concentrated in a narrow range of particle sizes, e.g. 80 percent between 100 and 250 microns.
    • 首先在高湍流搅拌下将氯乙烯聚合成7〜15%完成形成液体单体中的悬浮聚合物种子,将悬浮液加入到液态氯乙烯和低分子量烯烃的混合物中,并且继续质量聚合 制造由共聚物包围的具有氯乙烯均聚物的种子的颗粒。 高湍流的第一阶段通常在约50-60℃的温度条件下进行,第二阶段在温度搅拌下在约-40℃至+ 80℃下进行。 该产品集中在窄范围的粒度,例如 100%至250微米之间的80%。