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
    • 4. 发明授权
    • Stress-crack resistant ethylene-perhaloethylene terpolymers
    • 耐应力开裂乙烯 - 全卤代乙烯三元共聚物
    • US4033939A
    • 1977-07-05
    • US649936
    • 1976-01-19
    • Stephen R. Schulze
    • Stephen R. Schulze
    • C08F210/00C08F2/00C08F10/00C08F14/00C08F14/18C08F210/02C08F214/04C08F214/26C08L23/08
    • C08F210/02Y10T428/31699
    • Stress-crack resistant terpolymers of from about 40 to 60 mol percent ethylene, about 60 to 40 mol percent of a halogenated comonomer selected from the group consisting of tetrafluoroetylene, chlorotrifluoroethylene and mixtures thereof and about 0.1 to 10 mol percent of a termonomer selected from the group consisting of 3,3,3-trifluoro-2-trifluoromethyl propene, a vinyl monomer which is free of telogenic activity and which provides a side chain having at least two carbon atoms, the side chain being aromatic or having its elements bonded by a single bond only, and mixtures thereof, and containing high and low molecular weight components such that: ##EQU1## WHEREIN X.sub.i represents the weight fraction of each high molecular weight component i;Mw represents the weight-average molecular weight of the terpolymer,Mw.sub.i represents the weight-average molecular weight of each component i, ##EQU2## WHEREIN X.sub.j represents the weight fraction of each low molecular weight component j;Mw.sub.j represents the weight-average molecular weight of each component j, and0.1 .ltoreq.f .ltoreq.0.95.
    • 约40至60mol%乙烯的抗应力裂纹三元共聚物,约60至40mol%的选自四氟乙烯,三氟氯乙烯及其混合物的卤代共聚单体和约0.1-10mol%的选自以下的三元共聚物: 由3,3,3-三氟-2-三氟甲基丙烯组成的基团,没有成熟活性的乙烯基单体,其提供具有至少两个碳原子的侧链,该侧链是芳族的或其元素通过 单键和其混合物,并含有高分子量和低分子量组分,使得: