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
    • 25. 发明专利
    • ELECTROVISCOUS FLUID
    • JPH047397A
    • 1992-01-10
    • JP10742790
    • 1990-04-25
    • NIPPON CATALYTIC CHEM IND
    • OKADA IZUHOASAKO YOSHINOBUKOBAYASHI MINORU
    • B01J13/00C10M157/06C10N20/04C10N20/06C10N40/14
    • PURPOSE:To obtain an electroviscous fluid generating a large shear stress by applying a weak electric field and having a small current density applied and excellent electric current characteristics by incorporating a dispersing phase consisting of an org. polymer particle with cation exchange capacity, a dispersing medium consisting of a specified insulating liq. and a specified polymer additive. CONSTITUTION:An electroviscous fluid is obtd. by incorporating a dispersing phase consisting of an org. polymer particle with cation exchange capacity (e.g. a sulfonic acid group-contg. PS polymer), a dispersing medium consisting of an insulating liq. wherein a hydrocarbon compd. is a main ingredient and a polymer additive. The polymer additive is constituted of structural units (A) of formula I (wherein R is H or CH; X is a group of formula II, III or IV, or CN) and structural units (B) of formula V (wherein R is H or CH3; Y is an arom. hydrocarbon group) as essential constituting units and a polymer wherein the compsn. is in the range of 0.1-60wt.% structural units A and 40-99.9wt.% structural units B and the average mol.wt. is 1,000-10,000,000. This fluid has excellent electric current characteristics wherein it generates a large shear stress by applying a relatively weak electric field and a current density applied at that time is small and the generated shear stress and the current density are excellently stable for long time.