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
    • 18. 发明公开
    • 크롬-기재 촉매
    • 基于铬的催化剂
    • KR1020080112295A
    • 2008-12-24
    • KR1020087025005
    • 2007-04-13
    • 토탈 리서치 앤드 테크놀로지 펠루이
    • 보다필리쁘데브라기담스미에케
    • C08F4/22C08F4/646C08F10/02C08F4/16
    • C08F10/00C08F210/16Y02P20/52C08F4/24C08F4/76C08F4/025C08F210/14C08F2500/12C08F2500/19C08F2500/07C08F2500/04C08F2500/13
    • The present invention provides a process for preparing a supported chromium-based catalyst for the production of polyethylene comprising the steps of a) providing a silica-based support having a specific surface area of at least 250 m2/g and of less than 400 m2/g and comprising a chromium compound deposited thereon, the ratio of the specific surface area of the support to chromium content being at least 50000 m2/g Cr; b) dehydrating the product of step a); and c) titanating the product of step b) in an atmosphere of dry and inert gas containing at least one vaporised titanium compound of the general formula selected from RnTi(OR')m and (RO)nTi(OR')m, wherein R and R' are the same or different hydrocarbyl groups containing from 1 to 12 carbon atoms, and wherein n is 0 to 3, m is 1 to 4 and m+n equals 4, to form a titanated chromium-based catalyst having a ratio of specific surface area of the support to titanium content of the titanated catalyst ranging from 5000 to 20000 m2/g Ti. ® KIPO & WIPO 2009
    • 本发明提供一种制备用于生产聚乙烯的负载型铬基催化剂的方法,包括以下步骤:a)提供比表面积至少为250m 2 / g且小于400m 2 / g的二氧化硅基载体, g并且包含沉积在其上的铬化合物,载体的比表面积与铬含量的比率为至少50000m 2 / g Cr; b)使步骤a)的产物脱水; 和c)在含有至少一种选自RnTi(OR')m和(RO)n Ti(OR')m的通式的蒸发的钛化合物的干燥和惰性气体的气氛中对步骤b)的产物进行钛酸化,其中R 和R'是含有1至12个碳原子的相同或不同的烃基,并且其中n为0至3,m为1至4,m + n等于4,以形成钛酸根化合物的比例为 载体的比表面积为钛酸根催化剂的钛含量为5000〜20000m2 / g Ti。 ®KIPO&WIPO 2009