首页
产品
黄页
商标
征信
会员服务
注册
登录
全部
|
企业名
|
法人/股东/高管
|
品牌/产品
|
地址
|
经营范围
发明名称
Process for preparing tetraphenolic compounds
摘要
Tetraphenolic compounds such as the tetraphenol of ethane and the tetraphenol of xylene can be prepared in a ketone/alcohol solvent medium using a cation exchange resin catalyst.
申请公布号
US5191128(A)
申请公布日期
1993.03.02
申请号
US19920851376
申请日期
1992.03.12
申请人
SHELL OIL COMPANY
发明人
LI, SIMON M.
分类号
C07C37/20;C07C39/15
主分类号
C07C37/20
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Photovoltaic Cell
ENERGY TRANSFER MACHINE AND METHOD
INTEGRATED SHIPPING FIXTURE AND ASSEMBLY METHOD FOR JOINTED WIND TURBINE BLADES
VIDEO SIGNAL PROCESSOR AND VIDEO SIGNAL PROCESSING METHOD
LEADFRAME FOR SEMICONDUCTOR PACKAGE
INTER-CONNECTING STRUCTURE FOR SEMICONDUCTOR DEVICE PACKAGE AND METHOD OF THE SAME
Encryption device and medium, decryption device and method, data delivery device, data receiving device, and data delivery system
MOBILE ANTI-PHISHING
LOW PROFILE STENT WITH FLEXIBLE LINK
CONNECTOR
FLEXIBLE LIGHT SHIELD AND DIFFUSER
ELECTRONIC APPARATUS AND SYSTEM
PULSE SIGNAL DELAY CIRCUIT AND LED DRIVE CIRCUIT
Method and System for Transmitting Borehole Image Data
KEEPING CAGE FOR LABORATORY ANIMALS
COMPONENTS AND METHODS FOR USE IN ELECTRO-OPTIC DISPLAYS
Multi-Flavor Valve
Liquid application apparatus, liquid application method, inkjet recording apparatus and inkjet recording method
Plated Resin Molded Article
Semiconductor device having resistance based memory array, method of operation, and systems associated therewith