Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2161360A
Inventor
Alelio Gaetano Francis D
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WR Grace and Co
Original Assignee
WR Grace and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WR Grace and CofiledCriticalWR Grace and Co
Priority to GB2161360ApriorityCriticalpatent/GB891575A/en
Publication of GB891575ApublicationCriticalpatent/GB891575A/en
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
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Chemical & Material Sciences
(AREA)
Health & Medical Sciences
(AREA)
Chemical Kinetics & Catalysis
(AREA)
Medicinal Chemistry
(AREA)
Polymers & Plastics
(AREA)
Organic Chemistry
(AREA)
Transition And Organic Metals Composition Catalysts For Addition Polymerization
(AREA)
Abstract
An ethylene polymerization catalyst is prepared by grinding under inert conditions a mixture of Ti and TiCl3, the mixture not being heated strongly before or during the grinding. The grinding may be effected in an inert liquid hydrocarbon (e.g. one which is also suitable for use in the polymerization reaction) or under an inert gas such as nitrogen or a noble gas. Specification 811,633 is referred to.
GB2161360A1960-06-201960-06-20Improvements in the production of polyethylene and catalyst therefor
ExpiredGB891575A
(en)
Procedure for purifying saturated hydrocarbons employed as auxiliary liquids for the polymerization of low pressure ethylene. (Machine-translation by Google Translate, not legally binding)
Procedure to regulate the molecular weight in the polymerization of alpha-olefins with mixed metalorganic catalysts (ziegler catalysts. (Machine-translation by Google Translate, not legally binding)
Process for stabilizing polymers of ethylenically unsaturated hydrocarbons novel substituted monophenols suitable for use therein and process for preparing these