Unlock instant, AI-driven research and patent intelligence for your innovation.

Monodentate compound containing phenoxy, preparation method and application thereof

A compound, phenoxy technology, applied in the field of catalytic synthesis of high molecular weight random polypropylene, can solve problems such as low catalytic activity

Active Publication Date: 2009-10-14
PETROCHINA CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alastair J.Nielson et al. reported in 1999 that they synthesized a non-monocene phenol oxygen type catalyst (structure shown in Figure b) to catalyze the synthesis of random polypropylene from propylene, and the catalytic activity of these compounds is low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Monodentate compound containing phenoxy, preparation method and application thereof
  • Monodentate compound containing phenoxy, preparation method and application thereof
  • Monodentate compound containing phenoxy, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1-Phenyl-2,3,4,5-tetramethylcyclopentadienyl-(2,4,6-tri-tert-butylphenoxy)-titanium dichloride catalyst

[0022] (1) Synthesis of 1-phenyl-2,3,4,5-tetramethylcyclopentenyl titanium trichloride

[0023]

[0024] In a 50ml dry ampoule, weigh 1.61g (8.13mmol) of 1-phenyl-2,3,4,5-tetramethyl-cyclopentadiene, add 20ml of anhydrous tetrahydrofuran, and slowly 7.5ml n-BuLi (9.00mmol) was slowly added dropwise. After one hour, the reaction system gradually rose to room temperature. After 8 hours of reaction, the solution turned into a white paste. 2.06ml of trimethylchlorosilane was slowly added to the reaction solution at -78°C, and then reacted at room temperature for 2 After 1 hour, the solution gradually turned bright yellow. The remaining trimethylchlorosilane and tetrahydrofuran solvents were distilled off under reduced pressure and extracted with hexane to obtain a yellow oil.

[0025] In a dry ampoule, under a nitrogen atmosphere, the above-mentioned trimethylsily...

Embodiment 2

[0033] The synthetic process of 1-phenyl-2,3,4,5-tetramethylcyclopentenyl titanium trichloride, reaction under ice-water bath condition, other operations are identical with embodiment 1, obtain catalyst product 0.78g, produce Rate 71.80%.

[0034] Catalyze ethylene polymerization according to the method in embodiment 1, obtain polymerization product 5.24g, catalyst activity is 2.21 * 10 6 gPE(molTi h) -1 , The weight-average molecular weight of polymer measured by GPC instrument is 270,000.

Embodiment 3

[0036] The synthesis process of 1-phenyl-2,3,4,5-tetramethylcyclopentenyl titanium trichloride, reacted at 40°C, and other operations were the same as in Example 1 to obtain 0.75g of product, the yield 69.15%.

[0037] Catalyze butene polymerization according to the method in embodiment 1, obtain polymerization product 3.84g, catalyst activity is 1.14 * 10 6 gPE(molTi h) -1 , The weight-average molecular weight of polymer measured by GPC instrument is 83000.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
molecular weightaaaaaaaaaa
Login to View More

Abstract

The present invention relates to the application of a phenoxy monocene compound; the compound is (1-phenyl-2,3,4,5-tetramethylcyclopentadienyl) (2,4,6-tri-tert-butyl Phenoxy)titanium dichloride, the catalyst used to catalyze the polymerization of propylene, is filled with propylene of one atmospheric pressure, and the toluene solution of 90mL trityl pentafluorotetraphenyl borate is added, and the transition metal mole of boron and main catalyst The ratio is 1.2, the reaction temperature is 70°C, and 10 mL of toluene solution containing 1 mg of catalyst and triisobutylaluminum is injected under the flow of propylene, the molar ratio of aluminum in triisobutylaluminum to the transition metal of the main catalyst is 200, Raise the pressure of propylene to 5 atmospheres, the reaction time is 30 minutes, and terminate the reaction with 5% HCl / methanol solution; the polymerization activity reaches above 1.0×106gPP(molTi h)-1, and the weight average molecular weight of the polymer is between 10,000 and 35 Between ten thousand.

Description

technical field [0001] The invention relates to the application of a monophenoxy-substituted cyclopentadienyl metallocene compound as an olefin polymerization catalyst, and is especially suitable for catalyzing and synthesizing high-molecular-weight random polypropylene. Background technique [0002] Atactic polypropylene (APP) was initially used as a by-product of isotactic polypropylene, and it was mostly used as fuel or used to make waterproof paper, paper interlayer or coating, etc. Now the use of APP has a new development. Blending APP with other polymer materials can make adhesives, sealants, sound insulation boards and communication cables. APP mixed with asphalt for paving can improve impact resistance and heat resistance. APP with high molecular weight can also be used as additives for rubber, plastics, lubricating oil and paraffin, low-voltage cable materials and strippable coatings. Chlorination modification of APP can be used to prepare polypropylene film print...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07F17/00C08F4/649
Inventor 郎笑梅母瀛吕春胜吴林美王刚付义李金才张铭辉高宇新赵增辉邹恩广赵成才姜进宪李欣王淑英
Owner PETROCHINA CO LTD