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Polypentadiene with cis-1,4 structure, and preparation method and application thereof

A technology of polypiperylene and cis, which is applied in the field of cis-1,4 polypiperylene and its preparation, can solve the problems of low molecular weight and inability to obtain high molecular weight through polymerization, and achieve simple formula, The effect of optimizing molecular weight and cis structure and good tensile strength

Inactive Publication Date: 2019-09-20
NINGBO JINHAI CHENGUANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention can only obtain viscous piperylene petroleum resin with low molecular weight through non-directional polymerization, and cannot obtain polypiperylene products with high molecular weight and high cis-1,4-structure content through polymerization

Method used

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  • Polypentadiene with cis-1,4 structure, and preparation method and application thereof
  • Polypentadiene with cis-1,4 structure, and preparation method and application thereof
  • Polypentadiene with cis-1,4 structure, and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add the following substances measured into the 100ml reactor that has been replaced with nitrogen and filled:

[0033] The first organic solvent (select anhydrous toluene in the present embodiment, certainly also 50ml can select other aromatic solvents such as benzene, xylene, trimethylbenzene and its isomers for use);

[0034] Complex catalyst; 1.2ml

[0035] Piperylene monomer with a purity of 95% (trans-piperylene monomer contains 97% to 98% in 15ml);

[0036] Wherein, the composition of complex catalyst is as follows:

[0037]Alkyl metal compound (choose ethylaluminum dichloride in this embodiment, when 0.9ml can also choose triethylaluminum, tripropylaluminum, tributylaluminum, triisobutylaluminum, diethylaluminum hydride, Dibutyl aluminum hydride, diisobutyl aluminum hydride, monochlorodiisobutyl aluminum, dichloroisobutyl aluminum, monochloroisobutyl aluminum hydride, etc.);

[0038] Electron donor (choose thiophene in this embodiment, of course other Lewis ba...

Embodiment 2

[0045] Add the following substances measured into the 100ml reactor that has been replaced with nitrogen and filled:

[0046] The first organic solvent (select anhydrous toluene); 70ml

[0047] Complex catalyst; 1.55ml

[0048] Piperylene monomer with a purity of 95% (trans-piperylene monomer contains 97% to 98% in 15ml);

[0049] Wherein, the composition of complex catalyst is as follows:

[0050] Alkyl metal compound (choose ethyl aluminum dichloride); 1.05ml

[0051] Electron donor (select anhydrous pyridine); 0.50ml

[0052] Transition metal compound (select cobalt diacetylacetonate); 0.0028g

[0053] The preparation method of the complex catalyst is as follows: in an inert gas protection atmosphere, first add the electron donor to the transition metal compound diluted with the second organic solvent (n-hexane) at 16°C, stir and mix evenly , to obtain a mixture; then at -12°C, add the above mixture to an alkyl metal compound diluted with a second organic solvent for c...

Embodiment 3

[0058] Add the following substances measured into the 100ml reactor that has been replaced with nitrogen and filled:

[0059] The first organic solvent (select anhydrous toluene); 60ml

[0060] Complex catalyst; 1.33ml

[0061] Piperylene monomer with a purity of 95% (trans-piperylene monomer contains 97% to 98% in 16ml);

[0062] Wherein, the composition of complex catalyst is as follows:

[0063] Alkyl metal compound (choose ethyl aluminum dichloride); 1.00ml

[0064] Electron donor (choose thiophene); 0.33ml

[0065] Transition metal compound (select cobalt stearate); 0.026g

[0066] The preparation method of the complex catalyst is as follows: in an inert gas protection atmosphere, first add the electron donor to the transition metal compound diluted with the second organic solvent (n-hexane) at 15°C, stir and mix evenly , to obtain a mixture; then at -10°C, add the above mixture to an alkyl metal compound diluted with a second organic solvent for complexation, and th...

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Abstract

The invention provides polypentadiene with a cis-1,4 structure. The polypentadiene is characterized in that the content of the cis-1,4 structure in the polypentadiene is not less than 70%; the number-average molecular weight Mn of the polypentadiene is in a range from 100,000 to 1,000,000; and the molecular weight distribution Pd of the polypentadiene is in a range from 1.4 to 4.0. The invention also discloses a preparation method and application of the above-mentioned polypentadiene. Compared with the prior art, the preparation method of the invention is simple in formula and easy to implement; and the prepared polypentadiene has high molecular weight, regular molecular configuration and high cis content.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and in particular relates to polypiperylene with a cis-1,4 structure and a preparation method and application thereof. Background technique [0002] The carbon five (C5) fraction mainly comes from the by-product of the high-temperature cracking of petroleum to ethylene and the catalytic cracking unit of petroleum refineries. The olefins in the C5 fraction from the catalytic cracking unit of the refinery are mainly monoolefins, and the component with high value in chemical industry utilization is isopentene. The by-product C5 fraction of the cracking ethylene process can generally be roughly divided into two categories: one is active components, mainly including isoprene (ISP), cyclopentadiene (CPD) (usually in the form of dimer ring pentadiene (DCPD)), piperylene (PIP) and isopentene, 1-pentene; the other is an inactive component, mainly n-pentane, isopentane and cyclopentane. Among t...

Claims

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Application Information

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IPC IPC(8): C08F136/04C08F2/06C08F4/70C08L9/00C08K13/02C08K3/06C08K3/22
CPCC08F136/045C08K3/06C08K3/22C08K13/02C08K2003/2296C08F2/06C08F4/7096C08F4/7098C08L9/00
Inventor 耿伟吴瑞东
Owner NINGBO JINHAI CHENGUANG CHEM
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