Production of alternating copolymers of conjugated dienes and conjugated polar vinyl monomers专利检索-路易斯碱酸，碱，盐，酸酐和碱专利检索查询-专利查询网

Production of alternating copolymers of conjugated dienes and conjugated polar vinyl monomers

阅读：50发布：2022-12-07

专利汇可以提供Production of alternating copolymers of conjugated dienes and conjugated polar vinyl monomers专利检索，专利查询，专利分析的服务。并且Novel alternating copolymers of conjugated dienes and conjugated polar vinyl monomers, wherein the conjugated diene unit is connected in a trans-1,4 form and the conjugated polar vinyl monomer unit and the conjugated diene unit are bonded alternately, are produced efficiently by copolyermizing these monomers in a non-aqueous medium at rather low temperature by using a catalyst system prepared by admixing a selected transition metal compound and an organoaluminum halide in the presence of the polar vinyl monomer or another selected Lewis base. The alternating copolymer here obtained has a regular structure, on this account, for example, the butadiene/acrylonitrile elastic alternating copolymer can be oriented and crystallized under a highly stretched condition.，下面是Production of alternating copolymers of conjugated dienes and conjugated polar vinyl monomers专利的具体信息内容。

权利要求

1. A METHOD OF PRODUCING ALTERNATING COPOLYMERS OF CONJUGATED DIENES AND CONJUGATED POLAR VINYL MONOMERS, WHEREIN THE CONJUGATED DIENE UNIT AND THE CONJUGATED POLAR VINYL MONOMER UNIT ARE BONDED ALTERNATELY, WHICH COMPRISES COPOLYMERIZING A CONJUGATED DIENE HAVING 4 TO 10 CARBON ATOMS AND A CONJUGATED POLAR VINYL MONOMER SELECTED FROM THE GROUP CONSISTING OF METHYL ACRYLATE, ETHYL ACRYLATE, PROPYL ACRYLATE, BUTYL ACRYLATE, METHYL METHACRYALTE, AND ETHYL METHACRYLATE, THE MOLAR RATIO OF SAID CONJUGATED DIENE TO SAID POLAR VINYL MONOMER BEING 1:10 TO 10:1, AT A TEMPERATURE OF -78*C TO 50*C, UNDER THE MONOMER GAS WITH OR WITHOUT AN INERT GAS, AT A PRESSURE FROM ONE DETERMINED BY VAPOR PRESSURE IN THE REACTION SYSTEM TO 50 ATM., IN A NON-AQUEOUS MEDIUM IN THE PRESENCE OF A CATALYST PREPARED FROM A COMPONENT (A): AT LEAST ONE TRANSITION METAL COMPOUND SOLUBLE IN THE MONOMER SOLUTION SELECTED FROM THE GROUP CONSISTING OF HALIDES, ALCOXIDES, ACETYLACETONATES, AND SALTS OF CARBOXYLIC ACIDS OF METALS AND OXY-METALS OF THE GROUP IV-B AND V-B IN THE PERIODIC TABLE AND A COMPONENT (B): AN ALUMINUM-CONTAINING COMPONENT SELECTED FROM THE GROUP CONSISTING ALUMINUM COMPOUNDS HAVING THE GENERAL FORMULAE

2. The method as claimed in claim 1, wherein butadiene and methyl acrylate are copolymerized.

3. The method as claimed in claim 1, wherein butadiene and methyl methacrylate are copolymerized.

4. The method as claimed in claim 1, wherein the component (A) is compounds of vanadium and titanium, soluble in the mixed monomer solution. 5.. The method as claimed in claim 1, wherein the component (A) is vanadium compound soluble in the mixed monomer solution.

6. The method as claimed in claim 1, wherein the component (A) is vanadyl trichloride.

7. The method as claimed in claim 1, wherein the component (A) is a compound selected from the group consisting of vanadyl tribromide, vanadyl diacetylacetonate, tri-tert-butoxy vanadyl, di-tert-butoxy vanadyl chloride, tert-butoxy vanadyl dichloride, and vanadyl naphthenate.

8. The method as claimed in claim 1, wherein the component (B) is the compounds having the following formulae, RAlCl2 and R3Al2Br3 wherein R is an alkyl radical having 1 to 4 carbon atoms.

9. The method as claimed in claim 1, wherein the component (B) is ethylaluminum dichloride.

10. The method as claimed in claim 1, wherein the component (B) is an aluminum-containing compound selected from the group consisting of ethylaluminum sesquichloride, methylaluminum sesquichloride, ethylaluminum sesquibromide, and isobutylaluminum sesquibromide.

11. The method as claimed in claim 1, wherein the component (B) is a combination selected from the group consisting of triethylaluminum/aluminum trichloride, diethylaluminum chloride/aluminum trichloride, ethylaluminum dichloride/aluminum trichloride, ethylaluminum sesquichloride/ethylaluminum dichloride, triethylaluminum/aluminum tribromide, and ethyl-aluminum dichloride/aluminum tribromide.

12. The method as claimed in claim 1, wherein said basic organic compound is dimethyl aniline.

13. The method as claimed in claim 1, wherein the copolymerization is effected in the absence of solvent.

14. The method as claimed in claim 1, wherein the copolymerization is effected in carbon disulfide as a solvent.

15. The method as claimed in claim 1, wherein the copolymerization is effected in tetrachloroethane as a solvent.

16. The method as claimed in claim 1, wherein the copolymerization is effected in ethylene as a solvent.

17. The method as claimed in claim 1, wherein the transition metal atom in the component (A) is 1:200 to 1:3 g-atom based on 1 g-atom of Al in the component (B).

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Production of alternating copolymers of conjugated dienes and conjugated polar vinyl monomers

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