TH33571A - Olefin polymerization process - Google Patents

Abstract

The invention DC60 involves a process for the production of indexed polymers olefins. Low Polydispur City In solution polymerization that acts With a charged catalyst Positive in the reactor Contains the boiling liquid hydrocarbon cycle And vapor gaps above the said cycle. Polymerization Non-mechanical substances that can eliminate the formation of bubbles during the Polymerization The substances used may be chosen from a) liquid hydrocarbon aerosols that enter the vapor gap. B) new liquid olefins fed at lower temperatures than the liquid cycle and c) foaming agents such as polyoxymethylchylene glycol or silicone (Fig. 6 The invention involves the production of indexed olefin polymers. Low Polydispur City In solution polymerization that acts With a charged catalyst Positive in the reactor Contains the boiling liquid hydrocarbon cycle And vapor gaps above the said cycle. Polymerization Non-mechanical substances that can eliminate the formation of bubbles during the Polymerization The substances used may be chosen from a) liquid hydrocarbon aerosols that enter the vapor gap. Of to the reactor; b) new liquid olefins fed at temperatures below the liquid cycle and c) foaming agents such as polyoxymethylkylene, glycol or silicone (Fig. 6)

Claims (1)

1.Process for the production of olefin polymers with low polyphenol index with catalyst Low residue and / or low chlorine content By polymerization of olefins processed in a solution with cationic catalysts. In a reactor with a combined liquid cycle With boiling liquid hydrocarbons as intermediates for polymerization reactions. And there is a vapor gap Above the liquid cycle It is characterized by that polymerization is performed with a substance that It is not a mechanical one that eliminates the formation of bubbles during such polymerization. 2. The process of reducing the polymerase index of olefins containing catalysts. Low residue and / or low chlorine content in polymerization in olefin solutions with cationic catalysts in reactors with a liquid-containing cycle. Boiling liquid hydrocarbons are intermediates for polymerization reactions. And there is a vapor gap above the cycle Such liquid It is characteristic that polymerization is performed with non-mechanical substances that It is able to eliminate the formation of bubbles during such polymerization. 3. Process according to claim 1 or 2, which is characterized by that Bubble formation is liquid hydrocarbon aerosols that are introduced into the vapor space above the fluid cycle in the reactor. 4. Process according to claim 3, which is characterized by hydrocarbon aerosols. The liquid is introduced into the vapor gap at a height of at least 1 m above the surface of the divided liquid cycle. Separate the vapor gaps from the aforementioned liquid phase 5. Process according to claim 3 or 4, which is characterized by that aerosol Liquid hydrocarbons are introduced into the vapor gap at a lower temperature of the liquid phase in the reactor. 6. Process in accordance with claim 3 to 5. Which has the characteristics that the aerosol Liquid hydrocarbons comprise one or all of the new liquid olefins fed into the reactor. 7. Process in accordance with claim 3 to 6. Which has the characteristics that the aerosol Liquid hydrocarbons are made up of all or a portion of the liquid obtained after cooling and the condensation of the gas that escapes from the reactor vapor gap. 8.Which of these claims 3 to 7 processes? One Which has the characteristics that the aerosol Liquid hydrocarbons comprise the proportion of liquid cycles released from the reactor. 9. Process in accordance with Claims 3 to 8. Which has the characteristics that The polymerization of olefins was performed continuously. And liquid hydrocarbon aerosols were Continuously injected into the vapor gap of the reactor 1 0. Process in accordance with claim 1 or 2, which is characterized by the ability to eliminate Bubble formation is a new liquid olefin that is fed into the reactor at a lower temperature of the liquid cycle 1 1. The process of claim 10 is characterized by that the temperature of the ole The new liquid fin entered is from 2 to 30 ํ lower than that of the reactor liquid phase 1 2. Process according to claim 10 or 11, which is characterized by that liquid olefins. The new feed is introduced into the liquid cycle of the reactor 1 3. Process according to claim 10 or 11, which is characterized by that liquid olefin The new feed is introduced into the vapor gap of the reactor 1 4. Process in accordance with Claim 10 through 13. Which has the characteristics that The polymerization of olefins was performed continuously. And the new liquid olefin was introduced Continuously entering the reactor 1 5. Process according to claim 1 or 2, which is characterized by that The formation of a foaming agent is a foaming agent 1 6. Process according to claim 15, which has the characteristics that the foaming agent is optional. Of the group consisting of polyoxymethylkylene glycol and silicones 1 7. Process according to claim 16, which is characterized by that silicones have a kinetic viscosity of 25 °. H. In the range of 5 to 1,000,000 centistoke 1 8. Process according to claim 16, which is characterized by that polyoxymethylkylene Glycol is a polyoxymethylkylene glycol block composed of a block unit based on Ethylene oxide And block units based on propylene oxide 1. 9. Process in accordance with Claim 16 through 18. Which has the characteristics that the substance The foaming agent is present in the reactor fluid cycle at concentrations of 0.01 to 100 parts by wt. Million Parts Against Liquid Cycle 2 0. Process by Claim 16 through 19. Which has a unique feature that The polymerization of olefins is performed continuously. And the foaming agent is introduced into the tank. Continuous reactor 2 1. Process according to Claim 1 to 20, any one Which has the characteristics that the substance Olefins used in polymerization are at least one olefin C4 that should be used is isobutene.