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Tubular polymerization reactors and polymers made therein

A tubular reactor and reactor technology, applied in the field of polymerization devices

Active Publication Date: 2010-06-16
EXXONMOBIL CHEM PAT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The transfer agent is then added equally along the length of the tube, although it may not be consumed equally, so can result in a concentration change distributed along the tube

Method used

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  • Tubular polymerization reactors and polymers made therein
  • Tubular polymerization reactors and polymers made therein
  • Tubular polymerization reactors and polymers made therein

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Embodiment Construction

[0033] In one embodiment, see image 3 , the present invention provides a tubular polymerization reactor device 200, comprising:

[0034] Fresh monomer source 6 (non-recycled, generally free of chain transfer agents);

[0035] Medium-pressure and high-pressure compressors 4 and 5, respectively, for compressing the monomer;

[0036] reaction tube 2;

[0037] A plurality of monomer feed points 3 arranged at intervals along the longitudinal direction of the reaction tube for supplying monomer to the reaction tube 2;

[0038] a plurality of free radical or catalyst injection sites 7 spaced longitudinally along the reaction tube 2 for converting monomers to polymers inside the tube in the reaction zone;

[0039] Separators 18 and 20 for receiving the monomer-polymer mixture from reactor tube 2 and separating the mixture into a volatile monomer-rich phase and a molten polymer-rich phase;

[0040] Conduits 8 and 26 for recycling the monomer-rich phase for compression and recyclin...

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Abstract

Tubular reactor apparatus and processes are provided for improved polymerization including using chain transfer agents and multiple monomer feeds spaced lengthwise along the tubular reactor providinghigh conversions of monomer into polymer. The invention also relates to polymers made from such a tubular reactor apparatus and processes including those polymers having a low haze value, a density over 0.92 g / cm<3> and / or having terminal carbonyl groups. The apparatus and methods uncouple or reduce the dependency between the monomer concentration and transfer agent concentration. The uncoupling in other embodiments may also be varied leading to multiple desirable effects.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of and is a continuation-in-part of formal US Patent Application Serial No. 10 / 712,750, filed November 12, 2003, which is a continuation-in-part of US Application Serial No. 10 / 712,750, filed June 4, 2003. 454,545 (now US Patent 6,673,878), and US Application No. 10 / 454,545 is a continuation-in-part of US Application No. 10 / 028,552 (now US Patent 6,596,241), filed December 19, 2001, all of which are incorporated This application is for informational purposes. technical field [0003] The present invention relates to apparatus and methods for improving polymerization in tubular polymerization reactors, including those using chain transfer agents and multiple monomer feeds spaced along the length of the tubular reactor , to provide high conversion of monomer to polymer. The invention also relates to polymers prepared by such methods and devices, including polymers having low haze value...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F2/38B01J19/24C08F210/02C08F2/00C08F10/00C08F10/02C08F110/02
CPCC08F110/02B01J2219/00108B01J2219/00006B01J2219/00094C08F10/00C08F10/02B01J19/2415C08F2/00C08F2/01C08F2/38B01J2219/0006C08F2500/12C08F2500/04B01J19/24C08F110/00
Inventor J·C·唐克H·A·拉门斯
Owner EXXONMOBIL CHEM PAT INC