GB682695A - Low temperature polymerization - Google Patents

Low temperature polymerization

Info

Publication number
GB682695A
GB682695A GB180250A GB180250A GB682695A GB 682695 A GB682695 A GB 682695A GB 180250 A GB180250 A GB 180250A GB 180250 A GB180250 A GB 180250A GB 682695 A GB682695 A GB 682695A
Authority
GB
United Kingdom
Prior art keywords
pipe
polymer
drum
feed
polymer solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB180250A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Standard Oil Development Co
Original Assignee
Standard Oil Development Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Oil Development Co filed Critical Standard Oil Development Co
Publication of GB682695A publication Critical patent/GB682695A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/04—Monomers containing three or four carbon atoms
    • C08F210/08—Butenes
    • C08F210/10—Isobutene
    • C08F210/12—Isobutene with conjugated diolefins, e.g. butyl rubber

Abstract

In the low-temperature polymerization of mono-olefins, e.g isobutylene and iso-octene, alone or with multi-olefins, e.g. butadiene, isoprene, dimethyl butadiene, myrcene, dimethallyl, 2-methyl-3-nonyl- and 2-methyl-4-pentyl-butadienes and cyclopentadiene, dissolved in a non-reactive solvent which also dissolves the polymer, e.g. propane, butanes, pentanes, hexanes, light naphtha and carbon disulphide, the feed is led to a circulating polymerization system to which a Friedel-Crafts catalyst is added and wherein conversion is controlled so that the polymer solution is still flowable, and a polymer containing stream taken from the system is passed in counter-current <PICT:0682695/IV (a)/1> heat exchange to the feed to cool the latter and warm the polymer solution to reduce both its viscosity and precipitation of polymer. Monomer-solvent feed from pipe 1 passes through heat-exchangers 2, 3, 4, 5, 6 and calcium chloride drier 7 to a polymerization system 9 comprising coolers 11, 12 alternately connected by pipes 14, 15 through a circulating pipe 16 and catalyst injecting nozzle 17 to polymerizing drum 19 and pump 21. A pump 25 withdraws dilute polymer solution to storage drum 26, whence it passes through the heat-exchangers in reverse flow to the feed, and by pipe 27 through a preheater 28 to drums 29, 38 and associated boilers 36, 41 where most of the solvent and unreacted monomer is vaporized and recovered in still 33. Concentrated polymer solution (15 to 25 per cent of polymer) from drum 38 is delivered by pipe 43, together with steam from pipe 47 and water from pipe 40, to a flash drum 44 provided with a stirrer, where all the volatiles are removed, leaving a slurry of polymer in water which is further purified in drum 73 and withdrawn by pipe 75 to the usual drying and purifying plant. Vapour discharged from the top of drum 44 is condensed at 48, water separating through pipe 51 and liquid hydrocarbons through pipe 52 to fractionating towers from which monomers and solvent are recycled. A slightly modified apparatus for use with higher boiling solvents is also described.ALSO:<PICT:0682695/III/1> Volatile material is removed from a polymer solution (see Group IV(a)) by passing the solution through pipe 43 to flash tank 44 together with a steam jet from line 47 and a water jet from pipe 40 whereby the solution is broken up into droplets.
GB180250A 1949-11-04 1950-01-24 Low temperature polymerization Expired GB682695A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1019751XA 1949-11-04 1949-11-04

Publications (1)

Publication Number Publication Date
GB682695A true GB682695A (en) 1952-11-12

Family

ID=22287460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB180250A Expired GB682695A (en) 1949-11-04 1950-01-24 Low temperature polymerization

Country Status (3)

Country Link
DE (1) DE852304C (en)
FR (1) FR1019751A (en)
GB (1) GB682695A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927912A (en) * 1954-06-28 1960-03-08 Exxon Research Engineering Co Preparation of butyl rubber in solution
US3033836A (en) * 1958-12-31 1962-05-08 Exxon Research Engineering Co Process for the production of olefinic elastomers

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2772255A (en) * 1952-12-22 1956-11-27 Exxon Research Engineering Co Polymerization process
DE4426756A1 (en) * 1994-07-28 1996-02-01 Bayer Ag Process for the production of C¶4¶-C¶1¶¶6¶ alkyl rubbers by the slurry process
FR2749015B1 (en) * 1996-05-24 1998-07-03 Bp Chemicals Snc OLEFIN (S) POLYMERIZATION PROCESS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927912A (en) * 1954-06-28 1960-03-08 Exxon Research Engineering Co Preparation of butyl rubber in solution
US3033836A (en) * 1958-12-31 1962-05-08 Exxon Research Engineering Co Process for the production of olefinic elastomers

Also Published As

Publication number Publication date
FR1019751A (en) 1953-01-26
DE852304C (en) 1952-10-13

Similar Documents

Publication Publication Date Title
USRE22210E (en) Polymerization of olefines
RU98113720A (en) POLYMERIZATION IN SUSPENSION WITH HIGH CONTENT OF SOLID PARTICLES
CA2705155C (en) Process for polymerising or oligomerising a hydrocarbon
BR112018012879B1 (en) Process for producing a polymeric composition
WO2009060342A2 (en) Process for polymerising or oligomerising a hydrocarbon
BRPI1011797B1 (en) “Process for producing steam using heat recovered from a polymerization reaction”
BR112017005851B1 (en) production method and a-olefin oligomer production apparatus
GB682695A (en) Low temperature polymerization
US2340490A (en) Dehydration of maleic acid
US3436436A (en) Method for separation of conjugated diolefin by back wash in extractive distillation
US3392089A (en) Multi-effect desalination process with preheating by direct contact oil scale removing
US2844569A (en) Solution process for making isobutylene-diolefin synthetic rubber
US2940960A (en) Process for recovering polymers
BRPI0610570A2 (en) process for solvent extraction of butadiene from a mixture of boiling c4 compounds next to butadiene and for recovering butadiene as a process product
US2906793A (en) Polymerization of isoolefins
US3523929A (en) Olefin polymerization process
GB668466A (en) Propylene polymerization process and product
US2673833A (en) Distillation of coal tar
US2557910A (en) Chemical reactor and recovery unit
JPH02243642A (en) Preparation of methyl-t-butyl ether
US2461004A (en) Treatment of hydrocarbon resins and products thereof
DE1108438B (en) Process for the production of butyl rubber
US3033836A (en) Process for the production of olefinic elastomers
US2827504A (en) Process for the purification of benzene
US2373714A (en) Polymerization of indene