FR2139338A5 - Controlling batchwise polysn in soln or emulsion - by measuring changes in specific gravity of reaction medium - Google Patents

Controlling batchwise polysn in soln or emulsion - by measuring changes in specific gravity of reaction medium

Info

Publication number
FR2139338A5
FR2139338A5 FR7216363A FR7216363A FR2139338A5 FR 2139338 A5 FR2139338 A5 FR 2139338A5 FR 7216363 A FR7216363 A FR 7216363A FR 7216363 A FR7216363 A FR 7216363A FR 2139338 A5 FR2139338 A5 FR 2139338A5
Authority
FR
France
Prior art keywords
reaction medium
polysn
batchwise
soln
emulsion
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
FR7216363A
Other languages
French (fr)
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Application granted granted Critical
Publication of FR2139338A5 publication Critical patent/FR2139338A5/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
    • C08F36/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F36/02—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
    • C08F36/04—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Polymsn. reaction is carried out in a reactor provided with an outer circulation circuit in which the change in the s.g. of the reaction medium resulting from the progress of the polymsn. is measured by a radiation probe, and the resulting signal is passed to a device automatically controlling the supply of a polymsn catalyst. This method is more rapid than the conventional use of a hydrometer.
FR7216363A 1971-05-12 1972-05-08 Controlling batchwise polysn in soln or emulsion - by measuring changes in specific gravity of reaction medium Expired FR2139338A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14245471A 1971-05-12 1971-05-12

Publications (1)

Publication Number Publication Date
FR2139338A5 true FR2139338A5 (en) 1973-01-05

Family

ID=22499905

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7216363A Expired FR2139338A5 (en) 1971-05-12 1972-05-08 Controlling batchwise polysn in soln or emulsion - by measuring changes in specific gravity of reaction medium

Country Status (6)

Country Link
JP (1) JPS5346873B1 (en)
BR (1) BR7202952D0 (en)
CA (1) CA994050A (en)
DE (1) DE2222929A1 (en)
FR (1) FR2139338A5 (en)
IT (1) IT955428B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2632718A1 (en) * 1988-06-08 1989-12-15 Chinoin Gyogyszer Es Vegyeszet DEVICE FOR IMPLEMENTING THERMAL METHODS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL234080A (en) 1958-03-15
US3254965A (en) * 1958-11-28 1966-06-07 Phillips Petroleum Co Polymerization control apparatus
US3492283A (en) 1964-12-29 1970-01-27 Phillips Petroleum Co Control of chemical reactions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2632718A1 (en) * 1988-06-08 1989-12-15 Chinoin Gyogyszer Es Vegyeszet DEVICE FOR IMPLEMENTING THERMAL METHODS

Also Published As

Publication number Publication date
DE2222929A1 (en) 1972-11-23
CA994050A (en) 1976-07-27
BR7202952D0 (en) 1973-08-23
IT955428B (en) 1973-09-29
JPS5346873B1 (en) 1978-12-16

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Legal Events

Date Code Title Description
ST Notification of lapse