FR2185638A1 - Scale prevention in polyvinyl halide reactors - by adding oxyacids of P,N or S, or their salts - Google Patents

Scale prevention in polyvinyl halide reactors - by adding oxyacids of P,N or S, or their salts

Info

Publication number
FR2185638A1
FR2185638A1 FR7318867A FR7318867A FR2185638A1 FR 2185638 A1 FR2185638 A1 FR 2185638A1 FR 7318867 A FR7318867 A FR 7318867A FR 7318867 A FR7318867 A FR 7318867A FR 2185638 A1 FR2185638 A1 FR 2185638A1
Authority
FR
France
Prior art keywords
pref
reactors
salts
scale prevention
polyvinyl halide
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.)
Granted
Application number
FR7318867A
Other languages
French (fr)
Other versions
FR2185638B1 (en
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.)
Wacker Chemie AG
Original Assignee
Wacker Chemie AG
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
Priority claimed from DE2225236A external-priority patent/DE2225236C3/en
Priority claimed from DE19722248607 external-priority patent/DE2248607A1/en
Application filed by Wacker Chemie AG filed Critical Wacker Chemie AG
Publication of FR2185638A1 publication Critical patent/FR2185638A1/en
Application granted granted Critical
Publication of FR2185638B1 publication Critical patent/FR2185638B1/fr
Granted 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
    • C08F14/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
    • C08F14/02—Monomers containing chlorine
    • C08F14/04—Monomers containing two carbon atoms
    • C08F14/06—Vinyl chloride

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

The polymers are prepd. by aq. suspension polymsn. with oil sol. catalysts (0.001-1 wt.%, pref. 0.05-5 wt.% of alpha-acyl peroxides and/or dialkyl peroxydicarbonates), dispersants e.g., cellulose ether etc., in presence of 1-2,000 ppm. (2-2,000) pref. 10-300 ppm. of water-sol. reducing agents based on water. The reactor surface has a depth of irregularities of is not >10 mu m, pref. 1 mu m and flow speed at the surface of >=0.1 m/sec., pref. 17/sec. pH is 3-8, pref. 3.5-7.
FR7318867A 1972-05-24 1973-05-24 Scale prevention in polyvinyl halide reactors - by adding oxyacids of P,N or S, or their salts Granted FR2185638A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2225236A DE2225236C3 (en) 1972-05-24 1972-05-24 Process for the polymerization of vinyl chloride
DE19722248607 DE2248607A1 (en) 1972-10-04 1972-10-04 METHOD FOR PRODUCING POLYVINYL HALOGENIDES

Publications (2)

Publication Number Publication Date
FR2185638A1 true FR2185638A1 (en) 1974-01-04
FR2185638B1 FR2185638B1 (en) 1976-05-07

Family

ID=25763309

Family Applications (2)

Application Number Title Priority Date Filing Date
FR7318867A Granted FR2185638A1 (en) 1972-05-24 1973-05-24 Scale prevention in polyvinyl halide reactors - by adding oxyacids of P,N or S, or their salts
FR7413362A Expired FR2230660B1 (en) 1972-05-24 1974-04-17

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR7413362A Expired FR2230660B1 (en) 1972-05-24 1974-04-17

Country Status (5)

Country Link
CH (1) CH576491A5 (en)
DD (1) DD106851A5 (en)
ES (1) ES415009A1 (en)
FR (2) FR2185638A1 (en)
IT (1) IT985114B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2400041A1 (en) * 1977-08-09 1979-03-09 Sumitomo Chemical Co EQUIPMENT FOR POLYMERIZATION OF VINYL CHLORIDE MONOMERS, AND POLYMERIZATION PROCESS USING THEM

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5589315A (en) * 1978-12-27 1980-07-05 Kureha Chem Ind Co Ltd Production of graft polymer
ATE165845T1 (en) * 1992-02-13 1998-05-15 Europ Vinyls Corp Technology A POLYMERIZATION PROCESS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2062531A5 (en) * 1969-09-24 1971-06-25 Wacker Chemie Gmbh
FR2086635A5 (en) * 1970-04-03 1971-12-31 Pechiney Saint Gobain Vinyl chloride polymers - by aqs emulsion polymerisation in reaction medium contg an emulsifier, org peroxide and reducing age

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE324767B (en) * 1968-11-14 1970-06-15 Fosfatbolaget Ab

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2062531A5 (en) * 1969-09-24 1971-06-25 Wacker Chemie Gmbh
FR2086635A5 (en) * 1970-04-03 1971-12-31 Pechiney Saint Gobain Vinyl chloride polymers - by aqs emulsion polymerisation in reaction medium contg an emulsifier, org peroxide and reducing age

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2400041A1 (en) * 1977-08-09 1979-03-09 Sumitomo Chemical Co EQUIPMENT FOR POLYMERIZATION OF VINYL CHLORIDE MONOMERS, AND POLYMERIZATION PROCESS USING THEM

Also Published As

Publication number Publication date
FR2185638B1 (en) 1976-05-07
IT985114B (en) 1974-11-30
DD106851A5 (en) 1974-07-05
ES415009A1 (en) 1976-02-16
CH576491A5 (en) 1976-06-15
FR2230660A1 (en) 1974-12-20
FR2230660B1 (en) 1977-07-15

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Legal Events

Date Code Title Description
ST Notification of lapse