FR2376162A1 - Vinyl! chloride polymers prepn. by emulsion polymerisation - in which thermal or mechanical degradation on treatment of emulsion, is reduced - Google Patents
Vinyl! chloride polymers prepn. by emulsion polymerisation - in which thermal or mechanical degradation on treatment of emulsion, is reducedInfo
- Publication number
- FR2376162A1 FR2376162A1 FR7739618A FR7739618A FR2376162A1 FR 2376162 A1 FR2376162 A1 FR 2376162A1 FR 7739618 A FR7739618 A FR 7739618A FR 7739618 A FR7739618 A FR 7739618A FR 2376162 A1 FR2376162 A1 FR 2376162A1
- Authority
- FR
- France
- Prior art keywords
- emulsion
- polymerisation
- pressure
- vinyl
- prepn
- 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.)
- Withdrawn
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)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Polymers of vinyl chloride contg. is not 80% by wt. units of vinyl chloride are obtd. by emulsion polymerisation under the autogenous pressure of the monomers at -20 to -80 degrees C, (pref. 25-70 degrees C) in presence of emulsifiers and/or protective colloids, free-radical catalysts and, if necessary, regulating agents. After addn. of the monomers, polymerisation is interrupted when the reduction in pressure from the spontaneous pressure of polymerisation has reacted 1-3 bars. Much less catalyst is used than in processes where polymerisation is continued until there is a large fall in pressure on addn. of supplementary catalyst.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762659535 DE2659535A1 (en) | 1976-12-30 | 1976-12-30 | PROCESS FOR THE PRODUCTION OF POLYVINYL CHLORIDE POLYMERISATES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2376162A1 true FR2376162A1 (en) | 1978-07-28 |
Family
ID=5997021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7739618A Withdrawn FR2376162A1 (en) | 1976-12-30 | 1977-12-29 | Vinyl! chloride polymers prepn. by emulsion polymerisation - in which thermal or mechanical degradation on treatment of emulsion, is reduced |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5384090A (en) |
| BE (1) | BE862411A (en) |
| DE (1) | DE2659535A1 (en) |
| FR (1) | FR2376162A1 (en) |
| IT (1) | IT1092242B (en) |
| NL (1) | NL7712698A (en) |
| NO (1) | NO774497L (en) |
| SE (1) | SE7714917L (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2179040A (en) * | 1935-09-28 | 1939-11-07 | Ig Farbenindustrie Ag | Process of polymerization in the gaseous state |
| US2689242A (en) * | 1951-03-20 | 1954-09-14 | Monsanto Chemicals | ph control in the emulsion polymerization of vinyl chloride |
-
1976
- 1976-12-30 DE DE19762659535 patent/DE2659535A1/en active Pending
-
1977
- 1977-11-17 NL NL7712698A patent/NL7712698A/en not_active Application Discontinuation
- 1977-12-19 IT IT52261/77A patent/IT1092242B/en active
- 1977-12-28 BE BE183915A patent/BE862411A/en unknown
- 1977-12-28 JP JP15864377A patent/JPS5384090A/en active Pending
- 1977-12-29 NO NO774497A patent/NO774497L/en unknown
- 1977-12-29 FR FR7739618A patent/FR2376162A1/en not_active Withdrawn
- 1977-12-29 SE SE7714917A patent/SE7714917L/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2179040A (en) * | 1935-09-28 | 1939-11-07 | Ig Farbenindustrie Ag | Process of polymerization in the gaseous state |
| US2689242A (en) * | 1951-03-20 | 1954-09-14 | Monsanto Chemicals | ph control in the emulsion polymerization of vinyl chloride |
Also Published As
| Publication number | Publication date |
|---|---|
| NO774497L (en) | 1978-07-03 |
| JPS5384090A (en) | 1978-07-25 |
| NL7712698A (en) | 1978-07-04 |
| IT1092242B (en) | 1985-07-06 |
| BE862411A (en) | 1978-06-28 |
| SE7714917L (en) | 1978-07-01 |
| DE2659535A1 (en) | 1978-07-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |