SE7605923L - WAY TO POLYMERIZE VINYL CHLORIDE IN WATER SUSPENSION - Google Patents
WAY TO POLYMERIZE VINYL CHLORIDE IN WATER SUSPENSIONInfo
- Publication number
- SE7605923L SE7605923L SE7605923A SE7605923A SE7605923L SE 7605923 L SE7605923 L SE 7605923L SE 7605923 A SE7605923 A SE 7605923A SE 7605923 A SE7605923 A SE 7605923A SE 7605923 L SE7605923 L SE 7605923L
- Authority
- SE
- Sweden
- Prior art keywords
- vinyl chloride
- monomer
- way
- water suspension
- degassing
- Prior art date
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
- C08F6/00—Post-polymerisation treatments
- C08F6/24—Treatment of polymer suspensions
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)
- Polymerization Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1496848 Removal of monomer from polyvinyl chloride SOLVAY ET CIE 7 May 1976 [26 May 1975] 18785/76 Heading C3P A process for preparing vinyl chloride polymers with reduced residual monomer content comprises polymerizing the monomer in aqueous suspension in the presence of at least one dialkyl peroxydicarbonate and then removing the unreacted vinyl chloride monomer by degassing wherein the polymer suspension is treated with a monobasic hydroxide when the end of the polymerization has been reached but before the completion of degassing. The preferred hydroxides are those of ammonium, lithium, potassium and sodium which are added in such amount that the pH is from 7-12, preferably 9-10À5. The stripping may be effected using a fluid, e.g. steam.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7516579A FR2312514A1 (en) | 1975-05-26 | 1975-05-26 | PROCESS FOR THE POLYMERIZATION OF VINYL CHLORIDE IN AQUEOUS SUSPENSION |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7605923L true SE7605923L (en) | 1976-11-27 |
| SE426395B SE426395B (en) | 1983-01-17 |
Family
ID=9155753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7605923A SE426395B (en) | 1975-05-26 | 1976-05-25 | SETTING TO POLYMERIZE VINYL CHLORIDE IN WATER SUSPENSION AND THEN IMPROVE THE INITIAL THERMAL STABILITY OF THE RECOVERED POLYMER BY TREATING THE POLYMER WITH A HYDROXIDE |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS605607B2 (en) |
| AT (1) | AT354085B (en) |
| BE (1) | BE842139A (en) |
| BR (1) | BR7603310A (en) |
| CA (1) | CA1091396A (en) |
| CH (1) | CH612691A5 (en) |
| DE (1) | DE2619877A1 (en) |
| ES (1) | ES448211A1 (en) |
| FI (1) | FI61499C (en) |
| FR (1) | FR2312514A1 (en) |
| GB (1) | GB1496848A (en) |
| IT (1) | IT1060867B (en) |
| NL (1) | NL184365C (en) |
| NO (1) | NO148152C (en) |
| PT (1) | PT64986B (en) |
| SE (1) | SE426395B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3505238A1 (en) * | 1985-02-15 | 1986-08-21 | Hoechst Ag, 6230 Frankfurt | Process for the preparation of dry vinyl chloride suspension polymers |
| JPH0530643Y2 (en) * | 1985-12-19 | 1993-08-05 | ||
| JPS63179903U (en) * | 1987-05-15 | 1988-11-21 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA865802A (en) * | 1971-03-09 | Esso Research And Engineering Company | Vinyl chloride homo- and copolymers stability | |
| NL136294C (en) * | 1968-04-24 | |||
| US3720700A (en) * | 1969-11-14 | 1973-03-13 | Kema Nord Ab | Di-cetyl peroxy dicarbonate |
| IT989178B (en) * | 1972-07-19 | 1975-05-20 | Solvay | PROCEDURE TO ELIMINATE RESIDUAL VINYL CHLORIDE PRESENT IN POLI MERI |
-
1975
- 1975-05-26 FR FR7516579A patent/FR2312514A1/en active Granted
-
1976
- 1976-03-11 CH CH305276A patent/CH612691A5/en not_active IP Right Cessation
- 1976-04-08 PT PT64986A patent/PT64986B/en unknown
- 1976-05-05 DE DE19762619877 patent/DE2619877A1/en active Granted
- 1976-05-05 CA CA251,871A patent/CA1091396A/en not_active Expired
- 1976-05-07 GB GB18785/76A patent/GB1496848A/en not_active Expired
- 1976-05-11 FI FI761324A patent/FI61499C/en not_active IP Right Cessation
- 1976-05-20 JP JP51057345A patent/JPS605607B2/en not_active Expired
- 1976-05-24 BE BE1007407A patent/BE842139A/en not_active IP Right Cessation
- 1976-05-25 NO NO76761778A patent/NO148152C/en unknown
- 1976-05-25 AT AT382776A patent/AT354085B/en not_active IP Right Cessation
- 1976-05-25 SE SE7605923A patent/SE426395B/en not_active IP Right Cessation
- 1976-05-25 ES ES448211A patent/ES448211A1/en not_active Expired
- 1976-05-26 BR BR3310/76A patent/BR7603310A/en unknown
- 1976-05-26 IT IT23709/76A patent/IT1060867B/en active
- 1976-05-26 NL NLAANVRAGE7605686,A patent/NL184365C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NL7605686A (en) | 1976-11-30 |
| BE842139A (en) | 1976-11-24 |
| AT354085B (en) | 1979-12-27 |
| SE426395B (en) | 1983-01-17 |
| BR7603310A (en) | 1976-12-07 |
| NO761778L (en) | 1976-11-29 |
| ATA382776A (en) | 1979-05-15 |
| NO148152C (en) | 1983-08-17 |
| ES448211A1 (en) | 1977-07-01 |
| FI761324A (en) | 1976-11-27 |
| FR2312514B1 (en) | 1977-12-09 |
| NL184365B (en) | 1989-02-01 |
| GB1496848A (en) | 1978-01-05 |
| NO148152B (en) | 1983-05-09 |
| FR2312514A1 (en) | 1976-12-24 |
| PT64986A (en) | 1976-05-01 |
| FI61499C (en) | 1982-08-10 |
| FI61499B (en) | 1982-04-30 |
| DE2619877C2 (en) | 1988-05-26 |
| JPS51144478A (en) | 1976-12-11 |
| PT64986B (en) | 1977-09-07 |
| NL184365C (en) | 1989-07-03 |
| CA1091396A (en) | 1980-12-09 |
| JPS605607B2 (en) | 1985-02-13 |
| CH612691A5 (en) | 1979-08-15 |
| IT1060867B (en) | 1982-09-30 |
| DE2619877A1 (en) | 1976-12-16 |
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| Date | Code | Title | Description |
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| NAL | Patent in force |
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