GB617891A - A process for the manufacture of co-polymerisation products of homogeneous composition - Google Patents
A process for the manufacture of co-polymerisation products of homogeneous compositionInfo
- Publication number
- GB617891A GB617891A GB35284/45A GB3528445A GB617891A GB 617891 A GB617891 A GB 617891A GB 35284/45 A GB35284/45 A GB 35284/45A GB 3528445 A GB3528445 A GB 3528445A GB 617891 A GB617891 A GB 617891A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polymerization
- kept constant
- per cent
- critical area
- manufacture
- 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
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
- C08F2/00—Processes of polymerisation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Homogeneous copolymers of two or more substances with different rates of polymerization are produced by adding during the polymerization all the monomeric constituents so that their proportion during polymerization is kept constant, and if monomer concentrations lying within the "critical area" are employed, the absolute monomer concentrations are also kept constant. The "critical area" of concentration is that in which the absolute concentration has a great effect on the properties of the polymer and ranges from zero to between 5 and 7 per cent by weight in emulsion polymerization and to approximately 15 per cent in solvent polymerization. The addition of fresh monomers may be continuous or intermittent. The process is applicable to the copolymerization of vinyl chloride and vinylidene chloride and the examples describe its application also to emulsion polymerization of (1) vinyl chloride and methyl methacrylate and (2) vinylidene chloride and methyl acrylate. Specification 593,292 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL264611X | 1945-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB617891A true GB617891A (en) | 1949-02-14 |
Family
ID=19781654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35284/45A Expired GB617891A (en) | 1945-08-28 | 1945-12-31 | A process for the manufacture of co-polymerisation products of homogeneous composition |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE467724A (en) |
| CH (1) | CH264611A (en) |
| FR (1) | FR944063A (en) |
| GB (1) | GB617891A (en) |
| NL (1) | NL64171C (en) |
-
0
- NL NL64171D patent/NL64171C/xx active
- BE BE467724D patent/BE467724A/xx unknown
-
1945
- 1945-12-31 GB GB35284/45A patent/GB617891A/en not_active Expired
-
1946
- 1946-08-27 FR FR944063D patent/FR944063A/en not_active Expired
- 1946-08-28 CH CH264611D patent/CH264611A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR944063A (en) | 1949-03-25 |
| BE467724A (en) | |
| CH264611A (en) | 1949-10-31 |
| NL64171C (en) |
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