GB1385326A - Co-polymerisation process - Google Patents
Co-polymerisation processInfo
- Publication number
- GB1385326A GB1385326A GB4368971A GB4368971A GB1385326A GB 1385326 A GB1385326 A GB 1385326A GB 4368971 A GB4368971 A GB 4368971A GB 4368971 A GB4368971 A GB 4368971A GB 1385326 A GB1385326 A GB 1385326A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stage
- monomer
- vinyl
- vinyl halide
- sept
- 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
- C08F259/00—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
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)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
1385326 Vinyl halide copolymers BP CHEMICALS INTERNATIONAL Ltd 29 Sept 1972 [20 Sept 1971] 43689/71 Heading C3P Vinyl halide copolymers are obtained by polymerizing in a first stage a monomeric material containing at least 50% wt. of vinyl halide in the presence of a free radical initiator until at least 40% of the monomer is polymerized and in a second stage adding a comonomer, which forms a copolymer having a lower softening point than the polymer obtained in its absence, in an amount less than the weight of the remaining monomer from the first stage and completing polymerization in the presence of additional free radical initiator. The first stage monomer is preferably vinyl chloride and the second stage comonomer is methyl methacrylate (exemplified), ethyl, butyl or 2-ethylhexyl acrylate, vinyl acetate or stearate, vinylidene chloride, ethylene or propylene. Suspension polymerization is preferred. The temperature may be raised in the second stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4368971A GB1385326A (en) | 1971-09-20 | 1971-09-20 | Co-polymerisation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4368971A GB1385326A (en) | 1971-09-20 | 1971-09-20 | Co-polymerisation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1385326A true GB1385326A (en) | 1975-02-26 |
Family
ID=10429876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4368971A Expired GB1385326A (en) | 1971-09-20 | 1971-09-20 | Co-polymerisation process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1385326A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104448092A (en) * | 2014-12-29 | 2015-03-25 | 周大胜 | Impact-resistant chloroethylene copolymer resin and preparation method thereof |
-
1971
- 1971-09-20 GB GB4368971A patent/GB1385326A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104448092A (en) * | 2014-12-29 | 2015-03-25 | 周大胜 | Impact-resistant chloroethylene copolymer resin and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |