GB970478A - Copolymers of ethylene and propylene - Google Patents
Copolymers of ethylene and propyleneInfo
- Publication number
- GB970478A GB970478A GB45731/61A GB4573161A GB970478A GB 970478 A GB970478 A GB 970478A GB 45731/61 A GB45731/61 A GB 45731/61A GB 4573161 A GB4573161 A GB 4573161A GB 970478 A GB970478 A GB 970478A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ethylene
- propylene
- hydrogen
- polymerization
- monomer
- 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
- C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
- C08F297/06—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type
- C08F297/08—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins
- C08F297/083—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins the monomers being ethylene or propylene
-
- 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
- C08F8/00—Chemical modification by after-treatment
- C08F8/50—Partial depolymerisation
-
- 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
- C08F2810/00—Chemical modification of a polymer
- C08F2810/10—Chemical modification of a polymer including a reactive processing step which leads, inter alia, to morphological and/or rheological modifications, e.g. visbreaking
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Graft Or Block Polymers (AREA)
Abstract
A block copolymeric material, obtained from ethylene and propylene, contains 1-40% by weight of ethylene and has a low temperature brittle point below -5 DEG C. and a melt index of 5 or above. The materials are produced by subjecting a block copolymer of ethylene and propylene, containing 1-40% by weight of ethylene to thermal degradation, or by continuously introducing hydrogen into the polymerization zone during the polymerization of at least one monomer. Block copolymerization is carried out using a catalyst of which one component is an organo-metallic compound and the other a compound (usually a halide) of a transition metal from Group IV-VI of the Periodic Table, at a temperature of 10-90 DEG C. in an inert solvent. Hydrogen is mixed with one or more of the monomers fed to the reaction mixture, or it may be separately fed continuously to the reaction mixture throughout polymerization, or throughout the addition of one monomer only. Hydrogen is suitably present in molar proportions to the monomers polymerized of 0.01 to 5%. When thermal degradation is used to prepare the polymers according to the invention this can be brought about in a number of different ways, preferably by extrusion at a temperature of 250 DEG -350 DEG C. Other apparatus such as mixers, kneading apparatus and heated mill rolls can also be used. Known stabilizers, carbon black or other pigments or fillers may be incorporated in the material before or during the process. Specification 970,479 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB45731/61A GB970478A (en) | 1961-12-20 | 1961-12-20 | Copolymers of ethylene and propylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB45731/61A GB970478A (en) | 1961-12-20 | 1961-12-20 | Copolymers of ethylene and propylene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB970478A true GB970478A (en) | 1964-09-23 |
Family
ID=10438345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB45731/61A Expired GB970478A (en) | 1961-12-20 | 1961-12-20 | Copolymers of ethylene and propylene |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB970478A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0072128A2 (en) | 1981-08-07 | 1983-02-16 | Imperial Chemical Industries Plc | Spraying solid |
| FR2557118A1 (en) * | 1983-12-24 | 1985-06-28 | Stamicarbon | SHOCK RESISTANT ETHYLENE SEQUENCE COPOLYMER AND PROCESS FOR PREPARING SUCH COPOLYMER SEQUENCE |
| FR2557119A1 (en) * | 1983-12-24 | 1985-06-28 | Stamicarbon | PROCESS FOR PREPARING SHOCK-RESISTANT ETHYLENE / PROPYLENE SEQUENCE COPOLYMER |
| FR2557117A1 (en) * | 1983-12-24 | 1985-06-28 | Stamicarbon | SHOCK RESISTANT ETHYLENE-PROPYLENE COPOLYMER AND PROCESS FOR PREPARING THE SAME |
-
1961
- 1961-12-20 GB GB45731/61A patent/GB970478A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0072128A2 (en) | 1981-08-07 | 1983-02-16 | Imperial Chemical Industries Plc | Spraying solid |
| FR2557118A1 (en) * | 1983-12-24 | 1985-06-28 | Stamicarbon | SHOCK RESISTANT ETHYLENE SEQUENCE COPOLYMER AND PROCESS FOR PREPARING SUCH COPOLYMER SEQUENCE |
| FR2557119A1 (en) * | 1983-12-24 | 1985-06-28 | Stamicarbon | PROCESS FOR PREPARING SHOCK-RESISTANT ETHYLENE / PROPYLENE SEQUENCE COPOLYMER |
| FR2557117A1 (en) * | 1983-12-24 | 1985-06-28 | Stamicarbon | SHOCK RESISTANT ETHYLENE-PROPYLENE COPOLYMER AND PROCESS FOR PREPARING THE SAME |
| EP0150450A3 (en) * | 1983-12-24 | 1985-08-21 | Stamicarbon B.V. | Process for preparing an impact-resistant ethylene-propylene block copolymer |
| EP0149827A3 (en) * | 1983-12-24 | 1985-08-21 | Stamicarbon B.V. | Impact-resistant ethylene-propylene block copolymer and process for preparing such a block copolymer |
| EP0149828A3 (en) * | 1983-12-24 | 1985-08-21 | Stamicarbon B.V. | Impact-resistant ethylene-propylene block copolymer and process for preparing such a block copolymer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3236917A (en) | Elastomer of an ethylene copolymer cross-linked with an unsaturated acid or anhydride | |
| ES8601239A1 (en) | Butadiene polymerisation process. | |
| US2418978A (en) | Method for hardening of polymers | |
| US3291863A (en) | Thermoplastic mixtures of vinyl chloride polymers with chlorinated polyolefins of high molecular weight and process for preparing same | |
| US3563974A (en) | Linear polyethylene chlorination | |
| US3347835A (en) | Process for the chlorosulfonation of polyethylene | |
| US3270090A (en) | Method for making graft copolymers of polyolefins and acrylic and methacrylic acid | |
| Purgett et al. | Functional polymers. XLIX. Copolymerization of ω‐alkenoates with α‐olefins and ethylene | |
| ES438750A1 (en) | Process for preparing impact resistant styrene polymers | |
| ES457413A1 (en) | High pressure ethylene polymerization using catalysts of the ziegler type | |
| GB970478A (en) | Copolymers of ethylene and propylene | |
| JP2782455B2 (en) | Polymerization of pentabromobenzyl ester monoacrylate | |
| US3647922A (en) | Mixtures of polyolefins of high impact strength having an improved transparency | |
| ES424899A1 (en) | Bulk polymerization of vinyl chloride | |
| Martinez et al. | Specific polymer-solvent interaction and stereospecificity of nucleophilic substitution reaction of PVC | |
| JPH1045838A (en) | Manufacture of ethylene/vinyl acetate copolymer | |
| US3264253A (en) | Polymer compositions | |
| US3923759A (en) | Process for the preparation of isobutylene/beta-pinene copolymers | |
| US3000867A (en) | Novel ethylene-propylene copolymer and method for producing same | |
| US3189585A (en) | 2-vinyl-6, 6-dimethylnorpinane and polymers thereof | |
| US2895921A (en) | Preparation of oxetane polymers | |
| SU366723A1 (en) | Method for producing statistical divinyl styrene rubbers | |
| US3380982A (en) | Method for formation of three-dimensional structures in saturated carbon chain polymers | |
| US2967855A (en) | Copolymers and process for preparing the same | |
| NO783171L (en) | STUDENT RESISTANT, HIGH SOFTENING MALEIC ACID ANHYDRID COPY |