GB1477344A - Block copolymer and process for its production - Google Patents
Block copolymer and process for its productionInfo
- Publication number
- GB1477344A GB1477344A GB4229774A GB4229774A GB1477344A GB 1477344 A GB1477344 A GB 1477344A GB 4229774 A GB4229774 A GB 4229774A GB 4229774 A GB4229774 A GB 4229774A GB 1477344 A GB1477344 A GB 1477344A
- Authority
- GB
- United Kingdom
- Prior art keywords
- block
- styrene
- monomer
- copolymer
- alkenylaromatic
- 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
- C08F297/02—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 anionic type
- C08F297/04—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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Graft Or Block Polymers (AREA)
Abstract
1477344 Thermoplastic block copolymers SUMITOMO CHEMICAL CO Ltd 30 Sept 1974 [29 Sept 1973 5 Oct 1973] 42297/74 Heading C3P A block copolymer comprising 65 to 90% of an alkenylaromatic monomer and 10 to 35% of a conjugated diene monomer contains at least one vinylic block obtained from one or more of the alkenylaromatic monomers only and at least one terminal copolymer block of the diene and the alkenylaromatic monomer, the vinylic block(s) containing 35 to 90% of the total alkenyl aromatic monomer in the polymer, and the ratio of the alkenyl aromatic monomer to the conjugated diene being from 0À2 ; 1 to 3À0 ; 1 in each copolymer block. The block copolymers are obtained by sequential polymerization in a hydrocarbon solvent using an organolithium initiator, and in the presence of a Lewis base, e.g. an ether or amine, in at least the copolymer block formation stage(s). Two or three stage organomonolithium- and two stage organodilithium-initiated polymerizations are referred to. In the examples, styrene-b-styrene-co-butadiene and styrene-cobutadiene - b - styrene - b - styrene - co - butadiene block copolymers are prepared by sequential polymerization using n-butyl Li or oligo-isoprenyl-of oligobutadienyl-diLiinhexane or benzene containing minor amounts of tetrahydrofuran.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10994673A JPS5748571B2 (en) | 1973-09-29 | 1973-09-29 | |
| JP11259373A JPS5748572B2 (en) | 1973-10-05 | 1973-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1477344A true GB1477344A (en) | 1977-06-22 |
Family
ID=26449654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4229774A Expired GB1477344A (en) | 1973-09-29 | 1974-09-30 | Block copolymer and process for its production |
Country Status (6)
| Country | Link |
|---|---|
| CA (1) | CA1044841A (en) |
| DE (1) | DE2446255C3 (en) |
| FR (1) | FR2272110B1 (en) |
| GB (1) | GB1477344A (en) |
| IT (1) | IT1019430B (en) |
| NL (1) | NL157025B (en) |
-
1974
- 1974-09-26 NL NL7412706A patent/NL157025B/en not_active IP Right Cessation
- 1974-09-27 DE DE19742446255 patent/DE2446255C3/en not_active Expired
- 1974-09-27 CA CA210,254A patent/CA1044841A/en not_active Expired
- 1974-09-27 IT IT5326274A patent/IT1019430B/en active
- 1974-09-27 FR FR7432678A patent/FR2272110B1/fr not_active Expired
- 1974-09-30 GB GB4229774A patent/GB1477344A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2272110A1 (en) | 1975-12-19 |
| CA1044841A (en) | 1978-12-19 |
| DE2446255B2 (en) | 1979-12-20 |
| DE2446255C3 (en) | 1980-08-21 |
| NL157025B (en) | 1978-06-15 |
| NL7412706A (en) | 1975-04-02 |
| DE2446255A1 (en) | 1975-04-03 |
| IT1019430B (en) | 1977-11-10 |
| FR2272110B1 (en) | 1978-07-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |