NL6913925A - Pourable block copolymers suitable for sol- - vent free casting - Google Patents
Pourable block copolymers suitable for sol- - vent free castingInfo
- Publication number
- NL6913925A NL6913925A NL6913925A NL6913925A NL6913925A NL 6913925 A NL6913925 A NL 6913925A NL 6913925 A NL6913925 A NL 6913925A NL 6913925 A NL6913925 A NL 6913925A NL 6913925 A NL6913925 A NL 6913925A
- Authority
- NL
- Netherlands
- Prior art keywords
- alkadiene
- pourable
- sol
- degrees
- block copolymers
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
- C08G81/02—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C08G81/021—Block or graft polymers containing only sequences of polymers of C08C or C08F
- C08G81/022—Block or graft polymers containing only sequences of polymers of C08C or C08F containing sequences of polymers of conjugated dienes and of polymers of alkenyl aromatic compounds
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)
- Graft Or Block Polymers (AREA)
Abstract
These are prepared by (a) polymerising an alkadiene at 0-100 degrees C in contact with 0.005-0.2 moles. per mole of alkadiene, of a catalyst of formula RLi, where R is a 2-20C (cyclo)alkyl or aralkyl group, (b) bringing the Li-containing polyalkadiene from (a) into contact with 10 moles %, calculated on the number of monomer units in the polyalkadiene, of a multivinyl-aromatic hydrocarbon at between -30 degrees and +50 degrees C and (c) deactivating the catalyst and recovering the block copolymer. Alternatively, in step (a), a monovinylaromatic hydrocarbon may be copolymerised with the alkadiene, and the copolymer so formed passed to step (b). The block copolymer has a bulk viscosity at room temp. of 0.05-200 Stokes, pref. 0.1-100 Stokes, and can be used for encapsulation in the absence of a solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6913925A NL6913925A (en) | 1969-09-12 | 1969-09-12 | Pourable block copolymers suitable for sol- - vent free casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6913925A NL6913925A (en) | 1969-09-12 | 1969-09-12 | Pourable block copolymers suitable for sol- - vent free casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6913925A true NL6913925A (en) | 1971-03-16 |
Family
ID=19807893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6913925A NL6913925A (en) | 1969-09-12 | 1969-09-12 | Pourable block copolymers suitable for sol- - vent free casting |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL6913925A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0046668A2 (en) * | 1980-08-25 | 1982-03-03 | Japan Elastomer Company Limited | Process for producing high impact polystyrene |
-
1969
- 1969-09-12 NL NL6913925A patent/NL6913925A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0046668A2 (en) * | 1980-08-25 | 1982-03-03 | Japan Elastomer Company Limited | Process for producing high impact polystyrene |
| EP0046668A3 (en) * | 1980-08-25 | 1982-03-24 | Japan Elastomer Company Limited | Process for producing high impact polystyrene |
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