http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2220136-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7cd3aff7db92d73081635316f5ae2336 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2666-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S525-901 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2666-24 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F297-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F297-044 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L53-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09J153-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L53-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09J153-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F297-04 |
| filingDate | 2008-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dd72df7aa9dd363ae04815d443847b69 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1405645fb45b70ec73a4663f215ba8d7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_736cd3ff631420c8d89420b98d4925a3 |
| publicationDate | 2010-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2220136-A1 |
| titleOfInvention | Radial multi-block copolymers |
| abstract | A radial multi-block copolymer composition comprising a polystyrene block A1, a hard block A2 comprising another type of monovinylarene monomer, two soft blocks B1 and B2 of conjugated diene monomer and a coupling agent, the composition of the radial multi- block copolymer having the structure (B1A1A2B2)HZ, where the weight percent of n=5+ is greater than about 40 and Z is a residue of the coupling agent. A process comprising (a) anionically polymerizing styrene monomer A1, at least one monovinylarene monomer A2 other than styrene, and at least one conjugated diene monomer B1 to form multi-block copolymer chains having the structure (B1A1A2), wherein the amount of monovinylarene monomer A2 is from about 0.5 wt % to about 80 wt % of the total amount to form a hard block A1A2; (b) anionically polymerizing at least one conjugated diene monomer to form copolymer chains having a soft block B2 and a polydienyllithium carbanion at the end of the copolymer chains; (c) adding a metal alkyl coupling promoter, preferably triethylaluminum, after initiating anionic polymerization and before reaching a peak reaction temperature; and (d) mixing in a coupling agent to form a copolymer having a residue (Z) of the coupling agent, wherein the copolymer is a radial multi-block copolymer having the structure (B1A1A2B2)J1Z, and wherein the weight percent of n=5+ is greater than about 40. The radial multi-block copolymer has application in pressure-sensitive adhesives, engineering plastics, and polymer-modified asphalts with good control of viscosity and without yellowness. |
| priorityDate | 2007-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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