http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2301236-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_320b84acd71d70922c6d5954a5824517 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d2a47e349b64fc8303b7757311898deb |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F236-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-54 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F236-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F236-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F236-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-618 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-52 |
| filingDate | 2002-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2007-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1c882857b751d08793d7bd4999d5bac2 |
| publicationDate | 2007-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2301236-C2 |
| titleOfInvention | Butadiene/isoprene copolymer production process and resulting copolymers |
| abstract | FIELD: polymerization processes. n SUBSTANCE: invention, in particular, relates to production of random butadiene/isoprene copolymers and consists in the following. Random butadiene/isoprene copolymer is obtained via interaction of butadiene and isoprene in presence of catalytic system. The latter is a system based on at least one conjugated diene monomer, organic phosphorus acid salt with one or more rare-earth metals, alkylation agent consisting of alkylaluminum of formula AlR 3 or HAlR 2 , and a halogen donor represented by alkylaluminum halide. Above-mentioned salt is present in suspension of at least one inert saturated aliphatic or alicyclic hydrocarbon solvent included in said catalytic system. Molar ratio of alkylation agent to salt of one or more rare-earth metal(s) varies between 1:1 and 8:1. Reaction is conducted in inert hydrocarbon solvent or without solvent. Random butadiene/isoprene copolymer obtained according to claimed method is such in which butadiene and isoprene units are in reality randomly alternated in accordance with Bernoulli formula. Glass transition temperature T Gexp of the copolymer as measured by differential enthalpimetric analysis satisfies following inequality: -0.05 = (T Gexp - T Gth ) = 0.05, wherein T Gth represents theoretic glass transition temperature of the copolymer calculated in terms of Fox equation: 1/T Gth = α/ T g(br) + β/ T G(ir) , wherein T g(br) and T G(ir) represent, respectively, glass transition temperatures measured by differential enthalpimetric analysis for polybutadiene and polyisoprene synthesized with the aid of indicated catalytic system, wherein α and β are, respectively, weight fractions of butadiene and isoprene units. Random butadiene/isoprene copolymers have elevated content of cis-1,4 bonds. n EFFECT: enabled production of copolymers, which have real random distribution of butadiene and isoprene units. n 2 cl, 2 tbl |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2607813-C2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9714338-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2505552-C2 |
| priorityDate | 2001-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 118.