http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2010146694-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-307 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-00 |
| filingDate | 2009-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2012-05-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2010146694-A |
| titleOfInvention | IMPROVED FLOW POLYCARBONATES CONTAINING REGROUPED STRUCTURES, CYCLIC AND LINEAR OLIGOMERS |
| abstract | 1. Polycarbonate containing one or more structures corresponding to the general formulas (I) - (IV):! ! ! ! ,! in which the phenyl rings independently of one another can be substituted once or twice by alkyl with 1-8 carbon atoms, a halogen such as chlorine or bromine, and X such as indicated in formula (1a),! moreover, the total number of structural units (I) - (IV) in terms of the corresponding polycarbonate is from 50 to 900 ppm,! and also containing linear and cyclic oligomers in a total amount of from 0.1 to 2 wt.% in terms of the total composition,! moreover, linear oligomers have the formulas (V) - (IX):! ! ! ! ! ! moreover, the number of structures (VIII) and (IX) is less than 0.001 wt.%,! and wherein cyclic oligomers have the general formula (X):! ! wherein ! n is an integer from 2 to 6, and! Z means the remainder of the formula (1a):! ! wherein ! R1 and R2 independently of one another mean hydrogen or alkyl with 1-8 carbon atoms, and! X is a single bond, alkylene with 1-6 carbon atoms, alkylidene with 2-5 carbon atoms or cycloalkylidene with five or six carbon atoms, which may be substituted by alkyl with 1-6 carbon atoms. ! 2. Polycarbonate according to claim 1, wherein the amount of the compound of formula (I) is from 50 to 800 ppm, of formula (II) from 0 to 100 ppm, of formula (III) from 0 to 100 ppm and formula (IV) from 0 to 300 ppm ! 3. Polycarbonate according to claim 1, which is characterized by the following heterogeneity:! for polycarbonate with a weight average molecular weight of 18,000 to 22,000 g / mol, the degree of heterogeneity is from 1.08 to 1.18,! for polycarbonate with a weight average molecular weight of 22,000 to 26,000 g / mol, the degree of heterogeneity is from 1.18 to 1.60,! for polycarbonate � |
| priorityDate | 2008-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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