http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2552796-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-657127 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-65744 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-527 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-527 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-6574 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-6571 |
| filingDate | 1975-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6732d2f3c3be9b10ed210b4bfeab444b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_837faf42a83b9ea975c92d1ff6d87253 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a2210b4d10482e818c9a475e026b4fe http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_16d6f034393c2522fc0c7caca4eeb6b5 |
| publicationDate | 1977-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2552796-A1 |
| titleOfInvention | PHOSPHITESTERS OF 4,6-DIALKYL PYROGALLOLS, THEIR PRODUCTION AND USE |
| abstract | New phosphite esters of 4,6-dialkyl pyrogallols have formula (I) (where R1 is 1-30C alkyl or alkylene or opt. alkyl-substd. Ph or phenylene or a naphthyl or naphthylene gp. R2 and R3 are opt. different 1-4C alkyl. X is -O- or -S- and n is 1 or 2). (I), together with standard heat- and light-stabilisers, are used for heat- and light-stabilising plastics, e.g. polyurethanes, polyesters, polyamides, polyvinylidene chloride, PVC, ABS-copolymers, impact-resistant polystyrene and esp. polyolefins. (I) have high heat- and light-stabilising activity, partic. in synergetic mixts. with standard stabilisers. E.g. in stabilising polypropylene, addn. of 0.3 wt. % (I) to standard stabiliser mixt. increased test sample life from 605 to 880 hrs. Phenolic OH vicinal to phosphite ester bond increases anti-oxidative and light-stabilising activity of (I). (I) are solid and can be admixed to plastics together with the other solid stabilisers. In an example, methyl-(4,6-di-tert. butyl)pyrogallol phosphite was prepd. from 0.7 mol 4,6-di-tert.-butyl pyrogallol and 1.5 mol. trimethyl phosphite. |
| priorityDate | 1975-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 79.