http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4438575-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_97f8939cf76e68731c5704c708ac7a89 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D249-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F20-60 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D249-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-3475 |
| filingDate | 1994-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4ba2de5b8927e474b092d991ea2ab9eb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e28ab15183906095ee229ae3a1d7a125 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8368f11e099c498a9a89e11a647234db http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3f5f2f53d9481a1c5226c635247ccf62 |
| publicationDate | 1996-05-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-4438575-A1 |
| titleOfInvention | Process for the preparation of a radically polymerizable UV absorber based on benzotriazolylphenol |
| abstract | Prepn. of a UV absorber of formula R'-CH2-R'' (I), which is capable of free radical polymerisation, comprises condensing a 2-(2'-hydroxyphenyl)-benzotriazole of formula R'-H (II) with N-methylol(meth)acrylamide in homogeneous phase in H2SO4 in 1 stage. The novel features are that (a) condensation is carried out at 0-10 deg C and (b) pptn. of the condensate dissolved in H2SO4 is effected by addn. of excess water at over 80 deg C, where R' = a 2-hydroxy-3-benzotriazol-2-ylphenyl gp. of formula (III): R1 = H, 1-12C alkyl or 6-10C aryl; R2 = halogen or as R1; R'' = -NH-CO-CR3=CH2; R3 = H or Me. Also claimed is (I) prepd. in this way, a 2% soln. of which in methyl methacrylate (MMA) has a colour no. of less than 50, pref. less than 30. |
| priorityDate | 1994-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.