http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008214874-A1
Outgoing Links
Predicate | Object |
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assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4411f9daac33a864e9e4b2e39109a379 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7e7399918b02a80440ce29c40e557b33 |
classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-038 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-023 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2261-312 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 |
classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G61-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D125-18 |
classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03F7-038 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03F7-023 |
classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G61-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G61-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D125-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C41-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-76 |
filingDate | 2008-04-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dfe8023d12e76d721e7f1fa2170e61a6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7408f8abaf404fe7c23b02731d5da898 |
publicationDate | 2008-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber | US-2008214874-A1 |
titleOfInvention | Derivatized polyhydroxystyrenes with a novolak type structure and processes for preparing the same |
abstract | A process for preparing derivatized poly(4-hydroxystyrene) having a novolak type structure which comprises the steps of (i) supplying a solution of methanol containing 4-hydroxyphenylmethylcarbinol, (ii) subjecting said solution to an acid catalyzed displacement reaction for a sufficient period of time and under suitable conditions of temperature and pressure to convert substantially all of said carbinol to 4-hydroxyphenylmethylcarbinol methyl ether in solution, (iii) polymerizing said ether containing solution in the presence of a suitable acid catalyst for a sufficient period of time and under suitable conditions of temperature and pressure to form a novolak type polymer. New compositions of matter which comprise the derivatized poly(4-hydroxystyrene) prepared in the above manner and which have application in the electronic chemicals market such as in a photoresist composition, and in other areas such as in varnishes, printing inks, epoxy resins, copying paper, tackifiers for rubber, crude oil separators, and the like. |
priorityDate | 2004-05-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 80.