| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_27b1993f7619afccfff0a5648a5df8ca
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7ac00d4a1f9cf1f62f7c3fe4fba786ca
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_98ea03ea82ddda1b5e19c818ea7c91f8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_868d6ec3caf0c9e17c3dcdb119f4648c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7f7c654027d101be509b40f8c24de6c7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fab82a381f9d0ff8a604cb09e446c878
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4e9c3b11b13aaece4d084197217a977b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_08a7853e2f3a075e31f0f85237c27f17 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S525-902 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F285-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F285-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-22 |
| filingDate |
1998-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c3cf7bb0b396b35a3f33955b0a4be15
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1b9b1b5a9cd04bcf922210d6ff200ffa
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9960ed0ea7147262209e3648133dd27b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_58f70c8b88aa43c21f127f7ad2ad11c6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7c0cc0151b0e59c540f76bfdad7c1d7d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce1a83cfa18db894875a6e52cc811f10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ec88fd6297009d98aeb255b27a4593b |
| publicationDate |
1998-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-9839372-A1 |
| titleOfInvention |
A method for the preparation of hollow polymer particle latex |
| abstract |
The present invention is concerned with a method for the preparation of latexes with hollow polymer particles useful as opacifying agents. The process comprises the preparation of hollow polymer particle latex by emulsion copolymerization with water soluble initiator and anionic surfactant as follows: a) preparation of seed latex of copolymer containing methyl methacrylate and methacrylic acid; b) preparation of latex of highly carboxylated copolymer containing methyl methacrylate and a cross-linking agent and optionally a vinyl aromatic compound; c) using highly carboxylated latex synthesized at stage b) in the preparation of the intermediate shell comprising a copolymer of methyl methacrylate, acrylic acid ester; a cross-linking agent and optionally vinyl aromatic compound, said intermediate shell copolymer having a glass transition temperature below 80 °C; d) swelling the particles prepared at stage c) by addition of volatile basic compound; e) preparation of a hard shell on the swollen expanded particles comprising a copolymer of vinyl aromatic compound, acrylonitrile and/or methyl methacrylate, and cross-linking agent, said hard shell having a glass transition temperature above 80 °C; and f) optional preparation of an external shell. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0068310-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0160510-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6458501-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1710278-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1710278-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6885699-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0075221-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0075194-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0068304-A1 |
| priorityDate |
1997-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |