http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5143971-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b94baf1aad802afc19b0e63b4499b04d |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2333-06 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-12 |
| filingDate | 1990-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1992-09-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_93100289d0ed9ab1048677cc93c4e5b1 |
| publicationDate | 1992-09-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5143971-A |
| titleOfInvention | Rubbery carboxylated acrylate polymer, latex, and preparation thereof |
| abstract | A novel latex is derived from a crosslinked carboxylate latex containing from 1-20 phr of itaconic acid (IA) and at least 70 phr of one or more copolymerizable monomers one of which is an acrylate having the structure <IMAGE> (I) wherein R1 is hydrogen or methyl; R2 represents C1-C20 alkyl, C2-C7 alkoxyalkyl, C2-C7 alkylthioalkyl, or C2-C7 cyanoalkyl; and at least 40 phr of said acrylate in said film is present as an alkyl acrylate in which alkyl is C4-C8. The latex can only be formed in an aqueous medium by an emulsion polymerization process in which at least one-half of the IA is initially charged into a reactor, and the remaining ingredients of the receipe then added gradually. This unique order of addition produces a highly stable latex of polymer particles having a glass transition temperature (Tg) in the range from about -20 DEG C. to about -60 DEG C., and having on their surfaces, a concentration of carboxyl (COOH) groups which is at least twice that of COOH groups on particles of a latex formed by conventionally proportioning the monomer ingredients after initiation. The unique distribution of COOH groups permits the latex to be sprayed, for example on a non-woven fabric, without plugging the nozzle of a commercial spray gun, and imparts unexpectedly high blocking resistance to the non-woven. The unique characteristic concentration of carboxyl groups persists in an elastomeric film obtained by removing volatiles from the coalesced polymer particles. A self-supporting film is soft, but tough, with a raw tensile strength of at least 300 psi, at elongation of at least 350%, and exhibits less than 20% hysteresis loss. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6080803-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6369154-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6641879-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2012153090-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AU-781491-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-1976960-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5910533-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1044616-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1044616-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8292245-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2006000385-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2006000385-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6624274-B1 |
| priorityDate | 1986-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 340.