http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4011179-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e938e28337fbaa9944d781f3ccf86b5e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C44-461 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B17-0243 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C44-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B17-02 |
| filingDate | 1975-02-07^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1977-03-08^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f2bd0fa1c2815d13a99351b5b38b4b39 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9fc033a65ae9e2a420c49b5d8a488710 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_811de7c222c37b35fe30ebebb0b95905 |
| publicationDate | 1977-03-08^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4011179-A |
| titleOfInvention | Continuous sulfur foam preparation using polyisocyanates |
| abstract | A process for the production of sulfur foam containing at least 50 weight percent sulfur, which comprises: n A. heating sulfur in a first zone to a temperature above about 100° C to obtain molten sulfur and reacting the molten sulfur with an organic protonic acid which is reactive with molten sulfur so as to incorporate the organic acid with sulfur to form a sulfur-organic acid adduct containing unreacted protonic acid groups; n B. passing said sulfur adduct in liquid state out of said first zone and into a separate mixer; and n C. mixing and reacting in said mixer a polyisocyanate with the unreacted acid groups of said sulfur adduct to thereby, upon removal of the polyisocyanate-acid group reaction product from the mixer, release gas and generate a foam. n Preferably the sulfur adduct is formed by reacting sulfur with a plasticizer as well as the acid. The plasticization resulting from phenol reacting with sulfur is particularly preferred, and preferably the liquid phenolmodified sulfur-acid adduct is reacted with polyisocyanate in the mixer within a residence time of 0.1 to 3.0 seconds and within a temperature range of 110° to 140° C. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4302255-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4111864-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4387167-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4079023-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4144082-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5569153-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4450069-A |
| priorityDate | 1972-08-17^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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