http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1053234-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_94aafba413093babffa661ec0ca0c362 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2203-142 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-122 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-127 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-147 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-12 |
| filingDate | 1963-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4054c85544e0091ea9fd0ba922894dc2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1875f71eab9c51200eef83ed6985dbe6 |
| publicationDate | 1966-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1053234-A |
| titleOfInvention | Formation of foamed resin |
| abstract | <PICT:1053234/C3/1> A foamed resin is produced by passing a liquid resin precursor through two distinct mixing zones, adding fluid blowing agent in the first zone, adding hardening catalyst or curing agent in the second zone and ejecting the mixture from the second zone to allow it to foam and harden. The method may be used (a) to copolymerize a polyester of a polyol and an unsaturated dicarboxylic acid with an olefinically unsaturated monomer, (b) to prepare a framed polyurethane and (c) to prepare an epoxy-resin. The unsaturated polyester may be prepared from a glycol, an unsaturated dicarboxylic acid or its anhydride. 0.5-4 moles of a saturated dicarboxylic acid may also be present, 0-20% excess of polyol may be used. The polyester may have an acid number of 0-60. The polyester may be mixed with the monomer, a surface-active agent, a film toughening agent, e.g. another resin, a drier, or a flame retardant. Mixtures of polyesters may be used. The curing catalyst may be a peroxide suspended in an inert liquid. In examples polyesters are prepared from isophthalic acid, triethylene glycol, maleic anhydride, dipropylene glycol and propylene glycol; olefinic monomers are styrene and vinyl toluene and other additives are hydroquinone, diisobutylphenoxyethoxyethyl dimethyl benzyl ammonium chloride, copper naphthenate, cellulose acetate butyrate, chlorinated paraffin, Sb2O3, and cobalt octoate. In polyurethane preparation the liquid resin precursor may be a polyol to which polyisocyanate is added as curing agent. The polyol may be a polyester of a dicarboxylic acid and excess glycol or higher polyol having an OH value of 40-100 or a sorbitol/olefin oxide adduct. The polyisocyanate may be replaced by an isocyanate terminated prepolymer. The reaction mixture may contain 0.1-3% surface-active agent. 0.1-5% catalyst may be used. The blowing agent may be CO2 or a halocarbon, e.g. CCl2F2 or CCl3F. 0.5-40% may be used. In a specific embodiment, Fig. 1, the polymerizable mixture is fed from 10 into zone 11 via pump 17. The feed to 11 may be under pressure and should have a viscosity of at least 6000 centipoise. The temperatures of 10 and 11 are controlled by heat exchangers 18 and 19. Blowing agent is added via 21 and 22 and the mixture is agitated by stirrer 27 and/or by recycling through 31, 17 and 16b. 36 is an assembly for removing entrained gases and 84 is a sampling device. The mixture is fed from 11 to ejector 12, via pump 46, cooler 53a and inlet 52. A sampling device may be provided between 11 and 12. Catalyst, optionally containing a diluent and 5-10% of the total blowing agent may be supplied to 12 via 69 and 70. The mixture is stirred by stirrer 58 and discharged through orifice 77, the flow being controlled by clamp 76. In another embodiment 11 may be replaced by a mixer similar in design to 12. The products may be moulded or used to coat walls. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2116574-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2355646-A1 |
| priorityDate | 1963-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 58.