http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-675673-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6eaf3bfb056852ae3463d2645e44ed13 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2301-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2401-00 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J7-052 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J7-0427 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J7-052 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-46 |
| filingDate | 1949-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7cee35cc1ddf47dbf0e050f91fa590fb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2098e5ba369fc50d085caa3dc8deea93 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bc1b00b0b56967dc473897a9248be6ae |
| publicationDate | 1952-07-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-675673-A |
| titleOfInvention | Improvements in or relating to the manufacture of artificial resins, and to coating compositions, particularly for coating regenerated cellulose films |
| abstract | In making an artificial resin, a rosin is heated with an aliphatic polyhydric alcohol at 150 DEG to 200 DEG C. for 1/2 to 2 hours and the resulting product is heated at 200 DEG to 300 DEG C. for 2 to 10 hours with a saturated aliphatic dicarboxylic acid having a molecular weight of 104 to 234, the proportion, in parts by weight, of rosin to polyhydric alcohol being from 100 : 10 to 100 : 30 and that of rosin to dicarboxylic acid being from 100 : 10 to 100 : 50. The term "rosin" includes fossil rosin (copal), wood rosin, abietic acid, hydrogenated rosin, heat-polymerized rosin, a rosin derivative known as "Polypale" (Registered Trade Mark) and modified rosin, i.e. a purified rosin. Polyhydric alcohols specified are ethylene glycol, glycerol, pentaerythritol or mixtures thereof which may be adventitious, such as that obtained by the reduction of sugars. Dicarboxylic acids specified are malonic, glutaric and succinic acids, the last two may be used in the form of acid or anhydride or a mixture of acid and anhydride. An acidic condensing agent, e.g. phosphoric acid, may be used for condensing the acid with the esterified rosin, thus phosphoric acid may be added to the melted rosin ester and the mixture added to the dicarboxylic acid; magnesium carbonate may be added to the resulting mixture. The resins may be used in admixture with nitrocellulose, one or more waxes such as paraffin, bees, carnauba and candelilla waxes, and a volatile organic solvent or solvent mixture, e.g. ethyl acetate alone or in admixture with toluene, as a moisture-proofing coating composition for sheets or films of organic material such as films of regenerated cellulose, lowly substituted cellulose ethers or esters, gelatine, alginic derivatives, paper, parchment and glassine. Plasticizers for nitrocellulose, e.g. dibutyl phthalate, tricresyl phosphate and dicyclohexyl phthalate, may be included in the coating compositions. In examples: (1) a resin obtained from polymerized rosin, glycerol and succinic acid was mixed with nitrocellulose, dibutyl phthalate, dicyclohexyl phthalate, paraffin wax, toluene and ethyl acetate and the resulting composition was applied to a regenerated cellulose film; the resin obtained from (ii) polymerized rosin, glycerol and glutaric acid, and the resins obtained by using (iii) adipic acid, (iv) suberic acid, (v) sebacic acid, instead of succinic acid in example (1), were used to replace the resin in the coating composition of example (i). Specifications 485,641 and 555,084 are referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-1207244-B |
| priorityDate | 1949-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 63.