http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-497737-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f98715a64276bebda50500dfb6480450 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B17-10605 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B17-10761 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-103 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-103 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B17-10 |
| filingDate | 1937-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1938-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-497737-A |
| titleOfInvention | Polyvinyl acetal resin compositions |
| abstract | Water-insoluble polyvinyl acetal resins containing 35-94 per cent acetal groups, hydroxyl groups and substantially no ester groups are plasticized by polyethyleneglycol hexanoates. The resin may be prepared from a polyvinyl body of molecular weight above 10,000, preferably above 25,000; the aldehyde used may be aliphatic, with two to six carbon atoms, preferably saturated and straight-chained, e.g. propionaldehyde, butyraldehyde, or valeraldehyde. Hexanoates specified are n-hexanoates, 2-ethyl-butyrates, or 2-methyl-pentanoates, and those of di-, tri-, tetra-, or penta-ethyleneglycol. Specified compositions comprise polyvinyl acetals containing 64,5, 66, or 66,5 per cent butyraldehyde acetal groups mixed with tri-ethyleneglycol di-(2-ethylbutyrate), and polyvinyl acetal (66 per cent butyraldehyde acetal) mixed with triethyleneglycol di-(2-methyl-pentanoate). The compositions may be used as interlayers in safety glass. Specifications 497,736 and 497,739 are referred to. Triethyleneglycol di-(2-ethylbutyrate) is prepared by reacting triethyleneglycol with 2-ethyl-butyric acid in the presence of sulphuric acid, the water of reaction being azeotropically removed by benzene. The reaction mixture is neutralized, and the ester washed with water and distilled under reduced pressure. Diethyleneglycol di-(2-ethylbutyrate), triethyleneglycol di-(2-methylpentanoate), tetraethyleneglycol di-(2-ethylbutyrate), and pentaethyleneglycol di-(2-ethylbutyrate) are similarly prepared. |
| priorityDate | 1936-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.