http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-970669-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8b919a09598a02c07e8429b1441b76e1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G2-00 |
| filingDate | 1962-11-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1964-09-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-970669-A |
| titleOfInvention | Polymeric materials |
| abstract | Anhydrous trioxane is polymerized using an acid particulate heterogeneous catalyst which is (1) an oxygen-containing inorganic compound of at least one metal of Group IIa, IIIa, IIIb and IVb, the anionic portion of the compound containing oxide, silicon oxide and/or carbonates or (2) a cationic exchange material containing a phenolic, sulphonic, carboxylic, phosphorous or phosphonic acid group or (3) a mixture of (1) and (2). Specified materials include alumina, silica alumina, bona montmorillorite, or the cationic exchange resins produced by reacting phenol with formaldehyde and a sulphonic acid, by oxidising coal with nitric acid, the reaction product of caustic, 1-3-5-resorcylic acid and formaldehyde, the sulphonated products of coal, lignite and peat, and the reaction product of phenol, acrolein and the semi-amide of oxamic acid. The trioxane may be copolymerized with cyclic ethers, or with olefinic type comonomers of which hexene-1, butene-1, styrene, acrylonitrile, butyl acrylate, methyl methacrylate, methacrolein, vinyl acetate, methyl vinyl ketone, and acrylic acid are used in examples while very long lists of alternatives are given. The copolymers preferably contain at least 90% trioxane. The polymers may be end capped e.g. with acetic anhydride and dialkyl acetals. |
| priorityDate | 1962-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.