http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-945717-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4eacb0405869fef7a8f1c516085f2682 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-24 |
| filingDate | 1959-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ca0123324ddc1c4100e50462b4e3a9ee |
| publicationDate | 1964-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-945717-A |
| titleOfInvention | Process for the production of polymeric materials |
| abstract | Cross-linked polymeric material is produced by subjecting a high polymer or mixture of high polymers to shearing forces, which are sufficient to rupture the polymer(s) with the formation of polymeric ions or free radicals, in the presence of a cross-linking agent having a functionality of at least 3, and at a temperature below the decomposition temperature of the polymer(s). Cross-linking agents specified are: (A) compounds of the general formula MXn where M is an atom of valency 3 or more, X is an organic or inorganic radical and n is an integer equal to or greater than 3, e.g. the halides, isopropoxides and sec.-butoxides of aluminium, iron, tin, boron, chromium, manganese, silicon, titanium or tungsten; (B) substituted aromatic compounds and organic resinous materials, including intermediates from which resinous materials can be prepared, which contain per molecule at least 3 of the groups: hydroxy, carboxyl, methylol, hydrogen sulphate, primary and secondary amine, methylolamine sulphonamide, alkoxy, halogen, or an alkali metal salt or derivative of said groups; and (C) compounds having the formula R1-CH=CH-R11, wherein R1 and R1 1 are aromatic or substituted aromatic nuclear or polynuclear hydrocarbon radicals. Polymers which may be cross-linked are polymers of acrylic and methacrylic acids, nitriles, and esters, ethylene, propylene, styrene, alpha-methyl styrene, bromostyrene, vinyl naphthalenes, isobutylene, diisobutylene, butadiene, isoprene, vinyl chloride and fluoride, vinyl acetate, vinyl pyridine, N-vinyl pyrrolidone, tetrafluoroethylene, trifluorochloroethylene; also natural rubber, guttapercha, polyvinyl alcohol, formal, acetal and butyral, polyepoxides, polyethylene glycols, polyesters, polyamides, polyurethanes, condensation products of formaldehyde with phenol, urea and melamine, casein, copal, shellac, glue, starch, alginates, chlorinated rubber, cyclised rubber, cellulose acetate and triacetate, ethyl and benzyl celluloses, polyethers and polycarbonates. The examples describe the cross-linking of polymethyl methacrylate with aluminium isopropoxide, polystyrene with aluminium chloride, polyvinyl acetate with alumina and pale crepe rubber with aluminium sec.-butoxide aluminium isopropoxide, ferric, stannic and aluminium chlorides, resins made from formaldehyde and phenol, o-, m- and pcresols, p-tert.-octylphenol xylenol and melamine, dimethylol resorcinol, an epoxy resin, a maleic anhydride-glycerol resin, shellac, copal, rosin pitch stilbene and acenaphthalene. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0952181-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6207776-B1 |
| priorityDate | 1959-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 110.