http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-683164-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b30d807376962224a66aa244d678104a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-34 |
| filingDate | 1950-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1952-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-683164-A |
| titleOfInvention | Improvements in or relating to processes for preparing sulphonated polystyrenes |
| abstract | Polystyrene, in an inert organic solvent, e.g. ethylene dichloride, trichlorethane, carbon tetrachloride, and chloroform, is sulphonated by a co-ordination complex of sulphur-trioxide and an organic compound, which releases sulphur trioxide at temperatures below 50 DEG C. Complexes of bis-(b -chlorethyl) ether or dioxane in the ratio of 1.5 to 3 mols. and 0.5 to 2 mols., to 1 mol. of sulphur trioxide, respectively, may be used at temperature ranges of -15 DEG to +5 DEG and +10 DEG C. respectively. The products may be reacted with a formaldehyde condensation product of urea, thiourea, dicyandiamide, aminotriazines such as melamines, ammeline, and 2,4,6-triphenyl-triamino-1,3,5-triazine, and linear superpolyamides of the nylon type, or their ethers prepared by reacting the methylols with, e.g. methanol, ethanol, isopropanol, butanol, 2-ethyl hexanol, lauryl, stearyl, benzyl, phenyl, ethyl and phenyl butyl alcohols. The reaction products may be cured to the insoluble and infusible state at 75-150 DEG C. The sulphonated products may be used as the free acids or as salts of lithium, sodium, potassium, rubidium or caesium, in aqueous or organic solution, as sizing agents, protective colloids, adhesives, dispersing, thickening or tanning agents, textile and paper impregnants, in printing pastes, or cast films. They may also be modified with other resins, plasticizers, dyes, pigments, and lubricants. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-1175524-B |
| priorityDate | 1949-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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