http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-793739-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6a8240e48f43839cef5ed0f365d376a9 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12N11-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J39-19 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J47-016 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B13-0214 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J47-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J39-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B13-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12N11-12 |
| filingDate | 1956-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1958-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-793739-A |
| titleOfInvention | Improved catalase composition and method of employing same |
| abstract | A catalase composition comprises a waterinsoluble complex having a catalase component and a cellulose component that contains chemically bonded anion exchange groups. The complex is characterized analytically by hydrolysing hydrogen peroxide to evolve oxygen gas. The cellulose component is preferably an a -cellulose material such as cotton, wood pulp, paper or cotton cloth and contains chemically bonded groups that will enter into an exchange reaction with anionic groups of other compounds. Examples of such anionic cellulose exchangers are dimethyl aminoethyl cellulose and diethylaminoethyl cellulose, and these may be prepared by respectively reacting sodium cellulose with a 2-dichlorodimethyl ethyl amine, e.g. 2 - (N,N - dimethyl) aminoethyl chloride hydrochloride, or with a 2-chloro triethylamine, e.g. 2-(N,N-diethyl) aminoethyl chloride hydrochloride. Any catalase concentrate may be used for forming the complex which may then be used to generate oxygen by reaction with a peroxide, or to generate oxygen and water by reaction with hydrogen peroxide. In such reactions the process may be carried out in a batch or columnar fashion and in the latter a semi-continuous process for the production of oxygen may be effected by passing a peroxide through the column and when the catalase activity is expended, eluting the spent catalase in a soluble form by means of solutions of sodium chloride or sodium phosphate and passing a fresh catalase concentrate through the column causing the catalase to be absorbed on the cellulose material. The concentration of peroxide substance in contact with the catalase complex should be such that the catalase activity is not impaired. If hydrogen peroxide is used, a suitable concentration is about 3 per cent by volume.ALSO:A process for the production of oxygen gas comprises the step of contacting a peroxide substance with a complex formed from catalase and a cellulose material containing chemically bound aminic exchange groups, e.g. dimethyl aminoethyl cellulose or diethyl amino ethyl cellulose. The process may be carried out in a batch manner or semi-continuously using a column technique. If the peroxide used is hydrogen peroxide, oxygen gas may be withdrawn from the top of the column and water from the bottom. When the catalase activity is expended the column may be recharged by eluting the spent catalase with sodium chloride solution or sodium phosphate solution and a fresh catalase concentrate run through the column causing the catalase to be absorbed on the cellulose material.ALSO:Dimethylaminoethyl cellulose and diethylaminoethyl cellulose are prepared by reacting the sodium salt of an a -cellulose material, e.g. cotton, wood pulp, paper or cotton cloth, with 2-chlorodimethylethyl amine or 2-chlorotriethyl amine respectively. The products may be used as anionic exchangers but according to the Specification, are used in the form of a complex with cabalase, which complex will react with a peroxide substance to generate oxygen. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106870212-A |
| priorityDate | 1955-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 182.