http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-377291-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4bac01f8ccd80964072f9b9fbb35c50e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B24D7-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B24D18-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B24D7-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B24D18-00 |
| filingDate | 1931-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1932-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-377291-A |
| titleOfInvention | An improved abrasive article and method of manufacturing such article |
| abstract | Abrasive material is bonded or attached to a backing by a composition which includes an isomer of rubber less unsaturated than normal rubber. The isomer may be produced by heating rubber with organic sulphonic chlorides or acids, sulphuric acid, or with substances which yield sulphonic acid when heated, the degree of saturation depending on the amount of the reagent added, and the temperature. 7 1/2 parts of p-phenolsulphonic acid added to 100 parts of rubber and heated to 120-145 DEG for 4-10 hours yields a balata-like product about 67 per cent unsaturated compared with normal rubber, while 15 parts of p-phenol sulphonic acid heated with 100 parts of rubber to 140 DEG C. for 8 hours undergoes an exothermic reaction, the temperature rises to 250 DEG C., and a brittle shellac-like mass results, of about 25 per cent unsaturation. By controlling the degree of isomerization, by mixing different isomers, or by adding other materials such as natural or synthetic resins, rubber, abrasive articles of any degree of hardness and flexibility may be obtained. Numerous examples of compositions are given: the following are typical:-(a) 1000 parts of abrasive grain and 100 parts of powdered flint are mixed with 500 parts of a solution of 17 parts of rubber isomer, 5 parts of rubber, 6 parts of sulphur, and 72 parts of solvent, e.g. benzol. After forming a blank, the solvent p is removed and the article is compacted and vulcanized. (b) In applying abrasive to a backing, e.g. steel, the steel is sand-blasted and coated with a solution of 21,6 parts rubber isomer, 40 per cent unsaturation, 2,7 parts rubber, 0,9 parts of sulphur, and 74,8 parts of solvent, e.g. benzol. Abrasive is sifted on and most of the solvent is removed. A coat of thinned solution is applied over the abrasive, and after evaporation of the solvent, vulcanization is effected by heating to 320 DEG F. for 1 hour. Other examples are given in which phenolaldehydes are employed, and in which a material such as balsa wood, leather, rubber, is added for polishing wheels. Other backings mentioned are sheet rubber, woven fabrics, felt, paper. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6846223-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AU-2002216693-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0245908-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-100402238-C |
| priorityDate | 1930-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.