http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1097802-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af99df08b153738cd418446a75d09bfc |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F28-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C309-00 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-17 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F28-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-22 |
| filingDate | 1966-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b98fb48dea649a98d35093a7c59d02b2 |
| publicationDate | 1968-01-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1097802-A |
| titleOfInvention | Preparation of sulfo esters of ª‡-methylene carboxylic acids |
| abstract | Sulpho esters of a -methylene carboxylic acids are prepared by direct esterification of an hydroxy aliphatic sulphonic acid with an a -methylene carboxylic acid using sufficient of the a -methylene carboxylic acid to esterify the hydroxy sulphonic acid, followed by azeotropic removal of the water formed or present. From 3 to 10 mole proportions of the a -methylene carboxylic acid per mole of hydroxy sulphonic acid are advantageously employed. Suitable a -methylene carboxylic acids include those of the formula CH2=C(R)-CO2H, where R is hydrogen, halogen or an organic radical such as alkyl, and suitable hydroxy aliphatic sulphonic acids include those of the formula HO-Q-SO3H, where Q represents a bivalent organic radical in which the -OH radical is attached to an aliphatic carbon atom. The reaction is advantageously carried out at subatmospheric pressure, preferably in the range from 20 to 200 mm. of Hg and at a temperature between 50 DEG and 175 DEG C. A polymerization inhibitor is usually added. The monomeric sulpho esters of mixtures thereof may be homopolymerized or copolymerized. The polymerization is accelerated by heat, by activation with ionizing radiations and by catalysis with free-radical producing materials such as a ,a 1-azobisisobutyronitrile and peroxygen compounds. The polymers are used as soil conditioners, stabilizers for aqueous colloidal dispersions and emulsions, surfaceactive agents, antistatic finishes for textiles and plastics, adhesives, sizes for textiles and paper, and dye assistants. The monomers have similar uses and are polymerizable in such compositions. |
| priorityDate | 1963-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.