http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1058800-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_926514a4805716ff3f04fdc6f91ab292 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06M2200-45 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06M2101-12 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06M15-564 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M15-564 |
| filingDate | 1964-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1967-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1058800-A |
| titleOfInvention | Process for stabilizing natural keratin fibers |
| abstract | Keratin fibres, e.g. sheep's wool, rabbit fibre, angora, vicuna wool, llama wool, alpaca wool, camel's hair and cashmere fibres alone or in admixture with nylon or polyester fibres, are shrinkproofed by impregnating them either in fibrous or fabric form, with a curable urethane prepolymer having blocked or unblocked isocyanate terminal groups and then heating them to a temperature sufficient to cure the prepolymer. The prepolymers, which may have molecular weights of 200-4,000, may be prepared by the reaction of a polyisocyanate with a polyhydroxy compound having more than one hydroxyl group and having a polyester, polyether, polythioester and/or polythioether backbone, preferred prepolymers being those prepared by the reaction of toluene diisocyanate, diphenylmethane diisocyanate, 1,5-naphthalene diisocyanate or hexamethylene diisocyanate with an ester derived from castor oil or by the reaction of ethylene glycol, propylene glycol and adipic acid or with a polyalkylene glycol. The terminal isocyanate groups may be wholly or partially blocked by reaction with methyl ethyl ketoxime, cyclohexanone oxime, butyraldoxime, acetophenone oxime, dimethyl ketoxime, ethylene imine, propylene imine, 2-methyl ethylene imine, methanol, ethanol, propanol, diethylamine, morpholine or dibutylamine. The prepolymer may be applied to the keratin fibres as a solution in toluene, xylene, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, methylene chloride, trichloroethylene, perchloroethylene, acetone, methyl isobutyl ketone, methylethyl ketone, dimethyl formamide or dimethyl sulphoxide, by spraying, brushing, roller coating or dipping and the solvent may then be removed and the prepolymer cured by heating to 180 DEG -300 DEG F. The treating solution may also contain a curing agent which supplies active hydrogen atoms in the form of OH, NH2 or SH groups, e.g. N, N, N' N'-tetrakis (2-hydroxypropyl) ethylene diamine, triisopropanolamine, trimethylolpropane and triethanolamine a catalyst, e.g. calcium octoate, cobalt octoate, iron octoate, manganese octoate, stannous octoate, zinc octoate, lead octoate, lead acetyl acetonate, triethylene diamine, lead-2-ethylhexoate, lead benzoate or lead oleate, a pigment, e.g. titanium dioxide, carbon black, iron oxide or silica, a softener, e.g. a fatty acid ester of sorbitol or a quarternary ammonium salt containing at least one alkyl chain having more than 16 carbon atoms. Alternatively the softener may be applied after the prepolymer has been cured. Pile fabrics comprising 20% by weight of mohair and 80% by weight of sheep's wool may be treated. |
| priorityDate | 1963-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 128.