http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1273445-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-0502 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B2307-724 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B2260-021 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B2305-026 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B2260-046 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06N3-183 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29D35-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-183 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B3-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06N3-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06N3-121 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06N3-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L75-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D175-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06N3-0022 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29D35-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06N3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L75-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06N3-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D175-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06N3-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06N3-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-18 |
| filingDate | 1969-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f9bf5586fc2689f9befcd203c695b8dd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5e01789ecc1f15f6fa3f947715c3156d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bb31b79c515174f65f35ff3cd5a0c78a |
| publicationDate | 1972-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1273445-A |
| titleOfInvention | Synthetic microporous sheet material |
| abstract | 1,273,445. Leather substitutes. E.I. DU PONT DE NEMOURS & CO. 25 June, 1969, No. 32114/69. Heading B2E. [Also in Division C3] A water vapour permeable, coriaceous, synthetic microporous sheet material comprises a porous substrate comprising a layer of fibrous material impregnated with a synthetic polymer having adhered thereto a microporous synthetic polymer coating (A), and a non-porous vapour permeable finish (B) having a thickness of 0.1-5 mils in superimposed adherence with microporous coating (A) and comprising an elastomeric polymer containing (a) at least 40% by weight of soft polymeric segments derived from a polymer having a molecular weight of 500-1,000,000 selected from polyalkylene ether glycols having a glass transition temperature of -40C to -90C, polysiloxanes having a glass transition temperature of -60 to -150C, polyvinyl alkyl ethers having a glass transition temperature of -20 to -60C, polyalkyl acrylates having a glass transition temperature of -20 to -70C in which the alkyl group has 1-8 carbon atoms and hydrocarbon copolymers having a glass transition temperature of -30 to -80C in which the hydrocarbon units have 2-12 carbon atoms, and containing 10-50% by weight of oxygen, nitrogen or a mixture of oxygen and nitrogen, and (b) 0-60% by weight of hard polymeric segments derived from polyureas, polyurethanes, chain extended polyurethanes, polycarbonates, polyesters, polysiloxanes or vinyl addition polymers, e.g. of styrene or acrylonitrile, which have a glass transition temperature above 50C, a crystalline melting point above 100C or a softening temperature above 100C, the elastomeric polymer being characterized by a non-porous unsupported film formed thereof having a permeability constant for water vapour of at least 3000, a stress at 100% elongation of 50-4000 pounds per square inch, a permanent set of less than 20% and a tensile strength of at least 3000 pounds per square inch. The porous substrate may comprise a woven, non- woven or knitted fabric made from polyester, polyamide, polyesteramide, acrylic, viscose rayon, wool, cotton or glass fibres impregnated with a synthetic polymer. The polymer used to form microporous coating A may have a secant tensile modulus at 5% elongation of above 600 pounds per square inch during the entire processing cycle from the time the polymer is coagulated into a microporous structure until it is dried and may be a polyurethane prepared from a polyalkylene ether glycol or hydroxylterminated polyester and an organic diisocyanate, which may contain polyurea units and may be used in admixture with a vinyl chloride polymer. The coatings may be applied by spraying, rollers, dipping, swabbing, brushing, padding or printing. The elastomeric polymer coating (B) may also contain polyvinyl butyral, a silicone resin, a pigment, e.g. titanium dioxide, metal hydroxides, chromates, silicates, sulphides, sulphates, carbonates, carbon black, copper phthalo-cyanine, lakes and metal flake pigments, and antioxidants, e.g. 4, 4'-butylidene-bis (6-tertiarybutyl-m-cresol) and 2, 2'-methylene-bis-(4-methyl-6-tertiary-butylphenol). The sheet material may be further coated with an acrylic polymer which may be a terpolymer containing 1-6% by weight of an α, #-unsaturated monovinylidene carboxylic acid, e.g. acrylic or methacrylic acid, an acrylic acid ester and a methacrylic acid ester, the carboxyl groups of which may be reacted with an alkylene imine and which may contain a pigment, and with a final coating of cellulose acetate butyrate, and may be embossed. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5641822-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5494855-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5413655-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2015041862-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5696191-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5344862-A |
| priorityDate | 1966-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 79.