http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-981515-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_80515cddcb8250475dd025c8e3acba49 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2666-54 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K7-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E04D5-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06M7-005 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B26-045 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L23-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06N3-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06N3-045 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09J123-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B27-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E04D5-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09J123-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B26-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K7-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B27-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L23-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06N3-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06N3-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06N7-00 |
| filingDate | 1963-03-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1965-01-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-981515-A |
| titleOfInvention | Roofing material |
| abstract | Roofing material comprises water-laid asbestos fibre felt containing a water-insoluble binder, integrally bonded to a covering layer of a polyisobutylene composition without use of a separate adhesive, the polyisobutylene used having a molecular weight between 80,000 and 300,000. The polyisobutylene composition preferably has the following general formula in parts by weight: high molecular weight polyisobutylene 100; polythene polypropylene or mixtures thereof 5-15; lubricant 0.2-4; ultra-violet light screening and reinforcing agent 5-75; inert filler 295-400; examples being given in which the auxiliary agents are respectively stearic acid, carbon black and slate dust with either diatomaceous silica or ground washed oyster shells, together with a small quantity of phenyl-b -naphthylamine as antioxidant, these being prepared in a Banbury mixer and the resultant stock delivered as a slab. If white polyisobutylene stock is required finely ground titanium dioxide is used as ultra-violet screening and reinforcing agent in place of carbon black whilst the slate dust filler may be replaced by wet ground calcite, or by mica, talc, whiting, silica, perlite fines, asbestos shorts, wood flour, or similar material. Alternative lubricants are aluminium stearate or paraffin wax.ALSO:An asbestos felt suitable for laminating to a polyisobutylene layer to make roofing material (see Division B5) is water-laid and contains a water-insoluble binder of natural or synthetic rubber latex, preferably a latex of vinyl-toluene-butadiene; styrene-butadiene, or acrylonitrile with ABS terpolymer in the range 2%-25% by weight of the felt. The asbestos fibre is mixed with titanium dioxide in a pulping unit together with a stabilizer to prevent coagulation; the latex emulsion being added to the fibre slurry immediately before it is delivered to the paper machine, and a coagulant (e.g. an acid or acid salt such as alum, phosphoric acid, or magnesium chloride) is applied as a shower over a thin layer of the laid asbestos felt. A suitable latex binder composition is given; whilst the felt compositions may have such additives as diatomaceous silica, dispersing agents, antioxidants and antifoam agents, suitable formulations being given. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022136859-A1 |
| priorityDate | 1962-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.