http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1068807-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1344c5c0f7a3b561aa76dfefb893f85f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-03 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-03 |
| filingDate | 1964-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1967-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1068807-A |
| titleOfInvention | Stabilizing compositions for poly-ª‡-olefin |
| abstract | The stabilizing of poly-a -olefines is facilitated by the presence of 1 to 30 weight per cent of a chlorinated biphenyl and/or triphenyl containing 20 to 70 weight per cent of chlorine. The invention provides readily stabilizable intermediates of polyolefines and the chlorinated polyphenyls, and compositions for coating polyolefines comprising solutions of the chlorinated polyphenyls and stabilizers. The polyolefines may be mixed or otherwise contacted with the chlorinated polyphenyl or chlorinated polyphenyl/stabilizer solution and heated at 150 DEG to 300 DEG F. for 1/2 to 8 hours to effect uniform absorption of the polyphenyl in the polyolefine. Specified stabilizers are polyolefine compatible ultra-violet light absorbers, antioxidants and heat stabilizers, which may be used with synergistic costabilizers. The invention is useful in the preparation of stabilized shaped articles such as films and filaments. Specified polyolefines are polymers and copolymers of ethylene, propylene and butylene, and mixtures thereof. Many suitable stabilizers are listed, and in Examples (2, 3, 5, 6 and 9-13) polypropylene pellets are heated with chlorinated polyphenyl solutions of p-octylphenyl salicylate, 2,6 - di - t - butyl - p - cresol and dilauryl thiodipropionate; (4) polypropylene pellets are heated with chlorinated biphenyl; (14) a polypropylene mesh fabric is coated with a xylene solution of chlorinated biphenyl, p-octylphenyl salicylate, 2,6 - di - t - butyl - p - cresol and dilauryl thiodipropionate; polypropylene flakes are heated with chlorinated biphenyl solutions of a dialkyl phenol sulphide, 2,6-di-t-butyl-p-cresol and (15) p-octylphenyl salicylate or (16) a substituted acrylonitrile ultra-violet light absorber; and (8) and ethylene/propylene stereoblock copolymer is treated as in (2).ALSO:Fabrics made of polyolefins may be stabilised by applying thereto solutions of conventional thermal stabilisers, antioxidants and ultra violet light absorbers in chlorinated biphenyl and/or triphenyl containing 20 to 70 weight per cent of chlorine, and heating, e.g. at 150 to 300 DEG F. For 1/2 to 8 hours, to effect uniform absorption of the chlorinated polyphenyl into the polyolefin. The polyolefin may be polyethylene, polypropylene or polybutylene. Many suitable stabilisers and stabiliser combinations are listed, and in Example 14 a polypropylene mesh fabric, pre-warmed to below 250 DEG F is immersed in a solution of p-octylphenyl salicylate, 2, 6-di-t. butyl-p-cresol and dilauryl thiodipropionate in a chlorinated biphenyl containing 60 weight per cent of chlorine, diluted with xylene to facilitate application, and the treated fabric removed and baked at 250 DEG F for 5 minutes, and the immersion and baking are then repeated. |
| priorityDate | 1963-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.