Showing papers on "Plastomer published in 1972"

Asphaltic-plastomeric composition

Abstract: A BLEND OF ASPHALTIC MATERIAL AND PLASTOMERIC MATERIAL, WITH OR WITHOUT POLYETHYLENE, IN WHICH THE PLASTOMERIC MATERIAL IS IN THE FORM OF AN EPM OR EPDM PLASTOMER IN WHICH ETHYLENE REPRESENTS 75-90 MOL PERCENT OF THE ETHYLENE-PROPYLENE CONTENT.

Method for producing a hollow plastic object

Abstract: 1. A METHOD FOR FORMING A HARD-FOAM PLASTIC BODY HAVING A HOLLOW SPACE THEREIN COMPRISING: SUPPORTING A CASTING CORE IN A MOLD CAVITY, SAID CORE BEING SMALLER THAN SAID CAVITY AND BEING CONSTRUCTED OF A FOAMED, THERMOPLASTIC PLASTOMER HAVING A CLOSED CELL STRUCTURE, SAID CLOSED CELL STRUCTURE BEING COLLAPSIBLE IN RESPONSE TO MELTING OF THE PLASTOMER; INTRODUCING A HARD-FOAM REACTION MIXTURE INTO SAID CAVITY AROUND THE CORE, SAID MIXTURE BEING CAPABLE OF AUTOGENOUSLY PRODUCING A REACTION TEMPERATURE SUFFICIENTLY HIGH TO MELT SAID CORE; AND MAINTAINING THE MIXTTURE WITHIN THE CAVITY UNTIL IT IREACTS AND HARDENS AND ACHIEVES SAID REACTION TEMPERATURE WHEREBY TO MELT AND COLLAPSE THE CELLS OF THE CORE AND CAUSE THE PLASTOMER MATERIAL THEREOF TO PRECIPITATE ALONG THE WALLS OF THE RESULTANT HOLLOW SPACE.

Composite polyolefin elastomeric tubes - for insulating heavy current

Abstract: A pressure resistant, insulating tube, particularly for sealing the ends of heavy duty cables is pref. reinforced with fabric and formed from an elastic, oil, water, light, ozone and age resistant material such as an elastomer and/or a plastomer, the tube being surrounded by a sheath of cross-linked polyolefine shrunk on to it. The use of an outer layer of cross-linked polyolefine provides a cable insulation with high resistance to mechanical stress and stray currents. The external sheath is pref. irradiation cross-linked polyethylene.