PRODUCTION OF EXPANDED ETHYLENE POLYMERS
Production of flexible expanded moldings from olefin polymers by heating a mixture comprising an olefin polymer, a peroxide and a solid expanding agent in a mold, which is gastight when closed and is filled with a volume of said mixture equal to from 95% to 100% of its capacity, to a temperature abo...
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| creator | IKERT B,DT GAETH R,DT STASTNY F,DT |
| description | Production of flexible expanded moldings from olefin polymers by heating a mixture comprising an olefin polymer, a peroxide and a solid expanding agent in a mold, which is gastight when closed and is filled with a volume of said mixture equal to from 95% to 100% of its capacity, to a temperature above the softening point of the olefin polymer and above the decomposition temperature of the peroxide and of the expanding agent, starting to release the pressure in the mold to atmospheric pressure, immediately increasing the volume of the mold to from 3 to 35 times the volume of the expansible melt within from 0.1 to 20 seconds and then cooling the expanded molding. The moldings are used as thermal and sound insulating materials and as upholstery padding. |
| format | Patent |
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The moldings are used as thermal and sound insulating materials and as upholstery padding.</description><language>eng</language><subject>AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G ; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; GENERAL PROCESSES OF COMPOUNDING ; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC ; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; PERFORMING OPERATIONS ; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR ; SHAPING OR JOINING OF PLASTICS ; TECHNICAL SUBJECTS COVERED BY FORMER USPC ; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; TRANSPORTING ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL ; WORKING-UP</subject><creationdate>1974</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19740618&DB=EPODOC&CC=US&NR=3818086A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25562,76317</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19740618&DB=EPODOC&CC=US&NR=3818086A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>IKERT B,DT</creatorcontrib><creatorcontrib>GAETH R,DT</creatorcontrib><creatorcontrib>STASTNY F,DT</creatorcontrib><title>PRODUCTION OF EXPANDED ETHYLENE POLYMERS</title><description>Production of flexible expanded moldings from olefin polymers by heating a mixture comprising an olefin polymer, a peroxide and a solid expanding agent in a mold, which is gastight when closed and is filled with a volume of said mixture equal to from 95% to 100% of its capacity, to a temperature above the softening point of the olefin polymer and above the decomposition temperature of the peroxide and of the expanding agent, starting to release the pressure in the mold to atmospheric pressure, immediately increasing the volume of the mold to from 3 to 35 times the volume of the expansible melt within from 0.1 to 20 seconds and then cooling the expanded molding. 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| subjects | AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP |
| title | PRODUCTION OF EXPANDED ETHYLENE POLYMERS |
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