Screw designs having improved performance with low melting PET resins
Disclosed is a process for a melt processing a polyethylene terephthalate resin characterized by one or more of the following. The polyester particles may have at least two melting peaks wherein one of the at least two melting peaks is a low peak melting point with a range from 140° C. to 220° C., o...
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| creator | STEWART MARK EDWARD STAFFORD STEVEN LEE WEINHOLD STEPHEN DONELSON MICHAEL EUGENE SHELBY MARCUS DAVID COLHOUN FREDERICK LESLIE ESTEP ROBERT NOAH BOOCHARD EDWARD LEWIS |
| description | Disclosed is a process for a melt processing a polyethylene terephthalate resin characterized by one or more of the following. The polyester particles may have at least two melting peaks wherein one of the at least two melting peaks is a low peak melting point with a range from 140° C. to 220° C., or from 140° C. to 230° C., and having a melting endothermic area of at least the absolute value of 1 J/g. The polyester particles may have one or more melting peaks at least one of which when measured on a DSC first heating scan has a heating curve departing from a baseline in the endothermic direction at a temperature of less than or equal to 200° C. The polyester particles may have an It.V. at their surface which is less than 0.25 dL/g higher than the It.V. at their center. The polyester particles may have not been solid stated. The melt processing device comprises a screw with a total length, L, a feed zone length in the range from 0.16L and 0.45L, a taper angle, , in the range from 0.5 degrees and 5.0 degrees and a compression ratio, CR, in the range from 2.0 and 5.0. |
| format | Patent |
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The polyester particles may have at least two melting peaks wherein one of the at least two melting peaks is a low peak melting point with a range from 140° C. to 220° C., or from 140° C. to 230° C., and having a melting endothermic area of at least the absolute value of 1 J/g. The polyester particles may have one or more melting peaks at least one of which when measured on a DSC first heating scan has a heating curve departing from a baseline in the endothermic direction at a temperature of less than or equal to 200° C. The polyester particles may have an It.V. at their surface which is less than 0.25 dL/g higher than the It.V. at their center. The polyester particles may have not been solid stated. The melt processing device comprises a screw with a total length, L, a feed zone length in the range from 0.16L and 0.45L, a taper angle, , in the range from 0.5 degrees and 5.0 degrees and a compression ratio, CR, in the range from 2.0 and 5.0.</description><language>eng</language><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; PERFORMING OPERATIONS ; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR ; SHAPING OR JOINING OF PLASTICS ; TRANSPORTING ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><creationdate>2011</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=20111115&DB=EPODOC&CC=US&NR=8057726B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20111115&DB=EPODOC&CC=US&NR=8057726B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>STEWART MARK EDWARD</creatorcontrib><creatorcontrib>STAFFORD STEVEN LEE</creatorcontrib><creatorcontrib>WEINHOLD STEPHEN</creatorcontrib><creatorcontrib>DONELSON MICHAEL EUGENE</creatorcontrib><creatorcontrib>SHELBY MARCUS DAVID</creatorcontrib><creatorcontrib>COLHOUN FREDERICK LESLIE</creatorcontrib><creatorcontrib>ESTEP ROBERT NOAH</creatorcontrib><creatorcontrib>BOOCHARD EDWARD LEWIS</creatorcontrib><title>Screw designs having improved performance with low melting PET resins</title><description>Disclosed is a process for a melt processing a polyethylene terephthalate resin characterized by one or more of the following. The polyester particles may have at least two melting peaks wherein one of the at least two melting peaks is a low peak melting point with a range from 140° C. to 220° C., or from 140° C. to 230° C., and having a melting endothermic area of at least the absolute value of 1 J/g. The polyester particles may have one or more melting peaks at least one of which when measured on a DSC first heating scan has a heating curve departing from a baseline in the endothermic direction at a temperature of less than or equal to 200° C. The polyester particles may have an It.V. at their surface which is less than 0.25 dL/g higher than the It.V. at their center. The polyester particles may have not been solid stated. The melt processing device comprises a screw with a total length, L, a feed zone length in the range from 0.16L and 0.45L, a taper angle, , in the range from 0.5 degrees and 5.0 degrees and a compression ratio, CR, in the range from 2.0 and 5.0.</description><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</subject><subject>PERFORMING OPERATIONS</subject><subject>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</subject><subject>SHAPING OR JOINING OF PLASTICS</subject><subject>TRANSPORTING</subject><subject>WORKING OF PLASTICS</subject><subject>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2011</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHANTi5KLVdISS3OTM8rVshILMvMS1fIzC0oyi9LTVEoSC1Kyy_KTcxLTlUozyzJUMjJL1fITc0pAakKcA1RKAJqzCvmYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxocEWBqbm5kZmTkbGRCgBAJ8KMwU</recordid><startdate>20111115</startdate><enddate>20111115</enddate><creator>STEWART MARK EDWARD</creator><creator>STAFFORD STEVEN LEE</creator><creator>WEINHOLD STEPHEN</creator><creator>DONELSON MICHAEL EUGENE</creator><creator>SHELBY MARCUS DAVID</creator><creator>COLHOUN FREDERICK LESLIE</creator><creator>ESTEP ROBERT NOAH</creator><creator>BOOCHARD EDWARD LEWIS</creator><scope>EVB</scope></search><sort><creationdate>20111115</creationdate><title>Screw designs having improved performance with low melting PET resins</title><author>STEWART MARK EDWARD ; STAFFORD STEVEN LEE ; WEINHOLD STEPHEN ; DONELSON MICHAEL EUGENE ; SHELBY MARCUS DAVID ; COLHOUN FREDERICK LESLIE ; ESTEP ROBERT NOAH ; BOOCHARD EDWARD LEWIS</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US8057726B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2011</creationdate><topic>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</topic><topic>PERFORMING OPERATIONS</topic><topic>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</topic><topic>SHAPING OR JOINING OF PLASTICS</topic><topic>TRANSPORTING</topic><topic>WORKING OF PLASTICS</topic><topic>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</topic><toplevel>online_resources</toplevel><creatorcontrib>STEWART MARK EDWARD</creatorcontrib><creatorcontrib>STAFFORD STEVEN LEE</creatorcontrib><creatorcontrib>WEINHOLD STEPHEN</creatorcontrib><creatorcontrib>DONELSON MICHAEL EUGENE</creatorcontrib><creatorcontrib>SHELBY MARCUS DAVID</creatorcontrib><creatorcontrib>COLHOUN FREDERICK LESLIE</creatorcontrib><creatorcontrib>ESTEP ROBERT NOAH</creatorcontrib><creatorcontrib>BOOCHARD EDWARD LEWIS</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>STEWART MARK EDWARD</au><au>STAFFORD STEVEN LEE</au><au>WEINHOLD STEPHEN</au><au>DONELSON MICHAEL EUGENE</au><au>SHELBY MARCUS DAVID</au><au>COLHOUN FREDERICK LESLIE</au><au>ESTEP ROBERT NOAH</au><au>BOOCHARD EDWARD LEWIS</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Screw designs having improved performance with low melting PET resins</title><date>2011-11-15</date><risdate>2011</risdate><abstract>Disclosed is a process for a melt processing a polyethylene terephthalate resin characterized by one or more of the following. The polyester particles may have at least two melting peaks wherein one of the at least two melting peaks is a low peak melting point with a range from 140° C. to 220° C., or from 140° C. to 230° C., and having a melting endothermic area of at least the absolute value of 1 J/g. The polyester particles may have one or more melting peaks at least one of which when measured on a DSC first heating scan has a heating curve departing from a baseline in the endothermic direction at a temperature of less than or equal to 200° C. The polyester particles may have an It.V. at their surface which is less than 0.25 dL/g higher than the It.V. at their center. The polyester particles may have not been solid stated. The melt processing device comprises a screw with a total length, L, a feed zone length in the range from 0.16L and 0.45L, a taper angle, , in the range from 0.5 degrees and 5.0 degrees and a compression ratio, CR, in the range from 2.0 and 5.0.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | Screw designs having improved performance with low melting PET resins |
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