Copolyamide based on tetramethylene terephthalamide and hexamethylene terephthalamide
The invention relates to a semi-aromatic polyamide that contains tetramethylene terephthalamide units. The invention also relates to a process for preparing a polyamide that contains at least tetramethylene terephthalamide units and to compositions and products containing said polyamide. The inventi...
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| creator | Rulkens, Rudy Crombach, Robert C. B |
| description | The invention relates to a semi-aromatic polyamide that contains tetramethylene terephthalamide units. The invention also relates to a process for preparing a polyamide that contains at least tetramethylene terephthalamide units and to compositions and products containing said polyamide.
The invention relates to a semi-aromatic polyamide containing at least tetramethylene terephthalamide units and also hexamethylene terephthalamide units.The copolyamide has a melting point higher than approximately 290° C., a high crystallinity and a good stability.Preferably the copolyamide according to the invention contains approximately 30-75 mol % hexamethylene terephthalamide units and also approximately 0.01-20 mol % other units.The invention also relates to a process for the preparation of a semi-aromatic copolyamide containing at least tetramethylene terephthalamide units and hexamethylene terephthalamide units, characterized in that, successively, a first polymerization is effected in the melt phase, followed by an post-polymerization of the low molar mass polymer thus obtained in the solid phase; and to compositions and products that contain said copolyamide. |
| format | Patent |
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The invention relates to a semi-aromatic polyamide containing at least tetramethylene terephthalamide units and also hexamethylene terephthalamide units.The copolyamide has a melting point higher than approximately 290° C., a high crystallinity and a good stability.Preferably the copolyamide according to the invention contains approximately 30-75 mol % hexamethylene terephthalamide units and also approximately 0.01-20 mol % other units.The invention also relates to a process for the preparation of a semi-aromatic copolyamide containing at least tetramethylene terephthalamide units and hexamethylene terephthalamide units, characterized in that, successively, a first polymerization is effected in the melt phase, followed by an post-polymerization of the low molar mass polymer thus obtained in the solid phase; and to compositions and products that contain said copolyamide.</description><language>eng</language><creationdate>2004</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6747120$$EPDF$$P50$$Guspatents$$Hfree_for_read</linktopdf><link.rule.ids>230,308,780,802,885,64039</link.rule.ids><linktorsrc>$$Uhttps://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6747120$$EView_record_in_USPTO$$FView_record_in_$$GUSPTO$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Rulkens, Rudy</creatorcontrib><creatorcontrib>Crombach, Robert C. B</creatorcontrib><creatorcontrib>DSM IP Assets B.V</creatorcontrib><title>Copolyamide based on tetramethylene terephthalamide and hexamethylene terephthalamide</title><description>The invention relates to a semi-aromatic polyamide that contains tetramethylene terephthalamide units. The invention also relates to a process for preparing a polyamide that contains at least tetramethylene terephthalamide units and to compositions and products containing said polyamide.
The invention relates to a semi-aromatic polyamide containing at least tetramethylene terephthalamide units and also hexamethylene terephthalamide units.The copolyamide has a melting point higher than approximately 290° C., a high crystallinity and a good stability.Preferably the copolyamide according to the invention contains approximately 30-75 mol % hexamethylene terephthalamide units and also approximately 0.01-20 mol % other units.The invention also relates to a process for the preparation of a semi-aromatic copolyamide containing at least tetramethylene terephthalamide units and hexamethylene terephthalamide units, characterized in that, successively, a first polymerization is effected in the melt phase, followed by an post-polymerization of the low molar mass polymer thus obtained in the solid phase; and to compositions and products that contain said copolyamide.</description><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2004</creationdate><recordtype>patent</recordtype><sourceid>EFH</sourceid><recordid>eNrjZAh1zi_Iz6lMzM1MSVVISixOTVHIz1MoSS0pSsxNLcmozEnNSwVyi1ILMkoyEnMg6hLzUhQyUitwq-BhYE1LzClO5YXS3AwKbq4hzh66pcUFiSWpeSXF8elFiSDKwMzcxNzQyMCYCCUAJmk7Qw</recordid><startdate>20040608</startdate><enddate>20040608</enddate><creator>Rulkens, Rudy</creator><creator>Crombach, Robert C. B</creator><scope>EFH</scope></search><sort><creationdate>20040608</creationdate><title>Copolyamide based on tetramethylene terephthalamide and hexamethylene terephthalamide</title><author>Rulkens, Rudy ; Crombach, Robert C. B</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-uspatents_grants_067471203</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2004</creationdate><toplevel>online_resources</toplevel><creatorcontrib>Rulkens, Rudy</creatorcontrib><creatorcontrib>Crombach, Robert C. B</creatorcontrib><creatorcontrib>DSM IP Assets B.V</creatorcontrib><collection>USPTO Issued Patents</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Rulkens, Rudy</au><au>Crombach, Robert C. B</au><aucorp>DSM IP Assets B.V</aucorp><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Copolyamide based on tetramethylene terephthalamide and hexamethylene terephthalamide</title><date>2004-06-08</date><risdate>2004</risdate><abstract>The invention relates to a semi-aromatic polyamide that contains tetramethylene terephthalamide units. The invention also relates to a process for preparing a polyamide that contains at least tetramethylene terephthalamide units and to compositions and products containing said polyamide.
The invention relates to a semi-aromatic polyamide containing at least tetramethylene terephthalamide units and also hexamethylene terephthalamide units.The copolyamide has a melting point higher than approximately 290° C., a high crystallinity and a good stability.Preferably the copolyamide according to the invention contains approximately 30-75 mol % hexamethylene terephthalamide units and also approximately 0.01-20 mol % other units.The invention also relates to a process for the preparation of a semi-aromatic copolyamide containing at least tetramethylene terephthalamide units and hexamethylene terephthalamide units, characterized in that, successively, a first polymerization is effected in the melt phase, followed by an post-polymerization of the low molar mass polymer thus obtained in the solid phase; and to compositions and products that contain said copolyamide.</abstract><oa>free_for_read</oa></addata></record> |
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| title | Copolyamide based on tetramethylene terephthalamide and hexamethylene terephthalamide |
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