[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-324204-105":3,"detail-sidebar-cat-0-en-105":80,"doc-detail-324204-en":130},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":73,"head_meta":75,"extra_data":77,"updated_unix":79},105,"en","a-method-for-producing-linear-polyesters-patent-bureau-of-japan-official-gazette","A Method for Producing Linear Polyesters - Patent Bureau of Japan Official Gazette","","Patent publication content describing a method for producing linear polyesters dyeable with acid dyes. The approach is characterized by mixing and melting a polyester containing tertiary nitrogen obtained from a dicarboxylic acid or its lower alkyl ester, together with a tertiary nitrogen-containing diol defined by generic formulas. The disclosure explains why common approaches using tertiary amine-bearing compounds fail due to low heat resistance and thermal decomposition, leading to incomplete introduction of basic groups and coloration issues, and motivates use of heat-stable tertiary nitrogen diols.",{"@graph":14,"@context":72},[15,34,55],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/research-report/","Research & 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core method described for producing dyeable linear polyesters?","Question",{"text":62,"@type":63},"The method involves mixing and melting a polyester containing tertiary nitrogen with a tertiary nitrogen-containing diol defined by generic formulas, in polyethylene terephthalate or a linear polyester mainly of ethylene terephthalate units.","Answer",{"name":65,"@type":60,"acceptedAnswer":66},"Why are earlier methods for introducing basic polar groups considered insufficient?",{"text":67,"@type":63},"Earlier approaches using compounds with tertiary amino groups are described as having low heat resistance, tending to decompose during polymerization, melting and mixing, or melt molding, which leads to coloration but incomplete achievement of the intended basic-group introduction.",{"name":69,"@type":60,"acceptedAnswer":70},"What advantage does the invention claim for the selected diol?",{"text":71,"@type":63},"The invention focuses on using a diol containing tertiary nitrogen that excels in thermal stability to improve production outcomes for acid-dyeable linear polyesters.","https://schema.org",{"og:url":32,"og:type":74,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":76,"canonical":32},"index,follow",{"doc_id":78,"site_id":7},324204,1790724595,{"code":4,"msg":81,"data":82},"success",[83,87,91,95,100,105,110,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":84,"show_sort_weight":85,"slug":86},"Story & 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method for producing linear polyesters.20 p.\n\nPatent(Japanese)No.51-1554(1976)。Filed:TRANSLATION NO.4611  \n# T R A N S L A T I ON\n\n   \n# PATENT BUREAU OF JAPANOFFICIAL GAZETTE FOR UNEXAMINED PATENTS\n\nJapanese Patent Application Publication Kokai:  51-1554  \nPublication Date:  January 8,1976  \nNumber of Inventions:  1  \nRequest for Examination:  (Not yet requested).  (Total of 8 pages)  \nIntrabureau No.International Class  \n   \n   \nC08L 67/02  \n736548  \n720248  \nD0lF 6/92  \nC08G 63/18  \n745545  \n# A METHOD FOR PRODUCING LINEAR POLYESTERS\n\nApplication No.:  49-28803  \nApplication Date:  March 12,1974  \nInventors:Masakazu Tanaka  \n1300-1 Honkatata-cho,Otsu-shi,Shiga-kenYoshikazu Arimatsu  \n1300-1 Honkatata-cho,Otsu-shi,Shiga-kenAkitada Osako1300-1 Honkatata-cho,Otsu-shi,Shiga-ken  \nApplicant:Toyo Spinning Co.,Ltd.2-8 Dojimahama Dori,Kita-ku,Osaka  \n## SPECIFICATION\n\n   \n## 1.  Title of Invention\n\n   \nA Method for Producing Linear Polyesters  \nDigitized by the Internet Archivein 2016  \nhttps://archive.org/details/methodforproduci00tana  \n## 2.Claim\n\n   \nA method for producing linear polyesters characterizedby mixing and melting a polyester containing tertiary nitro-gen obtained from dicarboxylic acid or a lower alkyl esterthereof and a tertiary nitrogen-containing diol shown by  \ngeneric formula(I)or(II)below in polyethylene terephthalateor a linear polyester comprised mainly of ethylene terephthalateunits  \n(1)  \n(1)  \n(where R₁represents an alkyl group that may or may not havebranches of 1-8 carbons,a cycloalkyl group,an aryl group,oran aralkyl group,and R₂and R₃represent a hydrogen atom orlower alkyl group with 1-4 carbon atoms)  \n## 3.  Detailed Description of the Invention\n\n   \nThe present invention relates to a method for producinglinear polyesters that are dyeable with acid dyes.  Morespecifically,this invention relates to a new method forproducing linear polyesters that are dyeable with acid dyesby using a diol containing tertiary nitrogen that excels inthermal stability.  \n—2—  \nSince polyethylene terephthalate and linear polyesterscomprised mainly of ethylene terephthalate units have excellentphysical and chemical properties,they are widely usedin many ways as moldings such as fibers,films,and boards.However,such molded products are usually troublesome to dye,and in particular cannot be dyes at all by acid dyes.  Inorder to make such linear polyesters dyeable with acid dyes,basic polar groups that should become dyeing seats for the dye,for example,tertiary amine groups,must be introduced intothe polyester in a stable form by some method or other.  Thefollowing methods for introducing such basic polar groupsinto polyesters are known.  \n(1)Copolymerizing the linear polyester with a compoundthat has basic groups in part of its dicarboxylic acid ordiol components.  \n(2)Blending a polymer that contains basic groups inthe polyester.  \nAs an example of the former method,the production ofa polyester copolymerized using N-tert-butyldiethanolamineas all or part of the diol component has been disclosed inJapanese Patent 38-2398.  As an example of the latter method,the production of modified polyesters by mixing and meltinga prepolymer containing aliphatic tertiary amino groups in.the linear polyester that constitutes the matrix is disclosedin Japanese Patent 39-25299.  But as is explained in detail  \n—3—  \nin both of the above patent publications,the compound thatcontains tertiary amino groups generally has a low heat re-sistance,and tends to decompose especially when polyesteris present.  It decomposes during the polymerization,orduring melting and mixing with the linear polyester thatconstitutes the matrix,or even during melt molding of themodified polyester,so not only does coloration of the poly-ester product occur but the objective of introducing a basicgroup cannot be fully achieved.  \nVarious investigations have been made in the past inorder to improve the above shortcomings of methods fo","cbCail2GVAjyowXW","https://ap.wps.com/l/cbCail2GVAjyowXW","pdf",1070396,46,"English","# SPECIFICATION\n## 1. Title of Invention\n## 2. Claim\n## 3. Detailed Description of the Invention","[{\"question\":\"What is the core method described for producing dyeable linear polyesters?\",\"answer\":\"The method involves mixing and melting a polyester containing tertiary nitrogen with a tertiary nitrogen-containing diol defined by generic formulas, in polyethylene terephthalate or a linear polyester mainly of ethylene terephthalate units.\"},{\"question\":\"Why are earlier methods for introducing basic polar groups considered insufficient?\",\"answer\":\"Earlier approaches using compounds with tertiary amino groups are described as having low heat resistance, tending to decompose during polymerization, melting and mixing, or melt molding, which leads to coloration but incomplete achievement of the intended basic-group introduction.\"},{\"question\":\"What advantage does the invention claim for the selected diol?\",\"answer\":\"The invention focuses on using a diol containing tertiary nitrogen that excels in thermal stability to improve production outcomes for acid-dyeable linear polyesters.\"}]","A Method for Producing Linear Polyesters - Patent Bureau of Japan Official Gazette | PDF",1789967322,116]