[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-322314-105":3,"detail-sidebar-cat-0-en-105":81,"doc-detail-322314-en":131},{"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":74,"head_meta":76,"extra_data":78,"updated_unix":80},105,"en","polyester-compositions-dyeable-with-acid-dyes","Polyester Compositions Dyeable with Acid Dyes","","Patent publication for polyester compositions designed to be dyeable with acid dyes. Describes a polyester whose principal structural component is alkylene terephthalate, combined with 2–20% by weight of a specific polymer defined by a generic formula containing an alkylene group and an integer parameter. The detailed description explains that prior amine-based approaches were limited by thermal instability, causing decomposition, discoloration, chain scission, and crosslinking, while the proposed melamine-backbone polymer offers heat resistance and improved dyeability without those drawbacks during polymerization and spinning.",{"@graph":14,"@context":73},[15,34,56],{"@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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compositions dyeable with acid dyes, formed by combining an alkylene terephthalate-based polyester with a specified polymer amount.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What does the claim specify about the composition?",{"text":68,"@type":64},"It specifies a polyester with alkylene terephthalate as the principal structural component and 2–20% by weight of a polymer defined by a generic formula with defined alkylene-group carbon range and an integer parameter n of 5 or above.",{"name":70,"@type":61,"acceptedAnswer":71},"Why is the proposed polymer preferred over earlier amine-based approaches?",{"text":72,"@type":64},"The description states that amine compounds are generally unstable at high temperatures, leading to decomposition, coloring, chain scission, and crosslinking, whereas the melamine-backbone polymer is thermally stable and avoids those unwanted phenomena during polymerization and 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\nPatent(Japanese)No.48-91146(1973).Filed:  TRANSLATION NO.4624  \nT R A N S L A T I O N  \nPATENT BUREAU OF JAPAN  \nOFFICIAL GAZETTE FOR UNEXAMINED PATENTS  \nJapanese Patent Application Publication Kokai:48-91146  \nPublication Date:November 27,1973  \nNumber of Inventions:  1  \nRequest for Examination:  (Not yet requested).  (Total of 4 pages)Japanese ClassIntrabureau No.  \n25(1)D 3273654825(1)A 247.166604842D 12635847  \nPOLYESTER COMPOSITIONS DYEABLE WITH ACID DYES  \nApplication No.:47-24163  \nApplication Date:March 9,1972  \nInventors:Kazuya Chimura  \n2-10-15 Nishi Sakae,Otake-shi,Hiroshima-kenHiroshi Iwata  \n3-3-1 Kurokawa,Otake-shi,Hiroshima-kenYasuo Nakamura3-2-5 Kurokawa,Otake-shi,Hiroshima-ken  \nApplicant:Mitsubishi Rayon K.K.2-8 Kyobashi,Chuo-ku,Tokyo  \nPatent Attorney:  Toshio Yoshizawa  \nSPECIFICATION  \n# 1.  Title of Invention\n\nPolyester Compositions Dyeable with Acid Dyes  \n# 2.  Claim\n\nPolyester compositions dyeable with acid dyes comprisedof a polyester with alkylene terephthalate as the principalstructural component and 2-20号by weight of a polymerexpressed by the generic formula  \n(wherein X is an alkylene group with 2-12 carbon atoms,andn is an integer of 5 or above).  \n# 3.  Detailed Description of the Invention\n\nThe present invention relates to a polyester compositionwith affinity for acid dyes.  \nAlthough linear polyesters prepared from glycol and di-carboxylic acid,especially polyethylene terephthalate andpolytetramethylene terephthalate,have been widely utilizedin the past by industry as fibers,films,and other moldings,there is no ionic group with affinity for acid dyes or basicdyes,so fibers and films were dyed primarily with dispersedyes.  However,disperse dyes had the drawbacks of beingexpensive,requiring special dyeing conditions such as highpressure dyeing and carrier dyeing especially for polyesters,and moreover the dyed material lacks vividness and its sub-limation fastness is low.  \nDigitized by the Internet Archivein 2016  \nhttps://archive.org/details/polyestercomposi00chim  \n—2—  \nConsequently,many methods of copolymerizing or blendingaliphatic or aromatic amine compounds in order to bestow anaffinity for ionic dyes,especially acid dyes,have beentested in the past.  However,generally speaking aminecompounds are unstable under high temperatures,so in theprocesses where the polyester is heated to its melting pointor above during polymerization or spinning,the amine notonly undergoes thermal decomposition and becomes colored,but also brings about scission of the principal chain of thepolyester and unwanted reactions such as crosslinking.  Thesebecome important shortcomings from the standpoint of manufactur-ing polyesters with an affinity for acid dyes.  \nFrom the viewpoint that an atomic group with excellentheat resistance and with an affinity for acid dyes is in-dispensible in order to obtain affinity for acid dyes andto avoid damaging the excellent inherent properties of heatresistance,high strength,high whiteness,chemical resistance,fiber properties,feel,etc.,when made into fibers,thepresent inventors have already proposed in Japanese PatentApplication 45-66787 the inclusion in the polyester of apolymer expressed by generic formula  \n—3—  \n(wherein R₁and R₂indicate alkyl groups with 1 to 12 carbonatoms,X indicates an alkylene group with 2 to 12 carbons,and n indicates an integer of 5 or above).  As a result offurther investigation of this type of polymer,the presentinventors discovered a polymer that exhibits better properties,especially dyeability,and completed the present invention.  \nThat is,the present invention concerns polyestercompositions dyeable with acid dyes obtained by including2-20%by weight of the polymer expressed by generic formula  \n(wherein X indicates an alkylene group of 2 to 12 carbons,and n is an integer of 5 or above)in a polyester whoseprincipal structural component is an alkylene terephthalate.","cbCaifW7nQlIDT2S","https://ap.wps.com/l/cbCaifW7nQlIDT2S","pdf",600442,26,"English","# 1. Title of Invention\n# 2. Claim\n# 3. Detailed Description of the Invention","[{\"question\":\"What is the main invention subject?\",\"answer\":\"Polyester compositions dyeable with acid dyes, formed by combining an alkylene terephthalate-based polyester with a specified polymer amount.\"},{\"question\":\"What does the claim specify about the composition?\",\"answer\":\"It specifies a polyester with alkylene terephthalate as the principal structural component and 2–20% by weight of a polymer defined by a generic formula with defined alkylene-group carbon range and an integer parameter n of 5 or above.\"},{\"question\":\"Why is the proposed polymer preferred over earlier amine-based approaches?\",\"answer\":\"The description states that amine compounds are generally unstable at high temperatures, leading to decomposition, coloring, chain scission, and crosslinking, whereas the melamine-backbone polymer is thermally stable and avoids those unwanted phenomena during polymerization and spinning.\"}]","Polyester Compositions Dyeable with Acid Dyes | PDF",1789962402,66]