[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-323905-105":59,"doc-detail-323905-en":131},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":124,"head_meta":126,"extra_data":128,"updated_unix":130},105,"en","method-for-manufacturing-a-fast-curing-phenolic-resin","METHOD FOR MANUFACTURING A FAST-CURING PHENOLIC RESIN","","Method for manufacturing a fast-curing phenolic resin by reacting phenol and formaldehyde at normal or elevated pressure using a catalyst with low acidity rather than divalent metal salts. The process targets high o-novolak production with a specified o/p ratio, controlled phenol-to-formaldehyde molar ratio, and catalyst selection based on pKa range. Claims also require reaction temperature at 100°C or above to achieve the desired curing behavior and o-isomer selectivity.",{"@graph":69,"@context":123},[70,84,106],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/method-for-manufacturing-a-fast-curing-phenolic-resin/323905/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/method-for-manufacturing-a-fast-curing-phenolic-resin/323905.png","ImageObject",300,407,{"name":92,"@type":93},"Ava Thompson","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-28","2026-09-21",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",12,{"@type":107,"mainEntity":108},"FAQPage",[109,115,119],{"name":110,"@type":111,"acceptedAnswer":112},"What are the key ingredients and their molar ratio in the claimed method?","Question",{"text":113,"@type":114},"Phenol and formaldehyde are reacted at a phenol/formaldehyde molar ratio of 0.6 to 1.0.","Answer",{"name":116,"@type":111,"acceptedAnswer":117},"What type of catalyst does the invention rely on, and how is it characterized?",{"text":118,"@type":114},"A low-acidity catalyst is used, and in Claim 2 the catalysts are selected from acids with 1 \u003C pKa \u003C 10.",{"name":120,"@type":111,"acceptedAnswer":121},"How does reaction temperature relate to producing the desired resin?",{"text":122,"@type":114},"Claim 3 specifies that the reaction temperature is 100°C or above, supporting high o-isomer selectivity and fast-curing performance.","https://schema.org",{"og:url":83,"og:type":125,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":127,"canonical":83},"index,follow",{"doc_id":129,"site_id":62},323905,1790519254,{"code":4,"msg":5,"data":132},{"doc_id":129,"user_id":133,"nickname":92,"user_avatar":134,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":105,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":140,"language":141,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":142,"faqs":143,"seo_title":144,"seo_description":67,"update_tm":145,"read_time":146,"preview_page_count":4},1649267921044,"https://us-avatar.wpscdn.com/avatar/1800007509477c92dfb?_k=1786009248482753345","Etsube,S.,and Motoyuki Nanjo  \nMethod for manufacturing a fast curingphenolic resin.8 p.  \nPatent(Japanese)No.55-155013(1980).Filed:  TRANSLATION NO.4420  \nH8  \nh  \nJapanese Kokai Patent No.Sho 55[1980]-155013  \nJAPANESE PATENT OFFICEPATENT JOURNALKOKAI PATENT NO.SHO 55[1980]-155013  \nInt.c1.³:  \nC 08 G 8/08Sequence Nos.for Office Use:7455-4JApplication No.:Sho 54[1979]-61478Application Date:May 21,1979Publication Date:December 3,1980  \n# METHOD FOR MANUFACTURING A FAST-CURING PHENOLIC RESIN\n\nShigeru Etsube2-24-12 KaiyadoToride-shi  \nInventors:  \nMotoyuki Nanjo2-12 TsurumineAsahi-ku,Yokohama-shi  \nApplicant:  \nSumitomo Bakelite Co.,Ltd.l-2-2 Uchisaiwai-choChiyoda-ku,Tokyo-to  \n# Claims\n\n1.  A method for manufacturing a fast-curing phenolic resinwith the following characteristics:  a phenol and formaldehydeare reacted at normal pressure or elevated pressure at a molarratio of 0.6 to 1.0 in the presence of a low-acidity catalyst  \nDigitized by the Internet Archivein 2019  \nhttps://archive.org/details/methodformanufac00etsu  \nPage 2  \nfor the purpose of producing a high o-novolak at an o/p ratioof 0.8 to 2.5.  \n2.  The method for manufacturing a fast-curing phenolicresin specified in Claim 1 wherein one,two,or more low-acidity catalysts are selected from among acids of 1 \u003Cpka \u003C10.  \n3.  The method for manufacturing a fast-curing phenolicresin specified in Claim l wherein the reaction temperatureis 100℃ or above.  \n# Detailed explanation of the invention\n\nThe objective of the present invention is to produce afast-curing phenolic resin both safely and inexpensively,andit is characterized by the fact that a reaction is carried outin the presence of a weak acid without recourse to divalentmetal salts as catalysts.  \nMany methods for developing high o-phenolic resins havebeen proposed ever since H.L.Bender et al.noted that aphenolic resin with a high o-bond content can be obtained andthat such a high o-phenolic resin has a high curing rate if adivalent metal salt is employed as catalyst.  In these  \nconventional techniques,however,divalent metal salts must beemployed in a certain form,and it has been deemed impossibleor impractical from an industrial point of view to produce  \nsuch a resin with an acid catalyst only.  It is a well-establishedfact that divalent metal salts have an o-orientation.  As a  \nresult of extensive research,however,the present inventors havediscovered that,when a phenol and formaldehyde are reacted,the o-orientation is a mechanism that accompanies an addition  \nPage 3  \nreaction and that,even if a reaction is carried out at atemperature of 100℃ or below in the presence of a divalentmetal salt catalyst,a phenolic resin with a low o-isomer  \ncontent is obtained since the condensation favors the p-position.In other words,one of the requisites for producing a high  \no-phenolic resin with a high o-isomer content is that condensationbe carried out at a temperature of 100℃ or below,which reducesthe o/p selectivity.  Furthermore,if an ordinary acid catalystis employed,a random novolak(i.e.,high p-novolak)is produced.The reason is that the p-condensation is favored is that thereaction is elicited with a strong acid with a low pka value.The present inventors also discovered that a high o-isomerselectivity could be attained at the condensation stage if aweak acid with a high pka value is employed as an acidcatalyst.  \nBased upon the foregoing discoveries,it is natural toassume that if a reaction is carried out at a temperature of100℃ or above,at which the p-orientation is reduced(i.e.,there is no significant difference in the reaction rate of theo-position and p-position of the phenolic nucleus)and theo-isomer selectivity emerges,a high o-phenolic resin will beproduced without recourse to a divalent metal salt as catalyst.  \nThe present invention concerns a method for manufacturinga high o-phenolic resin in the presence of a low-acidity  \ncatalyst without recourse to conventional divalent metal saltsas o-orientation catal","cbCailrSmoQL0Ytg","https://ap.wps.com/l/cbCailrSmoQL0Ytg","pdf",933616,28,"English","# Claims\n## Claim 1\n## Claim 2\n## Claim 3\n# Detailed explanation of the invention","[{\"question\":\"What are the key ingredients and their molar ratio in the claimed method?\",\"answer\":\"Phenol and formaldehyde are reacted at a phenol/formaldehyde molar ratio of 0.6 to 1.0.\"},{\"question\":\"What type of catalyst does the invention rely on, and how is it characterized?\",\"answer\":\"A low-acidity catalyst is used, and in Claim 2 the catalysts are selected from acids with 1 \\u003c pKa \\u003c 10.\"},{\"question\":\"How does reaction temperature relate to producing the desired resin?\",\"answer\":\"Claim 3 specifies that the reaction temperature is 100°C or above, supporting high o-isomer selectivity and fast-curing performance.\"}]","METHOD FOR MANUFACTURING A FAST-CURING PHENOLIC RESIN | PDF",1789966506,71]