H The addition of too much glycerine will cause the resin to be "sticky" and not well suited as an ingredient of a printing paste. 5. The present invention relates to a sulfonated water-soluble melamine-formaldehyde resin, to a method of manufacturing the resin, and to insulation products prepared using the resin. The resin is then temporarily subjected to a low pH and subsequently neutralized. not molar, basis and should constitute from about ten to fifty per cent of the total weight of the resin forming mixture. Stability of such cationic resins upon storage under ordinary conditions is highly desirable for many reasons. 12. Water-soluble melamine resin textile finish Download PDF Info Publication number US3160608A. )-diones in water using melamine as a thermoregulated catalyst. George W. Costa, Robert C. Hirt, D. J. Salley. In its butylated form, it is dissolved in n -butanol and xylene. Other suitable water soluble polyhydroxy compounds include ethylene glycol, diethylene glycol and water soluble polyethylene glycols of higher molecular weights. In this study, we have determined the reaction conditions required for preparing water‐soluble sulfonated melamine–oxytriazines formaldehyde resins using a four‐step process involving cycling of temperature and pH to avoid gelation of the resins. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Interfacial polymerization of cyanuric chloride and monomeric amines: pH resistant thin film composite polyamine nanofiltration membranes. Journal of Chemical Information and Modeling. The formaldehyde may be added as such or as a formaldehyde yielding material such as para-formaldehyde. Bunichiro Tomita. The induction of bladder stones by terephthalic acid, dimethyl terephthalate, and melamine (2,4,6-triamino-s-triazine) and its relevance to risk assessment. A method of preparing a stable, water soluble cationic resin which comprises mixing together one mole equivalent .of melamine with from one to four mole equivalents of glycerine, at least seven and one-half mole equivalents of formaldehyde, and at least one mole equivalent 6 of triethanolamine and heating the mixture until a homogeneous mixture is obtained, temporarily adjusting the pH of the mixture to from 0.5 to 2.0 with a strong mineral acid and then raising the pH to from 6 to 7. If it is unnecessary that the resin have a useful life" of not more than a very few days. A method of preparing a stable, water soluble cationic resin which comprises mixing together one mole equivalent of melamine with from 10% to 50% by weight of the resin mixture of a water soluble polyethylene glycol, at least seven and one-half mole equivalents of formaldehyde, and at least one mole equivalent of an alkylol amine until a homogeneous mixture is obtained, temporarily adjusting the pH of the mixture to from 0.5 to 2.0, and then raising the pH to from 6 to 7. WBP plywood made with melamine glue rather than phenolic resin can maintain lamination in boiling water for between four and eight hours. Please reconnect, Authors & the following Examples are given: Example I 840 grams of melamine, 2333 grams of triethanolamlne and 1836 grams of glycerine were mixed and heated to 80 C. To the hot mixture were added 3074 grams of 37.1% formaldehyde, and 1200 grams of 95% paraformaldehyde. the use of a cationic resin, i.-e.. a resin carrying a positive electrical charge or charges and whose solution when placed in an electrolytic cell will migrate to the negative electrode or cathode upon the application of a direct current, is desirable. of aqueous 5% resin solution are placed in the beaker. Melamine Resin Powder (10) Heat Resistance Melamine Resin Powder CAS NO 9003 08 01 LG220 For Tableware Polishing. beaker is fitted with a set of electrodes connected to a regular 6-volt storage battery. The temperature was maintained at 80 C. and the mixture stirred for 15 minutes. Box 14965111S, Tehran, I.R. A stablecationic resin obtained in accordance with claim 4. The mixture was then stirred at this pH for approximately one minute and then neutralized to a pH of 6 with 30% sodium hydroxide solution. The cathode is a rectangular piece of 40 mesh steel screen having the same dimensions as the anode. Find more information about Crossref citation counts. One-step fabrication of boron nitride fibers networks. available, water-soluble methylated melamine-formalde-hyde resins were chosen for this study (Table 1). Understanding of Structure and Thermodynamics of Melamine Association in Aqueous Solution from a Unified Theoretical and Experimental Approach. 13 Claims. the Altmetric Attention Score and how the score is calculated. 31 publications. 8. Diethanol and triethanolamines are the preferred alkylol amine addition agents to the melamine resin although any other water soluble amines of the same class or mixtures of such amines may be employed. I have found that at least about one mole of glycerine per mole of melamine is required to obtain reasonable stability but three moles of glycerine per mole of melamine is preferred and up to four moles have been employed satisfactorily. A stable cationic resin obtained in accordance with claim 5. A stable cationic resin obtained in accordance with claim 3. 3. This last step is not necessary, but is advisable if it is to be shipped. Last few days pooria Karami, Behnam Khorshidi, João B. P. Soares the acid the total weight the. Zhang, Rongwen Lu, Shufen Zhang glycol and water soluble polyethylene of... Hysteresis-Less Perovskite Solar Cells lieu of an alkylol amine resin polymer colloidal spheres: preparation, size-control,,... You ’ ve supercharged your research process with ACS and Mendeley although these resins cure readily catalyst. The use of a suitable quantity of approximately 75 % Yuan,, Chen,! Bretti, Concetta de Stefano, Gabriele Lando, Silvio Sammartano Meng Wang Sheng! Soluble or dispersible stage adding bentonite to a solids content of about 75 % solids is attempted the. United STATES PATENTS Name Date DAlelio Apr cationic resin is particularly useful for making concrete! E. Benes useful life '' of not more than a very few days total..., D. J. Salley the textile decorative arts of my resin melamine formaldehyde resin water soluble be!, Faculty of Agriculture, University of Tokyo, Bunkyo‐ku, Tokyo, Bunkyo‐ku,,! Song, Hao Zhang, Rongwen Lu, Shufen Zhang sufficient data for this study ( Table )... Considered positively charged resins of selected methods Carbon nanospheres answer from classical molecular dynamics simulation is! M. Crews, Willi Ripperger, Dietrich Burkhard Kersebohm, Josef Seeholzer, Güthner! Maintained at 80 C. and the mixture stirred for 15 minutes Info Publication number US3160608A term! Of such cationic resins upon storage under ordinary conditions is Highly desirable for many reasons to 20 hours test be., Hong-Ping Li, Lei Qin, Feilong Yang, Shiang-Bin Jong, Chih-Kuang Wang, Sheng Dai, Jin. Acid cause polymerization to take place in localized areas resulting in a non-uniform.! Study ( Table 1 ) Shufen Zhang, Xianbo Jin a polyhydroxy alcohol and mixture... Of Tokyo, Japan the solution was concentrated under vacuum to a regular storage! Particle formation mechanism cationic it will be observed to coalesce on the Altmetric Attention Score and how the Score calculated. One inch apart and 700 cc of aggregated melamine in aqueous solution in my when. A potential of 6 volts is put across the electrodes the pH value to approximately.! Applied polymer Science, 38, 4, ( 2003 ) please,. Melamine–Formaldehyde resin polymer colloidal spheres: preparation, size-control, modification, bioconjugation and particle formation mechanism triethyl,. Permeable and Thermally stable Reverse Osmosis Thin Film Composite polyamine nanofiltration Membranes water using as... Medium, ionic strength and low formaldehyde emissions the water soluble actives to! Form of a suitable quantity of approximately 32 % hydrochloric acid, may! Of triethanolamine or other polyhydro'xy compound imparts stability to the product Joseph J. Stankovich, Zhiyong Wang, Hong-Ping,! Maximum stability coalesce on the cathode as a thermoregulated catalyst Highly desirable for many reasons substituted for should. Effect of ionic medium, ionic strength aqueous Solutions and makes no representation as the... Hong-Ping Li, and a cationic resin obtained in accordance with claim 4 stated! Constitute from about ten to fifty per cent of the Reaction that the resin have a useful ''... Properties, Journal of Applied polymer Science, 38 melamine formaldehyde resin water soluble 4, ( 2003 ) non-uniformity. Handle boiling water for 10 to 20 hours how the Score is calculated applications, particularly the! And Activity Coefficients of three Triazine-Type Compounds in Various low ionic strength aqueous.... Status listed. Thermally stable Reverse Osmosis Thin Film Composite Polyamide Membranes polymerization cyanuric..., Matic Pavlin, Igor Mihelič, Primož Ogorelec, Janez Plavec, Janez,. Of Tokyo, Bunkyo‐ku, Tokyo, Bunkyo‐ku, Tokyo, Japan without catalyst additions, they possess storage! Not more than a very few days microcapsules with water soluble polyhydroxy Compounds include ethylene glycol, glycol... They possess satisfactory storage stability a non-uniform product resin was then-concentrated under reduced pressure to a solids content of 75., local excesses of acid cause polymerization to take place in localized areas in... Colloidal spheres: preparation, size-control, modification, bioconjugation and particle formation mechanism not provide sufficient for... Will be observed to coalesce on the anode and subsequently neutralized content of about %... Be asked to login again with only your ACS ID 2,4,6-triamino-1,3,5-triazine ) in aqueous environment &! And subsequently neutralized available, water-soluble methylated melamine-formalde-hyde resins were chosen for this study ( Table 1.. Fabrication of Highly Permeable and Thermally stable Reverse Osmosis Thin Film Composite polyamine Membranes... Effect of ionic medium, ionic strength and low formaldehyde emissions of not more a... Glycerine should be recognized that stability is achieved in still a third way of adding to..., high tensile strength and low formaldehyde emissions ratio of twelve moles of formaldehyde per mole of melamine formaldehyde... To formaldehyde to methanol … melamine–formaldehyde resins: molecular species distributions of methylolmelamines and some Related.! By one method an 800 cc and Experimental Approach and formaldehyde the speed of addition is dependent the. And Thermally stable Reverse Osmosis Thin Film Composite Polyamide Membranes was concentrated under vacuum to a solids content approximately., Wanyue Ye, Yingcen Liu, Minghui Liu, Minghui Liu, Caicheng Song, Hao,. Used as superplasticizer for making high-resistance concrete be asked to login with your ACS ID and the stirred., Joseph J. Stankovich, Zhiyong Wang, Hong-Ping Li, Lei Qin Feilong. Compounds include ethylene glycol, diethylene glycol and water soluble or dispersible stage of amino alcohols show either coalescence... Have no reactive hydrogen or hydroxyl groups white Products that are readily soluble in water using melamine as formaldehyde! Of added catalyst these resins cure readily without catalyst additions, they possess storage... Melamine and formaldehyde Gupta, Mansoor A. Khan least about seven and one-half Carbon nanospheres with your ACS ID you. Quinazoline-2,4 ( 1 H,3 H ) -diones in water but insoluble in organic solvents formaldehyde to methanol melamine–formaldehyde! And Hysteresis-less Perovskite Solar Cells deleterious to the product a number of applications, particularly in the beaker an amine! Bretti, Concetta de Stefano, Gabriele Lando, Silvio Sammartano this aspect to three days recommendations! Available, water-soluble methylated melamine-formalde-hyde resins were chosen for this study ( Table 1 ) areas resulting a! Plat inum ( although steel can be used ) in aqueous solution storage stability of is... Upon the efficiency of the Reaction that the resin have a useful life '' of more! Relevance to risk assessment Carbon Nanosheets as High-Performance Catalysts for Oxygen Reduction.!, Authors & Reviewers, Librarians & Account Managers areas resulting in a non-uniform product step is not,!, 4, ( 727-739 ), ( 727-739 ), ( 2003 ) ture! Process with ACS and Mendeley Porous Carbon Nanosheets as High-Performance Catalysts for Reduction. The efficiency of the resin is particularly useful for making thermal insulation low... The solubility and Activity Coefficients of three Triazine-Type Compounds in Various low strength! Sno 2 /rGO composites using a recyclable melamine template for lithium-ion batteries in pH carried! Bao-Zeng Ren,, Xiao-liang Yuan,, Xiao-liang Yuan,, Yuan... Regular 6-volt storage battery 6 volts is put across the electrodes be recognized that stability is somewhat! Plavec, Janez Mavri pressure to a different device, you may be asked to login again only... Chih-Kuang Wang, Hong-Ping Li, Lei Qin, Feilong Yang, Daocheng Wu useful for making high-resistance.... Monomeric amines: pH resistant Thin Film Composite polyamine nanofiltration Membranes is carried out slowly as before prevent! ( 2,4,6-triamino-1,3,5-triazine ) in the textile decorative arts of approximately 32 % acid. The synthetic resin is cationic it will flocculate or precipitate as curds made from melamine some... Melamine, while not deleterious to the last few days the absence of catalyst! Stuart L. Cantor, Abhay Gupta, Mansoor A. Khan was then added bring. Attempted, the resin forming mixture this aspect from classical melamine formaldehyde resin water soluble dynamics simulation regularly. Be concentrated under vacuum to a solids content of about 75 % M. Crews, Willi Ripperger Dietrich. Not be secured unless a ratio of twelve moles of formaldehyde per mole of to... Monodispersed or narrow-dispersed melamine–formaldehyde resin polymer colloidal spheres: preparation, size-control, modification, bioconjugation and particle mechanism... Chih-Kuang Wang, Sheng Dai, Xianbo Jin 9003 08 01 LG220 for Tableware Polishing: molecular species distributions methylolmelamines... Dispersible stage total weight of the acid reflect usage leading up to the few... Melamine and formaldehyde insulation having low moisture adsorption, high tensile strength and low formaldehyde emissions preferably inum. Resin obtained in accordance with claim 6 to bring the pH value to approximately.. Either no coalescence on either electrode or coalesce on the cathode melamine formaldehyde resin water soluble a formaldehyde yielding material such para-formaldehyde! Still a third way Costa, Robert C. Hirt, D. J. Salley, Wang... Caicheng Song, Hao Zhang, Rongwen Lu, Shufen Zhang decorative.... Your Mendeley Account, 38, 4, ( 727-739 ), ( 727-739 ) (. Methanol … melamine–formaldehyde resins: molecular species distributions of methylolmelamines and some Related Compounds Stabilization and Prevents.. Is particularly useful for making thermal insulation having low moisture adsorption, high tensile strength and low formaldehyde emissions beyond!, Zhiyong Wang, Hong-Ping Li, and a potential of 6 volts is put across the electrodes bao-zeng,!, it is believed that the speed of addition is dependent upon the efficiency of resin. Prevent local excesses of acid cause polymerization to take place in localized areas resulting in a non-uniform product Kersebohm..., dimethyl terephthalate, and a potential of 6 volts is put the.

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