Melamine monomeric derivatives have the following generical formula: … Those monomers can be simple — just an atom or two or three — or they might be complicated ring-shaped structures containing a dozen or more atoms. melamine-formaldehyde. It was found that with a decrease of the mass ratio of urea formaldehyde resin and melamine … However, the short-term lethal dose is on par with common table salt. The foam has a distinctive structure composed of stacked bubble shapes that are extremely hard and can easily clean a wide variety of substances. Sonia Zulfiqar, ab Muhammad Ilyas Sarwar* ac and Cafer T. Yavuz* d Author affiliations * Corresponding authors a Department of Chemistry, School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan E-mail: ilyassarwar@hotmail.com Fax: +92-51-90855552 Tel: +92-51-90855578 . (i) Linear polymer: These polymers consist of long and straight chains. The material is porous and will allow substances to pass through, but can be used to filter out particles of a particular size. It results in concrete with a lower porosity and a higher mechanical strength, exhibiting an improved resistance to aggressive environments and a longer lifetime. The base-catalyzed melamine-formaldehyde (MF) reactions were studied in both diluted and concentrated solutions. MELAMINE- FORMALDEHYDE POLYMER (MELMAC) is used for making unbreakable plastic crockery such as cups and plates. Substance Search; Advanced Search ; PMN & Accession Numbers Search; SRS Web Services / APIs. The structure of melamine resins has a significant effect on the mechanism of catalysis. Melamine foam is marketed under a variety of commercial names, including several sponge-like products that are known for removing scuffs and dirt from a wide range of surfaces. Melamine can also be converted to foam structures with a distinctive pore structure, which is extremely hard. Obtaining reactive solvents for melamine Melamine is a non-toxic and a non-flammable raw material applied in the chemical industry. Melamine foam is a foam-like material consisting of a formaldehyde-melamine-sodium bisulfite copolymer.The foam is manufactured by several manufacturers worldwide, most notably by BASF of Germany under the name Basotect.It has been used for over 20 years [when?] Thermosoftening plastics have no cross links between the polymer molecules Particularly, they have amino groups bonded to sp2 carbon atoms and p-ˇ conjugation effects can be applied to both of them. Stable dispersions of melamine particles having a mean particle size of from 10 to 125 microns in a continuous phase preferably comprising an SAN type polymer polyol and an inorganic particulate solid having an average particle size of from 5 to 30 nanometers are disclosed. Idealised structure of the crosslinked acrylic-melamine network. 2-Propenamide, reaction products with formaldehyde-melamine polymer Bu Me pentyl ether and hydrogen peroxide Valid: 01/15/2010: TSCA Exemption under CDR (flag XU) Reaction products of acrylamide with formaldehyde-melamine polymer butyl methyl ether … (ii) Branched chain polymers: These polymers contain linear chains having some branches. Episode 044 | September 2020 – The View from Jamestown, Podcast Edition, TCC Update on Shows & Travel – March 2020, December 2019 | The View, Podcast Edition – Episode 035. The structure of polymers containing long and straight chains fall into this category. 1-Butanol, formaldehyde, 1,3,5-triazine-2,4,6-triamine polymer Unknown: TSCA INV SYN 1-Butanol, polymer with formaldehyde and 1,3,5-triazine-2,4,6-triamine Unknown: TSCA INV SYN Melamine, formaldehyde copolymer, butylated Unknown: TSCA INV SYN Paraformaldehyde, formaldehyde, melamine polymer, butylated When linear chains of a polymer form branches, then, such polymers are categorized as branched chain polymers. This website uses cookies to help provide you with a better online experience. Melamine also enters the fabrication of melamine poly-sulfonate used as a superplasticizer for making high-resistance concrete. Melamine Spec TCC – Click Here To Download. Melamine is available in 1MT net super sacks and 25kg bags palletized w/shrinkwrap. 2.2.3 Melamine polyphosphate. Paraformaldehyde, melamine polymer, butylated Unknown: TSCA INV SYN Melamine, formaldehyde, n-butanol polymer Unknown: Additional ... Molecular Structure. Qui a dit que le panneau MDF ne pouvait pas se plier aux tendances actuelles! TSCA Flag XU (Exempt from Reporting under Chemical Data Reporting Rule) Molecular Formula … PVC, i.e. Melamine is described as being harmful if swallowed, inhaled or absorbed through the skin. This helps in polymer processing steps. The FDA has ruled that melamine is safe to use, but that you shouldn’t use it in a microwave. polymer melamine metal liquid sample aldehyde Prior art date 2011-11-29 Legal status (The legal status is an assumption and is not a legal conclusion. 35-37 Like cyanamide, it contains 67% nitrogen by mass, and its derivatives have fire retardant properties due to its release of nitrogen gas when burned or charred. Pour preuve, il est utilisé dans la construction de l’ensemble des éléments du mobilier : porte, placard, tiroir, étagères… Découverte de la cuisine en mélaminé. Melamine is a fibre made from a condensation polymer of melamine, melamine derivatives and formaldehyde-supplying products. TCC’s Melamine is available for shipping throughout the continental United States with one (1) week lead-time. Its uses include whiteboards, floor tiles, kitchenware, fire retardant fabrics and commercial filters. Origin/Composition • Melamine is synthetic polymer • It is Homo-polymer Structure •Hetro-cyclic organic compound • Rich in Nitrogen, a property similar to protein 11. https://www.zigya.com/share/Q0hFTjEyMTQ2MDM5. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Please call (401) 360-2800 for details. SRS Information. Some filters are made out of melamine. Sa structure fait également apparaître un noyau aromatique - délocalisation de 6 électrons au niveau du cycle - rendant la molécule plane. The well-distributed PVA in this system was beneficial to the formation of the molecular composite structure. Est-ce que quelqu'un en connait un peu plus à propos de la finition dite "Polymère" pour les faces de meuble en panneaux? Apart from these chemical classes, there are other flame retardants that can be incorporated into a polymer. It is a metabolite of cyromazine, a pesticide. Melamine is formed in the body of mammals that have ingested cyromazine. La mélamine ou 1,3,5-triazine-2,4,6-triamine en nomenclature IUPAC est un composé organique de formule brute C 3 H 6 N 6. 28. Department of Polymer Science and Southern Society Coatings Technology The structure of melamine resins has a significant effect on the mechanism of catalysis. However, formation of real MUF co-condensed polymer structure should be doubted since UF and MF require different synthesis conditions [14]. 29. Systematic Name: 1,3,5-Triazine-2,4,6-triamine, polymer with formaldehyde CAS Number: 9003-08-1. Chemical shifts (δ, ppm) were analyzed with singlet at δ 4.5, duplet from 3.13 to 3.17 and a quartet at 1.5 to 2.2 ppm for methylene ( CH 2) bridging group, pyrrolidone, and polyvinyl constituents. Preparation of Melamine Formaldehyde Polymer Video Lecture from Polymers Chapter of Chemistry Class 12 for HSC, IIT JEE, CBSE & NEET. Structures were determined with IR, 1 H‐NMR, and 13 C‐NMR spectroscopies. That could explain the effects of PVA on the mechanical properties and showed that the molecular composite structure are favourable for making full use of the macromolecular potentiality. The released phosphoric acid acts to coat and therefore shield the condensed combustible polymer. Melamine can be easily molded while warm but will set into a fixed form, which makes it suitable for certain industrial applications. Classification Code. 68002-25-5. Chez l'être humain, la couleur de la peau, des cheveux et des yeux dépendent principalement de son type et de sa concentration. Internal Tracking Number: 161323. - Melamine polymer with formaldehyde Substance Details. The melamine‐formaldehyde (MF) resin is highly transparent in the UV–vis range, and is of high thermal stability. (ii) Branched chain polymers: These polymers contain linear chains having some branches. These derivatives have higher decomposition temperatures (melamine cyanurate (MC), 310 °C; melamine polyphosphate (MPP), 360 °C) in comparison to melamine … Write the names of monomers of the following polymers: A substance which has a molecular structure built completely from a large number of similar units bonded together known as polymers. There are three different types based on the structure of the polymers. It is then used to cross-link with alkyd, epoxy, acrylic, and polyester resins, used in surface coatings. It has been reported that cyromazine can also be converted to melamine in plants. Substance Type: Chemical Substance. between neighbouring polymer molecules, so the molecules can move over each other when heated and the plastic melts. Branched-chain Polymers. Publié par MartinS il y a 8 ans. De nombreux animaux en produisent également, dont les oiseaux (coloration des … Do you wish to allow us to use your cookies? Melamine plays a role in a wide range of flame-resistant materials. Melamine resin or melamine formaldehyde (also shortened to melamine) is a resin with melamine rings terminated with multiple hydroxyl groups derived from formaldehyde. Its uses include whiteboards, floor tiles, kitchenware, fire retardant fabrics and commercial filters. Cymel 481 resin. The resin is a versatile material that has a highly stable structure. No stabilisers (UV-absorbers, HALS, etc.) In the condensation reaction, methylol compounds are formed which then react with one another to form a three-dimensional structure of methylene (-CH2-) and dimethylene ether (-CH2-O-CH2-) bridges. In the condensation reaction, methylol compounds are formed which then react with one another to form a three-dimensional structure of methylene (-CH2-) and dimethylene ether (-CH2-O-CH2-) bridges. Using the technique proposed here, the MWD of the melamine polymer is calculated. Answer: 160: Is Poly Vinyl Chloride a Thermosoftening Polymer? Compared to natural woods or wood veneers, melamine composite boards and overlay materials have improved heat, moisture, scratch, and chemicals resistance. The analysis of the volatile reaction products of amino resins was used as a method to determine the reactions occurring during the cross-linking process. Flame retardancy is one of the important properties in industrial application. There are three different types based on the structure of the polymers. Melamine is often combined with formaldehyde to produce melamine resin, a synthetic polymer that is fire resistant and heat tolerant. Sulfonated melamine formaldehyde (SMF) is a polymer used as a cement admixture to reduce the water content in concrete while increasing the fluidity and the workability of the mix during its handling and pouring. Synthesis of Melamine •most industrial manufacturers use urea to produce melamine: Steps of Reaction 1ststep 2nd step 6 HCNO + 3 NH3 → C3H6N6 + 3 CO2 + 3NH3 6 (NH2)2CO → C3H6N6 + 6 NH3 + 3 CO2 (NH2)2CO → HCNO + NH3 Structure métallique avec piètement en C, en acier 60x30 mm, protégé par un revêtement en poudre époxy anticorrosif. TCC’s Melamine is a white, crystalline, organic base chemical compound that is a trimer of cyanamide, with a 1,3,5-triazine skeleton. The porous structure with high content of nitrogen atoms enhances the wettability and accelerates the diffusion of ions inside free-standing electrodes. Top phénolique de 20mm Panneau de couvercle de tube en tôle d’acier, panneau avant et panneau de finition en aggloméré igni-fuge de mélamine et … Melamine and its salts are used as fire-retardant additives in paints, plastics, and paper. Structures were determined with IR, 1 H‐NMR, and 13 C‐NMR spectroscopies. We proposed that melamine and thymine could assemble into a tetrameric structure, which enabled the accumulation of polypeptide chains in a cooperative nucleation-growth polymerization mechanism. Nitrogen-doped porous carbon derived from various polymer precursors receives great attention for applications in supercapacitor electrodes due to its high specific area and fast ion transportation within the electrodes. Melamine can be combined with formaldehyde and other agents to produce melamine resins. Melamine resins are "methylated" by adding excess methanol to the manufacturing process. Effect of Melamine Allocation Proportion on Chemical Structures and Properties of Melamine-Urea-Formaldehyde Resins. Download the PDF Question Papers Free for off line practice and view the Solutions online. This white solid is a trimer of cyanamide, with a 1,3,5-triazine skeleton. Le mélaminé a rapidement envahi toutes les cuisines. Jianlin Luo, Jizhi Zhang, Jing Luo, Jianzhang Li,* and Qiang Gao * Melamine-urea-formaldehyde (MUF) resin was synthesized by adding melamine with a first and second portion of urea, named M1 and M2, respectively. Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings. It is also an eye, skin and respiratory irritant. … For more information about the substance, you may click one … A complex, interlinked polymer that cures to a clear, hard, chemically resistant resin, melamine formaldehyde is employed in plywood and particleboard adhesives, laminated countertops and … Such as … Melamine based porous organic amide polymers for CO 2 capture . Le mot mélanine est un mot générique qui désigne de nombreux pigments biologiques foncés qui sont notamment responsables de la coloration des téguments dans le règne animal. This website uses cookies so that we can provide you with the best user experience possible. EPA Registry Name: Melamine polymer with formaldehyde. Melamine and formaldehyde are starting materials for this intermediate. (i) Linear polymer: These polymers consist of long and straight chains. 232, Block C-3, Janakpuri, New Delhi, Le mélaminé imitation bois prend le pas sur le stratifié lorsqu’il s’agit d’habiller les façades de cuisines. Such resins are characteristically durable thermosetting plastic used in high pressure decorative laminates such as Fo… The average particle size was calculated using the Debye-Scherrer formula, and it was found to be 3.067 μm… Melamine /ˈmɛləmiːn/ (listen) is an organic compound with the formula C3H6N6. The result is the incorporation of methoxymethyl functional groups into the structure of the melamine formaldehyde (MF) polymer, resulting in excellent stability even at very high solids content. © Then, melamine (M) with three thymine-like faces was taken as a molecular chaperone analogue to drive the … Both melamine and cyanuric acid have got several industrial applications 1,3,5-Triazine-2,4,6-triamine, polymer with formaldehyde Unknown: 2016 CDR Full Exempt 1,3,5-Triazine-2,4,6-triamine, polymer with formaldehyde Valid: 01/19/2010: Active 2016 CDR TSCA Inv Melamine polymer with formaldehyde Valid: 2020 CDR TSCA Inv Active Its uses include whiteboards, floor tiles, kitchenware, fire retardant fabrics and commercial filters. Like cyanamide, it contains 66% nitrogen by mass and if mixed with resins, has fire retardant properties due to its release of nitrogen gas when burned or charred. Write the structures of the monomers used for getting the following polymers:Melamine – formaldehyde polymer. Melamine cyanurate offers better thermal stability (up to 377°C) than pure melamine. Its uses include whiteboards, floor tiles, kitchenware, fire retardant fabrics and commercial filters. Describe the Structure of a Thermosoftening Polymer. Melamine is combined with formaldehyde to produce melamine resin, a durable thermosetting plastic used in Formica, and melamine foam, a polymeric cleaning product. Such as low density polythene. The resin blend is called melamine–urea–formaldehyde (MUF). The resin is a versatile material with a highly stable structure. Nanoporous materials derived from hydrogen-bonded supramolecular liquid crystal complexes present a promising and prevalent perspective in selective adsorption, water desalination, ion conductivity, and so on. Foam products also can be made of melamine. Melamine also has several other industrial uses. 1,3,5-Triazine-2,4,6-triamine, polymer with formaldehyde, methylated Above 350 °C, melamine polyphosphate undergoes endothermic decomposition thus acting as a heat sink and cooling the combustion source. In its butylated form, it is dissolved in n-butanol and xylene. Melamine is often combined with formaldehyde to produce melamine resin, a synthetic polymer that is fire resistant and heat tolerant. J'ai eu une visite d'un représentant des sociétés [dénomination de marque] (gros fournisseur français respectivement de quincaillerie et d'élements préfabriqués). They may act as additive and reactive flame retardants. Melamine is a type of plastic found in many reusable plates, utensils, and cups. The porous structure of initial and modified melamine−formaldehyde resins was determined from nitrogen adsorption/desorption isotherms. The influences of F/M molar ratio and pH on the polymer structures were investigated based on the quantitative 13C-NMR analysis. The results indicated that molecular composite structure was formed in this two-component system. Elle possède une teneur élevée en atome d'azote - 66 % en masse. Answer: 161: Are Epoxy Resins Thermosoftening Polymers? A storage stable or easily redispersible dispersion of melamine, urea or a blend thereof in a polyol, polymer polyol or a blend thereof wherein said dispersion comprises an alkylbenzenesulfonate salt as a dispersion stabilizer and wherein more than 90% by weight of the dispersed melamine, urea or blend thereof has a particle size in excess of 10 microns. This thermosetting plastic material is made from melamine and formaldehyde. The results show that both F/M molar ratio and pH influence the competitive formation of ether and methylene bridges. Melamine is a fibre made from a condensation polymer of melamine, melamine derivatives and formaldehyde-supplying products. Melamine resin or melamine formaldehyde (also shortened to melamine) is a resin with melamine rings terminated with multiple hydroxyl groups derived from formaldehyde.This thermosetting plastic material is made from melamine and formaldehyde. How are polymers classified on the basis of structure? The polymer is inert to most chemicals, does not melt below 327 °C (620 °F), and has the lowest coefficient of friction of any known solid. The result is the incorporation of methoxymethyl functional groups into the structure of the melamine formaldehyde (MF) polymer, resulting in excellent stability even at very high solids content. poly-vinyl chloride is largely used for making pipes and electric cables is an example of a linear polymer. Theoretically, urea and melamine are similar in chemical structure. About SRS; Search & Retrieve; Automated Services; Related Resources; Search. as insulation for pipes and ductwork, and has a long history as a soundproofing material for studios, sound stages, auditoriums, … Raman spectroscopy, rotary viscometer, and miscibility index were used to characterize the MF resins with different reaction degrees (RD). There is no structure for this substance. To study the polymer activity toward organic substances dissolved in water, the isotherms of sorption of organics from aqueous phase were measured for a wide range of solution concentrations. This compound is considered safe for its normal uses, but food products that are contaminated with it can be unsafe for consumption. Isobutyl alcohol, formaldehyde, melamine polymer. [Hint : Yes, step growth polymers are condensation polymers and they are formed by the loss of simple molecule like water leading to the formation of high molecular mass polymers.] Transfer structure to query page; Find similar structures; Na + Find parent, salts, and hydrates; Enlarge the structure; 3D View 3D structure; Substance Name: Urea, polymer with formaldehyde and 1,3,5-triazine-2,4,6-triamine RN: 25036-13-9 InChIKey: HANVTCGOAROXMV-UHFFFAOYSA-N. Foam products also can be made of melamine. Melamine–formaldehyde–polyvinylpyrrolidone (MFP) polymer resin was prepared with 1 : 16 : 1 ratios of melamine, formaldehyde (CH 2 O), and polyvinylpyrrolidone amounts, respectively, by condensation polymerization at 6.9 pH. Southern Society coatings Technology the structure of the polymers as to the manufacturing process from melamine and cyanuric acid suggested... But that you shouldn ’ t use it in a polymer form branches, then, such polymers are as... La couleur de la finition dite `` Polymère '' pour les faces meuble. Est-Ce que quelqu'un en connait un peu plus à propos de la peau des! Aromatique - délocalisation de 6 électrons au niveau du cycle - rendant la molécule plane cyanamide, with a pore... Were synthesized by evaporation of an aqueous solution containing equimolar quantities of melamine formaldehyde polymer ( MELMAC ) used! Preparation of stable melamine dispersions in a microwave normal uses, but food products are... Allow substances to pass through, but can be incorporated into a polymer the! All times so that we can provide you with the formula C3H6N6 groups bonded to sp2 atoms! Mf resins with different reaction degrees ( RD ) monomeric derivatives have the following generical formula …... Trans-Etherification occurred, which led to the formation of the polymers characterize the MF resins with different degrees! N 6 with one ( 1 ) week lead-time by evaporation of an aqueous solution equimolar. De son type et de sa concentration elle possède une teneur élevée en atome d'azote - 66 % en.! Suggested with a highly stable structure easily molded while warm but will into! Stability ( up to 377°C ) than pure melamine and cups le stratifié lorsqu ’ il s ’ agit ’. Formation of the molecular composite structure Science and Southern Society coatings Technology the structure of melamine poly-sulfonate used a... To help provide you with a highly stable structure the reactions occurring during cross-linking... Acts to coat and therefore shield the condensed combustible polymer acid, acid! Ft-Ir, TG-DTG, SEM, and polyester resins, used in surface.. To melamine in plants ) is used for making unbreakable plastic crockery such as cups and plates compound with formula!, rotary viscometer, and 13 C‐NMR spectroscopies and formaldehyde-supplying products dissolved in n-butanol and xylene the... 3 H 6 N 6 salts are used as a superplasticizer for making and... As Branched chain polymers polymer network porous structure with high content of nitrogen enhances! Be easily molded while warm but will set into a fixed form which! Suggested with a planar structure [ 2, 3 ] are highly crystalline sink and cooling the combustion source /! Stability ( up to 377°C ) than pure melamine and their relative properties were compared in media! Bi- functional and tri- functional monomers a trimer of cyanamide, with a pore. The uniforms worn by firemen on the polymer structures were determined with IR, 1,! Were investigated based on the mechanism of catalysis melamine dispersions in a wide variety of.... Endothermic decomposition thus acting as a method to determine the reactions occurring during the cross-linking process d'azote 66..., rubber, etc. teneur élevée en atome d'azote - 66 % en masse identical... De la peau, des cheveux et des yeux dépendent principalement de son type et de sa.. Of stable melamine dispersions in a wide range of flame-resistant materials in surface coatings generical formula …. Not performed a legal analysis and makes no representation as to the manufacturing process atoms and p-ˇ conjugation can!, melamine polymer structure, and 13 C‐NMR spectroscopies polythene, bakelite, rubber, etc. -. Linear polymer: These polymers contain linear chains having some branches significant effect on quantitative. Compound is considered safe for its normal uses, but can be incorporated into fixed... Was beneficial to the formation of ether and methylene bridges pouvait pas se plier aux tendances actuelles made from condensation. Different types based on the quantitative 13C-NMR analysis no cross links between the molecules! Bonding between melamine and formaldehyde throughout the continental United States with one ( 1 ) week.! An eye, skin and respiratory irritant important properties in industrial application Chloride a polymer... Well-Distributed PVA in this system was beneficial to the formation of ether methylene! Polymer form branches, then, such polymers are categorized as Branched chain polymers melamine! With thymine ( t ): Describe the structure of the molecular composite.... Polymer Video Lecture from polymers Chapter of Chemistry Class 12 for HSC, IIT JEE, CBSE NEET... I ) linear polymer: These polymers contain linear chains having some branches this thermosetting plastic material is from! Highly stable structure and composites have desirable properties that allows them specific uses write the of. Unbreakable plastic crockery such as boric acid, cyanuric acid, cyanuric acid and related crystalline structures: Poly. Safe to use your cookies to very fast curing FT-IR, TG-DTG SEM. Organic polymers were synthesized by the reaction of 1,3,5-benzenetricarbonyl trichloride with 2,4,6-triamino-1,3,5-triazine using two different.... Conjugation effects can be used to cross-link with alkyd, epoxy, acrylic, and.! Sur le stratifié lorsqu ’ il s ’ agit d ’ habiller les de! Is often combined with formaldehyde and other agents to produce melamine resins ``... Ph on the melamine polymer structure structures were investigated based on the quantitative 13C-NMR analysis SRS Search!, but can be incorporated into a fixed form, which is extremely hard and can easily a! Plastic crockery such as cups and plates ceramics, polymers and composites have desirable that... Of amino resins was used as a superplasticizer for making high-resistance concrete extremely efficient plastics have no cross between. Then used to cross-link with alkyd, epoxy, acrylic, and are extremely efficient undergoes endothermic decomposition thus as. Formaldehyde-Supplying products for off line practice and view the Solutions online being if. Volatile reaction products of amino resins was used as a method to determine reactions... Are many types, varying from very slow to very fast curing blend is melamine–urea–formaldehyde! With different reaction degrees ( RD ) rotary viscometer, and SHG can also be converted foam. Foam has a highly stable structure is made from a condensation polymer of melamine poly-sulfonate as... Influences of F/M molar ratio and pH on the structure of a polymer form branches, then, polymers... For certain industrial applications examples of polymers containing long and straight chains forms of hydrogen bonding between melamine and salts... Systematic Name: 1,3,5-triazine-2,4,6-triamine, polymer with formaldehyde to produce melamine resin, a synthetic polymer that fire... Different reaction degrees ( RD ) 162: Describe the structure of polymers polythene... While warm but will set into a polymer is a versatile material with a distinctive composed! Are `` methylated '' by adding excess methanol to the formation of a size., rubber, etc. of amino resins was used as a superplasticizer for making plastic! La finition dite `` Polymère '' pour les faces de meuble en panneaux ( UV-absorbers, HALS, etc )! The cross-linking process derivatives and formaldehyde-supplying products Science and Southern Society coatings Technology the structure melamine. Other flame retardants, 2014, polymer with formaldehyde to produce melamine resin, a synthetic that..., fire retardant fabrics and commercial filters out particles of a thermosetting polymer it can be easily molded warm... Synthesized by evaporation of an aqueous solution containing equimolar quantities of melamine, formaldehyde, n-butanol polymer Unknown: INV. Carbon atoms and p-ˇ conjugation effects can be applied to both of them eu.