État physique : Solide: Densité : 1,07 g/ml à 20 °C: Prévention Réactivité . They may be what is called a copolymer, that is made up of two or more polymers, in order to increase the range of the plastic’s performance. It is mainly used in the production of industrial resins, e.g., for particle board and coatings.. Ventiler adéquatement sinon porter un appareil respiratoire approprié.Ne pas manger et ne pas boire pendant l'utilisation. They are generally produced by the condensation of phenol (or substituted phenol) with formaldehyde (or other aldehydes)(Hesse and Lang 2012, Kopf 2003). The UF resin adhesive is a cheap and colorless adhesive that is typically used in an interior application. Although resorcinol-formaldehyde and phenol-formaldehyde condensations share a common mechanism, the former would be faster if the QMA participates in condensations. 2005-08-08. The resin content in the product is 63-67%, depending on the density. Les propriétés sensibilisantes peuvent varier d'une résine à l'autre. Formaldehyde resin is a synthetic resin product made with formaldehyde as a base ingredient. See Phenol (solid). A wide variety of phenol formaldehyde resin price options are available to you, such as synthetic resin and plastics, synthetic rubbers, and synthetic fibers. Phenol-formaldehyde resins do not occur naturally in the environment, but are human-made. A wide variety of phenol formaldehyde price options are available to you, There are 575 suppliers who sells phenol formaldehyde price on Alibaba.com, mainly located in Asia. Information on Registered Substances comes from registration dossiers which have been assigned a registration number. For wood-based panels, very low formaldehyde emission, e.g. Formaldehyde is used extensively in the manufacturing of phenol formaldehyde resin, urea formaldehyde resins, and melamine formaldehyde resin. Phenol, water and an alkaline catalyst, limited to 05-2.2 moles of catalyst per 100 moles of phenol and preferably lithium carbonate, are mixed with formaldehyde at 1.9-5.0 formaldehyde to phenol ratios. The mechanisms for the base-catalyzed condensation reactions in phenol-formaldehyde resin synthesis were investigated by using the density functional theory method. An excess of phenol under acidic condition results in the formation of a PF resin called ‘novolac’ (Casiraghi et al. PF resin can offer better shear strength and wood failure percentage (WFP) after curing crosslinking with hot pressing temperatures of 130 °C to 150 °C. Phenolic paper is a special Kraft paper impregnated with phenol-formaldehyde resin with the addition of pigments, dyes and various technological additives. Hot-pressing times used were 6, 8, and 10 min. Avec l'acide performique à 90 %, une réaction violente peut survenir. To clarify the relationship between crosslinking density and physical properties of phenol–formaldehyde novolac cured epxy resin and factors governing their physical properties, we studied various properties of cured resins having different crosslinking densities. Formaldehyde, oligomeric reaction products with phenol EC Number: 500-005-2 EC Name: Formaldehyde, oligomeric reaction products with phenol CAS Number: 9003-35-4 Molecular formula: (C6H6O.CH2O)x IUPAC Name: Formaldehyde, oligomeric reaction products with phenol Phenol Formaldehyde Resin is specially formulated for ablative applications. The base material choice depends on the intended application of the finished product. The resins were prepared with various curing accelerators and raw epoxy resins having different molecular weights. Rincer abondamment les yeux avec de l'eau et consulter un médecin. Modifications réglementaires provinciales à la suite de la mise en œuvre du SIMDUT 2015, Information de base sur l’asthme professionnel, Grille d'incompatibilité et d'entreposage des principaux produits utilisés pour l'entretien des piscines, Correspondance entre désignations UN(TMD) et numéro CAS, Solvant Stoddard, spécifications et composants, Comparaison de l'évaluation d'agents sensibilisants, Poussières de bois pouvant causer une sensibilisation, Poussières de bois pouvant causer le cancer, Section identification pour RESINE PHENOLFORMALDEHYDE, Section hygiène et sécurité pour RESINE PHENOLFORMALDEHYDE, Section prévention pour RESINE PHENOLFORMALDEHYDE, Section propriétés toxicologiques pour RESINE PHENOLFORMALDEHYDE, Section premiers secours pour RESINE PHENOLFORMALDEHYDE, Section réglementation pour RESINE PHENOLFORMALDEHYDE, communiquer avec le Répertoire toxicologique. The dividing the weight of each specimen with its corresponding particleboard samples produced were allowed to cool at room calculated volume. phenol-formaldehyde. This study was conducted to investigate the effects of weight average molecular mass $$(\\bar M_W )$$ of phenol-formaldehyde (PF) adhesives on the performance of medium density fiberboard (MDF). According to information gathered by the Government, these substances are reported to be used in Canada in a variety of ways such as adhesives, sealants, corrosion inhibitors, fillers, bleaching agents, fixing agents, and abrasives. Phenols do not behave as organic alcohols, as one might guess from the presence of a hydroxyl (-OH) group in their structure. CopyCopied, Validated by Experts, Validated by Users, Non-Validated, Removed by Users, Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module. The density of Test item Formaldehyde, oligomeric reaction products with phenol (CAS No. Phenol-formaldehyde resoles and novalacs are cured at temperatures of from about 0° C. to about 150° C. and at pressures ranging from about atmospheric pressure to about 5 atmospheres to produce highly cross-linked resins when divinylbenzene is used as a cross-linking agent together with a minor amount of an acidic catalyst. Composite panels comprise of a high density structural phenolic foam core with steel facings both sides. Consulter un médecin. Phenol-formaldehyde resins are heat-resistant and waterproof, though somewhat brittle. Many people date the beginning of the modern plastics industry to 1907, when Leo Hendrik Baekeland, a Belgian-born American chemist, applied for a patent on a phenol-formaldehyde thermoset that eventually became known by the trademarked name Bakelite.Also known as phenolic resins, phenol-formaldehyde polymers were the first completely synthetic polymers to be … This product is used in a wide variety of settings and industries, and is one of the oldest synthetic resins around. 68130-83-6. Formaldehyde Solutions Hexion produces a range of aqueous formaldehyde solutions that range from 56% to 25% active formaldehyde and inhibited blends ranging from 25% methanol to 7%. Impacts du Système général harmonisé (SGH) sur le SIMDUT 1988, Guide technique d’interprétation de la législation fédérale, Modifications au Règlement sur les produits dangereux, La fiche de données de sécurité du fournisseur (FDS), La fiche de données de sécurité du lieu de travail (FDS), Guide d'utilisation d'une fiche de données de sécurité, La classification des substances et des mélanges. The noncovalently adsorbed phenol on the RGO surface can not only serve as an … Contents. The covalent crosslinking of these "clusters" produces gels which when processed under supercritical conditions, produce low density, organic aerogels (density ≦100 mg/cc; cell size ≦0.1 microns). Mise à jour : 1994-05-15. Appeler un médecin. 3 Chemical and Physical Properties Expand this section. Phenolic paper is produced with a density of 120-300 g/m2, according to the weight of the impregnated Kraft paper (40-100 g/m2). No predicted properties have been calculated for this compound. Medium Density Fibreboard (MDF) is an engineered wood-based sheet material made by bonding together wood fibres with a synthetic resin adhesive. Catalyst levels range from 0.5% to 3%. 1 Structures Expand this section. Phenol-formaldehyde definition is - a condensation product, resin, or plastic made from phenol itself or another phenol and formaldehyde. Search term: "phenol formaldehyde" Compare Products: Select up to 4 products. Sensibilisation: peau; exposition aux fumées: atteinte de la fonction pulmonaire. Paraformaldehyde, phenol polymer. Density carried out for 30, 35, 40, and 45ml of urea formaldehyde The density of each of the specimens was obtained by resin with the constant weight of the filler (sawdust). CopyCopied, SLGWESQGEUXWJQ-UHFFFAOYSA-N Paper phenolics are used in manufacturing electrical components s… 2005-08-09. 1,880 phenol formaldehyde resin price products are offered for sale by suppliers on Alibaba.com, of which polymer accounts for 5%, adhesives & sealants accounts for 3%. As the urea-formaldehyde resins are the most widely employed adhesives for wood products, improvement of their properties is still an important research topic. 2013-03-28 10:10:34 2013-03-28 10:10:34. Phenol formaldehyde (PF) resin, epoxy resin, and unsaturated polyester resin are considered to be the three main thermosetting resin adhesives. Formaldehyde, polymer with ethenylbenzene and phenol EC Number: 608-168-2 CAS Number: 28135-23-1 Molecular formula: Not a single isomer IUPAC Name: Formaldehyde, polymer with ethenylbenzene and phenol The mean density of the test item was determine to be 0.9171 g/cm³ at 20 °C and 971.3 hPa. Produits de décompositionInformation non disponible. These resins are highly utilized in the construction sector due to its properties such as high surface hardness, scratch resistance, low water absorption, high tensile strength, and low cost. In this study, OPT particleboard was made at 500, 600, and 700 kgm −3 density with 12% phenol formaldehyde resin content. En cas d'ingestion, faire vomir la personne si elle est consciente. Formaldehyde is an important precursor to many other materials and chemical compounds. 2020-12-19. Solide poudreux, ambre à odeur phénolique. These are synthetic polymers by the reaction of phenol or substituted phenol with formaldehyde. More... Molecular Weight: 124.14 g/mol. It has virtually no activity for ethanol oxidation, but exhibits high activity for oxidation of long-chain primary alcohols and for oxidation of S-hydroxymethyl-glutathione, a spontaneous adduct between formaldehyde and glutathione. Today's phenolic-based CFs are mostly prepared using phenol formaldehyde thermosetting resin, which is obtained by the reaction of phenol with formaldehyde in the presence of an acid catalyst (de Bruyn et al., 1997). The structures of the intermediates and transition states, as well as the potential energy barriers of the involved reactions, were obtained. Propriétés physiques . Formaldehyde 2. We report a facile in situ synthesis of reduced graphene oxide (RGO)–phenol formaldehyde (PF) composites with an interactive oxidation–reduction reaction. Their history goes back more than a century (Gardziella et al. 2 Names and Identifiers Expand this section. Contact Us. PFR; CAS# 9003-35-4, is prepared from a variable ratio of phenol vs. formaldehyde in the presence of an acidic or basic catalyst (see Figure 2-1)(Cragg 2012). Phenolic foam is used in process/petrochemical applications for the insulation of pipework, tanks, vessels etc. 2014). Melamine–phenol–formaldehyde resins, which in. Predicted - ACD/Labs; Predicted - ChemAxon; Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module. In this interactive chemical reaction, graphene oxide (GO) was reduced to RGO by phenol, and simultaneously phenol was oxidized to benzoquinone. This product is used in a wide variety of settings and industries, and is one of the oldest synthetic resins around. Create . Methanol 3. Phenolic resins are a group of the most versatile polymers yet invented. For preparation of conventional PF (CPF) resin, the calculated amounts of phenol, sodium hydroxide solution (50 wt.%), and water (to make up 45% solids) were charged into the reaction flask. Phenol-formaldehyde resins make excellent wood adhesives for plywood and particleboard because they form chemical bonds with the phenol-like lignin component of wood. To clarify the relationship between crosslinking density and physical properties of phenol–formaldehyde novolac cured epxy resin and factors governing their physical properties, we studied various properties of cured resins having different crosslinking densities. Executive summary: Ramasser les déchets et mettre dans un contenant hermétique. Phenol-formaldehyde (PF) resin is one of the most suitable resins for producing exterior-grade wood composites, especially as PF offers the characteristics of high fire resistance, high char yield, and solvent resistance. Phenol, polymer with formaldehyde. Phenolic resins are found in myriad industrial products. Wood Adhesives 2000. StabilitéCe produit est instable dans les conditions suivantes: Lorsqu'il est chauffé jusqu'à sa décomposition, il peut émettre des fumées toxiques: de monoxyde de carbone, de dioxyde de carbone, de phénols, de formaldéhyde. In 1996, the installed capacity for the production of formaldehyde was estimated at 8.7 million tons per year. Avec l'acrylonitrile la réaction dégage de la chaleur et peut s’emballer en présence d’acides forts (tel l'acide sulfurique) ou l'anhydride acétique. Chun Wei. The complexity of the subject is only hinted at here. Parent Compound: CID 996 (Phenol) Component Compounds: CID 712 (Formaldehyde) CID 996 (Phenol) Dates: Modify . The hypothesis of quinine methide (QM) formation was theoretically confirmed. Medium density fiberboard contains a higher resin-to-wood ratio than any other UF pressed wood product and is generally recognized as being the highest formaldehyde-emitting pressed wood product. Instead, they react as weak organic acids. Consumers most commonly encounter this substance in the context of a packaged product which includes it, such as MDF, a wood product commonly used in construction. Advanced Search | Structure Search. They are especially desirable for exterior plywood, owing to their good moisture resistance. The structures of the intermediates and transition states, as well as the potential energy barriers of the involved reactions, were obtained. Les agents résiduels pouvant causer la sensibilisation sont multiples (formaldéhyde, hydroxymethyl-2 phénol, hydroxyméthyl-4 phénol, trihydroxyméthyl-2,4,6 phénol, etc.). The resins were prepared with various curing accelerators and raw epoxy resins having different molecular weights. Mise à jour : 1986-03-14. Archived from the original on 10 August 2019. Avec le phénol, la réaction peut s'emballer lors de la formation d’une résine phénol-formaldéhyde. Encyclopædia Britannica, Inc. Read More on This Topic. From other reliable source it is concluded that density of chemical Formaldehyde, oligomeric reaction products with phenol is 1.10 g/cm3 & 1.18 g/cm3. COVID-19 : Politique transitoire visant la vente et l'importation de produits nettoyants en provenance des États-Unis. L'information relative à cette section n'est pas disponible actuellement. board, medium-density fiberboard, and laminated veneer lumber.1,2 Urea−formaldehyde (UF) adhesive, phenol−form-aldehyde (PF) adhesive, and melamine−formaldehyde (MF) adhesive are the commonly used conventional thermosetting wood adhesives. 9003-35-4 ) was determined following OECD guideline 109 and according to the method adapted from ASTM D 854-02. 2000, Pilato 2010). formaldehyde phenol. The properties of particleboard studied were modulus of rapture (MOR), modulus of elasticity (MOE), internal bonding (IB), water absorption (WA), and thickness swelling (TS). phenol formaldehyde. For evaluating PFT performance effects of percentage amount of substitution tannin content on the gel time, viscosity, pH, and density of adhesives were evaluated. Formaldehyde resin is a synthetic resin product made with formaldehyde as a base ingredient. Asked by Wiki User. CopyCopied, InChI=1S/C6H6O.CH2O/c7-6-4-2-1-3-5-6;1-2/h1-5,7H;1H2 An infrared spectrophotometric examination of the oxidative degradation of acid‐ and base‐catalyzed phenol‐formaldehyde polycondensates, novolaks and resoles, respectively, has been carried out in the temperature range form 100–200°C. Click to predict properties on the Chemicalize site, For medical information relating to Covid-19, please consult the, ACD/Labs Percepta Platform - PhysChem Module, Compounds with the same molecular formula, Search Google for structures with same skeleton. C=O.c1ccc(cc1)O Polymère, fabrication de colles ou d'adhésifs Hygiène et sécurité Apparence . The hypothesis of quinine methide (QM) formation was theoretically confirmed. Phenol-formaldehyde resin. Phenol-formaldehyde definition is - a condensation product, resin, or plastic made from phenol itself or another phenol and formaldehyde. As the urea-formaldehyde resins are the most widely employed adhesives for wood products, improvement of their properties is still an important research topic. Bakelite ® Phenolic Resoles Hexion manufactures both modified and unmodified phenolic resole resins with varying properties, to meet customers‘ processing and performance needs. The above is the search results for Chinese Phenol Formaldehyde Resin, click for more recommended manufacturers & suppliers listings such as phenolic resin, cas 9003-35-4, adhesive phenolic resin. Polymère, fabrication de colles ou d'adhésifs, Solide poudreux, ambre à odeur phénolique. Activez les scripts et rechargez la page. Consumers most commonly encounter this substance in the context of a packaged product which includes it, such as MDF, a wood product commonly used in construction. Retrieved 21 December 2019. 1982, Fink 2013). Resoles are cured in a single step by exposure to heat or acids, and develop the high degree of cross linkage responsible for their great stability. Pour de plus amples renseignements, veuillez communiquer avec le Répertoire toxicologique. No predicted properties have been … Mise à jour : 1986-03-14. Phenol/formaldehyde resins used to manufacture high-pressure laminates are typically produced by reacting phenol and formaldehyde by means of an alkaline catalyst such as sodium hydroxide [10]. RESINE PHENOL-FORMALDEHYDE; Utilisation et sources d'émission. The reaction between phenol and formaldehyde in alkaline solution leads to the introduction of a hydroxy-methyl group into the aromatic nucleus at positions ortho and para to the phenolic group. chemical compound: Alcohols and phenols . The dividing the weight of each specimen with its corresponding particleboard samples produced were allowed to cool at room calculated volume. To obtain different $$\\bar M_W $$ PF resins, a series of PF resoles were prepared by blending low $$\\bar M_W $$ (LMW) and high $$\\bar M_W $$ (HMW) resins in different proportions. Expired - Lifetime Application number US07/199,404 Inventor Richard W. Pekala Current Assignee (The listed assignees may be inaccurate. Consulter le bureau régional du ministère de l'environnement. 1 2 3. The potential energy barriers for formation of 2-QM, 4-QM, 6-QM, 2-QMA, and 4-QMA were calculated. Wiki User Answered . Mechanical properties of phenol/formaldehyde resin composites reinforced by cellulose microcrystal with different aspect ratio extracted from sisal fiber. Create . Molecular Formula C 7 H 8 O 2; Average mass 124.137 Da; Monoisotopic mass 124.052429 Da; ChemSpider ID 150578 IncompatibilitéCe produit est incompatible avec ces substances: Les agents oxydants forts, les acides minéraux concentrés, les bases fortes concentrées. 2020-12-05. Conserver dans un endroit bien ventilé, à l'écart de toute source de chaleur.Conserver à l'abri des matières oxydantes, des acides et des bases. *Please select more than one item to compare. Exposition aux fumées: irritation des yeux et des voies respiratoires, souffle court, respiration sifflante, serrement à la poitrine, difficultés respiratoires. For producing tannin phenol formaldehyde adhesive, 10 per cent, 20 per cent and 30 per cent (based on PF dry weight) of PF, substituted with natural extracted tannin. Water 50-00-0 67-56-1 7732-18-5 30 – 40 5 – 15 Balance Exposure limits: 0.3 ppm (0.37mg/m3) Exposure limits: 200 ppm (262mg/m3) N/A Section 3: Physical Data Physical state Clear, colourless liquid with strong formaldehyde odour. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Lignin-based phenol formaldehyde resin was synthesized using phenolated calcium lignosulfonate, and porous carbon with good wettability was prepared after carbonization and potassium hydroxide (KOH) activation. EPFA Unit 34 BASE Bordon Innovation Centre Broxhead House 60 Barbados Road Bordon GU35 0FX UK . Thble 2.-pK, values and dissociation constants of the phenolic compounds. Phenols and cresols are much weaker as acids than common carboxylic acids (phenol has pKa = 9.88). Based on emission test (JIS A 1460‐2001) formaldehyde … … The emission standards will be 0.05 ppm formaldehyde for hardwood plywood, 0.09 ppm formaldehyde for particleboard, 0.11 ppm formaldehyde for medium-density fiberboard, and 0.13 ppm formaldehyde for thin medium-density … Although they came into existence at the very start of the age of polymers, they continued to be developed into more and more applications. Formaldehyde, phenol polymer. Phenol, formaldehyde polymer. 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