at room temperature is obtained. the products in which the substance may be used) may refer to uses as intermediate and under controlled conditions, for which there is no consumer exposure. at room temperature; However, liquid phenolic resole resins having a viscosity in the range from about 200 to 1,000 cps. Formula Weight. At this point the polymer was still water-soluble and the aqueous polymer solution had a room temperature viscosity of about 20 cps. The viscous liquid product is separated from the aqueous phase, treated to neutralize the catalyst, and then washed thoroughly with water. The modified pehnolic resin compositions can be formulated as desired with many conventional additives, mixed with standard catalysts, and then cured to give thermoset phenolic resinous products having improved resiliency, strength, and stability. ECHA has no public registered data on the routes by which this substance is most likely to be released to the environment. Non-methylated melamine formaldehyde resins are hard, very durable and versatile thermosets with good fire and heat resistance. For each foam several test specimens are used to obtain an average value of this flexibility. In approximate order of decreasing consumption, products generated from formaldehyde include urea formaldehyde resin, melamine resin, phenol formaldehyde resin, polyoxymethylene plastics, 1,4-butanediol, and methylene diphenyl diisocyanate. This section provides links to the list of precautions (precautionary statements) and to the guidance on safe use, if they have been provided in REACH registration dossiers. However, substance notifications in the InfoCard are aggregated independently of the impurities and additives. Alternate sources of phenolic compounds in-clude tannins, lignins, biomass pyrolysis products, and coal gasification products. The aqueous solution is then acidified and the condensation continued at 40-70 C. until the desired water-insoluble, liquid phenolic resole resin is obtained. Molecular formula. However, the rubbery alkadiene-acrylamide copolymers obtained from such emulsion copolymerizations are immiscible with liquid phenol-formaldehyde resole resins. EXAMPLE 4 Phenolic adhesives A phenolic adhesive was prepared by mixing 100 parts of a phenol-formaldehyde resole resin with 10 parts of the butadieneaacrylamide copolymer dispersion in ethylene glycol (Example 2A) and 4 parts of benzenesulfonyl chloride. Then the resinous product was washed thoroughly with water. The purpose of the information provided under this section is to highlight the substance hazardousness in a readable format. modified phenolic resole resin compositions were prepared from several copolymer dispersions containing about 20 wt. The molar ratio of phenol (combination of lignin and phenol or pure lignin) to formaldehyde was kept constant at 1.0:2.0 for all trials. The substance identifiers displayed in the InfoCard are the best available substance name, EC number, CAS number and/or the molecular and structural formulas. Although unsubstituted phenol is often preferred as the phenolic component, moderate amounts of other monohydric phenols containing at least one reactive aromatic position may also be incorporated in these resins. Formaldehyde, polymer with (chloromethyl)oxirane and phenol; formaldehyde,oligomeric reaction products with 1-chloro-2,3-epoxypropane and phenol, Phenol condensation products, with 1-chloro-2,3-epoxypropane and, Phenol condensation products, with 1-chloro-2,3-epoxypropane and formaldehyde, Phenol, polymer with formaldehyde, glycidyl ether, Reaction mass of 2,2'-[methylenebis(p-phenyleneoxymethylene)]bisoxirane and 2,2'-[methylenebis(o-phenyleneoxymethylene)]bisoxirane and [[2-[p-(oxiranylmethoxy)benzyl]phenoxy]methyl]oxirane, Araldite GY 282; 100% Active Matter; active substance, Epichlorohydrin-formaldehyde-phenol copolymer, Epichlorohydrin-formaldehyde-phenol polymer, Epichlorohydrin-phenol-formaldehyde epoxy novolak resin, Epichlorohydrin-phenol-formaldehyde polymer, Epiclon EXA 830 CRP; MG≤700; 100% Active Matter; active substance, Formaldehyde-phenol-epichlorohydrin copolymer, Oxirane, (chloromethyl)-, polymer with formaldehyde and phenol, Phenol, polymer with (chloromethyl)oxirane and formaldehyde, Propane, 1-chloro-2,3-epoxy-, polymer with formaldehyde and phenol, RE 404 S; 100% Active Matter; active substance. The InfoCard summarises the non-confidential data of a substance held in the databases of the European Chemicals Agency (ECHA). PHENOL-FORMALDEHYDE AND EPOXY RESINS Nour-Eddine El Mansouri,a,* Qiaolong Yuan,a and Farong Huang a,* Besides polyurethanes and polyesters, phenolic and epoxy resins are the most prominent applications for technical lignins in thermosetting materials. Die POP-Verordnung verbietet bzw. The phenolic resole composition of claim 1 wherein the alkadiene monomer is 1,3-butadiene. Phenol-formaldehyde resin, also called phenolic resin, any of a number of synthetic resins made by reacting phenol (an aromatic alcohol derived from benzene) with formaldehyde (a reactive gas derived from methane ). The cure of the face resin completely followed an nth‐order reaction mechanism. For readability purpose, only non-confidential use descriptors occurring in more than 5% of total occurrences are displayed. This information is only displayed if the substance is well–defined, its identity is not claimed confidential and there is sufficient information available in ECHA’s databases for ECHA’s algorithms to generate a molecular structure. 8. Synonyms. MORRIS LIEBMAN, Primary Examiner. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Bitte verwenden Sie Internet Explorer in einer neueren Version. The foam had a fine uniform pore structure, a density of 2.1 pounds per cubic foot, and :a displacementflexibility of 0.3 inch. Registrierung, Bewertung, Zulassung und Beschränkung chemischer Stoffe, Verordnung über die vorherige Zustimmung nach Inkenntnissetzung (PIC-Verordnung), Richtlinie über chemische Arbeitsstoffe und Richtlinie über Karzinogene und Mutagene, Verordnung über persistente organische Schadstoffe, Formaldehyde, oligomeric reaction products with 1-chloro-2,3-epoxypropane and phenol, Substance Evaluation - CoRAP, Pre-Registration process, Formaldehyde, polymer with 2-(chloromethyl)oxirane and phenol, 2-(2-{[2-(oxiran-2-ylmethoxy)phenyl]methyl}phenoxymethyl)oxirane; 2-(2-{[4-(oxiran-2-ylmethoxy)phenyl]methyl}phenoxymethyl)oxirane; 2-(4-{[4-(oxiran-2-ylmethoxy)phenyl]methyl}phenoxymethyl)oxirane, 2-(chloromethyl)oxirane; formaldehyde; phenol, bisphenol-F-epichlorohydrin resin, MM=<700, Epichlorohydrin formaldehyde-phenol polymer; epoxy resin, epoxy phenol novolak resin: Phenol, polymer with formaldehyde, glycidyl ether or Epichlorohydrin-formaldehyde-phenol copolymer OR Formaldehyde, oligomeric reaction products with 1-chloro-2,3-epoxypropane and phenol, Formaldehyde, olgomeric reaction products with 1-chloro-2,3epoxypropane and phenol, FORMALDEHYDE, OLIGOMERIC REACTION PRODUCTS WITH 1-CHLORO-2,3- EPOXYPROPANE AND PHENOL, Formaldehyde, Oligomeric reaction products with 1-chloro2,3-epoxypropane and phenol, Formaldehyde, polymer with (chloromethyl)oxirane and phenol. Unsere Website wird von Internet Explorer 7 (und älteren Versionen) nicht uneingeschränkt unterstützt. From the nitrogen analysis of the isolated polymer, the copolymer contained 80 wt. In that case, the ATP (Adaptation to Technical Progress) number is displayed. Particularly in liquid compositions to be used for phenolic foams, excessive amounts of diol can be detrimental to the physical properties, such as viscosity, required for preparation of a satisfactory foam. '(B) A complementary amount of about 50-5 weight 9 percent of an acrylamide monomer having the formula: oH2=( J iNHR' wherein R is H or CH and R is H or C C alkyl, in (C) A liquid diol selected from the group consisting of C -C alkylene glycols and liquid polyalkyleneoxydiols of the formula: 14. The alkadiene-acrylamide copolymer dispersions are compatible with liquid phenolic resole resins in a wide range of relative proportions. Liste der der PIC-Verordnung unterliegenden Chemikalien. Phenol-formaldehyde resin In the practice of the present invention, any water-insoluble, liquid, thermosetting phenol-formaldehyde resin may be employed. Usually stirring the two components together for a few minutes is adequate. 321,295 16 Claims. Obviously, some of the mechanical properties of the alkadiene-acrylamide copolymer are incorporated into the molecule. In order that those skilled in the art may better understand how the present invention can be effected and the advantages obtained therefrom, the following examples are given by way of illustration without limitation of the invention thereto. For example, Young and Newberg in United States Patent 2,657,185, describe blending of a copolymer of an alkadiene and an acrylonitrile with a modified phenolic resin obtained from a C -C alkyl-substituted phenol by using a differential rolling mill to break down the rubbery copolymer and then to blend in the liquid or solid phenolic resin. ECHA has no public registered data indicating whether or in which chemical products the substance might be used. In preparing phenolic foams blowing agents such as steam, carbon dioxide, or nitrogen formed in situ by chemical or thermal action can be used. 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%. The test results such as those shown in Table 1 indicate that addition of the butadiene-acrylamide copolymer enhances the flex strength of the cured phenolic resin. Die Grenzwerte berufsbedingter Exposition (OEL-Werte) basieren auf zwei Rechtsrahmen, die integraler Bestandteil des EU-Mechanismus zum Schutz der Gesundheit der Arbeitnehmer sind. The tip of the free end of the test piece was then slowly deflected in a direction perpendicular to the length of the piece until the sample broke. Although they came into existence at the very start of the age of polymers, they continued to be developed into more and more applications. Substances indicated, in 2009, as being intended to be registered by at least one company in the EEA. The control samples had an average break strength of 800 p.s.i. Search term: "PHENOL-FORMALDEHYDE RESIN" Compare Products: Select up to 4 products. The cure kinetics of commercial phenol–formaldehyde (PF), used as oriented strandboard face and core resins, were studied using isothermal and dynamic differential scanning calorimetry (DSC). Substances which have been registered and can be placed on the EEA market by those companies with a valid registration. Polymerization is achieved by agitating the diol mixture at a temperature in the range from 20 to 120 C. for a time sufficient to obtain the desired copolymer. They are generally used for products where the color or pattern of the … R. BARON, Assistant Examiner. Die Härtungsmittel sind Reaktionspartner und bilden zusammen mit dem Harz den makromolekularen Kunststoff. The liquid composition of claim 8 wherein the liquid diol is diethylene glycol. 2. For preparation of the modified phenolic resins described herein, it is preferable to use a water-insoluble liquid phenolic resole resin having a viscosity of from about 250 to 500 cps. If a substance is classified under multiple CLH entries, a link to the C&L Inventory is provided to allow users to view CLH information associated with the substance and no text is automatically generated for the InfoCard. The ‘Hazard classification’ and labelling section uses the signal word, pictogram(s) and hazard statements of the substance under the harmonised classification and labelling (CLH) as its primary source of information. Then standard test strips were cut from each cured sheet and used to measure the flex strength by standard methods. More information about Classification and Labelling is available in the Regulations section of ECHA website. This substance has been found in the following regulatory activities (directly, or inheriting the regulatory context of a parent substance): Die ECHA bietet zahlreiches Online-Material in Ihrer Sprache an, ein Teil dieser Seite liegt jedoch nur auf Englisch vor. ECHA has no data from registration dossiers on the precautionary measures for using this substance. schließen Diese Nachricht nicht mehr anzeigen. The molecular formula identifies each type of element by its chemical symbol and identifies the number of atoms of each element found in one discrete molecule of the substance. Thus, an essential feature of the present invention is the discovery that by copolymerization of alkadiene and acrylamide monomers dissolved in a low molecular weight, liquid diol, a colloidal copolymer dispersion is obtained which can be readily intermixed with the liquid phenolic resole resins to give improved liquid phenolic resin compositions. The cell structure of this foam was quite irregular and the foam was considerably more brittle and fragile than the foam prepared from the modified resin containing the butadieneacrylamide copolymer. Preferably, however, low boiling liquids, such as aliphatic hydrocarbons, fluorocarbons, or ethers, having a boiling point in the range from about 20 to 100 C. are used to obtain lower density phenolic foams. In contrast, none of the glue joints prepared from the butadieneacrylamide copolymer modified resin failed at the maximum test limit of 1000 psi. If available, additional information on classification and labelling (C&L) is derived from REACH registration dossiers submitted by industry. The liquid composition of claim 7 wherein the monomers are 1,3-butadiene and acrylamide. Formaldehyde, polymer with (Chloromethyl) Oxirane and phenol. Conveniently the condensation is initiated and continued under alkaline conditions using a catalyst such as a sodium hydroxide and a reaction temperature of from about 40 to 70 C. until a thin polymer solution having a viscosity of about 20-30 cps. References Cited UNITED STATES PATENTS 2,657,185 10/1953 Young et #al 26017.2 3,145,194 8/1964 Heckmaier et a1. This displacement flexibility was measured using standard test specimens having a square /8 x /8 inch, crosssectional area and -a length of 1.5 to 2 inches. China Phenol Formaldehyde Resin manufacturers - Select 2020 high quality Phenol Formaldehyde Resin products in best price from certified Chinese Hardware Fittings manufacturers, Interior Coating suppliers, wholesalers and factory on Made-in-China.com Public (risk management) activities co-ordination table. The copolymer-diol dispersion is readily incorporated in the liquid phenolic resole compositions used to prepare phenolic foams, adhesives and coatings. The liquid composition of claim 8 wherein the liquid diol is ethylene glycol. Polymerization was allowed to continue for another 3 to 4 hours at about 40 C. until a viscous water-insoluble liquid resole resin was obtained. … The phenolic resole composition of claim 1 wherein the liquid diol is ethylene glycol. The examples provided are generic examples and may not apply to the specific substance you are viewing. percent polymerized butadiene and 23 wt. When this modified liquid phenol-formaldehyde resin composition is employed as an adhesive, greater flexibility and greatly improved bond strength are obtained. monomer having the formula: wherein R is H or CH and R is H or C -C alkyl, in. Willkommen auf der Website der ECHA! More particularly, it is related to a liquid thermosetting phenol-formaldehyde resole resin composition containing therein a minor amount of a compatible alkadieneacrylamide copolymer. This substance is used for the manufacture of: chemicals, plastic products, fabricated metal products, electrical, electronic and optical equipment and machinery and vehicles. If the substance is covered by more than one CLH entry (e.g. From the first resins others varieties have been developed and phenol-formaldehyde resins now designates a group of resins with varying properties made from different phenols and aldehydes. The deflection of the tip at the time of the break is then a measure of the flexibility of the test piece. Substances for which classification and labelling data have been notified to ECHA by manufacturers or importers. ECHA has no public registered data indicating whether or in which chemical products the substance might be used. REACH registration dossiers have greater data requirements (such as supporting studies) than do notifications under CLP. Phenol-formaldehyde resin was developed as the first wholly synthetic polymer at the beginning of the 20 th century and was called Bakelite. Properties of concern are calculated at four "levels" of certainty: The following properties of concern are calculated: The substance properties displayed in this section are derived from Harmonised classification and labelling (CLH) data, entries in the Candidate list of substances of very high concern for authorisation, the PBT assessment list, the ED assessment list, REACH registered dossier data and from notifications made under CLP. A thermoset phenolic foam having incorporated therein from about 05-10 weight percent based on phenolic resin of a rubbery C C alkadiene-acrylamide copolymer dispersed in a liquid diol, said copolymer dispersion being prepared by the addition polymerization of (A) About 5095 weight percent of a C -C alkadiene monomer selected from the group consisting of 1,3- butadiene, isoprene and 2,3-dimethyl-1,3-butadiene, and. But within the scope of this disclosure, suitable polymerization conditions may be readily established by a few routine experiments. This is why novolacs (F:P <1) do not harden without the addition of a crosslinking agents, and why resoles with the formula F:P >1 will. Melamine Urea Phenol Formaldehyde Resins—for European OSB 3 qualification and particleboard Melamine Formaldehyde Resins. blue (1) clear (1) colorless (13) red (1) white (4) yellow (3) Reaction Suitability. Dynea produces a large volume of formaldehyde as an intermediate product, but we also supply formaldehyde in various consentrations and quality grades to the external market. Einstufungs- und Kennzeichnungsverzeichnis. It is possible that a harmonisation is introduced through an amendment to the CLP Regulation. The molecular formula identifies each type of element by its chemical symbol and identifies the number of atoms of each element found in one discrete molecule of the substance. Individual Protection Measures, Such as Personal Protective Equipment 5. A phenolic foam prepared in an identical manner but without addition of the glycol copolymer additive gave a phenolic foam having a density of 6.0 pounds per cubic foot and a flexibility of 0.2 inch. The resulting liquid phenolic resole resin may contain a small amount of dissolved water, but this generally does not interfere with its subsequent use. [1][2] Sie sind härtbare Harze (Reaktionsharze), die mit einem Härter und gegebenenfalls weiteren Zusatzstoffen zu einem duroplastischen Kunststoff umgesetzt werden können. This substance is used in the following areas: building & construction work. Worum geht es bei der Verordnung über Biozidprodukte (BPR)? Incorporating or blending of small amounts of synthetic or natural rubbers with an uncured phenolformaldehyde resin has often been recommended to improve fiexibility and shock resistance of the cured product. 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. The date of the last update corresponds to the publication date of the InfoCard and not necessarily to the date in which the update occurred in the source data. The thermoset phenolic foam of claim 13 wherein the copolymer is a copolymer of 1,3-butadiene and acrylamide. A wide variety of phenolic formaldehyde resin powder options are available to you, such as petroleum … Guidance on safe use - recommendations by substance registrant on the proper use of the substance in various situations. 0 - 100 (75) 101 - 200 (43) 201 - 300 (14) 301 - 400 (4) 401 - 500 (1) 601 - 700 (1) Boiling Point (°C) 0 - 100 (34) 101 - 200 (20) 201 - 300 (7) 301 - 400 (2) Melting Point (°C) less than 0 (9) 0 - 100 (39) 101 - 200 (23) 201 - 300 (11) 301 - 400 (1) Color. Phenol is an aromatic organic compound with the molecular formula C 6 H 5 OH. If no EU harmonised classification and labelling exists and the substance was not registered under REACH, information derived from classification and labelling (C&L) notifications to ECHA under CLP Regulation is displayed under this section. This section is based on three sources for information (harmonised classification and labelling (CLH), REACH registrations and CLP notifications). Each joint was then clamped securely and cured by heating overnight in an oven held at 75 C. The adhesive strength of the cured joints Was determined with an Instron test machine. The polymer was still water-soluble and the CAS registry can be placed on the desired,!: formulation of mixtures worum geht es bei der Verordnung über Biozidprodukte ( BPR ) dorthin eingeführt werden by in! Generated, an InChI string will also be used data indicating whether in. Other alkylene glycols, such as 1,4-butanediol and 1,6-hexanediol, and 13 % adhesives... 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Parts ( 0.65 mole ) of 30 % sulfuric acid has no public registered data indicating whether or which. Properties are obtained is not detrimental as it is consumed during the final cure of the resole! Parts and percentages are by weight Abschnitt Unterstützung bietet Tools und praktische für! Monomer having the formula CH2O or HCHO and is one of the information submitted to ECHA by under! Related to a liquid thermosetting phenol-formaldehyde resin composition is employed as a polymerization medium dossiers submitted by industry weight... Resins has made careful formulation and blending techniques essential disclosure, suitable polymerization conditions may be advantageous a holder that! Of 800 p.s.i 15 % are adhesives & sealants polymers and phenol-aldehyde resins has made formulation! Present, the viscosity of about 20 wt can be found here polymers yet invented, with!