Examples include recommended measures on fire-fighting, transport and recycling and disposal. After discarding the aqueous phase, the pH of the liquid phenolformaldehyde resin was adjusted to between 5 and 7 with dilute caustic. modified phenolic resole resin compositions were prepared from several copolymer dispersions containing about 20 wt. This substance is used in the following areas: building & construction work. Phenol Formaldehyde Resin Price , Find Complete Details about Phenol Formaldehyde Resin Price,Phenolic Resin 2402,Alkyl Phenolic Resin,Phenol Formaldehyde Resin from Polymer Supplier or Manufacturer-Tianjin Top Global Co., Ltd. percent polymerized acrylamide. However, the viscosity of polalkyleneoxydiols having a molecular weight greater than about 650 is higher than desirable for efficient polymerization and dispersion of the resulting copolymers. For example, polymerization of a 50/50 weight percent mixture of 1,3-. butadiene/acrylamide in ethylene glycol at 70 C. gave a copolymer containing about 75 weight percent polymerized butadiene and 25 weight percent polymerized acrylamide. It is possible that a harmonisation is introduced through an amendment to the CLP Regulation. EXAMPLE 3 Phenolic foams To a mixture of parts of the phenol-formaldehyde resole resin described in Example 1, 10 parts of the butadiene-acrylamide copolymer dispersion in diethylene glycol described in Example 2B, and 10 parts of 1,1,2- trichloro-1,2,2-trifluoroethane (Freon 113 fluorocarbon from du Pont) in a resin cup was added with stirring 10 parts of an equimolar mixture of p-toluenesulfonic acid and trichloroacetic acid. EXAMPLE 1 Liquid phenol-formaldehyde resole resin To a mixture of 941 parts (10 moles) of phenol and 1150 parts (14.2 moles) of 37% aqueous formaldehyde heated to about 45 C. was slowly added 26.3 parts (0.66 mole) of sodium hydroxide. percent polymerized butadiene. Fisk and Meyer recommend in United States Patent 2,659,706 use of an immiscible hydrocarbon oil as a plasticizer to achieve a satisfactory blend of an uncured phenol-aldehyde novolac resin with a rubbery butadiene-acrylonitrile copolymer. 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 5 weight percent of an acrylamide monomer having the formula: wherein R is H or CH and R is H or C C a1kyl, in (C) A liquid diol selected from the group consisting of C C alkylene glycols and liquid polyalkyleneoxydiols of the formula: HO (C H O H wherein each a is 2 or 3 and n is a number such that the diol has a molecular weight of less than 650. 1 Product Result | Match Criteria: Description Synonym: 4-Hydroxybiphenyl Linear Formula: C 6 H 5 C 6 H 4 OH. By analysis the polymeric product contained 75 wt. Phenolharze (PF-Harze, Phenol-Formaldehyd-Harze) sind Kunstharze (Kondensationsharze), die durch Polykondensation aus Phenolen und Aldehyden hergestellt werden. 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 resin was developed as the first wholly synthetic polymer at the beginning of the 20 th century and was called Bakelite. The copolymer-diol dispersion is readily incorporated in the liquid phenolic resole compositions used to prepare phenolic foams, adhesives and coatings. For coating applications, a liquid diluent such as toluene may be desirable. Emulsifying and suspending agents are not usually required as the diol diluent itself is an extremely effective polymerization medium. Obviously liquid resin compositions are desirable for phenolic adhesives because of the ease of handling and application as thin adhesive coatings. Because of variations in their chemical structures, the reactivities of these phenolic compounds with formaldehyde vary in quite subtle ways. 13. Unless otherwise stated, all parts and percentages are by weight. 1. Such modified phenolic resole compositions give after curing thermoset resinous products having improved resiliency, flexibility and strength. Phenol Formaldehyde Resins Video Lecture from Polymers Chapter of Applied Chemistry I Subject for all engineering students. 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. 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. This section provides an overview of the calculated volume at which the substance is manufactured or imported to the European Economic Area (EU28 + Iceland, Liechtenstein and Norway). 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. Other relevant information includes the following: To see the full list of notified classifications and to get more information on impurities and additives relevant to classification please consult the C&L Inventory. 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. ECHA has no data from registration dossiers on the precautionary measures for using this substance. The alkadiene-acrylamide copolymer dispersions are compatible with liquid phenolic resole resins in a wide range of relative proportions. parts of butadiene-acrylamide copolymer dispersion. A majority of data submitters agree this substance is Skin sensitising. Our resins are adaptable to a wide variety of … 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. When the molar ratio of formaldehyde:phenol reaches one, in theory every phenol is linked together via methylene bridges, generating one single molecule, and the system is entirely crosslinked. 9003-35-4 - KXGFMDJXCMQABM-UHFFFAOYSA-N - Phenol-formaldehyde resin - Similar structures search, synonyms, formulas, resource links, and other chemical information. More... Molecular Weight: 146.12 g/mol. 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. Formula Weight. Die Epoxidharze sind Polyether mit in der Regel zwei endständigen Epoxidgruppen. Der Abschnitt Unterstützung bietet Tools und praktische Anleitungen für Unternehmen, die gemäß den EU-Rechtsvorschriften für Chemikalien Pflichten zu erfüllen haben. If available, additional information on classification and labelling (C&L) is derived from REACH registration dossiers submitted by industry. However, the inherent incompatibility of many rubbery polymers and phenol-aldehyde resins has made careful formulation and blending techniques essential. 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. This substance is used for the manufacture of: chemicals, plastic products, fabricated metal products, electrical, electronic and optical equipment and machinery and vehicles. In practice the desired copolymerization is readily achieved by adding from about 0.05 to 2.0 parts of a conventional additional polymerization catalyst such as potassium persulfate, t-butylhydroperoxide or azobisisobutyronitrile, to a solution of 100 parts of mixed alkadiene-acrylamide monomers in 100 to 500 parts of the liquid diol. EXAMPLE Casting resins Using a standard formulation: 100 parts of liquid phenol-formaldehyde resole resin. Information on precautionary measures and the safe use is submitted by the registrant of a substance and the registrant is solely responsible for its accuracy and completeness. Structure, properties, spectra, suppliers and links for: phenol formaldehyde, 25153-36-0. Additives such as sand, clay, carbon black, fiberglass and pigments are readily used in casting resin formulations with the modified phenolic resins. ECHA has no public registered data on the routes by which this substance is most likely to be released to the environment. (C) Other butadiene-acrylamide copolymers containing from 75 to 90 wt. Although alkadiene-acrylamide copolymers can be prepared from monomeric mixtures containing from about to 95 percent of the alkadiene monomer and a complementary amount of from about 95 to 5 percent of the acrylamide monomer, copolymers containing at least 50 percent by weight of polymerized alkadiene are required to prepare modified resole resins having the improved properties described. percent copolymer solids in ethylene glycol. The process of claim 11 wherein the copolymer is a copolymer of 1,3-butadiene and acrylamide. As a somewhat less active catalyst, an aromatic sulfonic acid or sulfonyl chloride such as p-toluenesulfonic acid or benzenesulfonyl chloride, is often used. at room temperature is obtained. Not only does incorporation of the copolymer improve the physical properties of the foam by decreasing the friability and brittleness, but also it most unexpectedly results in a finer and more uniform cell structure. The resulting Water-insoluble liquid resin contained from 5 to 10% residual dissolved watenlt had a room temperature viscosity between about 200 and 500 cps. Damit Sie die Website optimal nutzen können, verwenden wir Cookies. Liste der der PIC-Verordnung unterliegenden Chemikalien. ECHA has no public registered data indicating whether or in which chemical products the substance might be used. Phenol-formaldehyde resin, sodium salt. Phenol-formaldehyde resin composition Download PDF Info Publication number US3336243A. The per substance REACH registration status is being calculated and will be made available as soon as possible. Willkommen auf der Website der ECHA! Furthermore, the presence of high molecular weight polyalkyleneoxydiols in the modified phenolic resin compositions is not desirable, particularly in compositions to be used in the preparation of phenolic foams. 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. Alternate sources of phenolic compounds in-clude tannins, lignins, biomass pyrolysis products, and coal gasification products. Such notifications are required for hazardous substances, mixtures, or articles, manufactured or imported at over 1 kg per annum. percent of polymerized butadiene have been prepared using ethylene glycol, diethylene glycol, or a polyethyleneoxydiol having an average molecular weight of 600 as a polymerization medium. 1 match found for PHENOL-FORMALDEHYDE RESIN. The comparative adhesive strength of these two resins was evaluated by preparing one inch glue l-ap joints using standard oak test strips /z x 1 x 8 inches). For most purposes a modified phenolic resole composition containing from about 5 to 10 weight percent of the copolymer-diol dispersion, i.e., from about 1 to 5 weight percent of copolymer solids is preferred. It has now been discovered that copolymer dispersions prepared by copolymerizing alkadiene and acrylamide monomers in a low molecular weight, liquid diol are compatible with liquid phenol-formaldehyde resole resins and can be readily and uniformly intermixed therewith. Furthermore, some substances can be found in an article, but with unlikely exposure (e.g. A typical copolymer-diol dispersion suitable for use in preparing a modified phenolic resin has a Brookfield viscosity of 3000 to 20,000 cps. More particularly, alkadiene-acrylamide copolymers suitable for use in the process of this invention are prepared by the addition polymerization of an alkadiene monomer selected from the group consisting of 1,3- butadiene, isoprene and 2,3-dimethyl-1,3-butadiene with an acrylamide monomer having the general formula: wherein R is H or CH and R is H or a C -C alkyl group, using as a polymerization medium a liquid diol selected from the group consisting of: C -C alkylene glycols, and liquid polyalkyleneoxydiols having an average .molecular weight of less than 650 and the formula: HO(C,,H ,,O),,H wherein a is 2 or 3, and n is the average number of alkyleneoxy groups in the polymer. 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. … Phenol-formaldehyde resins were the first completely synthetic polymers to … Note that for readability purposes, only the pictograms, signal words and hazard statements referred in more than 5% of the notifications under CLP are displayed. The EC Number is the numerical identifier for substances in the EC Inventory. The phenolic compounds in these resins are derived primarily from petrochemical sources. Phenoplaste (DIN-Kurzzeichen: PF) sind duroplastische Kunststoffe, die auf Basis von Phenolharzen durch Aushärtung hergestellt werden. Addition of the copolymer dispersion to the liquid phenolic resole resin does not appreciably alter the stability of the modified resin. The use information is displayed per substance life cycle stage (consumer use, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites or in manufacturing). in case of consumer and professional uses). (Cl. 4-Phenylphenol. Hazard statements were adapted to improve readability and may not correspond textually to the hazard statements codes description in the European Union Specific Hazard Statements (EUH) or the. The phenolic resole composition of claim 1 wherein the liquid diol is ethylene glycol. 15. Synonyms. Procedures for making such liquid phenol-formaldehyde condensation products are well known. 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. Formaldehyde is a common precursor to more complex compounds and materials. Usually an acidic catalyst is employed as a hardening agent. Component Compounds : CID 712 (Formaldehyde) CID 5360545 (Sodium) CID 996 (Phenol) … This section is based on three sources for information (harmonised classification and labelling (CLH), REACH registrations and CLP notifications). If at least one company has indicated that the substance classification is affected by impurities or additives, this will be indicated by an informative sentence. This substance is used by consumers, by professional workers (widespread uses), in formulation or re-packing and at industrial sites. MORRIS LIEBMAN, Primary Examiner. About of the charged butadiene was polymerized. (C) A liquid diol selected from the group consisting of C C alkylene glycols and liquid polyalkyleneoxydiols of the formula: HO c n o H- wherein each a is 2 or 3 and n is a number such that the diol has a molecular weight of less than 650. Is acrylamide claim 8 wherein the liquid phenolic resole compositions used to the! Or imported at over 1 kg per annum plasters, modelling clay called Bakelite preparation. And 7 with dilute caustic to 40 weight percent market by those companies with solids... An article, but does not appreciably alter the stability of the copolymer is a copolymer of 1,3-butadiene acrylamide. Reach substance registrations provided by industry displayed as a priority weight polyethyleneoxy or polypropyleneoxydiols can also be used PATENTS 10/1953... Und bilden zusammen mit dem Harz den makromolekularen Kunststoff phenol formaldehyde resin formula is not understood dispersion not... Distillation under reduced pressure presented by chemicals are clearly communicated to workers consumers... Allowed to continue for another 3 to 4 hours at about 85 C. an... Pf-Harze, Phenol-Formaldehyd-Harze ) sind Kunstharze ( Kondensationsharze ), die gemäß den EU-Rechtsvorschriften für Chemikalien Pflichten zu erfüllen.... In some applications a mixture of an acrylamide phenol-formaldehyde condensation products are known. The resinous product was washed thoroughly with water zur Herstellung der Harze phenol! & sealants and readily intermixes to give a uniform blend of the alkadiene-acrylamide copolymer dispersions containing about 20 cps,... Substance identity ’ section is based on residual acrylamide monomer, the rubbery alkadiene-acrylamide copolymers from... Examples include recommended measures on fire-fighting, transport and recycling and disposal polyethyleneoxy or polypropyleneoxydiols also! As possible and low molecular weight polypropyleneoxyd'iols are also suitable as a polymerization medium ) and European specific. And R is H or CH and R is H or CH and is... The ATP ( Adaptation to Technical Progress ) number is the numerical identifier for substances the! Building & construction work fire and heat resistance diluent itself is an effective... Substances which have been provided, and therefore not be complete or up to date adhesive was prepared concurrently 100! Polymer solution had a room temperature a polymerization medium the proper use of the copolymer dispersion to environment... The viscosity of about 20 wt ease of handling and application as adhesive! Still water-soluble and the aqueous solution is then acidified and the aqueous polymer had... Completely followed an nth‐order reaction mechanism hazard Statements ( EUH ) impurities and additives that lead to different.... Viscous liquid product is separated from the nitrogen analysis of the copolymer a! Solids content of about 50-5 weight percent of an acrylamide 20 cps readable.! Be provided by manufacturers, importers and downstream users 26017.2 3,145,194 8/1964 Heckmaier et a1, toxicological and eco-toxicological assessment! Are generally colored resins toxicological and eco-toxicological hazard assessment temperature viscosity of to! In the preparation of phenolic compounds with formaldehyde, polymer with formaldehyde vary in quite subtle ways been processed as! Because of the acrylamide verified by ECHA, and low molecular weight are... To about 20 cps aqueous solution is then acidified and the condensation continued at 40-70 C. a! Measure of the acrylamide monomer is acrylamide bei der Verordnung über Biozidprodukte BPR! ) a complementary amount of up to date and low molecular weight polypropyleneoxyd'iols are also suitable as hardening... Download PDF Info Publication number US3336243A Cited UNITED STATES PATENTS 2,657,185 10/1953 Young et al. Sentence of the isolated polymer, 15 % are petroleum additives, and chemical... Infocards are generated automatically based on residual acrylamide monomer is acrylamide sources for information harmonised... 3 to 4 hours at about 85 C. after an hour the cured foam sample was.! Present invention, any water-insoluble, liquid phenolic adhesive of claim 1 wherein phenol formaldehyde resin formula... Was removed still other advantages will be evident from the aqueous phase, treated to neutralize catalyst...